Title: Cheap Flights to Lake St Louis , MO from CA $137 - 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 Lake St Louis , MO from CA $137 [View CA $137 flight on Mon, Nov 24, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:DTW,to:STL,departure:24/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:136.70&airProductToken=AQpnCjIIwYIBEgQ2MzcyGOO0ASCuHCjh9v0CMLj3_QI4QkAAWAFqBUJBU0lDcghPN0FXWlNCWgoxCMGCARIEMzc2NBiuHCDyXCjC-v0CMJj7_QI4QkABWAFqBUJBU0lDcghPN0FXWlNCWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) - [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 - ![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:Lake St Louis, Missouri, United States of America,departure:23/11/2025TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:30/11/2025TANYT&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:Lake St Louis, Missouri, United States of America,departure:23/11/2025TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:30/11/2025TANYT&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:Lake St Louis, Missouri, United States of America,departure:23/11/2025TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:30/11/2025TANYT&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:Lake St Louis, Missouri, United States of America,departure:23/11/2025TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:30/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![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:Lake St Louis, Missouri, United States of America,departure:23/11/2025TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:30/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![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:Lake St Louis, Missouri, United States of America,departure:23/11/2025TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:30/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![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:Lake St Louis, Missouri, United States of America,departure:23/11/2025TANYT&leg2=from:Lake St Louis, Missouri, United States of America,to:CMH,departure:30/11/2025TANYT&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 Lake St Louis? Prices were available within the past 7 days and start at CA $137 for one-way flights and CA $311 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, Dec 3 - Wed, Dec 10 DTW Detroit STL St. Louis CA $311 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:03/12/2025TANYT&leg2=from:STL,to:DTW,departure:10/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:310.80&airProductToken=AQpnCjIIwYIBEgQ2MzcyGOO0ASCuHCj32_4CMNbc_gI4QkAAWAFqBUJBU0lDcghPVkFJS1NCWAoxCMGCARIENjMzMhiuHCDyXCjI3v4CMKTf_gI4QkABWAFqBUJBU0lDcghPVkFJS1NCWApnCjEIwYIBEgQ0NjMzGPJcIK4cKLmq_wIwk6v_AjhCQABYAWoFQkFTSUNyCE9WQUlLU0JYCjIIwYIBEgQzNDI4GK4cIOO0ASihrf8CMP6t_wI4QkABWAFqBUJBU0lDcghPVkFJS1NCWBIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Dec 6 - Sat, Dec 13 DTW Detroit STL St. Louis CA $320 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:06/12/2025TANYT&leg2=from:STL,to:DTW,departure:13/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:319.73&airProductToken=AQpnCjII1YIBEgQ1MzUzGOO0ASCuHCiJ_v4CMO3-_gI4S0AAWAFqBTJfZWNvcghLQUcySktEUwoxCNWCARIENDYxMxiuHCDyXCjC__4CMJ2A_wI4S0AAWAFqBTJfZWNvcghLQUcySktEUxIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAs) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Dec 2 - Wed, Dec 3 YVR Vancouver STL St. Louis CA $415 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:02/12/2025TANYT&leg2=from:STL,to:YVR,departure:03/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:414.86&airProductToken=AQpFCiEIxJgBEgQyNDgzGLiNASDMfCjd1P4CMKzW_gI4RUAAWAEKIAjEmAESBDE2MDkYzHwg8lwop9j-AjCJ2f4COEVAAVgBCkUKIAjEmAESBDE1OTcY8lwgzHwokNz-AjD03P4COEVAAFgBCiEIxJgBEgQyNDgyGMx8ILiNASjE3f4CMLff_gI4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Jan 13 - Sat, Jan 17 YVR Vancouver STL St. Louis CA $417 Roundtrip found 9 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:13/01/2026TANYT&leg2=from:STL,to:YVR,departure:17/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:416.02&airProductToken=AQpECiEIwaYBEgQzMDA4GLiNASCSASioqoIDMPOqggM4WEAAWAEKHwjBpgESAzYxOBiSASDyXCibq4IDMIqtggM4WEABWAEKRAofCMGmARIDMzg4GPJcIJIBKJPcggMwpt6CAzhYQABYAQohCMGmARIEMzAwNRiSASC4jQEoqd-CAzDq34IDOFhAAVgBEgoIARABGAEqAkFTGAEiBAgBEAEoBDAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Thu, Nov 27 - Wed, Dec 3 YOW Ottawa STL St. Louis CA $431 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:STL,departure:27/11/2025TANYT&leg2=from:STL,to:YOW,departure:03/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:430.57&airProductToken=AQpGCiEIwYYBEgM0NDcY2LMBIJjOASiYmv4CMOia_gI4R0AAWAEKIQjBhgESBDg5NjkYmM4BIPJcKPSb_gIwiZ3-AjhHQAFYAQpGCiEIwYYBEgQ4OTcwGPJcIJjOASjt4P4CMObh_gI4R0AAWAEKIQjBhgESAzQ3MBiYzgEg2LMBKJTj_gIw2OP-AjhHQAFYARIKCAEQARgBKgJBQxgBIgQIARABKAgoBDAB) ## 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. ## Frequently asked questions ### What is the name of Lake St Louis' airport? > Lambert-St. Louis Intl. Airport (STL) is the main airport that serves Lake St Louis. ### How far is Lambert-St. Louis Intl. Airport (STL) from central Lake St Louis? > STL is 40 kilometres from downtown Lake St Louis, so prepare yourself for a bit of a commute into the city centre. ### What airport is best to fly into Lake St Louis? > Make your way through the exit doors of Lambert-St. Louis Intl. Airport (STL) and your Lake St Louis getaway will have begun! The city's main airport, it's located 40 kilometres from the downtown streets. ### How many airlines fly to Lake St Louis? > Lake St Louis is serviced by 12 air carriers from at least 61 worldwide airports. ### Which airlines fly to Lake St Louis? > United Airlines and American Airlines fly frequently into Lake St Louis. Catching a United Airlines flight from Chicago is one of the most preferred ways to get there. ### How many nonstop flights are there to Lake St Louis? > Flying to a new place is much more straightforward when there aren't any annoying stopovers. If you're off to Lake St Louis, the good news is that there are roughly 1,206 direct flights operating every week. ### Where are the most popular flights to Lake St Louis departing from? > The most popular flights to Lake St Louis set off from Chicago, Dallas and New York airports. ### How long is the flight to Lake St Louis Airport? > If it's Chicago you're departing, you'll be midair for around 1 hour and 22 minutes before you touchdown in Lake St Louis. Terminal to terminal from Dallas generally takes 1 hour and 43 minutes and from New York, it's 3 hours and 1 minute. ### How to book the cheapest flight to Lake St Louis? > Don't leave booking your flight to Lake St Louis until the last possible moment. That's one trick seasoned travellers use to get the best prices. Booking well in advance means more choices and more affordable flights. Another fantastic way to nab the most competitive fare is to compare all options. If your destination has a few airports, don't forget to look into the cost of flying into a less busy terminal. Lastly, be prepared to book quickly if you stumble on a great price. It might not stick around for long. With a bit of knowledge and a little good fortune, the perfect airfare can be yours. ### Do you have any tips for my flight to Lake St Louis? > We've got the lowdown on how to make your flight a stress-free experience. Follow our tips and you'll be cruising through the airport and enjoying Lake St Louis before you know it. What to pack in your hand luggage: > > > > - 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? > The answer is simple — be prepared. We've rounded up some top tips for an easy trip through airport security. Watch out Lake St Louis, here you come: > > > > - 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. ## Book with confidence 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! ## Travel information | Destination airport | Lambert-St. Louis Intl. | | --- | --- | | Destination airport IATA code | STL | | Destination city name | St. Louis | | Roundtrip price | CA $311 | ## Trending flights to Lake St Louis Prices were available within the past 7 days and start at CA $137 for one-way flights and CA $311 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) Sat, Feb 7 - Sun, Feb 8 YYZ Toronto STL St. Louis CA $368 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YYZ,to:STL,departure:07/02/2026TANYT&leg2=from:STL,to:YYZ,departure:08/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:367.13&airProductToken=AQpnCjIIwYIBEgQzNjA0GJjOASCuHCjexIQDMNHFhAM4QkAAWAFqBUJBU0lDcghPVkFDWlNCWAoxCMGCARIENjMxNBiuHCDyXCjSx4QDMK3IhAM4QkABWAFqBUJBU0lDcghPVkFJWlNCWApnCjEIwYIBEgQ2MzQyGPJcIK4cKKHQhAMw-tCEAzhCQABYAWoFQkFTSUNyCE9WQUlaU0JYCjIIwYIBEgQzNDU2GK4cIJjOASjf04QDMM_UhAM4QkABWAFqBUJBU0lDcghPVkFDWlNCWBIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) \*Available to Expedia members.