Title: Cheap Flights from Southern Illinois - Expedia.ca ![](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Southern Illinois - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only [Southern Illinois Travel Guide](https://expedia.ca/Southern-Illinois.dx6233859)[Hotels in Southern Illinois](https://expedia.ca/Southern-Illinois-Hotels.d6233859.Travel-Guide-Hotels)[Southern Illinois Car Rentals](https://expedia.ca/Car-Rentals-In-Southern-Illinois.d6233859.Car-Rental-Guide)[Southern Illinois Vacation Packages](https://expedia.ca/Southern-Illinois.d6233859.Destination-Travel-Guides) ## Popular airlines - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheapest flights from Southern Illinois These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Oct 28 - Fri, Oct 31 STL St. Louis MIA Miami CA $220 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:MIA,departure:28/10/2025TANYT&leg2=from:MIA,to:STL,departure:31/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:219.80&airProductToken=AQozCjEIwYIBEgQxNzE2GPJcIIwCKK_G-wIw1sf7AjhCQABYAWoFQkFTSUNyCE9XQUxVTkJYCjMKMQjBggESBDE1OTQYjAIg8lwoue_7AjDo8PsCOEJAAFgBagVCQVNJQ3IITzdBV1pTQloSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Oct 28 - Fri, Oct 31 STL St. Louis MIA Miami CA $248 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:MIA,departure:28/10/2025TANYT&leg2=from:MIA,to:STL,departure:31/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:247.87&airProductToken=AQpuCjUIxJgBEgQxNzAzGPJcIOBcKJXJ-wIw9Mn7AjhFQABYAWoJTUFJTkJBU0lDcghWQVdOSDNCRwo1CMSYARIEMTMyMxjgXCCMAiiby_sCMIrM-wI4RUABWAFqCU1BSU5CQVNJQ3IIVkFXTkgzQkcSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Wed, Oct 29 - Sat, Nov 1 STL St. Louis DEN Denver CA $251 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:29/10/2025TANYT&leg2=from:DEN,to:STL,departure:01/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:250.70&airProductToken=AQpmCjEIwYIBEgQxOTk3GPJcIK4cKMDS-wIwl9P7AjhCQABYAWoFQkFTSUNyCE9WQUlWU0JWCjEIwYIBEgQyMzYzGK4cIINpKNDU-wIw69X7AjhCQAFYAWoFQkFTSUNyCE9WQUlWU0JWCmYKMQjBggESAzU3MxiDaSDimgEo1PT7AjCa9vsCOEJAAFgBagVCQVNJQ3IIT1dBVVVOQlYKMQjBggESAzgzMRjimgEg8lwopff7AjCd-PsCOEJAAVgBagVCQVNJQ3IIT1dBVVVOQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Oct 28 - Tue, Nov 4 STL St. Louis DEN Denver CA $259 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:28/10/2025TANYT&leg2=from:DEN,to:STL,departure:04/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:258.40&airProductToken=AQpmCjEIwYIBEgQxOTk3GPJcIK4cKKDH-wIw98f7AjhCQABYAWoFQkFTSUNyCE9XQVVVTkJWCjEIwYIBEgQxMTYwGK4cIINpKOXI-wIwh8r7AjhCQAFYAWoFQkFTSUNyCE9XQVVVTkJWCmgKMgjBggESBDMyOTkYg2kg4poBKOOe_AIwmaD8AjhCQABYAWoFQkFTSUNyCE9XQVVVTkJWCjIIwYIBEgQyNDc1GOKaASDyXCjqofwCMOei_AI4QkABWAFqBUJBU0lDcghPV0FVVU5CVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Oct 28 - Tue, Oct 28 STL St. Louis MIA Miami CA $265 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:MIA,departure:28/10/2025TANYT&leg2=from:MIA,to:STL,departure:28/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:264.60&airProductToken=AQpECiAIxJgBEgQxNTI0GPJcIOBcKNTG-wIwtcf7AjhFQABYAQogCMSYARIEMTUxMBjgXCCMAijex_sCMMzI-wI4RUABWAEKRAogCMSYARIEMTMzMhiMAiDgXCiTyvsCMIrL-wI4RUAAWAEKIAjEmAESBDEzOTMY4Fwg8lwoxMv7AjCmzPsCOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Oct 29 - Sat, Nov 1 STL St. Louis DEN Denver CA $272 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:29/10/2025TANYT&leg2=from:DEN,to:STL,departure:01/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:271.10&airProductToken=AQptCjUIxJgBEgQxNTI0GPJcIOBcKPTR-wIw1dL7AjhFQABYAWoJTUFJTkJBU0lDcghWQVZTQjRCQwo0CMSYARIDOTk1GOBcIINpKMbT-wIwidX7AjhFQAFYAWoJTUFJTkJBU0lDcghWQVZTQjRCQwpwCjYIxJgBEgQyNzg3GINpIOO0ASiY9vsCMML3-wI4RUAAWAFqCU1BSU5CQVNJQ3IIVkFXTkgzQkcKNgjEmAESBDI4MjIY47QBIPJcKOv3-wIwzPj7AjhFQAFYAWoJTUFJTkJBU0lDcghWQVdOSDNCRxIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Oct 28 - Tue, Nov 4 STL St. Louis DEN Denver CA $273 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:28/10/2025TANYT&leg2=from:DEN,to:STL,departure:04/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:272.40&airProductToken=AQptCjUIxJgBEgQxNTM2GPJcIOBcKJXH-wIw9cf7AjhFQABYAWoJTUFJTkJBU0lDcghWQVdOSDNCRwo0CMSYARIDNzA2GOBcIINpKKjJ-wIw6Mr7AjhFQAFYAWoJTUFJTkJBU0lDcghWQVdOSDNCRwptCjQIxJgBEgM0MzEYg2kg4Fwo7Zb8AjCfmPwCOEVAAFgBaglNQUlOQkFTSUNyCFZBV05IM0JHCjUIxJgBEgQxNDg1GOBcIPJcKO6Z_AIw0pr8AjhFQAFYAWoJTUFJTkJBU0lDcghWQVdOSDNCRxIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Wed, Nov 19 - Tue, Dec 9 STL St. Louis MCO Orlando CA $344 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:MCO,departure:19/11/2025TANYT&leg2=from:MCO,to:STL,departure:09/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:343.10&airProductToken=AQpGCiEIwYIBEgQyNDc1GPJcIOKaASjPwP0CMMHB_QI4T0AAWAEKIQjBggESBDMwNDUY4poBIMxwKOjB_QIw0sL9AjhPQAFYAQpGCiEIwYIBEgQxNjQ3GMxwIOKaASiUn_8CMIOg_wI4T0AAWAEKIQjBggESBDMxMzkY4poBIPJcKKSg_wIwpKH_AjhPQAFYARIKCAEQARgBKgJBQRgBIgQIARABKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Thu, Oct 23 - Sun, Oct 26 STL St. Louis DFW Dallas CA $352 Roundtrip found 11 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DFW,departure:23/10/2025TANYT&leg2=from:DFW,to:STL,departure:26/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:351.10&airProductToken=AQo0CjIIwYIBEgQyMjYxGPJcIKOxASiDjvsCMPiO-wI4QkAAWAFqBUJBU0lDcghPVkFMWU5CWAo0CjIIwYIBEgQyNDgwGKOxASDyXCjusPsCMNyx-wI4QkAAWAFqBUJBU0lDcghOVkFVRU5CWBIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Dec 17 - Tue, Dec 30 STL St. Louis DEN Denver CA $372 Roundtrip found 1 hour ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:17/12/2025TANYT&leg2=from:DEN,to:STL,departure:30/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:371.60&airProductToken=AQoiCiAI1YIBEgQxMzk2GPJcIINpKIT7_wIwmfz_AjhLQABYAQohCh8I1YIBEgM2NTIYg2kg8lworI6BAzCpj4EDOExAAFgBEgoIARABGAEqAlVBGAEiBAgBEAEoBDAB) ![Spirit Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/nk.gif) Thu, Oct 9 - Sun, Oct 12 STL St. Louis MCO Orlando CA $384 Roundtrip found 5 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:MCO,departure:09/10/2025TANYT&leg2=from:MCO,to:STL,departure:12/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:383.69&airProductToken=AQpaCisIzpYBEgQxNjM3GPJcIOVaKJ3z-QIwsvT5AjhSQABYAWoCU0RyBVJBM05SCisIzpYBEgQyMjA0GOVaIMxwKIX1-QIwx_X5AjhSQAFYAWoCU0RyBVJBM05SCloKKwjOlgESBDIyMDUYzHAg5VoonpL6AjDZkvoCOFJAAFgBagJTRHIFUkEzTlIKKwjOlgESBDE2MzYY5Vog8lwon5P6AjDGlPoCOFJAAVgBagJTRHIFUkEzTlISCggBEAEYASoCTksYASIECAEQASgCKAMoBDAN) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Oct 10 - Tue, Oct 14 STL St. Louis TPA Tampa CA $386 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:TPA,departure:10/10/2025TANYT&leg2=from:TPA,to:STL,departure:14/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:385.82&airProductToken=AQpuCjUIxJgBEgQyNzAwGPJcIOBcKOuA-gIwzIH6AjhFQABYAWoJTUFJTkJBU0lDcghYQVVPUTRCRwo1CMSYARIEMTU5MRjgXCDzAyjbgvoCMLGD-gI4RUABWAFqCU1BSU5CQVNJQ3IIWEFVT1E0QkcSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Dec 16 - Sat, Jan 10 STL St. Louis LAX Los Angeles CA $426 Roundtrip found 11 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAX,departure:16/12/2025TANYT&leg2=from:LAX,to:STL,departure:10/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:425.40&airProductToken=AQpvCjUIxJgBEgQ1Mjg2GPJcIMx8KOTv_wIww_D_AjhFQABYAWoJTUFJTkJBU0lDcghWQVZTQzJCQwo2CMSYARIEMjExORjMfCCLuAEo4vD_AjDX8v8COEVAAVgBaglNQUlOQkFTSUNyCFZBVlNDMkJDCm4KNQjEmAESAzc5MhiLuAEgzHwo5oiCAzDFioIDOEVAAFgBaglNQUlOQkFTSUNyCFZGV05IM0JRCjUIxJgBEgQ1MDM0GMx8IPJcKOWKggMwxIuCAzhFQAFYAWoJTUFJTkJBU0lDcghWRldOSDNCURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, Oct 23 - Sun, Oct 26 STL St. Louis DAL Dallas CA $437 Roundtrip found 11 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DAL,departure:23/10/2025TANYT&leg2=from:DAL,to:STL,departure:26/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:436.20&airProductToken=AQpuCjUIxJgBEgQxMzkzGPJcIOBcKLiU-wIwn5X7AjhFQABYAWoJTUFJTkJBU0lDcghYQVZTQTVCQwo1CMSYARIEMTEwNBjgXCCDWCjjlfsCMOeW-wI4RUABWAFqCU1BSU5CQVNJQ3IIWEFWU0E1QkMKbQo0CMSYARIDNTE2GINYIOBcKJSw-wIwjLH7AjhFQABYAWoJTUFJTkJBU0lDcghWQVZOUTNCRwo1CMSYARIEMTcwMxjgXCDyXCi4sfsCMJ6y-wI4RUABWAFqCU1BSU5CQVNJQ3IIVkFWTlEzQkcSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Oct 21 - Tue, Nov 4 STL St. Louis LAS Las Vegas CA $443 Roundtrip found 1 hour ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:21/10/2025TANYT&leg2=from:LAS,to:STL,departure:04/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:442.60&airProductToken=AQpFCiAIxJgBEgQ0NjY0GPJcIMx8KOr6-gIwyvv6AjhFQABYAQohCMSYARIEMTU0MhjMfCCLkAEoi_z6AjDX_foCOEVAAVgBCkQKIAjEmAESAzU0NBiLkAEg8hIoiZz8AjDgnPwCOEVAAFgBCiAIxJgBEgQyNjY2GPISIPJcKJed_AIwwJ78AjhFQAFYARIKCAEQARgBKgJETBgBIgQIARABKAQwAQ) ![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif) Tue, Nov 4 - Fri, Nov 14 STL St. Louis LAS Las Vegas CA $459 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:04/11/2025TANYT&leg2=from:LAS,to:STL,departure:14/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:458.20&airProductToken=AQpFCiAIyIIBEgQ3MDAxGPJcIJIBKKyW_AIwvZj8AjhVQABYAQohCMiCARIENjc1NhiSASCLkAEogpn8AjCmmvwCOFVAAVgBCkUKIQjIggESBDYxNDAYi5ABIJIBKLuO_QIw34_9AjhVQABYAQogCMiCARIENjkzOBiSASDyXCiLlP0CMP6V_QI4VUABWAESCggBEAEYASoCSEEYASIECAEQASgEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Oct 21 - Fri, Nov 7 STL St. Louis LAS Las Vegas CA $473 Roundtrip found 1 hour ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:21/10/2025TANYT&leg2=from:LAS,to:STL,departure:07/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:472.70&airProductToken=AQpDCh8IwaYBEgMzODgY8lwgkgEoyfz6AjDV_voCOFhAAFgBCiAIwaYBEgM0NzgYkgEgi5ABKKr_-gIwxoD7AjhYQAFYAQpDCiAIwaYBEgM3ODcYi5ABIJIBKNu__AIw_8D8AjhYQABYAQofCMGmARIDMzg4GJIBIPJcKKvF_AIwnsf8AjhYQAFYARIKCAEQARgBKgJBUxgBIgQIARABKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Fri, Feb 6 - Mon, Feb 9 STL St. Louis PHX Phoenix CA $497 Roundtrip found 12 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:PHX,departure:06/02/2026TANYT&leg2=from:PHX,to:STL,departure:09/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:496.40&airProductToken=AQpnCjEIwYIBEgQ2MzQyGPJcIK4cKOK5hAMwu7qEAzhCQABYAWoFQkFTSUNyCE5XRldaTkJYCjIIwYIBEgQxNjE0GK4cIO-5ASjtuoQDMN68hAM4QkABWAFqBUJBU0lDcghOV0ZXWk5CWAppCjMIwYIBEgQzMDg5GO-5ASCjsQEopNqEAzC324QDOEJAAFgBagVCQVNJQ3IITldGV1pOQlgKMgjBggESBDI3MzIYo7EBIPJcKLjchAMwn92EAzhCQAFYAWoFQkFTSUNyCE5XRldaTkJYEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Dec 26 - Fri, Jan 9 STL St. Louis SAN San Diego CA $820 Roundtrip found 21 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:SAN,departure:26/12/2025TANYT&leg2=from:SAN,to:STL,departure:09/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:820.00&airProductToken=AQpuCjUIxJgBEgQzNjM0GPJcIMx8KILlgAMw7OWAAzhFQABYAWoJTUFJTkJBU0lDcghMQVdPQTBCQwo1CMSYARIEMjE0NhjMfCCSaCiv5oADMJvogAM4RUABWAFqCU1BSU5CQVNJQ3IITEFXT0EwQkMKbQo0CMSYARIDODE5GJJoIOBcKJCFggMwhoeCAzhFQABYAWoJTUFJTkJBU0lDcghWQVZTQTZCQwo1CMSYARIEMTU3MRjgXCDyXCibiIIDMIiJggM4RUABWAFqCU1BSU5CQVNJQ3IIVkFWU0E2QkMSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Fri, Dec 26 - Fri, Jan 9 STL St. Louis CLD Carlsbad CA $907 Roundtrip found 21 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:CLD,departure:26/12/2025TANYT&leg2=from:CLD,to:STL,departure:09/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:906.70&airProductToken=AQqbAQoxCMGCARIEMzQ2MRjyXCCuHCi55YADMJLmgAM4QkAAWAFqBUJBU0lDcghOV0FJWk5CWgoyCMGCARIEMjI4MBiuHCDvuQEo1OmAAzC464ADOEJAAVgBagVCQVNJQ3IIVlZBS1VTQloKMgjBggESBDQyMjUY77kBIOIaKI_tgAMw5u2AAzhCQAFYAWoFQkFTSUNyCFZWQUtVU0JaCmgKMgjBggESBDQyMjcY4hog77kBKMP9gQMwlf6BAzhCQABYAWoFQkFTSUNyCE5WQUlZU0JYCjIIwYIBEgQyMzAzGO-5ASDyXCjI_oEDMPv_gQM4QkABWAFqBUJBU0lDcghOVkFJWVNCWBIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ## Flights from Southern Illinois: Essential Travel Information | Cheapest flight from Southern Illinois | CA $220 (roundtrip) | | --- | --- | | Best airlines to fly from Southern Illinois | American Airlines, Delta, United, Spirit Airlines, Hawaiian Airlines, Alaska Airlines | | Cheapest month to fly from Southern Illinois | October | | Southern Illinois IATA code | STL | | Southern Illinois Country/State | Illinois | | Airline ticket deals from Southern Illinois | CA $220 - CA $907 | ## How to find cheap flights from Southern Illinois #### How much is a flight from Southern Illinois? Flights from Southern Illinois are available at a range of prices. Attractive deals include one-way fares and roundtrip fares from CA $220. You'll often find the best deals in October. With Expedia, explore offers from multiple airlines and plan your journey effortlessly, ensuring you secure the perfect flight at a competitive price. #### How can I find cheap flights from Southern Illinois? Discovering affordable flights from Southern Illinois has never been easier, thanks to Expedia. We present a simple solution for comparing fares to a multitude of destinations, with one-way deals and roundtrip offers from CA $220. After choosing an enticing deal, enhance your search with our filters and sort by 'Price (Lowest)' to find the most economical and suitable options. Begin your journey with us today and relish the simplicity of securing cost-effective flights. #### How can I get the best deal on flights from Southern Illinois? For the best deal on flights from Southern Illinois, flexibility is key. Utilize our 'Show flexible dates' feature on Expedia to compare prices for different dates, and you may find deals when such offers are present. Remember, direct flights from Southern Illinois could come with a higher price tag, and different airlines' baggage policies might affect the total cost. Stay tuned with our latest offers to make the most of your travel budget. #### What is the best airline to fly with from Southern Illinois? With Expedia, finding the best airline for your journey from Southern Illinois is a breeze. We offer options from 20 different airlines, including American Airlines, Delta, United, Spirit Airlines, Hawaiian Airlines, Alaska Airlines. Whether you prioritize price, comfort, or loyalty programs, we have a fit for your travel needs. #### What is the best month to fly from Southern Illinois? The best month to fly from Southern Illinois is typically October, as it often offers great deals. If you're looking to save on your journey, start your search with Expedia. We provide options to filter for the lowest possible prices, including those from one-way and roundtrip from CA $220 fares. However, remember that airfare can fluctuate based on the time of year and ticket availability. #### When is the best time to book/buy flights from Southern Illinois? Secure the best savings with Expedia. Data suggests that booking flights from Southern Illinois three weeks in advance can save you up to 20%. Also, consider flying in October for the best rates. Stay updated with us for the latest data and savings advice. #### Are there any last-minute flights from Southern Illinois? With Expedia, finding last-minute flights from Southern Illinois has never been easier. We offer you a chance to explore the best deals from 20 airlines. Even if you're planning to travel immediately, you can access a variety of options, including one-way and roundtrip from CA $220 fares. Start exploring now and seize the top offers available over the next two weeks. Rest assured, you can find a perfect flight even at the last minute. #### Why book with Expedia? Choose Expedia for unbeatable prices, exceptional value, and substantial savings. We offer a wide selection of routes from Southern Illinois, with flight options from 20 airlines, including one-way deals . Customize your journey to suit your needs and achieve even more savings by bundling your flight with a hotel or car hire. Start planning your trip with us today and earn rewards points with every booking. #### Can I change/cancel my flight? Absolutely, at Expedia, you can change or cancel your flight. However, fees and refund policies depend on your flight agreement, as each airline has distinct rules for exchanges and refunds. For detailed information, check your itinerary or visit our customer service portal. To maximize flexibility, opt for flights with no change fees using our 'Flexible change policies' filter. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars ### Lodging - [Ashley Hotels](https://www.expedia.ca/Ashley-Hotels.d553248634983445011.Travel-Guide-Hotels) - [Belle Prairie City Hotels](https://www.expedia.ca/Belle-Prairie-City-Hotels.d553248634983187790.Travel-Guide-Hotels) - [Vacation Homes in Belle Prairie City](https://www.expedia.ca/Belle-Prairie-City-Private-Vacation-Homes.d553248634983187790-aaPrivateVacationHomes.Travel-Guide-Accommodation) - [Belle Rive Hotels](https://www.expedia.ca/Belle-Rive-Hotels.d78467.Travel-Guide-Hotels) - [Lodges in Belle Rive](https://www.expedia.ca/Belle-Rive-Lodges.d78467-aaLodges.Travel-Guide-Accommodation) - [Cheap Hotels in Benton](https://www.expedia.ca/Benton-Hotels-Cheap-Hotels.0-0-d6866-tCheapHotels.Travel-Guide-Filter-Hotels) - [Benton Hotels](https://www.expedia.ca/Benton-Hotels.d6866.Travel-Guide-Hotels) - [Villas in Benton](https://www.expedia.ca/Benton-Villas.d6866-aaVillas.Travel-Guide-Accommodation) - [Bluford Hotels](https://www.expedia.ca/Bluford-Hotels.d3000346134.Travel-Guide-Hotels) - [Guest Houses in Bonnie](https://www.expedia.ca/Bonnie-Guest-Houses.d553248634983230566-aaGuestHouses.Travel-Guide-Accommodation) - [Luxury Hotels in Bonnie](https://www.expedia.ca/Bonnie-Hotels-Luxury-Hotel.0-0-d553248634983230566-tLuxuryHotel.Travel-Guide-Filter-Hotels) - [Bonnie Hotels](https://www.expedia.ca/Bonnie-Hotels.d553248634983230566.Travel-Guide-Hotels) - [Lodges in Bonnie](https://www.expedia.ca/Bonnie-Lodges.d553248634983230566-aaLodges.Travel-Guide-Accommodation) - [Golf Hotels in Dix](https://www.expedia.ca/Dix-Hotels-Golf-Hotel.0-0-d6023670-tGolfHotel.Travel-Guide-Filter-Hotels) - [Hotels with Free Parking in Dix](https://www.expedia.ca/Dix-Hotels-Hotels-With-Free-Parking.0-0-d6023670-tHotelswithFreeParking.Travel-Guide-Filter-Hotels) - [Luxury Hotels in Dix](https://www.expedia.ca/Dix-Hotels-Luxury-Hotel.0-0-d6023670-tLuxuryHotel.Travel-Guide-Filter-Hotels) - [Pet-Friendly Hotels in Dix](https://www.expedia.ca/Dix-Hotels-Pet-Friendly-Hotel.0-0-d6023670-tPetfriendlyHotel.Travel-Guide-Filter-Hotels) - [Hotel Wedding Venues Hotels in Dix](https://www.expedia.ca/Dix-Hotels-Wedding-Hotels.0-0-d6023670-tWeddingHotels.Travel-Guide-Filter-Hotels) - [Dix Hotels](https://www.expedia.ca/Dix-Hotels.d6023670.Travel-Guide-Hotels) - [Motels in Dix](https://www.expedia.ca/Dix-Motels.d6023670-aaMotels.Travel-Guide-Accommodation) - [Cheap Hotels in Ewing](https://www.expedia.ca/Ewing-Hotels-Cheap-Hotels.0-0-d3000434034-tCheapHotels.Travel-Guide-Filter-Hotels) - [Ewing Hotels](https://www.expedia.ca/Ewing-Hotels.d3000434034.Travel-Guide-Hotels) - [Hotels near Franklin County Fairgrounds](https://www.expedia.ca/Franklin-County-Fairgrounds-Hotels.0-l6183528-0.Travel-Guide-Filter-Hotels) - [Ina Hotels](https://www.expedia.ca/Ina-Hotels.d3000434336.Travel-Guide-Hotels) - [Keenes Hotels](https://www.expedia.ca/Keenes-Hotels.d3000346359.Travel-Guide-Hotels) - [B&B in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Bed-And-Breakfast.d2463-aaBedAndBreakfast.Travel-Guide-Accommodation) - [Cabin Rentals in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Cabins.d2463-aaCabins.Travel-Guide-Accommodation) - [Cheap Hotels in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-Cheap-Hotels.0-0-d2463-tCheapHotels.Travel-Guide-Filter-Hotels) - [Hotels with a Pool in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-Hotel-With-Pool.0-0-d2463-tHotelwithPool.Travel-Guide-Filter-Hotels) - [Hotels with Balconies in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-Hotels-With-Balconies.0-0-d2463-tHotelswithBalconies.Travel-Guide-Filter-Hotels) - [Hotels with Free Breakfast in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-Hotels-With-Free-Breakfast.0-0-d2463-tHotelswithFreeBreakfast.Travel-Guide-Filter-Hotels) - [Lgbt Friendly Hotels in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-LGBT-Friendly-Hotel.0-0-d2463-tLGBTFriendlyHotel.Travel-Guide-Filter-Hotels) - [Luxury Hotels in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-Luxury-Hotel.0-0-d2463-tLuxuryHotel.Travel-Guide-Filter-Hotels) - [Marriott Hotels & Resorts in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-Marriott-Hotels-Resorts.0-0-d2463--bMarriottHotelsResorts.Travel-Guide-Filter-Hotels) - [Pet-Friendly Hotels in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-Pet-Friendly-Hotel.0-0-d2463-tPetfriendlyHotel.Travel-Guide-Filter-Hotels) - [Red Roof Inn Hotels in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-Red-Roof-Inn.0-0-d2463--bRedRoofInn.Travel-Guide-Filter-Hotels) - [Spa Hotels in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Hotels-Spa-Hotel.0-0-d2463-tSpaHotel.Travel-Guide-Filter-Hotels) - [Mount Vernon Hotels](https://www.expedia.ca/Mount-Vernon-Hotels.d2463.Travel-Guide-Hotels) - [Motels in Mount Vernon](https://www.expedia.ca/Mount-Vernon-Motels.d2463-aaMotels.Travel-Guide-Accommodation) - [Opdyke Hotels](https://www.expedia.ca/Opdyke-Hotels.d3000346486.Travel-Guide-Hotels) - [Radom Hotels](https://www.expedia.ca/Radom-Hotels.d553248634983385966.Travel-Guide-Hotels) - [Hotels near Rend Lake College](https://www.expedia.ca/Rend-Lake-College-Hotels.0-l553248635976063104-0.Travel-Guide-Filter-Hotels) - [Hotels near Rend Lake](https://www.expedia.ca/Rend-Lake-Hotels.0-l553248635976022396-0.Travel-Guide-Filter-Hotels) - [Richview Hotels](https://www.expedia.ca/Richview-Hotels.d553248634983461489.Travel-Guide-Hotels) - [Villas in Richview](https://www.expedia.ca/Richview-Villas.d553248634983461489-aaVillas.Travel-Guide-Accommodation) - [B&B in Sesser](https://www.expedia.ca/Sesser-Bed-And-Breakfast.d3000435307-aaBedAndBreakfast.Travel-Guide-Accommodation) - [Sesser Hotels](https://www.expedia.ca/Sesser-Hotels.d3000435307.Travel-Guide-Hotels) - [Resorts in Sesser](https://www.expedia.ca/Sesser-Resort-Hotels.d3000435307-aaResortHotels.Travel-Guide-Accommodation) - [Sims Hotels](https://www.expedia.ca/Sims-Hotels.d3000346582.Travel-Guide-Hotels) - [Motels in Sims](https://www.expedia.ca/Sims-Motels.d3000346582-aaMotels.Travel-Guide-Accommodation) - [Apartments in Walnut Hill](https://www.expedia.ca/Walnut-Hill-Apartments.d553248634983204234-aaApartments.Travel-Guide-Accommodation) - [Cabin Rentals in Walnut Hill](https://www.expedia.ca/Walnut-Hill-Cabins.d553248634983204234-aaCabins.Travel-Guide-Accommodation) - [Waltonville Hotels](https://www.expedia.ca/Waltonville-Hotels.d3000346646.Travel-Guide-Hotels) - [Wayne City Hotels](https://www.expedia.ca/Wayne-City-Hotels.d553248634983084568.Travel-Guide-Hotels) - [Hotels near Wayne Fitzgerrell State Park](https://www.expedia.ca/Wayne-Fitzgerrell-State-Park-Hotels.0-l553248621532655939-0.Travel-Guide-Filter-Hotels) - [B&B in Whittington](https://www.expedia.ca/Whittington-Bed-And-Breakfast.d56062-aaBedAndBreakfast.Travel-Guide-Accommodation) - [Lgbt Friendly Hotels in Whittington](https://www.expedia.ca/Whittington-Hotels-LGBT-Friendly-Hotel.0-0-d56062-tLGBTFriendlyHotel.Travel-Guide-Filter-Hotels) - [Luxury Hotels in Whittington](https://www.expedia.ca/Whittington-Hotels-Luxury-Hotel.0-0-d56062-tLuxuryHotel.Travel-Guide-Filter-Hotels) - [Shopping Hotels in Whittington](https://www.expedia.ca/Whittington-Hotels-Shopping-Hotel.0-0-d56062-tShoppingHotel.Travel-Guide-Filter-Hotels) - [Whittington Hotels](https://www.expedia.ca/Whittington-Hotels.d56062.Travel-Guide-Hotels) ### Flights - [Flights to Benton](https://www.expedia.ca/Cheap-Flights-To-Benton.d6866.Travel-Guide-Flights) - [Flights to Ina](https://www.expedia.ca/Cheap-Flights-To-Ina.d3000434336.Travel-Guide-Flights) - [Flights to Macedonia](https://www.expedia.ca/Cheap-Flights-To-Macedonia.d553248634983385273.Travel-Guide-Flights) - [Flights to Mount Vernon](https://www.expedia.ca/Cheap-Flights-To-Mount-Vernon.d2463.Travel-Guide-Flights) - [Flights from Carbondale](https://www.expedia.ca/lp/flights/2248/flights-from-carbondale) - [Flights from Mount Vernon](https://www.expedia.ca/lp/flights/2463/flights-from-mount-vernon) - [Flights from Carrier Mills](https://www.expedia.ca/lp/flights/3000346165/flights-from-carrier-mills) - [Flights from Christopher](https://www.expedia.ca/lp/flights/3000346181/flights-from-christopher) - [Flights from Elkville](https://www.expedia.ca/lp/flights/3000346241/flights-from-elkville) - [Flights from Percy](https://www.expedia.ca/lp/flights/3000346509/flights-from-percy) - [Flights from Walsh](https://www.expedia.ca/lp/flights/3000346644/flights-from-walsh) - [Flights from Waltonville](https://www.expedia.ca/lp/flights/3000346646/flights-from-waltonville) - [Flights from Willisville](https://www.expedia.ca/lp/flights/3000346660/flights-from-willisville) - [Flights from Ava](https://www.expedia.ca/lp/flights/3000420830/flights-from-ava) - [Flights from Ewing](https://www.expedia.ca/lp/flights/3000434034/flights-from-ewing) - [Flights from Goreville](https://www.expedia.ca/lp/flights/3000434209/flights-from-goreville) - [Flights from Sesser](https://www.expedia.ca/lp/flights/3000435307/flights-from-sesser) - [Flights from Iola](https://www.expedia.ca/lp/flights/553248634983119784/flights-from-iola) - [Flights from Dahlgren](https://www.expedia.ca/lp/flights/553248634983269993/flights-from-dahlgren) - [Flights from Lenzburg](https://www.expedia.ca/lp/flights/553248634983320453/flights-from-lenzburg) - [Flights from Macedonia](https://www.expedia.ca/lp/flights/553248634983385273/flights-from-macedonia) - [Flights from Cutler](https://www.expedia.ca/lp/flights/553248634983416529/flights-from-cutler) - [Flights from Maunie](https://www.expedia.ca/lp/flights/553248634983435605/flights-from-maunie) - [Flights from Shawneetown](https://www.expedia.ca/lp/flights/553248634983492855/flights-from-shawneetown) - [Flights from Richland County](https://www.expedia.ca/lp/flights/553248635976431535/flights-from-richland-county) - [Flights from Sparta](https://www.expedia.ca/lp/flights/55972/flights-from-sparta) - [Flights from Whittington](https://www.expedia.ca/lp/flights/56062/flights-from-whittington) - [Flights from Breese](https://www.expedia.ca/lp/flights/6035281/flights-from-breese) - [Flights from Carterville](https://www.expedia.ca/lp/flights/6283910/flights-from-carterville) - [Flights from Benton](https://www.expedia.ca/lp/flights/6866/flights-from-benton) - [Flights from Alto Pass](https://www.expedia.ca/lp/flights/73449/flights-from-alto-pass) - [Flights from Harrisburg](https://www.expedia.ca/lp/flights/7740/flights-from-harrisburg) - [Flights from Belle Rive](https://www.expedia.ca/lp/flights/78467/flights-from-belle-rive) - [Flights from Du Quoin](https://www.expedia.ca/lp/flights/98092/flights-from-du-quoin) - [Flights from Vancouver (YVR) to Mount Vernon (MVN)](https://www.expedia.ca/lp/flights/yvr/mvn/vancouver-to-mount-vernon) ### Packages - [Visit Benton](https://www.expedia.ca/Benton.dx6866) - [King City Square Shopping Center](https://www.expedia.ca/King-City-Square-Shopping-Center-Mount-Vernon.d6186667.Vacation-Attraction) ### Cars - [Car rental Mount Vernon](https://www.expedia.ca/Car-Rentals-In-Mount-Vernon.d2463.Car-Rental-Guide) - [Car rental Sims](https://www.expedia.ca/Car-Rentals-In-Sims.d3000346582.Car-Rental-Guide) - [Enterprise Rental Cars in Benton](https://www.expedia.ca/Enterprise-Car-Rentals-In-Benton.d6866-c15.Car-Rental-Guide-Suppliers) \*Available to Expedia members.