Title: Cheap Flights to St Mary , MO from CA $217 - 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 St Mary , MO from CA $217 [View CA $217 flight on Sat, May 2, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:YVR,to:STL,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:216.89&airProductToken=AQpECiAI1YIBEgM2NDAYuI0BIINpKKf1iwMw2faLAzhOQABYAQogCNWCARIEMTI5MxiDaSDyXCiG-YsDMIf6iwM4TkABWAESCggBEAEYASoCVUEYASIECAEQASgEMAE) [Hotels in St Mary](https://expedia.ca/St-Mary-Hotels.d3000445480.Travel-Guide-Hotels)[St Mary Car Rentals](https://expedia.ca/Car-Rentals-In-St-Mary.d3000445480.Car-Rental-Guide)[St Mary Vacation Packages](https://expedia.ca/St-Mary.d3000445480.Destination-Travel-Guides) ## Popular airlines to St Mary - ![](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 Mary, Missouri, United States of America,departure:19/03/2026TANYT&leg2=from:St Mary, Missouri, United States of America,to:CMH,departure:26/03/2026TANYT&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:St Mary, Missouri, United States of America,departure:19/03/2026TANYT&leg2=from:St Mary, Missouri, United States of America,to:CMH,departure:26/03/2026TANYT&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:St Mary, Missouri, United States of America,departure:19/03/2026TANYT&leg2=from:St Mary, Missouri, United States of America,to:CMH,departure:26/03/2026TANYT&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_WN.svg) Southwest Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St Mary, Missouri, United States of America,departure:19/03/2026TANYT&leg2=from:St Mary, Missouri, United States of America,to:CMH,departure:26/03/2026TANYT&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_F9.svg) Frontier Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St Mary, Missouri, United States of America,departure:19/03/2026TANYT&leg2=from:St Mary, Missouri, United States of America,to:CMH,departure:26/03/2026TANYT&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_AS.svg) Alaska Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St Mary, Missouri, United States of America,departure:19/03/2026TANYT&leg2=from:St Mary, Missouri, United States of America,to:CMH,departure:26/03/2026TANYT&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:St Mary, Missouri, United States of America,departure:19/03/2026TANYT&leg2=from:St Mary, Missouri, United States of America,to:CMH,departure:26/03/2026TANYT&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 St Mary? Prices were available within the past 7 days and start at CA $217 for one-way flights and CA $355 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Sun, May 3 - Mon, May 4 YVR Vancouver STL St. Louis CA $355 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:03/05/2026TANYT&leg2=from:STL,to:YVR,departure:04/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:354.66&airProductToken=AQpGCiEIwYYBEgMxODIYuI0BIJjOASiZ_YsDMK__iwM4R0AAWAEKIQjBhgESBDE1NzcYmM4BIPJcKKSAjAMwooGMAzhHQAFYAQpFCiAI1YIBEgQxNzcwGPJcIINpKKOPjAMwvZCMAzhOQABYAQohCNWCARIEMTkxMBiDaSC4jQEoiZGMAzDEkowDOE5AAVgBEgoIARABGAEqAkFDGAEiBAgBEAEoCCgEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Apr 18 - Thu, Apr 23 YVR Vancouver STL St. Louis CA $362 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:18/04/2026TANYT&leg2=from:STL,to:YVR,departure:23/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:361.54&airProductToken=AQpFCiEIxJgBEgQzNzEwGLiNASDyEij_2YoDMI_bigM4RUAAWAEKIAjEmAESBDI2NjYY8hIg8lwo0duKAzD33IoDOEVAAVgBCkUKIAjEmAESBDE1OTcY8lwgzHwoiI6LAzDnjosDOEVAAFgBCiEIxJgBEgQyNDgyGMx8ILiNASiqj4sDMI6RiwM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Thu, Apr 9 - Tue, Apr 28 YVR Vancouver STL St. Louis CA $363 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:09/04/2026TANYT&leg2=from:STL,to:YVR,departure:28/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:362.60&airProductToken=AQptCjUI1YIBEgQyNDcwGLiNASCuHCi89IkDMMz4iQM4TkAAWAFqCEVDT0JBU0lDcghHTkE0QTJCTgo0CNWCARIENTU3MRiuHCDyXCiQ_IkDMOX8iQM4TkABWAFqCEVDT0JBU0lDcghHTkE0QTJCTgpoCjIIwYYBEgQ4ODkwGPJcIJjOASjxyosDMObLiwM4R0AAWAFqBUJBU0lDcghHTkE0QTJCQQoyCMGGARIDMTI1GJjOASC4jQEo18yLAzD2zosDOEdAAVgBagVCQVNJQ3IIR05BNEEyQkESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, Apr 16 - Wed, Apr 22 YVR Vancouver STL St. Louis CA $384 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:16/04/2026TANYT&leg2=from:STL,to:YVR,departure:22/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:383.62&airProductToken=AQpgCi8IwaYBEgQyMDM0GLiNASCSASjdw4oDMJ3EigM4WEAAWAFqAlNWcghHSDRPQUpCTgotCMGmARIDNjE1GJIBIPJcKN7FigMwy8eKAzhYQAFYAWoCU1ZyCEdINE9BSkJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Mon, May 4 - Tue, May 5 YUL Montreal STL St. Louis CA $392 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:STL,departure:04/05/2026TANYT&leg2=from:STL,to:YUL,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:391.53&airProductToken=AQpmCjEIwYIBEgQzNjAwGJhdIK4cKJ6MjAMwvo2MAzhCQABYAWoFQkFTSUNyCE9VQUNaU0JYCjEIwYIBEgQyMTI2GK4cIPJcKNGQjAMwpZGMAzhCQAFYAWoFQkFTSUNyCE9WQUlZU0JYCpsBCjEIwYIBEgQyNDQ0GPJcIK4cKLWVjAMwkJaMAzhCQABYAWoFQkFTSUNyCE9WQUlLU0JYCjIIwYIBEgQxNTIyGK4cIOKaASjZmIwDMNyZjAM4QkABWAFqBUJBU0lDcghPVUFDWlNCWAoyCMGCARIENTEzNxjimgEgmF0omZuMAzCynIwDOEJAAVgBagVCQVNJQ3IIT1VBQ1pTQlgSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ## 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_) ## Frequently asked questions ### What is the name of St Mary's airport? ### How many airlines fly to St Mary? ### Which airlines fly to St Mary? ### How many nonstop flights are there to St Mary? ### Where are the most popular flights to St Mary departing from? ### How long is the flight to St Mary Airport? ### How to book the cheapest flight to St Mary? ### Do you have any tips for my flight to St Mary? > - First and foremost, pack your passport, travel documents, credit cards and medications. Next, you'll need some extra in-flight entertainment to while away the time. A thrilling novel and a phone crammed with your favourite movies are some fantastic options. If you plan to catch more than just forty winks, a quality neck pillow and some noise-cancelling headphones will also be useful. Finally, leave some space for a toothbrush and some cleansing wipes so you'll arrive feeling fresh and raring to go. > > > Do not pack the following items in your hand luggage: > > > - Check carefully that you don't have a Swiss Army knife lurking in one of the compartments of your hand luggage. Other prohibited items include flammable or explosive goods, such as fuel and matches, and gels and liquids in containers with a volume of more than 3.4 ounces (100 millilitres). > > > What to wear on a flight: > > > - Your main aim is to be as comfortable as you can. Opt for shoes that are easy to pull on and off, dress in loose, natural-fibre clothing and don't forget to take a sweater in case you get chilly in the cabin. > - Deep vein thrombosis (DVT), a blood clotting condition caused by prolonged inactivity, can be a risk on long-haul flights. Walk around the cabin and give your legs a stretch or do some gentle exercises in your seat to improve your circulation. ### How to get through airport security fast when flying to St Mary? > - Be sure to have your passport and travel documents within easy reach. They're the first items you'll be asked to show at security. > - Next up is the X-ray machine. Empty your pockets and remove anything that is likely to set off the alarm. This includes things like earphones or headphones, as well as heavy coats or jackets. They'll all need to go on the X-ray conveyor belt. > - For just a few moments, you'll have to unplug from technology. Your phone, tablet and any other electronic gadgets will need to go through the scanner. > - Travelling with your favourite perfume or cologne? No problem. As long as the volume is no greater than 3.4 ounces (100 millilitres) and it's stored in a clear zip-lock bag, you're permitted to bring it with you in your carry-on baggage. > - There's a chance you'll be required to take your shoes off for scanning, so wearing slip-on sneakers is always a good idea. > - Pocket knives and other sharp items can't be taken on board. They'll be seized at security, so put them in your checked suitcase. ## Book with confidence Expedia.ca gives you the best tools to secure great deals on flights to St Mary. 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 Mary. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to St Mary. 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 Mary 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 Mary. Looking to save even more? Get additional savings by bundling your St Mary 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 Mary trip! ## Travel information | Destination airport | Lambert-St. Louis Intl. | | ----------------------------- | ----------------------- | | Destination airport IATA code | STL | | Destination city name | St. Louis | | Roundtrip price | CA $214 | ## Trending flights to St Mary Prices were available within the past 7 days and start at CA $217 for one-way flights and CA $355 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Sun, May 3 - Mon, May 4 YVR Vancouver STL St. Louis CA $355 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:03/05/2026TANYT&leg2=from:STL,to:YVR,departure:04/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:354.66&airProductToken=AQpGCiEIwYYBEgMxODIYuI0BIJjOASiZ_YsDMK__iwM4R0AAWAEKIQjBhgESBDE1NzcYmM4BIPJcKKSAjAMwooGMAzhHQAFYAQpFCiAI1YIBEgQxNzcwGPJcIINpKKOPjAMwvZCMAzhOQABYAQohCNWCARIEMTkxMBiDaSC4jQEoiZGMAzDEkowDOE5AAVgBEgoIARABGAEqAkFDGAEiBAgBEAEoCCgEMAE) \*Available to Expedia members.