Title:  Cheap Flights from Southern Illinois - Expedia.ca

  

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# 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

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[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
    

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## 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

![Spirit Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/nk.gif)

Sun, Jan 25 - Wed, Feb 4

STL

St. Louis

TPA

Tampa

CA $255

Roundtrip

found 4 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:TPA,departure:25/01/2026TANYT&leg2=from:TPA,to:STL,departure:04/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:254.87&airProductToken=AQpcCiwIzpYBEgQyMTU4GPJcIOVaKKyzgwMwy7SDAzhHQABYAWoCUlByBkdBMjFOUgosCM6WARIEMjE0ORjlWiDzAyiHt4MDMMa3gwM4R0ABWAFqAlJQcgZHQTIxTlISCggBEAEYASoCTksYASIECAEQASgCKAMoBDAN)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Dec 3 - Sat, Dec 13

STL

St. Louis

DFW

Dallas

CA $275

Roundtrip

found 3 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DFW,departure:03/12/2025TANYT&leg2=from:DFW,to:STL,departure:13/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:274.30&airProductToken=AQpECiAIxJgBEgQxNzAzGPJcIOBcKOTe_gIwzN_-AjhFQABYAQogCMSYARIDMzc0GOBcIKOxASin4P4CML7h_gI4RUABWAEKRAogCMSYARIDOTYxGKOxASDgXCiez_8CMJfQ_wI4RUAAWAEKIAjEmAESBDE0ODUY4Fwg8lwoyND_AjCw0f8COEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Dec 31 - Sat, Jan 17

STL

St. Louis

MIA

Miami

CA $275

Roundtrip

found 17 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:MIA,departure:31/12/2025TANYT&leg2=from:MIA,to:STL,departure:17/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:274.30&airProductToken=AQpECiAIxJgBEgQxNTI0GPJcIOBcKJCXgQMw9peBAzhFQABYAQogCMSYARIEMTMzMhjgXCCMAiiAmYEDMPSZgQM4RUABWAEKRAogCMSYARIEMTIxMRiMAiDgXCiw1oIDMK3XggM4RUAAWAEKIAjEmAESBDE0MDAY4Fwg8lwooNiCAzCO2YIDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Wed, Dec 3 - Mon, Dec 15

STL

St. Louis

TPA

Tampa

CA $289

Roundtrip

found 4 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:TPA,departure:03/12/2025TANYT&leg2=from:TPA,to:STL,departure:15/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:288.20&airProductToken=AQpECiAIxJgBEgQzMTU2GPJcIOBcKPff_gIw2OD-AjhFQABYAQogCMSYARIEMTU5NBjgXCDzAyiL4f4CMOPh_gI4RUABWAEKRAogCMSYARIEMTU5NBjzAyDgXCik6f8CMIrq_wI4RUAAWAEKIAjEmAESBDE0MDMY4Fwg8lwozer_AjC06_8COEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Mon, Nov 24 - Thu, Dec 11

STL

St. Louis

DAL

Dallas

CA $290

Roundtrip

found 3 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DAL,departure:24/11/2025TANYT&leg2=from:DAL,to:STL,departure:11/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:289.30&airProductToken=AQpDCiAIxJgBEgQxNTcxGPJcIOBcKMX4_QIwpPn9AjhFQABYAQofCMSYARIDNTEyGOBcIINYKJD6_QIwmPv9AjhFQAFYAQpDCh8IxJgBEgM1MTYYg1gg4Fwolbb_AjCVt_8COEVAAFgBCiAIxJgBEgQxNzAzGOBcIPJcKL-3_wIwrbj_AjhFQAFYARIKCAEQARgBKgJETBgBIgQIARABKAQwAQ)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Tue, Nov 11 - Mon, Nov 24

STL

St. Louis

DFW

Dallas

CA $293

Roundtrip

found 3 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DFW,departure:11/11/2025TANYT&leg2=from:DFW,to:STL,departure:24/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:292.20&airProductToken=AQojCiEIwYIBEgQyMjg5GPJcIKOxASim5_wCMJzo_AI4T0AAWAEKIwohCMGCARIEMjI0NhijsQEg8lwotPz9AjCa_f0COE9AAFgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Sat, Nov 8 - Mon, Nov 10

STL

St. Louis

DEN

Denver

CA $303

Roundtrip

found 2 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:08/11/2025TANYT&leg2=from:DEN,to:STL,departure:10/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:302.20&airProductToken=AQpoCjIIwYIBEgQxNDEwGPJcIKOxASisw_wCMK7E_AI4QkAAWAFqBUJBU0lDcghPVkFVVU5CVgoyCMGCARIEMjU3ORijsQEgg2ko8cT8AjD3xfwCOEJAAVgBagVCQVNJQ3IIT1ZBVVVOQlYKaAoyCMGCARIEMzI5ORiDaSDimgEoo-L8AjDZ4_wCOEJAAFgBagVCQVNJQ3IIT1ZBSVZTQlYKMgjBggESBDI0NzUY4poBIPJcKKrl_AIwp-b8AjhCQAFYAWoFQkFTSUNyCE9WQUlWU0JWEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Sat, Nov 15 - Wed, Dec 3

STL

St. Louis

PHX

Phoenix

CA $306

Roundtrip

found 4 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:PHX,departure:15/11/2025TANYT&leg2=from:PHX,to:STL,departure:03/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:305.10&airProductToken=AQojCiEIwYIBEgQyNTc0GPJcIO-5ASiMkv0CMOST_QI4T0AAWAEKIwohCMGCARIEMjA0MxjvuQEg8lwoluP-AjDE5P4COE9AAFgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Mon, Nov 10 - Sat, Nov 15

STL

St. Louis

MCO

Orlando

CA $331

Roundtrip

found 2 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:MCO,departure:10/11/2025TANYT&leg2=from:MCO,to:STL,departure:15/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:330.20&airProductToken=AQpuCjUIxJgBEgQxNTcxGPJcIOBcKIXb_AIw5Nv8AjhFQABYAWoJTUFJTkJBU0lDcghWQVdTQTBCQwo1CMSYARIEMTU3NhjgXCDMcCiW3PwCMO7c_AI4RUABWAFqCU1BSU5CQVNJQ3IIVkFXU0EwQkMKbgo1CMSYARIEMjA4MBjMcCDgXCjQkf0CMLiS_QI4RUAAWAFqCU1BSU5CQVNJQ3IIVkFXU0EwQkMKNQjEmAESBDE3MDMY4Fwg8lwo65L9AjDXk_0COEVAAVgBaglNQUlOQkFTSUNyCFZBV1NBMEJDEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ)

![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif)

Sat, Jan 24 - Sat, Feb 7

STL

St. Louis

TPA

Tampa

CA $406

Roundtrip

found 3 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:TPA,departure:24/01/2026TANYT&leg2=from:TPA,to:STL,departure:07/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:405.40&airProductToken=AQpECiAI1YIBEgQ0Mzk1GPJcIK4cKNCngwMwr6iDAzhLQABYAQogCNWCARIEMTA1NxiuHCDzAyjrqIMDMJiqgwM4S0ABWAEKQwofCNWCARIDNzUyGPMDIK4cKOzDhAMwosWEAzhLQABYAQogCNWCARIENDUxMBiuHCDyXCj0xYQDMMzGhAM4S0ABWAESCggBEAEYASoCVUEYASIECAEQASgEMAE)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Thu, Dec 11 - Mon, Dec 15

STL

St. Louis

LAS

Las Vegas

CA $414

Roundtrip

just found

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:11/12/2025TANYT&leg2=from:LAS,to:STL,departure:15/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:414.00&airProductToken=AQppCjIIwYIBEgQyNDg2GPJcIOKaASj5uf8CMOm6_wI4QkAAWAFqBUJBU0lDcghRV0FJWlNCVgozCMGCARIEMTMyMxjimgEgi5ABKNG8_wIw_L7_AjhCQAFYAWoFQkFTSUNyCFFXQUlaU0JWCmkKMwjBggESBDE2MTAYi5ABIOKaASj56_8CMPDt_wI4QkAAWAFqBUJBU0lDcghRV0FJWlNCVgoyCMGCARIEMzEzORjimgEg8lwohO__AjCE8P8COEJAAVgBagVCQVNJQ3IIUVdBSVpTQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL)

![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif)

Tue, Nov 18 - Fri, Dec 5

STL

St. Louis

LAS

Las Vegas

CA $422

Roundtrip

found 4 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:18/11/2025TANYT&leg2=from:LAS,to:STL,departure:05/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:421.50&airProductToken=AQpFCiAIyIIBEgQ3MDAxGPJcIJIBKOyz_QIw_bX9AjhVQABYAQohCMiCARIENjc1NhiSASCLkAEowrb9AjDmt_0COFVAAVgBCkUKIQjIggESBDYxNDAYi5ABIJIBKK76_gIw2_v-AjhVQABYAQogCMiCARIENjkzOBiSASDyXCiCgP8CMOuB_wI4VUABWAESCggBEAEYASoCSEEYASIECAEQASgEMAE)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Sat, Nov 15 - Mon, Nov 17

STL

St. Louis

LAX

Los Angeles

CA $433

Roundtrip

found 5 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAX,departure:15/11/2025TANYT&leg2=from:LAX,to:STL,departure:17/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:433.00&airProductToken=AQo0CjIIwYIBEgQ0ODg1GPJcIIu4ASiMkv0CMJWU_QI4QkAAWAFqBUJBU0lDcghOV0ZXVU5CWAo0CjIIwYIBEgQ2NTAyGIu4ASDyXCjprv0CMLaw_QI4QkAAWAFqBUJBU0lDcghOV0ZXWk5CWBIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs)

![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif)

Sun, Dec 7 - Fri, Dec 12

STL

St. Louis

LAS

Las Vegas

CA $450

Roundtrip

found 3 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:07/12/2025TANYT&leg2=from:LAS,to:STL,departure:12/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:449.50&airProductToken=AQpDCh8IwaYBEgM0NzMY8lwgkgEozIn_AjDki_8COFhAAFgBCiAIwaYBEgM3NjgYkgEgi5ABKPKP_wIwjJH_AjhYQAFYAQpDCiAIwaYBEgM3ODcYi5ABIJIBKI7J_wIwu8r_AjhYQABYAQofCMGmARIDMzg4GJIBIPJcKOLO_wIwy9D_AjhYQAFYARIKCAEQARgBKgJBUxgBIgQIARABKAQwAQ)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Thu, Nov 27 - Tue, Dec 2

STL

St. Louis

RSW

Fort Myers

CA $476

Roundtrip

found 4 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:RSW,departure:27/11/2025TANYT&leg2=from:RSW,to:STL,departure:02/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:475.30&airProductToken=AQpFCiAIxJgBEgQxNzAzGPJcIOBcKICb_gIw4Zv-AjhFQABYAQohCMSYARIEMTQ4OBjgXCDRtAEoip3-AjDsnf4COEVAAVgBCkUKIQjEmAESBDExMTAY0bQBIOBcKO7V_gIw4db-AjhFQABYAQogCMSYARIEMjgzMxjgXCDyXCjH1_4CMK3Y_gI4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE)

![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif)

Fri, Jan 23 - Sun, Jan 25

STL

St. Louis

SAN

San Diego

CA $533

Roundtrip

found 3 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:SAN,departure:23/01/2026TANYT&leg2=from:SAN,to:STL,departure:25/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:532.30&airProductToken=AQpfCi0IwaYBEgM2MTgY8lwgkgEogp6DAzCVoIMDOFhAAFgBagJTVnIIT0gyT0FVQk4KLgjBpgESBDEzNjkYkgEgkmgoxaGDAzDtooMDOFhAAVgBagJTVnIIT0gyT0FVQk4KXgotCMGmARIDNjUyGJJoIJIBKJq4gwMw3bmDAzhYQABYAWoCU1ZyCE9IMk9BVkJOCi0IwaYBEgM2MTgYkgEg8lwou72DAzCqv4MDOFhAAVgBagJTVnIIUUgyT0FVQk4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Tue, Nov 11 - Wed, Nov 26

EVV

Evansville

DFW

Dallas

CA $543

Roundtrip

found 1 day ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:EVV,to:DFW,departure:11/11/2025TANYT&leg2=from:DFW,to:EVV,departure:26/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:543.00&airProductToken=AQpFCiEIxJgBEgQ1Mzc3GKStASDgXCih6vwCMP_q_AI4RUAAWAEKIAjEmAESAzgxOBjgXCCjsQEohOz8AjCY7fwCOEVAAVgBCkUKIAjEmAESAzk2MRijsQEg4Fwo-4_-AjD3kP4COEVAAFgBCiEIxJgBEgQ1Mzc3GOBcIKStASj6kf4CMNOS_gI4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Fri, Jan 23 - Sun, Jan 25

STL

St. Louis

CLD

Carlsbad

CA $582

Roundtrip

found 3 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:CLD,departure:23/01/2026TANYT&leg2=from:CLD,to:STL,departure:25/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:581.70&airProductToken=AQpoCjIIwYIBEgQyNTc0GPJcIO-5ASicnIMDMP-dgwM4QkAAWAFqBUJBU0lDcghOV0ZXWk5CWAoyCMGCARIENDIyNhjvuQEg4hoo95-DAzDCoIMDOEJAAVgBagVCQVNJQ3IIT1ZBS1pTQlgKaAoyCMGCARIENDIyNRjiGiDvuQEovrSDAzCPtYMDOEJAAFgBagVCQVNJQ3IIT1ZBS1pTQlgKMgjBggESBDIwNDMY77kBIPJcKLq3gwMw57iDAzhCQAFYAWoFQkFTSUNyCE5XRldaTkJYEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw)

![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif)

Sat, Oct 25 - Mon, Nov 10

EVV

Evansville

DAL

Dallas

CA $662

Roundtrip

found 1 day ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:EVV,to:DAL,departure:25/10/2025TANYT&leg2=from:DAL,to:EVV,departure:10/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:661.30&airProductToken=AQpFCiEIxJgBEgQ1MzYyGKStASDgXCj2pPsCMNGl-wI4VEAAWAEKIAjEmAESBDExMTUY4Fwgg1golKb7AjCap_sCOFRAAVgBCkQKHwjEmAESAzUxMhiDWCDgXCiH3vwCMIHf_AI4VEAAWAEKIQjEmAESBDUzNzgY4FwgpK0BKKDg_AIw-OD8AjhUQAFYARIKCAEQARgBKgJETBgBIgQIARABKAQwAQ)

![Spirit Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/nk.gif)

Thu, Dec 18 - Sun, Dec 21

STL

St. Louis

LAS

Las Vegas

CA $684

Roundtrip

found 5 days ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:18/12/2025TANYT&leg2=from:LAS,to:STL,departure:21/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:683.20&airProductToken=AQpWCikIzpYBEgQyMTU4GPJcIOVaKOyHgAMwi4mAAzhNQABYAWoCU0RyA01OUgopCM6WARIDNzc3GOVaIIuQASifi4ADMNqNgAM4TUABWAFqAlNEcgNNTlIKVgopCM6WARIDOTU0GIuQASDlWijvpIADMP-mgAM4S0AAWAFqAlNEcgNLTlIKKQjOlgESBDIxNTcY5Vog8lwozaeAAzD9qIADOEtAAVgBagJTRHIDS05SEgoIARABGAEqAk5LGAEiBAgBEAEoAigDKAQwDQ)

### 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 $255. You'll often find the best deals in January. 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 $255. 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 Spirit Airlines, Delta, American Airlines, United, 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 January, 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 $255 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 January 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 $255 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.

## Travel information

## Flights from Southern Illinois: Essential Travel Information

| Cheapest flight from Southern Illinois | CA $255 (roundtrip) |
| --- | --- |
| Best airlines to fly from Southern Illinois | Spirit Airlines, Delta, American Airlines, United, Hawaiian Airlines, Alaska Airlines |
| Cheapest month to fly from Southern Illinois | January |
| Southern Illinois IATA code | STL |
| Southern Illinois Country/State | Illinois |
| Airline ticket deals from Southern Illinois | CA $255 - CA $684 |

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