Title: Cheap Flights to Frontenac , MO from CA $160 - Expedia.ca ![Autumn Trees](https://images.trvl-media.com/place/7960/d3708a1a-ec70-45ac-9598-a9f965653939.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/7960/d3708a1a-ec70-45ac-9598-a9f965653939.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to Frontenac , MO from CA $160 [View CA $160 flight on Thu, May 14, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:DTW,to:STL,departure:14/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:159.40&airProductToken=AQpnCjIIwYIBEgQzMzg3GOO0ASCuHCic-YwDMO_5jAM4QkAAWAFqBUJBU0lDcghPVkFJWFNCVgoxCMGCARIEMzg3MBiuHCDyXCjS-owDMKf7jAM4QkABWAFqBUJBU0lDcghPVkFJWFNCVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) [Hotels in Frontenac](https://expedia.ca/Frontenac-Hotels.d7960.Travel-Guide-Hotels)[Things to do in Frontenac](https://expedia.ca/Things-To-Do-In-Frontenac.d7960.Travel-Guide-Activities)[Frontenac Car Rentals](https://expedia.ca/Car-Rentals-In-Frontenac.d7960.Car-Rental-Guide)[Frontenac Vacation Packages](https://expedia.ca/Frontenac.d7960.Destination-Travel-Guides) ## Popular airlines to Frontenac - ![](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:Frontenac, Missouri, United States of America,departure:08/04/2026TANYT&leg2=from:Frontenac, Missouri, United States of America,to:CMH,departure:15/04/2026TANYT&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:Frontenac, Missouri, United States of America,departure:08/04/2026TANYT&leg2=from:Frontenac, Missouri, United States of America,to:CMH,departure:15/04/2026TANYT&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:Frontenac, Missouri, United States of America,departure:08/04/2026TANYT&leg2=from:Frontenac, Missouri, United States of America,to:CMH,departure:15/04/2026TANYT&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:Frontenac, Missouri, United States of America,departure:08/04/2026TANYT&leg2=from:Frontenac, Missouri, United States of America,to:CMH,departure:15/04/2026TANYT&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:Frontenac, Missouri, United States of America,departure:08/04/2026TANYT&leg2=from:Frontenac, Missouri, United States of America,to:CMH,departure:15/04/2026TANYT&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:Frontenac, Missouri, United States of America,departure:08/04/2026TANYT&leg2=from:Frontenac, Missouri, United States of America,to:CMH,departure:15/04/2026TANYT&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:Frontenac, Missouri, United States of America,departure:08/04/2026TANYT&leg2=from:Frontenac, Missouri, United States of America,to:CMH,departure:15/04/2026TANYT&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 Frontenac? Prices were available within the past 7 days and start at CA $160 for one-way flights and CA $271 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) Tue, May 12 - Tue, May 19 DTW Detroit STL St. Louis CA $271 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:12/05/2026TANYT&leg2=from:STL,to:DTW,departure:19/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:270.30&airProductToken=AQojCiEIxJgBEgQxMzcxGOO0ASDyXCif5owDMILnjAM4RUAAWAEKIwohCMSYARIEMjg2OBjyXCDjtAEot7SNAzCStY0DOEVAAFgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Apr 14 - Mon, Apr 20 DTW Detroit STL St. Louis CA $309 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:14/04/2026TANYT&leg2=from:STL,to:DTW,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:308.10&airProductToken=AQppCjMIwYIBEgQyMDUwGOO0ASDimgEowquKAzC3rIoDOEJAAFgBagVCQVNJQ3IIT1ZBSUtTQlYKMgjBggESBDI0NzcY4poBIPJcKIKuigMw_q6KAzhCQAFYAWoFQkFTSUNyCE9WQUlLU0JWCmYKMAjBggESAzQxOBjyXCCuHCi98YoDMJvyigM4QkAAWAFqBUJBU0lDcghPVkFJWFNCVgoyCMGCARIEMzExMBiuHCDjtAEo3_OKAzC99IoDOEJAAVgBagVCQVNJQ3IIT1ZBSVhTQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Apr 14 - Mon, Apr 20 DTW Detroit STL St. Louis CA $359 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:14/04/2026TANYT&leg2=from:STL,to:DTW,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:358.06&airProductToken=AQpmCjII1YIBEgQ0NjczGOO0ASCuHCiCrYoDMOGtigM4S0AAWAFqBTJfZWNvcghLQVUyQUtEUwowCNWCARIDNDg1GK4cIPJcKI2vigMw5a-KAzhLQABYAWoFMl9lY29yCEtBVTJBS0RTEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Thu, Sep 10 - Sun, Sep 20 YVR Vancouver STL St. Louis CA $364 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:10/09/2026TANYT&leg2=from:STL,to:YVR,departure:20/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:363.09&airProductToken=AQpECiAIwYYBEgMzMDIYuI0BIJhdKMa2lwMw8biXAzhHQABYAQogCMGGARIEODY4NxiYXSDyXCjHuZcDMO26lwM4R0ABWAEKRAogCMGGARIEODY4OBjyXCCYXSimqJgDML2pmAM4R0AAWAEKIAjBhgESAzMxMRiYXSC4jQEoyKqYAzCDrZgDOEdAAVgBEgoIARABGAEqAkFDGAEiBAgBEAEoCCgEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, Apr 9 - Tue, Apr 21 YVR Vancouver STL St. Louis CA $409 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: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:408.83&airProductToken=AQpECiEIwaYBEgQyMDM0GLiNASCSASj99IkDML31iQM4WEAAWAEKHwjBpgESAzYxNRiSASDyXCj-9okDMOv4iQM4WEABWAEKRAofCMGmARIDMzg4GPJcIJIBKIL8igMwk_6KAzhYQABYAQohCMGmARIEMjA0MRiSASC4jQEo6_6KAzCm_4oDOFhAAVgBEgoIARABGAEqAkFTGAEiBAgBEAEoBDAB) ## 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 Frontenac's airport? ### How far is Lambert-St. Louis Intl. Airport (STL) from central Frontenac? ### What airport is best to fly into Frontenac? ### How many airlines fly to Frontenac? ### Which airlines fly to Frontenac? ### How many nonstop flights are there to Frontenac? ### Where are the most popular flights to Frontenac departing from? ### How long is the flight to Frontenac Airport? ### How to book the cheapest flight to Frontenac? ### Do you have any tips for my flight to Frontenac? > - Travelling on a plane can be a great experience if you pack the right gear. Firstly, you'll need basic toiletry items, such as deodorant and a toothbrush, a fresh set of clothes and something to read. Secondly, make room in your carry-on bag for your phone and charger, any daily medications and perhaps a quality neck pillow too. Lastly, remember to take your passport, travel papers and your credit cards. > > > Do not pack the following items in your hand luggage: > > > - While the list of restricted items can differ between air carriers, the general rule to follow is nothing sharp, flammable or explosive. This includes screwdrivers, blades, aerosol cans and flares. Sporting equipment like ice skates, and items that could injure passengers, such as swords and batons, can't come on board with you either. > > > What to wear on a flight: > > > - Your goal here is to feel as comfortable as you can. Choose flat, closed-toe shoes, dress in loose, breathable clothing and don't forget to bring a sweater in case it gets cold in the cabin. > - Deep vein thrombosis (DVT) can pose a risk on long-distance flights. It's the result of blood clots forming due to inactivity and poor circulation, so do some gentle foot and leg exercises in your seat and consider wearing compression socks or tights. ### How to get through airport security fast when flying to Frontenac? > - First things first. Your ID and travel documents will need to be presented to security personnel. Keep them handy to avoid fumbling around for them. > - Time to strip down. Well sort of. Your belt, coat, keys and other contents of your pockets, like your headphones, will need to go on a tray through the X-ray machine. Make your life easier by removing them as your turn draws near. > - All your electronic devices, including your laptop and phone, are also required to be separately scanned. > - Any liquids or gels, such as perfume or toothpaste, that you want to take on board must be no larger than 3.4 ounces (100 millilitres). They must also all fit inside a quart-size (one litre), clear zip-close bag. > - Lightweight sneakers are a good footwear choice as you're less likely to have to remove them when going through security. Boots and other heavy shoes are usually subjected to additional screening. > - Sharp or pointed items are prohibited in the cabin. They'll be seized at security, so pack them in your checked baggage. ## Book with confidence Expedia.ca gives you the best tools to secure great deals on flights to Frontenac. 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 Frontenac. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Frontenac. 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 Frontenac 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 Frontenac. Looking to save even more? Get additional savings by bundling your Frontenac 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 Frontenac trip! ## Travel information | Destination airport | Lambert-St. Louis Intl. | | ----------------------------- | ----------------------- | | Destination airport IATA code | STL | | Destination city name | St. Louis | | Roundtrip price | CA $270 | ## Trending flights to Frontenac Prices were available within the past 7 days and start at CA $160 for one-way flights and CA $271 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) Thu, Apr 16 - Sat, Apr 18 YVR Vancouver STL St. Louis CA $362 Roundtrip found 1 hour ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:16/04/2026TANYT&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:361.79&airProductToken=AQpvCjYIxJgBEgQyNDgzGLiNASDMfCj5wooDMMfEigM4RUAAWAFqCU1BSU5CQVNJQ3IIVkFVU0EwQlEKNQjEmAESBDE2MDkYzHwg8lwov8aKAzCex4oDOEVAAVgBaglNQUlOQkFTSUNyCFZBVVNBMEJRCm8KNQjEmAESBDE1OTcY8lwgzHwo59WKAzDG1ooDOEVAAFgBaglNQUlOQkFTSUNyCFZBVVNBMEJRCjYIxJgBEgQyNDgyGMx8ILiNASiK14oDMO7YigM4RUABWAFqCU1BSU5CQVNJQ3IIVkFVU0EwQlESCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Other - [2 Star Hotels in Ladue ](https://www.expedia.ca/2Star-Ladue-St-Louis-Hotels.s20-n3000445131-0.Travel-Guide-Filter-Hotels) - 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