Title: Cheap Flights to St. Louis - Expedia.ca ![Les pirogues! Colorfully painted, these serve the fishermen well as they capture their fish, for sale at the market or for their own table at home. #culture October 2018](https://images.trvl-media.com/place/3859/7b61c9e1-7454-4e9a-86b6-c36d2737074a.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Samantha B. ![](https://images.trvl-media.com/place/3859/7b61c9e1-7454-4e9a-86b6-c36d2737074a.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to St. Louis - [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 [Hotels in St. Louis](https://expedia.ca/St-Louis-Hotels.d3859.Travel-Guide-Hotels)[St. Louis Car Rentals](https://expedia.ca/Car-Rentals-In-St-Louis.d3859.Car-Rental-Guide)[St. Louis Vacation Packages](https://expedia.ca/St-Louis.d3859.Destination-Travel-Guides) ## Popular airlines to St. Louis - ![](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. Louis, Saint-Louis Region, Senegal,departure:23/02/2026TANYT&leg2=from:St. Louis, Saint-Louis Region, Senegal,to:CMH,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Saint-Louis Region, Senegal,departure:23/02/2026TANYT&leg2=from:St. Louis, Saint-Louis Region, Senegal,to:CMH,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Saint-Louis Region, Senegal,departure:23/02/2026TANYT&leg2=from:St. Louis, Saint-Louis Region, Senegal,to:CMH,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![](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. Louis, Saint-Louis Region, Senegal,departure:23/02/2026TANYT&leg2=from:St. Louis, Saint-Louis Region, Senegal,to:CMH,departure:02/03/2026TANYT&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_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Saint-Louis Region, Senegal,departure:23/02/2026TANYT&leg2=from:St. Louis, Saint-Louis Region, Senegal,to:CMH,departure:02/03/2026TANYT&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_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Saint-Louis Region, Senegal,departure:23/02/2026TANYT&leg2=from:St. Louis, Saint-Louis Region, Senegal,to:CMH,departure:02/03/2026TANYT&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_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:St. Louis, Saint-Louis Region, Senegal,departure:23/02/2026TANYT&leg2=from:St. Louis, Saint-Louis Region, Senegal,to:CMH,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) - ![](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) Expedia.ca gives you the best tools to secure great deals on flights to 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 St. Louis. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to 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 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 St. Louis. Looking to save even more? Get additional savings by bundling your 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 St. Louis trip! ## Frequently asked questions ### What is the name of St. Louis' airport? ### How many airlines fly to St. Louis? ### Which airlines fly to St. Louis? ### How many nonstop flights are there to St. Louis? ### Where are the most popular flights to St. Louis departing from? ### How long is the flight to St. Louis Airport? ### How to book the cheapest flight to St. Louis? ### Do you have any tips for my flight to St. Louis? > - A plane ride can be a great experience if you take the right stuff. Firstly, you'll want some basic toiletries, such as deodorant, toothpaste and a toothbrush, a spare pair of socks and a good novel. Next, find a spot in your hand luggage for your electronic gadgets, chargers, any daily medications and perhaps a cozy neck pillow too. Lastly, remember to take your passport, travel documents and your bank cards. > > > Do not pack the following items in your hand luggage: > > > - While the list of prohibited items can differ between airlines, the general rule to follow is avoid carrying anything sharp, flammable or explosive. This includes screwdrivers, blades, aerosol cans and bleaching agents. Sports equipment like bows and arrows, and objects that could harm passengers, such as pepper spray and guns, are also banned from the cabin. > > > What to wear on a flight: > > > - Comfort should be your main concern when deciding what to wear on board. Loose, breathable clothing is a smart choice, as are enclosed shoes like sneakers. > - Deep vein thrombosis (DVT) is a risk on long-distance flights. It results from blood clots forming due to inactivity and poor circulation, so do some gentle leg and foot exercises in your seat and consider wearing compression tights or socks. ### How to get through airport security fast when flying to St. Louis? > - Be sure to keep your boarding pass and ID easily accessible. They'll be the first things you'll be asked to show at security. > - After that, both you and your carry-on bag will be X-rayed. To make the process quick and painless, remove anything that might trigger the alarms. Personal belongings like your belt, coat and earphones need to go through the machine. > - Your electronic devices like laptops and phones will also need to go on a tray to be scanned. No need to worry though, you'll be back online soon enough. > - Any liquids or gels, such as hair oil or hand cream, that you want to take on board need to be in containers no larger than 3.4 ounces (100 millilitres). Also, they all must fit inside a quart-size (one litre), clear zip-close bag. > - Lightweight sneakers are a clever footwear choice as you're less likely to have to remove them when passing through security. Safety boots and heavier-style shoes are often subjected to additional screening. > - Airlines will not allow any sharp objects in your carry-on baggage. If you need to bring these kinds of items, put them in your checked luggage. __Flights to St. Louis information__ | Destination airport | Pierre Elliott Trudeau Intl. | | ----------------------------- | ---------------------------- | | Destination airport IATA code | YUL | | Destination city name | Montreal | | Roundtrip price | CA $551 | \*Available to Expedia members.