Title: $28 Cheap Flights & Airfare to St. Clair County - Expedia.com ![Mounds from Pre-Colombian Native American city (Mississippian culture) located in Collinsville, IL, near St. Louis, MO. Dates to 1050-1350. Added to list of UNESCO World Heritage Sites in 1982.](https://images.trvl-media.com/place/6142384/60a656d6-7005-4ef1-bf2a-603f64ce6e1b.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by LJ Alan ![](https://images.trvl-media.com/place/6142384/60a656d6-7005-4ef1-bf2a-603f64ce6e1b.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to St. Clair County from $28 [View $28 flight on Sat, Feb 28, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:DEN,to:STL,departure:2/28/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:27.98&airProductToken=AQowCi4IxnISBDMzMDIYg2kg8lwozLGGAzDMsoYDOEVAAFgBagRQQ18xcgdLMDdTWFMyEgoIARABGAEqAkY5GAEiBAgBEAEoAigDMA0) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travelers 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 [St. Clair County Hotels](https://expedia.com/Destinations-In-St-Clair-County.d553248635976433122.Hotel-Destinations)[Vacation Rentals in St. Clair County](https://expedia.com/Destinations-In-St-Clair-County.d553248635976433122.Vacation-Rental-Destinations)[Car Rentals in St. Clair County](https://expedia.com/Destinations-In-St-Clair-County.d553248635976433122.Car-Rental-Destinations)[St. Clair County Vacations](https://expedia.com/St-Clair-County.d553248635976433122.Destination-Travel-Guides) ## Popular airlines to St. Clair County - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines - ![](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 OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## How much is the cheapest flight to St. Clair County? Prices were available within the past 7 days and start at $28 for one-way flights and $56 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) Sat, Apr 18 - Sat, Apr 25 DEN Denver STL St. Louis $56 Roundtrip found 1 hour ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DEN,to:STL,departure:4/18/2026TANYT&leg2=from:STL,to:DEN,departure:4/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:55.96&airProductToken=AQowCi4IxnISBDMzMDIYg2kg8lwo6NqKAzDs24oDOEVAAFgBagRQQ18xcgdLMjFTWFMyCjAKLgjGchIENDU2NxjyXCCDaSiIq4sDMKGsiwM4RUAAWAFqBFBDXzFyB0syMVNYUzISCggBEAEYASoCRjkYASIECAEQASgCKAMwDQ) ![Frontier Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif) Sat, Feb 28 - Wed, Mar 4 ATL Atlanta STL St. Louis $57 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ATL,to:STL,departure:2/28/2026TANYT&leg2=from:STL,to:ATL,departure:3/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:56.96&airProductToken=AQowCi4IxnISBDQ0NzMY4Fwg8lwotK6GAzCjr4YDOEVAAFgBagRQQ18xcgdLMDdTWFM5CjAKLgjGchIENDQ3NBjyXCDgXCjJ4oYDMK3jhgM4RUAAWAFqBFBDXzFyB0sxNFhYUzISCggBEAEYASoCRjkYASIECAEQASgCKAMwDQ) ![Frontier Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif) Thu, Mar 26 - Tue, Mar 31 ATL Atlanta STL St. Louis $63 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ATL,to:STL,departure:3/26/2026TANYT&leg2=from:STL,to:ATL,departure:3/31/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:62.96&airProductToken=AQowCi4IxnISBDQ0NzMY4Fwg8lwolNSIAzCD1YgDOEVAAFgBagRQQ18xcgdLMDdRWFM5CjAKLgjGchIENDQ3NBjyXCDgXCjbjYkDML-OiQM4RUAAWAFqBFBDXzFyB0swN1pYUzkSCggBEAEYASoCRjkYASIECAEQASgCKAMwDQ) ![Frontier Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif) Wed, Mar 18 - Wed, Mar 25 DEN Denver STL St. Louis $68 Roundtrip found 1 hour ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DEN,to:STL,departure:3/18/2026TANYT&leg2=from:STL,to:DEN,departure:3/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:67.96&airProductToken=AQowCi4IxnISBDMzMDIYg2kg8lwo0_mHAzDZ-ocDOEVAAFgBagRQQ18xcgdLMjFYWFMyCjAKLgjGchIENDU2NxjyXCCDaSiozogDMMXPiAM4RUAAWAFqBFBDXzFyB0syMVhYUzISCggBEAEYASoCRjkYASIECAEQASgCKAMwDQ) ![Frontier Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif) Thu, May 7 - Sat, May 9 DEN Denver STL St. Louis $71 Roundtrip found 3 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DEN,to:STL,departure:5/7/2026TANYT&leg2=from:STL,to:DEN,departure:5/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:70.96&airProductToken=AQowCi4IxnISBDMzMDIYg2kg8lwoyLCMAzDMsYwDOEVAAFgBagRQQ18xcgdaMjFSWFMyCjAKLgjGchIENDU2NxjyXCCDaSjIyIwDMOHJjAM4RUAAWAFqBFBDXzFyB0syMVNYUzISCggBEAEYASoCRjkYASIECAEQASgCKAMwDQ) ![Frontier Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif) Sat, Apr 18 - Thu, Apr 23 DEN Denver STL St. Louis $72 Roundtrip found 1 hour ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DEN,to:STL,departure:4/18/2026TANYT&leg2=from:STL,to:DEN,departure:4/23/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:71.96&airProductToken=AQowCi4IxnISBDMzMDIYg2kg8lwo6NqKAzDs24oDOEVAAFgBagRQQ18xcgdLMjFTWFMyCjAKLgjGchIENDU2NxjyXCCDaSjIlIsDMOGViwM4RUAAWAFqBFBDXzFyB1oyMVJYUzISCggBEAEYASoCRjkYASIECAEQASgCKAMwDQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, May 2 - Sat, May 9 DEN Denver STL St. Louis $129 Roundtrip found 1 hour ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DEN,to:STL,departure:5/2/2026TANYT&leg2=from:STL,to:DEN,departure:5/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:128.80&airProductToken=AQo4CjYI1YIBEgQxMjkzGINpIPJcKIb5iwMwh_qLAzhOQABYAWoKMV9iYXNpY2Vjb3IIR0FGMkpLQlMKOAo2CNWCARIEMTcyORjyXCCDaSjbxowDMPXHjAM4TkAAWAFqCjFfYmFzaWNlY29yCEdBRjJKS0JTEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Apr 25 - Sat, May 2 BOS Boston STL St. Louis $171 Roundtrip just found [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BOS,to:STL,departure:4/25/2026TANYT&leg2=from:STL,to:BOS,departure:5/2/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:170.41&airProductToken=AQpnCjIIwYIBEgQyMzkwGMGTASCuHCjPqIsDMJGqiwM4QkAAWAFqBUJBU0lDcghPVkFJSlNCWAoxCMGCARIEMjk1NhiuHCDyXCiSrIsDMN6siwM4QkABWAFqBUJBU0lDcghPVkFJSlNCWApnCjEIwYIBEgQzMTI4GPJcIK4cKIbziwMw4POLAzhCQABYAWoFQkFTSUNyCE9WQUlKU0JYCjIIwYIBEgQyOTUyGK4cIMGTASjt9YsDMIb3iwM4QkABWAFqBUJBU0lDcghPVkFJSlNCWBIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Sat, Apr 18 - Sat, Apr 25 DEN Denver STL St. Louis $176 Roundtrip found 1 hour ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DEN,to:STL,departure:4/18/2026TANYT&leg2=from:STL,to:DEN,departure:4/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:175.80&airProductToken=AQowCi4I15wBEgQyMTAyGINpIPJcKNvbigMw59yKAzhBQABYAWoDV0dBcgdBWk5WSDJFCjAKLgjXnAESBDE2ODgY8lwgg2ko-qmLAzCGq4sDOERAAFgBagNXR0FyB0RKTldUMkUSCggBEAEYASoCV04YASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Nov 10 - Tue, Nov 17 SEA Seattle STL St. Louis $189 Roundtrip found 1 hour ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:STL,departure:11/10/2026TANYT&leg2=from:STL,to:SEA,departure:11/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:188.80&airProductToken=AQoyCjAIwaYBEgMzODgYkgEg8lwo4OWcAzDK55wDOFhAAFgBagVTQVZFUnIIT0gyRUFWQk4KMgowCMGmARIDMzg4GPJcIJIBKOS2nQMw8LidAzhYQABYAWoFU0FWRVJyCE9IMkVBVkJOEgwIARABGAEqAkFTMgAYASIECAEQASgCKAMoBDAN) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Airports in St. Clair County Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:STL,departure:3/1/2026TANYT&leg2=from:STL,to:CMH,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) STL Lambert-St. Louis Intl. Cheapest [Flights from $191 ](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:STL,departure:3/1/2026TANYT&leg2=from:STL,to:CMH,departure:3/10/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) **Enjoy extra legroom, flight flexibility, and a seamless travel experience.** \*Flight schedules are subject to change. \*Flight schedules are subject to change. - Top Flights Destinations - Top St. Clair County Hotels - Airlines Operating - Expedia's Latest Trends ### Top Flight Destinations In St. Clair County - [Flights to St. Louis ](https://expedia.com/Cheap-Flights-To-St-Louis.d178309.Travel-Guide-Flights) - [Flights to O'Fallon ](https://expedia.com/Cheap-Flights-To-OFallon.d7403.Travel-Guide-Flights) - [Flights to Fairview Heights ](https://expedia.com/Cheap-Flights-To-Fairview-Heights.d10229.Travel-Guide-Flights) - [Flights to Collinsville ](https://expedia.com/Cheap-Flights-To-Collinsville.d7352.Travel-Guide-Flights) - [Flights to Belleville ](https://expedia.com/Cheap-Flights-To-Belleville.d55581.Travel-Guide-Flights) - [Flights to Troy ](https://expedia.com/Cheap-Flights-To-Troy.d10014.Travel-Guide-Flights) - [Flights to East St. Louis ](https://expedia.com/Cheap-Flights-To-East-St-Louis.d99713.Travel-Guide-Flights) - [Flights to Southern Illinois ](https://expedia.com/Cheap-Flights-To-Southern-Illinois.d6233859.Travel-Guide-Flights) - [Flights to Granite City ](https://expedia.com/Cheap-Flights-To-Granite-City.d8015.Travel-Guide-Flights) - [Flights to Swansea ](https://expedia.com/Cheap-Flights-To-Swansea.d164131.Travel-Guide-Flights) - [Flights to Columbia ](https://expedia.com/Cheap-Flights-To-Columbia.d6085095.Travel-Guide-Flights) - [Flights to Sparta ](https://expedia.com/Cheap-Flights-To-Sparta.d55972.Travel-Guide-Flights) - [Flights to Caseyville ](https://expedia.com/Cheap-Flights-To-Caseyville.d6580.Travel-Guide-Flights) - [Flights to Mascoutah ](https://expedia.com/Cheap-Flights-To-Mascoutah.d6123666.Travel-Guide-Flights) - [Flights to Shiloh ](https://expedia.com/Cheap-Flights-To-Shiloh.d6034466.Travel-Guide-Flights) - [Flights to Historic Route 66 ](https://expedia.com/Cheap-Flights-To-Historic-Route-66.d702654640613646336.Travel-Guide-Flights) - [Flights to Fairmont City ](https://expedia.com/Cheap-Flights-To-Fairmont-City.d6063181.Travel-Guide-Flights) - [Flights to Lebanon ](https://expedia.com/Cheap-Flights-To-Lebanon.d8565.Travel-Guide-Flights) - [Flights to Millstadt ](https://expedia.com/Cheap-Flights-To-Millstadt.d3000008245.Travel-Guide-Flights) - [Flights to Madison ](https://expedia.com/Cheap-Flights-To-Madison.d3000434494.Travel-Guide-Flights) ### Top Flight Destinations In the World - [Flights to Philippines ](https://expedia.com/Destinations-In-Philippines.d145.Flight-Destinations) - [Flights to Argentina ](https://expedia.com/Destinations-In-Argentina.d8.Flight-Destinations) - [Flights to Australia ](https://expedia.com/Destinations-In-Australia.d10.Flight-Destinations) - [Flights to China ](https://expedia.com/Destinations-In-China.d37.Flight-Destinations) - [Flights to France ](https://expedia.com/Destinations-In-France.d59.Flight-Destinations) - [Flights to United Kingdom ](https://expedia.com/Destinations-In-United-Kingdom.d190.Flight-Destinations) - [Flights to Greece ](https://expedia.com/Destinations-In-Greece.d67.Flight-Destinations) - [Flights to Germany ](https://expedia.com/Destinations-In-Germany.d64.Flight-Destinations) - [Flights to Indonesia ](https://expedia.com/Destinations-In-Indonesia.d81.Flight-Destinations) - [Flights to Mexico ](https://expedia.com/Destinations-In-Mexico.d117.Flight-Destinations) - [Flights to Italy ](https://expedia.com/Destinations-In-Italy.d86.Flight-Destinations) - [Flights to Colombia ](https://expedia.com/Destinations-In-Colombia.d38.Flight-Destinations) - [Flights to United States of America ](https://expedia.com/Destinations-In-United-States-Of-America.d201.Flight-Destinations) - [Flights to Thailand ](https://expedia.com/Destinations-In-Thailand.d178.Flight-Destinations) - [Flights to Russia ](https://expedia.com/Destinations-In-Russia.d153.Flight-Destinations) - [Flights to Brazil ](https://expedia.com/Destinations-In-Brazil.d23.Flight-Destinations) - [Flights to India ](https://expedia.com/Destinations-In-India.d80.Flight-Destinations) - [Flights to Canada ](https://expedia.com/Destinations-In-Canada.d31.Flight-Destinations) - [Flights to Spain ](https://expedia.com/Destinations-In-Spain.d166.Flight-Destinations) - [Flights to Türkiye ](https://expedia.com/Destinations-In-Turkiye.d183.Flight-Destinations) ### Top St. Clair County Hotels - [Casino Queen Hotel ](https://expedia.com/St-Louis-Hotels-Casino-Queen-Hotel.h459083.Hotel-Information) - [21C Museum Hotel St Louis ](https://expedia.com/St-Louis-Hotels-21C-Museum-Hotel-St-Louis.h89164592.Hotel-Information) - [Clayton Plaza Hotel & Extended Stay ](https://expedia.com/St-Louis-Hotels-Clayton-Plaza-Hotel-Extended-Stay.h18144.Hotel-Information) - [Drury Plaza Hotel St. Louis at the Arch ](https://expedia.com/St-Louis-Hotels-Drury-Plaza-Hotel-St-Louis-At-The-Arch.h546271.Hotel-Information) - [Pear Tree Inn St. Louis Airport ](https://expedia.com/St-Louis-Hotels-Pear-Tree-Inn-St-Louis-Airport.h1096579.Hotel-Information) - [Hyatt Regency St. Louis at The Arch ](https://expedia.com/St-Louis-Hotels-Hyatt-Regency-St-Louis-At-The-Arch.h14877.Hotel-Information) - [Heritage Inn & Suites St. Louis/Fenton, Trademark by Wyndham ](https://expedia.com/St-Louis-Hotels-Drury-Inn-Suites-St-Louis-Fenton.h42122.Hotel-Information) - [Magnolia Hotel St. Louis, a Tribute Portfolio Hotel ](https://expedia.com/St-Louis-Hotels-Magnolia-Hotel-St-Louis.h8131949.Hotel-Information) - [Live by Loews - St.Louis ](https://expedia.com/St-Louis-Hotels-Live-By-Lowes-StLouis.h39161277.Hotel-Information) - [Pear Tree Inn St. Louis Near Union Station ](https://expedia.com/St-Louis-Hotels-Pear-Tree-Inn-St-Louis-Near-Union-Station.h26572.Hotel-Information) - [Marriott St. Louis Grand ](https://expedia.com/St-Louis-Hotels-Marriott-St-Louis-Grand.h904712.Hotel-Information) - [Home2 Suites by Hilton St. Louis Downtown ](https://expedia.com/St-Louis-Hotels-Home2-Suites-St-Louis-Downtown.h76510729.Hotel-Information) - [River City Casino & Hotel ](https://expedia.com/St-Louis-Hotels-River-City-Casino-Hotel.h6456459.Hotel-Information) - [The Westin St. Louis ](https://expedia.com/St-Louis-Hotels-The-Westin-St-Louis.h460354.Hotel-Information) - [Angad Arts Hotel St. Louis, Tapestry Collection by Hilton ](https://expedia.com/St-Louis-Hotels-Angad-Arts-Hotel-St-Louis.h27616925.Hotel-Information) - [Renaissance St. Louis Airport Hotel ](https://expedia.com/St-Louis-Hotels-Renaissance-St-Louis-Airport-Hotel.h4672.Hotel-Information) - [Courtyard by Marriott St. Louis Downtown/Convention Center ](https://expedia.com/St-Louis-Hotels-Courtyard-By-Marriott-St-Louis-DowntownConvention-Center.h848402.Hotel-Information) - [Embassy Suites by Hilton St. Louis Downtown ](https://expedia.com/St-Louis-Hotels-Embassy-Suites-By-Hilton-St-Louis-Downtown.h4531472.Hotel-Information) - [Ameristar Casino Resort and Spa ](https://expedia.com/St-Louis-Hotels-Ameristar-Casino-Resort-And-Spa.h1873292.Hotel-Information) - [Courtyard by Marriott St Louis Creve Coeur ](https://expedia.com/St-Louis-Hotels-Courtyard-By-Marriott-St-Louis-Creve-Coeur.h11052.Hotel-Information) ### Airlines Operating - [Amber Air ](https://expedia.com/Amber-Air-Flights.c0A.Travel-Guide-Airlines) - [BlueAir ](https://expedia.com/BlueAir-Flights.c0B.Travel-Guide-Airlines) - [Catovair ](https://expedia.com/Cobra-Aviation-Flights.c0C.Travel-Guide-Airlines) - [Darwin Airline SA Lugano ](https://expedia.com/Darwin-Airline-SA-Lugano-Flights.c0D.Travel-Guide-Airlines) - [Evergreen International ](https://expedia.com/Evergreen-International-Flights.c0E.Travel-Guide-Airlines) - [Ghadames Air Transport ](https://expedia.com/Ghadames-Air-Transport-Flights.c0G.Travel-Guide-Airlines) - [Aircompany Kokshetau ](https://expedia.com/AirCompany-Kokshetau-Flights.c0K.Travel-Guide-Airlines) - [Palau Asia ](https://expedia.com/Palau-Asia-Flights.c0P.Travel-Guide-Airlines) - [Royal Airways Limited ](https://expedia.com/Royal-Airways-Limited-Flights.c0S.Travel-Guide-Airlines) - [Vietnam Air Service Co. ](https://expedia.com/Vietnam-Air-Service-Co-Flights.c0V.Travel-Guide-Airlines) ### Expedia's Latest Trends Hotels - [Downtown Chicago Hotels](https://expedia.com/Downtown-Chicago-Chicago-Hotels.0-n6350699-0.Travel-Guide-Filter-Hotels) - 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Prices quoted are per person, 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) Wed, Mar 4 - Wed, Mar 4 ATL Atlanta STL St. Louis $56 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ATL,to:STL,departure:3/4/2026TANYT&leg2=from:STL,to:ATL,departure:3/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:55.96&airProductToken=AQowCi4IxnISBDQ0NzMY4Fwg8lwotNuGAzCj3IYDOEVAAFgBagRQQ18xcgdLMTRYWFMyCjAKLgjGchIENDQ3NBjyXCDgXCjJ4oYDMK3jhgM4RUAAWAFqBFBDXzFyB0sxNFhYUzISCggBEAEYASoCRjkYASIECAEQASgCKAMwDQ) \*Available to One Key members.