Title: Cheap Flights to Byrnes Mill , MO from CA $121 - Expedia.ca ![Default HTG hotel image](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](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 to Byrnes Mill , MO from CA $121 [View CA $121 flight on Tue, May 5, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:SEA,to:STL,departure:05/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:120.70&airProductToken=AQpECiAIxJgBEgQxMDE2GJIBIPISKNKXjAMw05iMAzhFQABYAQogCMSYARIEMjQyMRjyEiDyXCj8mIwDMKKajAM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) [Byrnes Mill Travel Guide](https://expedia.ca/Byrnes-Mill.dx553248634983534850)[Hotels in Byrnes Mill](https://expedia.ca/Byrnes-Mill-Hotels.d553248634983534850.Travel-Guide-Hotels)[Byrnes Mill Car Rentals](https://expedia.ca/Car-Rentals-In-Byrnes-Mill.d553248634983534850.Car-Rental-Guide)[Byrnes Mill Vacation Packages](https://expedia.ca/Byrnes-Mill.d553248634983534850.Destination-Travel-Guides) ## Popular 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:Byrnes Mill, Missouri, United States of America,departure:10/03/2026TANYT&leg2=from:Byrnes Mill, Missouri, United States of America,to:CMH,departure:17/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](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:Byrnes Mill, Missouri, United States of America,departure:10/03/2026TANYT&leg2=from:Byrnes Mill, Missouri, United States of America,to:CMH,departure:17/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](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:Byrnes Mill, Missouri, United States of America,departure:10/03/2026TANYT&leg2=from:Byrnes Mill, Missouri, United States of America,to:CMH,departure:17/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](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:Byrnes Mill, Missouri, United States of America,departure:10/03/2026TANYT&leg2=from:Byrnes Mill, Missouri, United States of America,to:CMH,departure:17/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![](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:Byrnes Mill, Missouri, United States of America,departure:10/03/2026TANYT&leg2=from:Byrnes Mill, Missouri, United States of America,to:CMH,departure:17/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![](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:Byrnes Mill, Missouri, United States of America,departure:10/03/2026TANYT&leg2=from:Byrnes Mill, Missouri, United States of America,to:CMH,departure:17/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](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:Byrnes Mill, Missouri, United States of America,departure:10/03/2026TANYT&leg2=from:Byrnes Mill, Missouri, United States of America,to:CMH,departure:17/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](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\* - ![](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\* - ![](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 Byrnes Mill? Prices were available within the past 7 days and start at CA $121 for one-way flights and CA $242 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) Tue, May 12 - Tue, May 19 SEA Seattle STL St. Louis CA $242 Roundtrip found 14 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:STL,departure:12/05/2026TANYT&leg2=from:STL,to:SEA,departure:19/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:241.40&airProductToken=AQpDCh8IxJgBEgM1MzYYkgEgzHwoiuaMAzDb54wDOEVAAFgBCiAIxJgBEgQxNjA1GMx8IPJcKP_njAMw2uiMAzhFQAFYAQpDCiAIxJgBEgQyNDU1GPJcIPISKK-2jQMw8LeNAzhFQABYAQofCMSYARIDODcxGPISIJIBKKO4jQMwrLmNAzhFQAFYARIKCAEQARgBKgJETBgBIgQIARABKAQwAQ) ![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif) Tue, Apr 7 - Tue, Apr 14 SEA Seattle STL St. Louis CA $243 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:STL,departure:07/04/2026TANYT&leg2=from:STL,to:SEA,departure:14/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:242.20&airProductToken=AQoiCiAIyIIBEgQ2OTM5GJIBIPJcKL7giQMwq-KJAzhVQABYAQoiCiAIyIIBEgQ3MTI2GPJcIJIBKKKtigMws6-KAzhVQABYARIKCAEQARgBKgJIQRgBIgQIARABKAQwAQ) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Apr 11 - Tue, Apr 14 SEA Seattle STL St. Louis CA $243 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:STL,departure:11/04/2026TANYT&leg2=from:STL,to:SEA,departure:14/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:242.40&airProductToken=AQovCi0IwaYBEgM2MTUYkgEg8lwovo2KAzCrj4oDOFhAAFgBagJTVnIIT0gyT1hVQk4KLwotCMGmARIDNDczGPJcIJIBKJCpigMwo6uKAzhYQABYAWoCU1ZyCE9IMk9YVUJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sun, Apr 12 - Wed, Apr 15 SEA Seattle STL St. Louis CA $264 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:STL,departure:12/04/2026TANYT&leg2=from:STL,to:SEA,departure:15/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:264.00&airProductToken=AQpmCjEIwYIBEgQyNzY4GJIBIK4cKLmXigMwwJmKAzhCQABYAWoFQkFTSUNyCFFWQVpaTkJWCjEIwYIBEgQyOTU2GK4cIPJcKPKZigMwvpqKAzhCQAFYAWoFQkFTSUNyCFFWQVpaTkJWCmYKMQjBggESBDQxMzUY8lwgrhwoorWKAzD6tYoDOEJAAFgBagVCQVNJQ3IIT1ZBSVhTQlYKMQjBggESBDI3NjgYrhwgkgEozbaKAzDnuIoDOEJAAVgBagVCQVNJQ3IIT1ZBSVhTQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Mar 25 - Tue, Apr 7 YVR Vancouver STL St. Louis CA $352 Roundtrip found 8 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:25/03/2026TANYT&leg2=from:STL,to:YVR,departure:07/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:351.05&airProductToken=AQpFCiEI1YIBEgQyMDg1GLiNASCDaSiGzYgDMLjOiAM4TkAAWAEKIAjVggESBDQ3NDgYg2kg8lwo7M6IAzDyz4gDOE5AAVgBCkUKIAjVggESBDE0MTUY8lwgg2kootuJAzC73IkDOE5AAFgBCiEI1YIBEgQxMDg2GINpILiNASiT34kDMM7giQM4TkABWAESCggBEAEYASoCVUEYASIECAEQASgEMAE) ## Find the cheapest month to fly from Columbus (CMH) to St. Louis (STL) ### October is typically the cheapest month to fly From CA $193 - CA $632 per traveller. ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.ca/deals?rfrr=FTG_SPRING_PROMO_) ## Book with confidence Expedia.ca gives you the best tools to secure great deals on flights to Byrnes Mill. 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 Byrnes Mill. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Byrnes Mill. 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 Byrnes Mill 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 Byrnes Mill. Looking to save even more? Get additional savings by bundling your Byrnes Mill 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 Byrnes Mill 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 Byrnes Mill Prices were available within the past 7 days and start at CA $121 for one-way flights and CA $242 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, Apr 1 - Sun, Apr 5 YYZ Toronto STL St. Louis CA $278 Roundtrip found 2 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YYZ,to:STL,departure:01/04/2026TANYT&leg2=from:STL,to:YYZ,departure:05/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:277.64&airProductToken=AQpnCjIIwYIBEgQzNTI0GJjOASCuHCj4lYkDMP-WiQM4QkAAWAFqBUJBU0lDcghPVkFDWlNCVgoxCMGCARIEMjMwNBiuHCDyXCi0mYkDMP-ZiQM4QkABWAFqBUJBU0lDcghPVkFDWlNCVgpnCjEIwYIBEgQzNTYyGPJcIK4cKKzEiQMwh8WJAzhCQABYAWoFQkFTSUNyCE9WQUNaU0JWCjIIwYIBEgQzNjEwGK4cIJjOASjLx4kDMLDIiQM4QkABWAFqBUJBU0lDcghPVkFDWlNCVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) \*Available to Expedia members.