Title: Cheap Flights to Lake St Louis , MO from CA $146 - Expedia.ca ![The Arch in St. Louis](https://images.trvl-media.com/place/183477/afc6fa4e-344e-48ef-a2d0-a1cdfadea28d.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/183477/afc6fa4e-344e-48ef-a2d0-a1cdfadea28d.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to Lake St Louis , MO from CA $146 [View CA $146 flight on Tue, Apr 7, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:DTW,to:STL,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:146.00&airProductToken=AQppCjMIwYIBEgQyMDUwGOO0ASDimgEo4tyJAzDX3YkDOEJAAFgBagVCQVNJQ3IIT1ZBSUtTQlYKMgjBggESBDI5NDMY4poBIPJcKI7eiQMwi9-JAzhCQAFYAWoFQkFTSUNyCE9WQUlLU0JWEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) - [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 [Lake St Louis Travel Guide](https://expedia.ca/Lake-St-Louis.dx183477)[Hotels in Lake St Louis](https://expedia.ca/Lake-St-Louis-Hotels.d183477.Travel-Guide-Hotels)[Lake St Louis Car Rentals](https://expedia.ca/Car-Rentals-In-Lake-St-Louis.d183477.Car-Rental-Guide)[Lake St Louis Vacation Packages](https://expedia.ca/Lake-St-Louis.d183477.Destination-Travel-Guides) ## Popular airlines to Lake St Louis - ![](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:Lake St Louis, Missouri, United States of America,departure:22/02/2026TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:01/03/2026TANYT&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:Lake St Louis, Missouri, United States of America,departure:22/02/2026TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:01/03/2026TANYT&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:Lake St Louis, Missouri, United States of America,departure:22/02/2026TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:01/03/2026TANYT&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:Lake St Louis, Missouri, United States of America,departure:22/02/2026TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:01/03/2026TANYT&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:Lake St Louis, Missouri, United States of America,departure:22/02/2026TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:01/03/2026TANYT&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:Lake St Louis, Missouri, United States of America,departure:22/02/2026TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:01/03/2026TANYT&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:Lake St Louis, Missouri, United States of America,departure:22/02/2026TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:01/03/2026TANYT&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 Lake St Louis? Prices were available within the past 7 days and start at CA $146 for one-way flights and CA $298 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) Wed, Mar 11 - Sat, Mar 28 DTW Detroit STL St. Louis CA $298 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:11/03/2026TANYT&leg2=from:STL,to:DTW,departure:28/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:297.40&airProductToken=AQpFCiEI1YIBEgQ1NTIzGOO0ASCuHCjkq4cDML6shwM4S0AAWAEKIAjVggESBDU1MDgYrhwg8lwow62HAzCerocDOEtAAVgBCkUKIAjVggESBDQ1MzcY8lwgrhwo-OiIAzDS6YgDOEtAAFgBCiEI1YIBEgQ1NzE3GK4cIOO0ASiA6ogDMNrqiAM4S0ABWAESCggBEAEYASoCVUEYASIECAEQASgEMAE) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Fri, Apr 24 - Mon, Apr 27 DTW Detroit STL St. Louis CA $321 Roundtrip found 14 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:24/04/2026TANYT&leg2=from:STL,to:DTW,departure:27/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:321.00&airProductToken=AQpnCjIIwYIBEgQxMjU5GOO0ASCuHCjYmIsDMKyZiwM4QkAAWAFqBUJBU0lDcghPVkFJWVNCVgoxCMGCARIEMzg3MBiuHCDyXCjPmYsDMKSaiwM4QkABWAFqBUJBU0lDcghPVkFJWVNCVgpmCjAIwYIBEgM0MTgY8lwgrhwoncCLAzD7wIsDOEJAAFgBagVCQVNJQ3IIT1ZBSVlTQlYKMgjBggESBDMxMTAYrhwg47QBKL7CiwMwnMOLAzhCQAFYAWoFQkFTSUNyCE9WQUlZU0JWEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Apr 24 - Mon, Apr 27 DTW Detroit STL St. Louis CA $380 Roundtrip found 14 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:24/04/2026TANYT&leg2=from:STL,to:DTW,departure:27/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:379.28&airProductToken=AQo4CjYIxJgBEgQxNTQxGOO0ASDyXCign4sDMIagiwM4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWU0E2QkMSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, Apr 17 - Tue, Apr 21 YVR Vancouver STL St. Louis CA $422 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:17/04/2026TANYT&leg2=from:STL,to:YVR,departure:21/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:421.69&airProductToken=AQpECiEIwaYBEgQyNDgyGLiNASCSASj80IoDMLvRigM4WEAAWAEKHwjBpgESAzM4OBiSASDyXCiY2IoDMIjaigM4WEABWAEKRAofCMGmARIDMzg4GPJcIJIBKIL8igMwk_6KAzhYQABYAQohCMGmARIEMjA0MRiSASC4jQEo6_6KAzCm_4oDOFhAAVgBEgoIARABGAEqAkFTGAEiBAgBEAEoBDAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Wed, May 6 - Wed, May 27 YOW Ottawa STL St. Louis CA $433 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:STL,departure:06/05/2026TANYT&leg2=from:STL,to:YOW,departure:27/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:432.43&airProductToken=AQpFCiEIwYYBEgQ4MDA4GNizASCYXSjRo4wDMIKkjAM4R0AAWAEKIAjBhgESBDE1NjUYmF0g8lwosqWMAzDhpowDOEdAAVgBCkUKIAjVggESBDQ0MjMY8lwgrhwojo2OAzDwjY4DOE5AAFgBCiEI1YIBEgQzNjYxGK4cINizASjbjo4DMOWPjgM4TkABWAESCggBEAEYASoCQUMYASIECAEQASgIKAQwAQ) ## 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. Expedia.ca gives you the best tools to secure great deals on flights to Lake 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 Lake St Louis. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Lake 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 Lake 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 Lake St Louis. Looking to save even more? Get additional savings by bundling your Lake 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 Lake St Louis trip! ## Frequently asked questions ### What is the name of Lake St Louis' airport? ### How far is Lambert-St. Louis Intl. Airport (STL) from central Lake St Louis? ### What airport is best to fly into Lake St Louis? ### How many airlines fly to Lake St Louis? ### Which airlines fly to Lake St Louis? ### How many nonstop flights are there to Lake St Louis? ### Where are the most popular flights to Lake St Louis departing from? ### How long is the flight to Lake St Louis Airport? ### How to book the cheapest flight to Lake St Louis? ### Do you have any tips for my flight to Lake St Louis? > - The trick to having a great travel experience is to pack in advance. First up, the essentials: passport, boarding pass, bank cards and daily medications. Next, bring items that'll help keep you occupied, like some electronic devices or a good read. It's also smart to bring your chargers, a quality neck pillow and a pair of noise-cancelling headphones. Last but not least, don't forget to squeeze in toiletries like a toothbrush, deodorant and a clean set of clothes. > > > Do not pack the following items in your hand luggage: > > > - Leave all your full-sized bottles of hair gel and hairspray in your checked luggage. Any liquids or gels in your carry-on bag larger than 3.4 ounces (100 millilitres) will be confiscated. Sharp objects, like your beloved Swiss Army knife, and dangerous goods which are explosive or flammable, such as spray paint, flares and strong acids, are also restricted. > > > What to wear on a flight: > > > - The aisles of an airplane are no place for a fashion parade. Wear layers and opt for shoes that are flat, roomy and easy to pull on and off. > - Deep vein thrombosis (DVT), a blood clot condition caused by prolonged inactivity, can be a risk on long-haul flights. Try to walk around the cabin and stretch your legs or do some simple exercises in your seat to promote better circulation. ### How to get through airport security fast when flying to Lake St Louis? > - Keep your travel documents and passport within easy reach. They'll be the first things you'll be asked to present to airport security. > - Next up, both you and your carry-on luggage will be X-rayed. To make the process quick and painless, remove anything that is likely to trigger the alarm. Items such as your belt, coat and earphones will be required to go through the machine. > - All your electronic devices, including your laptop and phone, must also be scanned separately. > - Remove all gels and liquids from your carry-on bag. They often need to be sent through the X-ray machine separately. Each item should be in a container no larger than 3.4 ounces (100 millilitres) and everything must fit in a quart-size (one litre), clear zip-close bag. > - The right choice of footwear can save you several minutes. Hiking boots are often required to be removed and X-rayed separately. Slip-on sneakers usually aren't. > - Airlines won't allow any pocket knives or other sharp items in the cabin. If you must bring these kinds of items, put them in your checked baggage. __Flights to Lake St Louis information__ | Destination airport | Lambert-St. Louis Intl. | | ----------------------------- | ----------------------- | | Destination airport IATA code | STL | | Destination city name | St. Louis | | Roundtrip price | CA $297 | ## Trending flights to Lake St Louis Prices were available within the past 7 days and start at CA $146 for one-way flights and CA $298 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, Apr 18 - Sat, Apr 18 YVR Vancouver STL St. Louis CA $354 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:18/04/2026TANYT&leg2=from:STL,to:YVR,departure:18/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:353.89&airProductToken=AQpvCjYIxJgBEgQzNzIwGLiNASDyEijv1ooDMITYigM4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWU0gzQkMKNQjEmAESBDI0NTUY8hIg8lwot9iKAzDc2YoDOEVAAVgBaglNQUlOQkFTSUNyCFZBVlNIM0JDCm8KNQjEmAESBDE0OTIY8lwg8hIo6NqKAzCu3IoDOEVAAFgBaglNQUlOQkFTSUNyCFZBVlNIM0JDCjYIxJgBEgQzNzE5GPISILiNASiU3YoDMKveigM4RUABWAFqCU1BSU5CQVNJQ3IIVkFWU0gzQkMSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) \*Available to Expedia members.