Title: Cheap Flights to St. Louis , MO from CA $131 - Expedia.ca ![](https://images.trvl-media.com/place/178309/1d118261-eb93-42dd-aeef-5f82e1f037e8.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178309/1d118261-eb93-42dd-aeef-5f82e1f037e8.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to St. Louis , MO from CA $131 [View CA $131 flight on Thu, Oct 16, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:DTW,to:STL,departure:16/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:130.80&airProductToken=AQo4CjYIxJgBEgQyODY4GOO0ASDyXCjHwPoCMK3B-gI4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWV0I0QkMSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) - [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 [St. Louis Travel Guide](https://expedia.ca/St-Louis.dx178309)[Hotels in St. Louis](https://expedia.ca/St-Louis-Hotels.d178309.Travel-Guide-Hotels)[Things to do in St. Louis](https://expedia.ca/Things-To-Do-In-St-Louis.d178309.Travel-Guide-Activities)[St. Louis Car Rentals](https://expedia.ca/Car-Rentals-In-St-Louis.d178309.Car-Rental-Guide)[St. Louis Vacation Packages](https://expedia.ca/St-Louis.d178309.Destination-Travel-Guides) ## Popular airlines to St. Louis - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Missouri, United States of America,departure:30/09/2025TANYT&leg2=from:St. Louis, Missouri, United States of America,to:CMH,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Missouri, United States of America,departure:30/09/2025TANYT&leg2=from:St. Louis, Missouri, United States of America,to:CMH,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Missouri, United States of America,departure:30/09/2025TANYT&leg2=from:St. Louis, Missouri, United States of America,to:CMH,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Southwest Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Missouri, United States of America,departure:30/09/2025TANYT&leg2=from:St. Louis, Missouri, United States of America,to:CMH,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Missouri, United States of America,departure:30/09/2025TANYT&leg2=from:St. Louis, Missouri, United States of America,to:CMH,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![Frontier Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Missouri, United States of America,departure:30/09/2025TANYT&leg2=from:St. Louis, Missouri, United States of America,to:CMH,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Missouri, United States of America,departure:30/09/2025TANYT&leg2=from:St. Louis, Missouri, United States of America,to:CMH,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) ![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) ## How much is the cheapest flight to St. Louis? Prices were available within the past 7 days and start at CA $131 for one-way flights and CA $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Oct 11 - Tue, Oct 14 DTW Detroit STL St. Louis CA $244 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:11/10/2025TANYT&leg2=from:STL,to:DTW,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:243.20&airProductToken=AQo4CjYIxJgBEgQyODIyGOO0ASDyXCjLi_oCMKyM-gI4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWV0gxQkMKOAo2CMSYARIEMTYyNhjyXCDjtAEovKn6AjCYqvoCOEVAAFgBaglNQUlOQkFTSUNyCFZBV1dDMkJDEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Wed, Oct 29 - Sat, Nov 8 DTW Detroit STL St. Louis CA $252 Roundtrip found 7 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:29/10/2025TANYT&leg2=from:STL,to:DTW,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:252.00&airProductToken=AQpnCjIIwYIBEgQzNDI4GOO0ASCuHCjj1PsCML3V-wI4QkAAWAFqBUJBU0lDcghPVkFJWFNCWAoxCMGCARIEMTkyNhiuHCDyXCj51_sCMNbY-wI4QkABWAFqBUJBU0lDcghPVkFJWFNCWApnCjEIwYIBEgQ2MzA4GPJcIK4cKI_E_AIw8cT8AjhCQABYAWoFQkFTSUNyCE9WQUlYU0JYCjIIwYIBEgQ2MzczGK4cIOO0ASiEyPwCMNvI_AI4QkABWAFqBUJBU0lDcghPVkFJWFNCWBIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Oct 11 - Sat, Oct 25 DTW Detroit STL St. Louis CA $352 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:11/10/2025TANYT&leg2=from:STL,to:DTW,departure:25/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:351.70&airProductToken=AQpFCiEI1YIBEgQ0NzQ5GOO0ASCuHCikifoCMIGK-gI4S0AAWAEKIAjVggESBDE4NzIYrhwg8lwo24r6AjCvi_oCOEtAAVgBCkUKIAjVggESBDIxNDQY8lwgrhwo9af7AjDKqPsCOEtAAFgBCiEI1YIBEgQyMzI5GK4cIOO0ASjtqPsCMMOp-wI4S0ABWAESCggBEAEYASoCVUEYASIECAEQASgEMAE) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, Nov 4 - Sat, Nov 15 YYC Calgary STL St. Louis CA $506 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YYC,to:STL,departure:04/11/2025TANYT&leg2=from:STL,to:YYC,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:505.58&airProductToken=AQpFCiAIwYYBEgMxMzAYmBYgmM4BKJ2W_AIwiJj8AjhHQABYAQohCMGGARIEODk2ORiYzgEg8lwolJn8AjCpmvwCOEdAAVgBCkUKIQjBhgESBDg5NzAY8lwgmM4BKK2W_QIwppf9AjhHQABYAQogCMGGARIDMTU5GJjOASCYFijKmP0CMNKa_QI4R0ABWAESCggBEAEYASoCQUMYASIECAEQASgIKAQwAQ) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, Oct 15 - Tue, Oct 21 YVR Vancouver STL St. Louis CA $521 Roundtrip found 21 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:15/10/2025TANYT&leg2=from:STL,to:YVR,departure:21/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:520.67&airProductToken=AQpgCi8IwaYBEgQyMDMwGLiNASCSASjmufoCMK26-gI4WEAAWAFqAlNWcghPSDlPQUpCTgotCMGmARIDNDcyGJIBIPJcKP66-gIw77z6AjhYQAFYAWoCU1ZyCE9IOU9BSkJOCl8KLQjBpgESAzQ3MxjyXCCSASiV-PoCMKX6-gI4WEAAWAFqAlNWcghPSDlPQUpCTgouCMGmARIDOTI1GJIBILiNASi_-_oCMIT8-gI4WEABWAFqAlNWcghPSDlPQUpCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ## Find the cheapest month to fly from Columbus (CMH) to St. Louis (STL) ### August is typically the cheapest month to fly From CA $199 - CA $693 per traveller. ## Book with confidence Expedia.ca gives you the best tools to secure great deals on flights to St. Louis. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to St. Louis. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to St. Louis. Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your St. Louis flights with full confidence knowing that you've found the best deal online. Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to St. Louis. Looking to save even more? Get additional savings by bundling your St. Louis flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your St. Louis trip! ## Travel information | Destination airport | Lambert-St. Louis Intl. | | --- | --- | | Destination airport IATA code | STL | | Destination city name | St. Louis | | Roundtrip price | CA $241 | ## Trending flights to St. Louis Prices were available within the past 7 days and start at CA $131 for one-way flights and CA $244 for round trip, 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) Wed, Nov 5 - Mon, Nov 10 YYC Calgary STL St. Louis CA $358 Roundtrip found 9 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YYC,to:STL,departure:05/11/2025TANYT&leg2=from:STL,to:YYC,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:357.92&airProductToken=AQqbAQoyCMGCARIEMTk3MxiYFiCjsQEo4aT8AjDMpvwCOEJAAFgBagVCQVNJQ3IIT1ZBQ1pOQlgKMgjBggESBDIyMjEYo7EBIK4cKJ6o_AIwsan8AjhCQAFYAWoFQkFTSUNyCE9WQUNaTkJYCjEIwYIBEgQ0OTcwGK4cIPJcKNys_AIwsa38AjhCQAFYAWoFQkFTSUNyCE9WQUlYU0JYCpsBCjEIwYIBEgQ0OTI0GPJcIK4cKPbf_AIw0eD8AjhCQABYAWoFQkFTSUNyCE9WQUlYU0JYCjIIwYIBEgQyODk2GK4cIKOxASim5PwCMMbl_AI4QkABWAFqBUJBU0lDcghPVkFDWk5CWAoyCMGCARIEMTk3MxijsQEgmBYo8OX8AjDk5_wCOEJAAVgBagVCQVNJQ3IIT1ZBQ1pOQlgSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ## Explore a world of travel with Expedia \*Available to Expedia members. ![](https://a.travel-assets.com/mad-service/footer/bnaBanners/BEX_Footer.jpg) ## Go further with the Expedia app Save on select hotels and earn double points when you book on the app. Our app deals help you to save on trips so you can travel more and manage it all on the go. Scan the QR code with your device camera and download our app ![QR code to download the app](data:image/png;base64,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)