Title: Cheap Flights to Walnut Hill , IL from CA $146 - 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 Walnut Hill , IL 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 [Hotels in Walnut Hill](https://expedia.ca/Walnut-Hill-Hotels.d553248634983204234.Travel-Guide-Hotels)[Walnut Hill Car Rentals](https://expedia.ca/Car-Rentals-In-Walnut-Hill.d553248634983204234.Car-Rental-Guide)[Walnut Hill Vacation Packages](https://expedia.ca/Walnut-Hill.d553248634983204234.Destination-Travel-Guides) ## Popular airlines to Walnut Hill - ![](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:Walnut Hill, Illinois, United States of America,departure:21/02/2026TANYT&leg2=from:Walnut Hill, Illinois, United States of America,to:CMH,departure:28/02/2026TANYT&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:Walnut Hill, Illinois, United States of America,departure:21/02/2026TANYT&leg2=from:Walnut Hill, Illinois, United States of America,to:CMH,departure:28/02/2026TANYT&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:Walnut Hill, Illinois, United States of America,departure:21/02/2026TANYT&leg2=from:Walnut Hill, Illinois, United States of America,to:CMH,departure:28/02/2026TANYT&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:Walnut Hill, Illinois, United States of America,departure:21/02/2026TANYT&leg2=from:Walnut Hill, Illinois, United States of America,to:CMH,departure:28/02/2026TANYT&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:Walnut Hill, Illinois, United States of America,departure:21/02/2026TANYT&leg2=from:Walnut Hill, Illinois, United States of America,to:CMH,departure:28/02/2026TANYT&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:Walnut Hill, Illinois, United States of America,departure:21/02/2026TANYT&leg2=from:Walnut Hill, Illinois, United States of America,to:CMH,departure:28/02/2026TANYT&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:Walnut Hill, Illinois, United States of America,departure:21/02/2026TANYT&leg2=from:Walnut Hill, Illinois, United States of America,to:CMH,departure:28/02/2026TANYT&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) ## How much is the cheapest flight to Walnut Hill? Prices were available within the past 7 days and start at CA $146 for one-way flights and CA $230 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Frontier Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif) Tue, Apr 14 - Wed, Apr 22 DTW Detroit STL St. Louis CA $230 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:14/04/2026TANYT&leg2=from:STL,to:DTW,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:229.70&airProductToken=AQpDCiAIxnISBDQyODYY47QBIMxwKOqrigMwkK2KAzhaQABYAQofCMZyEgQyNjM1GMxwIPJcKLuvigMw47CKAzhaQAFYAQpDCh8IxnISBDI2MzYY8lwgzHAo44eLAzD1iIsDOFpAAFgBCiAIxnISBDMzNjMYzHAg47QBKO-NiwMwnY-LAzhaQAFYARIKCAEQARgBKgJGORgBIgQIARABKAQwAQ) ![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 2 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) Thu, Apr 16 - Mon, Apr 20 DTW Detroit STL St. Louis CA $317 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:16/04/2026TANYT&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:316.70&airProductToken=AQpnCjIIwYIBEgQ1MDEzGOO0ASCuHCjov4oDMNLAigM4QkAAWAFqBUJBU0lDcghPVkFJWFNCVgoxCMGCARIEMTkyNhiuHCDyXCiJwYoDMNjBigM4QkABWAFqBUJBU0lDcghPVkFJWFNCVgpnCjEIwYIBEgQyNDQ0GPJcIK4cKNXsigMwrO2KAzhCQABYAWoFQkFTSUNyCE9WQUlYU0JWCjIIwYIBEgQ0MDU4GK4cIOO0ASiO7ooDMOruigM4QkABWAFqBUJBU0lDcghPVkFJWFNCVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Apr 7 - Tue, Apr 21 YVR Vancouver STL St. Louis CA $397 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YVR,to:STL,departure:07/04/2026TANYT&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:396.94&airProductToken=AQpECiEIwaYBEgQyMzA0GLiNASCSASjs2okDMKrbiQM4WEAAWAEKHwjBpgESAzM4OBiSASDyXCib3IkDMIfeiQM4WEABWAEKRAofCMGmARIDMzg4GPJcIJIBKIL8igMwk_6KAzhYQABYAQohCMGmARIEMjA0MRiSASC4jQEo6_6KAzCm_4oDOFhAAVgBEgoIARABGAEqAkFTGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, Mar 26 - Wed, Apr 1 DTW Detroit STL St. Louis CA $417 Roundtrip found 13 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DTW,to:STL,departure:26/03/2026TANYT&leg2=from:STL,to:DTW,departure:01/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:417.00&airProductToken=AQojCiEIxJgBEgQzNzM5GOO0ASDyXCiy1YgDMJbWiAM4RUAAWAEKIwohCMSYARIEMzg2MxjyXCDjtAEo1piJAzCvmYkDOEVAAFgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) Expedia.ca gives you the best tools to secure great deals on flights to Walnut Hill. 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 Walnut Hill. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Walnut Hill. 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 Walnut Hill 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 Walnut Hill. Looking to save even more? Get additional savings by bundling your Walnut Hill 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 Walnut Hill trip! __Flights to Walnut Hill information__ | Destination airport | Lambert-St. Louis Intl. | | ----------------------------- | ----------------------- | | Destination airport IATA code | STL | | Destination city name | St. Louis | | Roundtrip price | CA $230 | ## Trending flights to Walnut Hill Prices were available within the past 7 days and start at CA $146 for one-way flights and CA $230 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 8 hours 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.