Title: Cheap Flights from Southern Illinois - Expedia.co.uk ![](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 from Southern Illinois - [Return](?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 [Southern Illinois Travel Guide](https://expedia.co.uk/Southern-Illinois.dx6233859)[Hotels in Southern Illinois](https://expedia.co.uk/Southern-Illinois-Hotels.d6233859.Travel-Guide-Hotels)[Southern Illinois Car Hire](https://expedia.co.uk/Compare-Cheap-Car-Hire-In-Southern-Illinois.d6233859.Car-Hire-Guide)[Southern Illinois Holidays](https://expedia.co.uk/Southern-Illinois.d6233859.Holidays-City-Breaks) ## Popular airlines - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways - ![easyJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_U2.svg) easyJet - ![Lufthansa](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa - ![Ryanair](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_FR.svg) Ryanair - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines - ![Jet2](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LS.svg) Jet2 - ![Swiss International Air Lines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines ![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 25% 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.co.uk/login) ## Cheapest flights from Southern Illinois These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, 31 Dec - Mon, 5 Jan STL St. Louis DEN Denver £161 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:31/12/2025TANYT&leg2=from:DEN,to:STL,departure:05/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:160.80&airProductToken=AQpECiAIxJgBEgQyMzYzGPJcIPISKOCXgQMwrpmBAzhFQABYAQogCMSYARIEMTYyMxjyEiCDaSidm4EDMPWbgQM4RUABWAEKRAogCMSYARIEMjI3MRiDaSDMfCiA1YEDMIHWgQM4RUAAWAEKIAjEmAESBDE2MDkYzHwg8lwo0taBAzC214EDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, 25 Dec - Mon, 5 Jan STL St. Louis DEN Denver £206 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:25/12/2025TANYT&leg2=from:DEN,to:STL,departure:05/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:206.00&airProductToken=AQpECiAIxJgBEgQxNTk3GPJcIMx8KNXTgAMwt9SAAzhFQABYAQogCMSYARIEMjg0ORjMfCCDaSiE1YADMJTWgAM4RUABWAEKRAogCMSYARIEMjI3MRiDaSDMfCiA1YEDMIHWgQM4RUAAWAEKIAjEmAESBDE2MDkYzHwg8lwo0taBAzC214EDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, 31 Dec - Sun, 4 Jan STL St. Louis DEN Denver £217 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:31/12/2025TANYT&leg2=from:DEN,to:STL,departure:04/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:216.70&airProductToken=AQpECiAIxJgBEgQyMzYzGPJcIPISKOCXgQMwrpmBAzhFQABYAQogCMSYARIEMTYyMxjyEiCDaSidm4EDMPWbgQM4RUABWAEKRgohCMSYARIEMjc1OBiDaSDjtAEo-MGBAzCkw4EDOEVAAFgBCiEIxJgBEgQzNjM2GOO0ASDyXCjtxIEDMNzFgQM4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, 9 Jan - Fri, 16 Jan STL St. Louis LAS Las Vegas £222 Return found 3 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:09/01/2026TANYT&leg2=from:LAS,to:STL,departure:16/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:221.40&airProductToken=AQpfCi0IwaYBEgM2MTgY8lwgkgEowoCCAzDVgoIDOFhAAFgBagJTVnIIT0g1T0FKQk4KLgjBpgESAzQ3OBiSASCLkAEomISCAzCwhYIDOFhAAVgBagJTVnIIT0g1T0FKQk4KXwouCMGmARIDNzM1GIuQASCSASj1zoIDMKHQggM4WEAAWAFqAlNWcghPSDVPQUpCTgotCMGmARIDMzg4GJIBIPJcKJzRggMwg9OCAzhYQAFYAWoCU1ZyCE9INU9BSkJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, 31 Dec - Thu, 1 Jan STL St. Louis DEN Denver £230 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:31/12/2025TANYT&leg2=from:DEN,to:STL,departure:01/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:229.60&airProductToken=AQpECiAIxJgBEgQyMzYzGPJcIPISKOCXgQMwrpmBAzhFQABYAQogCMSYARIEMTYyMxjyEiCDaSidm4EDMPWbgQM4RUABWAEKRAogCMSYARIEMTEyORiDaSDMfCjsooEDMOejgQM4RUAAWAEKIAjEmAESBDE2MDkYzHwg8lwonqmBAzCAqoEDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, 22 Nov - Wed, 26 Nov STL St. Louis LAX Los Angeles £234 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAX,departure:22/11/2025TANYT&leg2=from:LAX,to:STL,departure:26/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:233.90&airProductToken=AQpFCiAIxJgBEgQyMzYzGPJcIPISKNLg_QIwm-L9AjhFQABYAQohCMSYARIEMTA5NRjyEiCLuAEo1uL9AjDU4_0COEVAAVgBCkUKIQjEmAESBDIzMTEYi7gBIPISKMKT_gIwtJT-AjhFQABYAQogCMSYARIEMjY2NhjyEiDyXCjrlP4CMJaW_gI4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sun, 2 Nov - Thu, 6 Nov STL St. Louis LAS Las Vegas £240 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:02/11/2025TANYT&leg2=from:LAS,to:STL,departure:06/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:239.30&airProductToken=AQpfCi0IwaYBEgM0NzMY8lwgkgEo7P_7AjD9gfwCOFhAAFgBagJTVnIIT0gyT0FVQk4KLgjBpgESAzU1MRiSASCLkAEoqYX8AjDDhvwCOFhAAVgBagJTVnIIR0gyT0NWQk4KXwouCMGmARIDNjI5GIuQASCSASigr_wCMM-w_AI4WEAAWAFqAlNWcghHSDJPQ1ZCTgotCMGmARIDNDcyGJIBIPJcKP2y_AIw57T8AjhYQAFYAWoCU1ZyCE9IMk9BVUJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sun, 23 Nov - Tue, 2 Dec STL St. Louis LAX Los Angeles £245 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAX,departure:23/11/2025TANYT&leg2=from:LAX,to:STL,departure:02/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:244.70&airProductToken=AQpFCiAIxJgBEgQxNDkyGPJcIPISKIvy_QIwz_P9AjhFQABYAQohCMSYARIEMTE5NxjyEiCLuAEo_vP9AjD_9P0COEVAAVgBCkUKIQjEmAESBDExOTQYi7gBIPISKJnU_gIwkNX-AjhFQABYAQogCMSYARIEMTQ5MhjyEiDyXCjm1f4CMIbX_gI4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sun, 2 Nov - Thu, 6 Nov STL St. Louis LAS Las Vegas £247 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAS,departure:02/11/2025TANYT&leg2=from:LAS,to:STL,departure:06/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:246.80&airProductToken=AQpfCi0IwaYBEgM0NzMY8lwgkgEo7P_7AjD9gfwCOFhAAFgBagJTVnIIT0gyT0FVQk4KLgjBpgESAzU1MRiSASCLkAEoqYX8AjDDhvwCOFhAAVgBagJTVnIIR0gyT0NWQk4KXwouCMGmARIDNzg1GIuQASCSASiEsPwCMLSx_AI4WEAAWAFqAlNWcghPSDJPQ1ZCTgotCMGmARIDNDcyGJIBIPJcKP2y_AIw57T8AjhYQAFYAWoCU1ZyCE9IMk9BVUJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, 25 Dec - Tue, 30 Dec STL St. Louis DEN Denver £252 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:25/12/2025TANYT&leg2=from:DEN,to:STL,departure:30/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:251.10&airProductToken=AQpECiAIxJgBEgQxNTk3GPJcIMx8KNXTgAMwt9SAAzhFQABYAQogCMSYARIEMjg0ORjMfCCDaSiE1YADMJTWgAM4RUABWAEKRAogCMSYARIEMTYxNhiDaSDMfCiSkYEDMIuSgQM4RUAAWAEKIAjEmAESBDE2MDkYzHwg8lwo3pKBAzDAk4EDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, 27 Nov - Fri, 28 Nov STL St. Louis LAX Los Angeles £253 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LAX,departure:27/11/2025TANYT&leg2=from:LAX,to:STL,departure:28/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:252.20&airProductToken=AQpFCiAIxJgBEgQxNTk3GPJcIMx8KNCY_gIwr5n-AjhFQABYAQohCMSYARIEMjEwMhjMfCCLuAEo-pn-AjDvm_4COEVAAVgBCkUKIQjEmAESBDI5MDYYi7gBIPISKNmk_gIw1KX-AjhFQABYAQogCMSYARIEMjQ1NRjyEiDyXCiIpv4CMLWn_gI4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Mon, 29 Dec - Wed, 31 Dec STL St. Louis DEN Denver £261 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:29/12/2025TANYT&leg2=from:DEN,to:STL,departure:31/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:260.80&airProductToken=AQpFCiEIwYIBEgQyMjY5GPJcIKOxASjMhoEDMMSHgQM4U0AAWAEKIAjBggESAzY2MhijsQEgg2kowYiBAzC-iYEDOFNAAVgBCkYKIQjBggESBDI2MTIYg2kgo7EBKJCXgQMwjJiBAzhPQABYAQohCMGCARIEMjI4ORijsQEg8lwoyZiBAzCymYEDOE9AAVgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Thu, 25 Dec - Thu, 1 Jan STL St. Louis DEN Denver £269 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:DEN,departure:25/12/2025TANYT&leg2=from:DEN,to:STL,departure:01/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:269.00&airProductToken=AQoiCiAI1YIBEgQxMzk2GPJcIINpKITVgAMwn9aAAzhTQABYAQoiCiAI1YIBEgQxNDIyGINpIPJcKIWpgQMwhqqBAzhLQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, 3 Dec - Fri, 12 Dec STL St. Louis PHX Phoenix £300 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:PHX,departure:03/12/2025TANYT&leg2=from:PHX,to:STL,departure:12/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:299.50&airProductToken=AQpfCi0IwaYBEgM0NzMY8lwgkgEozNz-AjDk3v4COFhAAFgBagJTVnIITkgyT0FVQk4KLgjBpgESAzc0NBiSASDvuQEo3-H-AjCN4_4COFhAAVgBagJTVnIIT0gyT0FWQk4KXwouCMGmARIDNjM3GO-5ASCSASjcxP8CMKHG_wI4WEAAWAFqAlNWcghPSDJPQVZCTgotCMGmARIDNDcyGJIBIPJcKP3H_wIw58n_AjhYQAFYAWoCU1ZyCE9IMk9BVUJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![Contour Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LF.gif) Sat, 6 Dec - Wed, 24 Dec CGI Cape Girardeau DFW Dallas £349 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CGI,to:DFW,departure:06/12/2025TANYT&leg2=from:DFW,to:CGI,departure:24/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:348.60&airProductToken=AQqIAQonCMyMARIEMzA4MxjCQSCuHCjC__4CMKaA_wI4QkAAWAFyBUIzQ05YCi0IwaYBEgMzMzcYrhwgkgEot4P_AjDThf8COE9AAVgBagJNQXIIT0gyT0FWTU4KLgjBpgESAzU0MhiSASCjsQEozYf_AjC4if8COE9AAVgBagJNQXIIT0gyT0FWTU4KKgooCMyMARIEMzA4NRijsQEgwkEorc6AAzCbz4ADOE1AAFgBcgVNMjFORRIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, 9 Jan - Fri, 16 Jan STL St. Louis MCO Orlando £400 Return found 9 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:MCO,departure:09/01/2026TANYT&leg2=from:MCO,to:STL,departure:16/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:399.90&airProductToken=AQpeCi0IwaYBEgM2MTgY8lwgkgEowoCCAzDVgoIDOFhAAFgBagJTVnIIUUgyRUFWQk4KLQjBpgESAzM4MRiSASDMcCiuhYIDMPaHggM4WEABWAFqAlNWcghOSDJFQVZCTgpeCi0IwaYBEgMzOTUYzHAgkgEokMuCAzCZzoIDOFhAAFgBagJTVnIIT0gyRUFWQk4KLQjBpgESAzM4OBiSASDyXCic0YIDMIPTggM4WEABWAFqAlNWcghRSDJFQVZCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, 24 Oct - Fri, 31 Oct STL St. Louis SAN San Diego £403 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:SAN,departure:24/10/2025TANYT&leg2=from:SAN,to:STL,departure:31/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:402.30&airProductToken=AQpfCi0IwaYBEgMzODgY8lwgkgEoqZ77AjC1oPsCOFhAAFgBagJTVnIIU0g0T0FKQk4KLgjBpgESBDExNTYYkgEgkmgonqH7AjDNovsCOFhAAVgBagJTVnIIU0g0T0FKQk4KjwEKLgjBpgESAzc0ORiSaCDvuAEoofD7AjDJ8fsCOFhAAFgBagJTVnIIT0gyT0FVQk4KLgjBpgESAzQ5ORjvuAEgkgEozPT7AjCP9fsCOFhAAVgBagJTVnIIT0gyT0FKQk4KLQjBpgESAzM4OBiSASDyXCiP9vsCMIL4-wI4WEABWAFqAlNWcghPSDJPQUpCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, 7 Mar - Sat, 14 Mar STL St. Louis TPA Tampa £464 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:TPA,departure:07/03/2026TANYT&leg2=from:TPA,to:STL,departure:14/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:464.00&airProductToken=AQpeCi0IwaYBEgMzMTQY8lwgkgEo54GHAzDxg4cDOFhAAFgBagJTVnIIT0gyRVhWQk4KLQjBpgESAzYzORiSASDzAyi1hocDMIOJhwM4WEABWAFqAlNWcghOSDJFQVZCTgpeCi0IwaYBEgM2NDAY8wMgkgEo9MuHAzDgzocDOFhAAFgBagJTVnIIU0gyRUFTQk4KLQjBpgESAzYxNRiSASDyXCi80ocDMKjUhwM4WEABWAFqAlNWcghRSDJFQVZCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, 23 Oct - Mon, 27 Oct STL St. Louis DFW Dallas £573 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:DFW,departure:23/10/2025TANYT&leg2=from:DFW,to:STL,departure:27/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:572.60&airProductToken=AQpfCi0IwaYBEgM0NzMY8lwgkgEo1Y77AjDlkPsCOFhAAFgBagJTVnIITkg0T0FWQk4KLgjBpgESAzU0ORiSASCjsQEo9ZL7AjDnlPsCOFhAAVgBagJTVnIIU0g3T0FWQk4KXwouCMGmARIDMzY1GKOxASCSASisvPsCMMC--wI4WEAAWAFqAlNWcghOSDdPQVZCTgotCMGmARIDNDcyGJIBIPJcKIHC-wIw68P7AjhYQAFYAWoCU1ZyCE5INE9BVkJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sun, 28 Dec - Fri, 2 Jan STL St. Louis MIA Miami £797 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:MIA,departure:28/12/2025TANYT&leg2=from:MIA,to:STL,departure:02/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:796.20&airProductToken=AQpeCi0IwaYBEgMzODgY8lwgkgEo3vqAAzDv_IADOFhAAFgBagJTVnIITUgwT0FTQk4KLQjBpgESAzc5MhiSASCMAijA_YADMJmAgQM4WEABWAFqAlNWcghOSDJPQVZCTgpeCi0IwaYBEgM3OTMYjAIgkgEo6a2BAzCKsYEDOFhAAFgBagJTVnIITEg3T0FWQk4KLQjBpgESAzQ3MhiSASDyXCidtIEDMIe2gQM4WEABWAFqAlNWcghRSDJPQVVCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ## How to Find Cheap Flights from Southern Illinois #### How much is a flight from Southern Illinois?        This week, flights from Southern Illinois are available between £161–£797.  #### How to find cheap flights from Southern Illinois? Expedia makes it easy to compare cheap flights from Southern Illinois to many destinations. Check out excellent deals on both domestic and international flights from Southern Illinois. Once you select an offer, use our filters and sort by “Price (Lowest)” to see the cheapest and most suitable options.  #### How can I get the best deal on flights from Southern Illinois? Expedia gives you access to all the hottest deals on plane tickets so you can get the most amount of value for the lowest price possible. An excellent strategy for finding the best deal on flights is to be flexible with your dates. For each offer, you can compare prices for similar time frames using our “Show flexible dates” feature. Depending on your destination, direct flights from Southern Illinois may be more expensive. Airlines with strict bag policies or fees can also impact your costs.  #### What is the best airline to fly from Southern Illinois? At Expedia, we give you all the available options from our reputable partners. Select the airline that best suits your preferences and membership loyalties. You can fly from Southern Illinois with: Delta, Alaska Airlines, American Airlines, United, Contour Airlines.  #### What is the best month to fly from Southern Illinois? Prices on plane tickets vary considerably throughout the year due to seasonal demand. Historically, the cheapest time to buy flights from Southern Illinois airport(s) is December.  #### When is the best time to book flights from Southern Illinois? ARC & Expedia Group historical data suggests that booking flights three weeks before departure and on a weekend, usually on a Sunday, can save you up to 20% on your fare. \* #### Are there any last-minute flights from Southern Illinois? Expedia is the place to find last-minute flights from Southern Illinois, making it easy for you to compare prices on flights in the near future for different combinations of travel dates and from multiple airlines. We source the best deals for you and display the best offers available over the next two weeks.  #### Why book with Expedia? Booking flights from Southern Illinois with Expedia is the obvious choice to get low prices, save money and see more value for every pound spent. We show you the best deals happening right now and provide a vast inventory of airlines and flight routes to choose from. You can customise your journey to your timeline, route preferences, budget, rewards programmes and more. Not only will you get a stellar deal, but you’ll also get rewards points back and the opportunity for additional discounts when bundling with a hotel or car hire. #### Can I change/cancel my flight?  Some flights can be changed or cancelled, but fees and refunds will depend on the unique terms of your flight agreement. Airlines have different rules and restrictions for exchanging or refunding flights. For more information, go to your itinerary or visit our customer service portal. We recommend choosing flights with no change fees for maximum flexibility. Filter by “Flexible change policies” to see flights with no change fees. \**Data specialists from both ARC and Expedia Group analyzed ARC’s global flight data to distill actionable information to help people save money on travel. While it’s impossible to guarantee when to find the lowest prices, after examining the variables, we were able to observe trends. Best day of the week to book and travel recommendation is based on average round-trip ticket prices for January through early October, for both 2019 and 2020, sourced from ARC’s global airline sales database.*. ## Travel information ## Flights from Southern Illinois: Essential Travel Information | Cheapest flight from Southern Illinois | £161 (roundtrip) | | --- | --- | | Best airlines to fly from Southern Illinois | Delta, Alaska Airlines, American Airlines, United, Contour Airlines | | Cheapest month to fly from Southern Illinois | December | | Southern Illinois IATA code | STL | | Southern Illinois Country/State | Illinois | | Airline ticket deals from Southern Illinois | £161 - £797 | ## Explore a world of travel with Expedia - Accommodation - Flights - Packages - Cars - Holiday Homes - [Addieville Hotels](https://www.expedia.co.uk/Addieville-Hotels.d3000420807.Travel-Guide-Hotels) - [Benton Hotels](https://www.expedia.co.uk/Benton-Hotels.d6866.Travel-Guide-Hotels) - [Bluford Hotels](https://www.expedia.co.uk/Bluford-Hotels.d3000346134.Travel-Guide-Hotels) - 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