Title: Cheap Flights to Weldon Spring , MO from CA $172 - Expedia.ca ![Lodging Image](https://a.travel-assets.com/travel-assets-manager/bex-affinities/lodging.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://a.travel-assets.com/travel-assets-manager/bex-affinities/lodging.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to Weldon Spring , MO from CA $172 [View CA $172 flight on Mon, Apr 20, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:SEA,to:STL,departure:20/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:171.20&airProductToken=AQpvCjUIxJgBEgM4MTAYkgEg47QBKJb1igMwlveKAzhFQABYAWoJTUFJTkJBU0lDcghYQVZOQTBCQwo2CMSYARIEMjg2OBjjtAEg8lwoq_iKAzCS-YoDOEVAAVgBaglNQUlOQkFTSUNyCFhBVk5BMEJDEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) [Hotels in Weldon Spring](https://expedia.ca/Weldon-Spring-Hotels.d553248634983495338.Travel-Guide-Hotels)[Weldon Spring Car Rentals](https://expedia.ca/Car-Rentals-In-Weldon-Spring.d553248634983495338.Car-Rental-Guide)[Weldon Spring Vacation Packages](https://expedia.ca/Weldon-Spring.d553248634983495338.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:Weldon Spring, Missouri, United States of America,departure:18/04/2026TANYT&leg2=from:Weldon Spring, Missouri, United States of America,to:CMH,departure:25/04/2026TANYT&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:Weldon Spring, Missouri, United States of America,departure:18/04/2026TANYT&leg2=from:Weldon Spring, Missouri, United States of America,to:CMH,departure:25/04/2026TANYT&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:Weldon Spring, Missouri, United States of America,departure:18/04/2026TANYT&leg2=from:Weldon Spring, Missouri, United States of America,to:CMH,departure:25/04/2026TANYT&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_WN.svg) Southwest Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Weldon Spring, Missouri, United States of America,departure:18/04/2026TANYT&leg2=from:Weldon Spring, Missouri, United States of America,to:CMH,departure:25/04/2026TANYT&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_F9.svg) Frontier Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Weldon Spring, Missouri, United States of America,departure:18/04/2026TANYT&leg2=from:Weldon Spring, Missouri, United States of America,to:CMH,departure:25/04/2026TANYT&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_AS.svg) Alaska Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Weldon Spring, Missouri, United States of America,departure:18/04/2026TANYT&leg2=from:Weldon Spring, Missouri, United States of America,to:CMH,departure:25/04/2026TANYT&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:Weldon Spring, Missouri, United States of America,departure:18/04/2026TANYT&leg2=from:Weldon Spring, Missouri, United States of America,to:CMH,departure:25/04/2026TANYT&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 Weldon Spring? Prices were available within the past 7 days and start at CA $172 for one-way flights and CA $326 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Oct 6 - Wed, Oct 7 YVR Vancouver STL St. Louis CA $326 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:06/10/2026TANYT&leg2=from:STL,to:YVR,departure:07/10/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:325.58&airProductToken=AQpECiEI1YIBEgQyMDg1GLiNASCDaSig3pkDMNHfmQM4TkAAWAEKHwjVggESAzIxNBiDaSDyXCjl4JkDMNvhmQM4TkABWAEKIgogCNWCARIDMzYyGPJcILiNASis5JkDMLLnmQM4TkAAWAESCggBEAEYASoCVUEYASIECAEQASgEMAE) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Thu, Sep 17 - Fri, Oct 2 YVR Vancouver STL St. Louis CA $331 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:17/09/2026TANYT&leg2=from:STL,to:YVR,departure:02/10/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:330.18&airProductToken=AQpECiAIwYYBEgMzMDIYuI0BIJhdKKaFmAMw0YeYAzhHQABYAQogCMGGARIEODY4NxiYXSDyXCiniJgDMM2JmAM4R0ABWAEKIgogCNWCARIDMzYyGPJcILiNASiMrJkDMJKvmQM4TkAAWAESCggBEAEYASoCQUMYASIECAEQASgIKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Mon, Apr 20 - Fri, Apr 24 SEA Seattle STL St. Louis CA $343 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:STL,departure:20/04/2026TANYT&leg2=from:STL,to:SEA,departure:24/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:342.40&airProductToken=AQpvCjUIxJgBEgM4MTAYkgEg47QBKJb1igMwlveKAzhFQABYAWoJTUFJTkJBU0lDcghYQVZOQTBCQwo2CMSYARIEMjg2OBjjtAEg8lwoq_iKAzCS-YoDOEVAAVgBaglNQUlOQkFTSUNyCFhBVk5BMEJDEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Mon, Apr 20 - Fri, Apr 24 SEA Seattle STL St. Louis CA $345 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:STL,departure:20/04/2026TANYT&leg2=from:STL,to:SEA,departure:24/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:344.94&airProductToken=AQpnCjEIwYIBEgM3NTEYkgEg4poBKOn0igMwmPeKAzhCQABYAWoFQkFTSUNyCE5WQVpaTkJWCjIIwYIBEgQyOTUwGOKaASDyXCiY-IoDMJT5igM4QkABWAFqBUJBU0lDcghOVkFaWk5CVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Apr 21 - Sat, May 2 SEA Seattle STL St. Louis CA $384 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:STL,departure:21/04/2026TANYT&leg2=from:STL,to:SEA,departure:02/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:383.20&airProductToken=AQohCh8IwaYBEgM2MTUYkgEg8lwo_v2KAzDr_4oDOFhAAFgBCiEKHwjBpgESAzQ3MxjyXCCSASjQ84sDMOD1iwM4WEAAWAESCggBEAEYASoCQVMYASIECAEQASgEMAE) ## Book with confidence Expedia.ca gives you the best tools to secure great deals on flights to Weldon Spring. 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 Weldon Spring. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Weldon Spring. 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 Weldon Spring 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 Weldon Spring. Looking to save even more? Get additional savings by bundling your Weldon Spring 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 Weldon Spring trip! ## Travel information | Destination airport | Lambert-St. Louis Intl. | | ----------------------------- | ----------------------- | | Destination airport IATA code | STL | | Destination city name | St. Louis | | Roundtrip price | CA $326 | ## Trending flights to Weldon Spring Prices were available within the past 7 days and start at CA $172 for one-way flights and CA $326 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Oct 6 - Wed, Oct 7 YVR Vancouver STL St. Louis CA $326 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:06/10/2026TANYT&leg2=from:STL,to:YVR,departure:07/10/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:325.58&airProductToken=AQpECiEI1YIBEgQyMDg1GLiNASCDaSig3pkDMNHfmQM4TkAAWAEKHwjVggESAzIxNBiDaSDyXCjl4JkDMNvhmQM4TkABWAEKIgogCNWCARIDMzYyGPJcILiNASis5JkDMLLnmQM4TkAAWAESCggBEAEYASoCVUEYASIECAEQASgEMAE) \*Available to Expedia members.