Title: Cheap Flights to Illinois - Expedia.co.uk ![](https://images.trvl-media.com/place/215/aa920d34-e093-4af5-87ef-8a5ae8eefcac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/215/aa920d34-e093-4af5-87ef-8a5ae8eefcac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £323 Cheap Flights to Illinois [View £323 flight on Tue, 10 Feb 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:LHR,to:ORD,departure:10/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:322.45&airProductToken=AQpjCjAIxZIBEgMxNTkY64kBIIMNKLrkhAMwj-WEAzhHQABYAWoEU0FWUnIIT0xYNUM1QjQKLwjFkgESAzEyNRiDDSCuHCjI5oQDMMvqhAM4T0ABWAFqBFNBVlJyCE9MWDVDNUI0EgoIARABGAEqAkVJGAEiBAgBEAEoAigDKAQwDQ) - [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 [Illinois Hotels](https://expedia.co.uk/Destinations-In-Illinois.d215.Hotel-Destinations)[Holiday Rentals in Illinois](https://expedia.co.uk/Destinations-In-Illinois.d215.Holiday-Rental-Destinations)[Illinois Car Hire](https://expedia.co.uk/Destinations-In-Illinois.d215.Car-Hire-Destinations)[Illinois Holidays](https://expedia.co.uk/Illinois.d215.Holidays-City-Breaks) ## Popular airlines to Illinois - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines - ![Frontier Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United - ![Southwest Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines - ![Spirit Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_NK.svg) Spirit Airlines - ![JetBlue Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways - ![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) ## Cheap round-trip flights to Illinois Prices were available within the past 7 days and start at £323 for one-way flights and £402 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![TAP Portugal](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TP.gif) Wed, 28 Jan - Sun, 8 Feb LHR London ORD Chicago £402 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:28/01/2026TANYT&leg2=from:ORD,to:LHR,departure:08/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:401.25&airProductToken=AQpsCjUI1KABEgQxMzYzGOuJASCLkgEoqM-DAzDN0IMDOE9AAFgBagdESVNDSU5UcghPRjBEU0lINwozCNSgARIDMjQzGIuSASCuHCjt0YMDMKzWgwM4T0AAWAFqB0RJU0NJTlRyCE9GMERTSUg3CmwKMwjUoAESAzI0NBiuHCCLkgEo0dSEAzCs2IQDOE9AAFgBagdESVNDSU5UcghPRjBEU0lINwo1CNSgARIEMTM1OBiLkgEg64kBKKXchAMwz92EAzhPQABYAWoHRElTQ0lOVHIIT0YwRFNJSDcSCggBEAEYASoCVFAYASIECAEQASgCKAMoBDAN) ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Mon, 2 Feb - Thu, 5 Feb LHR London ORD Chicago £404 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:02/02/2026TANYT&leg2=from:ORD,to:LHR,departure:05/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:403.65&airProductToken=AQplCjEI05YBEgM1MDIY64kBIOI7KMyJhAMwuoqEAzhUQABYAWoFTGlnaHRyCFRMRVU2R0hUCjAI05YBEgM5NDMY4jsgrhwoiouEAzC1j4QDOFRAAVgBagVMaWdodHIIVExFVTZHSFQKZgowCNOWARIDOTQ0GK4cIOI7KLCyhAMwlbaEAzhUQABYAWoFTGlnaHRyCFRMRVU2R0hUCjII05YBEgQxNTAxGOI7IOuJASj8uoQDMPS7hAM4VEABWAFqBUxpZ2h0cghUTEVVNkdIVBIKCAEQARgBKgJTSxgBIgQIARABKAIoAygEMA8) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Tue, 24 Feb - Fri, 27 Feb LHR London ORD Chicago £428 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:24/02/2026TANYT&leg2=from:ORD,to:LHR,departure:27/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:427.25&airProductToken=AQplCjEIxpIBEgM0NTEY64kBIIopKP-BhgMwwoOGAzhYQABYAWoFTElHSFRyCFhKMk1HQkxUCjAIxpIBEgM4NTMYiikgrhwo_oOGAzCYh4YDOFhAAVgBagVMSUdIVHIIWEoyTUdCTFQKZQowCMaSARIDODUyGK4cIIopKL6phgMwtayGAzhYQABYAWoFTElHSFRyCFhKMk1HQkxUCjEIxpIBEgM0NTAYiikg64kBKOeshgMwqq6GAzhYQAFYAWoFTElHSFRyCFhKMk1HQkxUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Tue, 13 Jan - Mon, 19 Jan LHR London ORD Chicago £488 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:13/01/2026TANYT&leg2=from:ORD,to:LHR,departure:19/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:487.45&airProductToken=AQpwCjEIzLABEgMzNDUY64kBILk8KMimggMwrKeCAzhLQABYAWoFRUxUMDByCEtMVkhBWEJRCjsIzLABEgQzMjA0GLk8IK4cKOinggMwxayCAzhLQABYAWoFRUxUMDByCEtMVkhBWEJReggI1YIBEgIxMgpjCi4IzLABEgE5GK4cILk8KPLyggMwhPeCAzhLQABYAWoFRUxUMDByCEtMVkhBWEJRCjEIzLABEgMzMzIYuTwg64kBKN73ggMwzPiCAzhLQABYAWoFRUxUMDByCEtMVkhBWEJREgoIARABGAEqAkxYGAEiBAgBEAEoAigDKAQwCw) ![Austrian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/OS.gif) Tue, 17 Feb - Mon, 23 Feb LHR London ORD Chicago £490 Return found 5 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:17/02/2026TANYT&leg2=from:ORD,to:LHR,departure:23/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:489.75&airProductToken=AQpqCjQIz6YBEgMzMzgY64kBIJUiKM22hQMw1LeFAzhLQABYAWoIRUNPTElHSFRyCEtMVkhBWEJRCjIIz6YBEgI0NRiVIiCuHCizvYUDMJDChQM4S0ABWAFqCEVDT0xJR0hUcghLTFZIQVhCUQpDCkEIz6YBEgQ3ODUwGK4cIOuJASiZ-4UDMIP_hQM4S0AAWAFqCEVDT0xJR0hUcghLTFZIQVhCUXoKCNWCARIENzg1MBIKCAIQARgCKgJPUxgBIgQIARABKAIoAygEMAs) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Tue, 13 Jan - Mon, 19 Jan LHR London ORD Chicago £492 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:13/01/2026TANYT&leg2=from:ORD,to:LHR,departure:19/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:491.05&airProductToken=AQp-Cj4IzJABEgQ0MjA1GOuJASCMFSisp4IDMJqoggM4S0AAWAFqBUVMVDAwcghLTFZIQVhCUXoKCNaYARIEMjQ4Nwo8CMyQARIEOTI2OBiMFSCuHCjRqIIDMJqtggM4S0AAWAFqBUVMVDAwcghLTFZIQVhCUXoJCNWCARIDOTUyCj8KPQjMkAESBDkzNDkYrhwg64kBKLbyggMwm_aCAzhLQABYAWoFRUxUMDByCEtMVkhBWEJRegkI1YIBEgM5MjASCggBEAEYASoCTEgYASIECAEQASgCKAMoBDAL) ![JetBlue Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/b6.gif) Mon, 2 Feb - Thu, 5 Feb LHR London ORD Chicago £492 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:02/02/2026TANYT&leg2=from:ORD,to:LHR,departure:05/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:491.39&airProductToken=AQpdCiwIwmwSAjIwGOuJASCpUSjEioQDMMSOhAM4TEAAWAFqAkROcghQTDIyTVZMMQotCMJsEgQxMzA1GKlRIK4cKKGPhAMw4JCEAzhMQAFYAWoCRE5yCFBMMjJNVkwxCmAKLQjCbBIDMzEyGK4cIMGTASj5rIQDMIquhAM4TEAAWAFqAkROcghQTDIyTVZMMQovCMJsEgQxNjIwGMGTASDriQEo7LGEAzD_tIQDOExAAVgBagJETnIIUEwyMk1WTDESCggBEAEYASoCQjYYASIECAEQASgCKAQoBjAB) ![Brussels Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SN.gif) Wed, 14 Jan - Mon, 19 Jan LHR London ORD Chicago £494 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:14/01/2026TANYT&leg2=from:ORD,to:LHR,departure:19/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:493.15&airProductToken=AQp7CjYI05wBEgQyMTA0GOuJASChpAEomrKCAzDbsoIDOEtAAFgBaghFQ09MSUdIVHIIS0xWSEFYQlEKQQjTnAESBDg4MDMYoaQBIK4cKKazggMwwreCAzhLQAFYAWoIRUNPTElHSFRyCEtMVkhBWEJRegoI1YIBEgQ4ODAzCkMKQQjTnAESBDkwOTAYrhwg64kBKLnxggMwo_WCAzhLQABYAWoIRUNPTElHSFRyCEtMVkhBWEJRegoI1YIBEgQ5MDkwEgoIAhABGAIqAlNOGAEiBAgBEAEoAigDKAQwCw) ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Tue, 20 Jan - Mon, 26 Jan LHR London ORD Chicago £495 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:20/01/2026TANYT&leg2=from:ORD,to:LHR,departure:26/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:494.31&airProductToken=AQpjCjAIxZIBEgMxNTMY64kBIIMNKNL2ggMwp_eCAzhBQABYAWoEU0FWUnIIT0xYOEMxQjQKLwjFkgESAzEyNRiDDSCuHCio-oIDMKv-ggM4T0ABWAFqBFNBVlJyCE9MWDhDMUI0CmMKLwjFkgESAzEyNBiuHCCDDSjUwoMDMIzGgwM4T0AAWAFqBFNBVlJyCE9MWDhDMUI0CjAIxZIBEgMxNjgYgw0g64kBKPfHgwMwx8iDAzhBQAFYAWoEU0FWUnIIT0xYOEMxQjQSCggBEAEYASoCRUkYASIECAEQASgCKAMoBDAN) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, 14 Jan - Wed, 28 Jan LHR London ORD Chicago £510 Return found 3 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:14/01/2026TANYT&leg2=from:ORD,to:LHR,departure:28/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:509.25&airProductToken=AQp4CkEI1YIBEgQ5MjMyGOuJASClBCj-soIDMN2zggM4S0AAWAFqCEVDT0JBU0lDcghLSlZIS1hCUXoKCMyQARIEOTIzMgozCNWCARIDOTA2GKUEIK4cKMa0ggMwgLmCAzhLQAFYAWoIRUNPQkFTSUNyCEtKVkhLWEJRCmwKNAjVggESBDI2NzcYrhwgiBgo8deDAzDp2IMDOEtAAFgBaghFQ09CQVNJQ3IIS0pWSEtYQlEKNAjVggESAzkyNBiIGCDriQEoo9mDAzDq3IMDOEtAAVgBaghFQ09CQVNJQ3IIS0pWSEtYQlESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ## Top tips for booking flights to Illinois from UK ### Get ready to fly to Illinois Prepare your luggage and book your flights to Illinois with Expedia. We offer a seamless flight booking experience, with a wide range of Illinois plane tickets to choose from. If you need help finding some of the best deals for cheap flights to Illinois in 2026, we are always available to assist you. Book your flights to Illinois today and let the adventure begin! ### Find the best tickets to Illinois To find some of the best tickets to Illinois in 2026, use Expedia's powerful search engine to compare dates and the different departure and arrival airports for your trip. Whether you're after direct flights to Illinois or last-minute flights to Illinois, you can filter and sort your search results, making it easy to find the ideal flight to Illinois. ### Airlines fly to Illinois There are 20 different airlines that fly to Illinois including some of the most trusted names in the business. To book flights to Illinois with your favourite airline, take a look at Expedia's flight listings and try out different dates to find some of the best Illinois plane tickets. ### Find the cheapest flights to Illinois By booking early you may find some of the best deals for Illinois flights from the UK, including Illinois direct flights. You can usually find affordable and cheap flights to Illinois, whether one-way from £323 or round-trip from £402, with Expedia if you book your trip far enough in advance. ### Find the best airports for cheap flights to Illinois Try searching for different Illinois airports with Expedia to find some of the cheapest flights to Illinois. Flights from London (LHR) to Chicago (ORD) usually have the lowest price from £323. ### Why book your flights to Illinois with Expedia Expedia offers great deals on Illinois air fares from £323 to cater to every budget. Not only is Expedia one of the top platforms to book flights to Illinois from the UK, it is also your one-stop shop for booking hotels, car rentals, and more. \*Prices and availability are subject to change. Additional terms apply. ## Illinois Flights Information | Airlines serving | Aer Lingus, JetBlue Airways, Swiss International Air Lines, Austrian Airlines, Lufthansa, Brussels Airlines, British Airways, Iberia, Virgin Atlantic, TAP Portugal, Scandinavian Airlines, Icelandair, United | | ---------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Roundtrip price | from £402 | ## Frequently asked questions ### How do I find cheap flights to Illinois that have flexible change policies? ### Which airlines fly to Illinois? > - United Airlines - 13,063 flights to or near Illinois each month, including 12,950 flights to O'Hare Intl. Airport (ORD) and 108 flights to Quad City Intl. Airport (MLI) per month. > - American Airlines - 8,977 flights to or near Illinois each month, including 8,855 flights to O'Hare Intl. Airport (ORD) and 121 flights to Quad City Intl. Airport (MLI) per month. > - Southwest Airlines - 5,997 flights to or near Illinois each month, including 5,334 flights to Midway Intl. Airport (MDW) and 663 flights to O'Hare Intl. Airport (ORD) per month. ### How can I find cheap tickets to Illinois? ### How much is a flight to Illinois? ### What are the most popular airports to fly into in Illinois? > - O'Hare Intl. Airport (ORD) - 25,318 flights per month. > - Midway Intl. Airport (MDW) - 5,962 flights per month. > - Quad City Intl. Airport (MLI) - 325 flights per month. ### When is the cheapest time to fly to Illinois? ### How much is a plane ticket to Illinois? ### What is the best time to go to Illinois? ### What months are the cheapest to book a flight to Illinois? - Top Flights Destinations - Top Illinois Hotels - Related Airlines - Expedia's Latest Trends ### Top Flight Destinations In Illinois - [Flights to Chicago ](https://expedia.co.uk/Cheap-Flights-To-Chicago.d178248.Travel-Guide-Flights) - [Flights to St. Louis ](https://expedia.co.uk/Cheap-Flights-To-St-Louis.d178309.Travel-Guide-Flights) - [Flights to Arlington Heights ](https://expedia.co.uk/Cheap-Flights-To-Arlington-Heights.d6231.Travel-Guide-Flights) - [Flights to Lake Geneva ](https://expedia.co.uk/Cheap-Flights-To-Lake-Geneva.d6046584.Travel-Guide-Flights) - [Flights to Galena ](https://expedia.co.uk/Cheap-Flights-To-Galena.d7956.Travel-Guide-Flights) - [Flights to Davenport ](https://expedia.co.uk/Cheap-Flights-To-Davenport.d10445.Travel-Guide-Flights) - 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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 ![TAP Portugal](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TP.gif) Wed, 28 Jan - Sun, 8 Feb LHR London ORD Chicago £402 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ORD,departure:28/01/2026TANYT&leg2=from:ORD,to:LHR,departure:08/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:401.25&airProductToken=AQpsCjUI1KABEgQxMzYzGOuJASCLkgEoqM-DAzDN0IMDOE9AAFgBagdESVNDSU5UcghPRjBEU0lINwozCNSgARIDMjQzGIuSASCuHCjt0YMDMKzWgwM4T0AAWAFqB0RJU0NJTlRyCE9GMERTSUg3CmwKMwjUoAESAzI0NBiuHCCLkgEo0dSEAzCs2IQDOE9AAFgBagdESVNDSU5UcghPRjBEU0lINwo1CNSgARIEMTM1OBiLkgEg64kBKKXchAMwz92EAzhPQABYAWoHRElTQ0lOVHIIT0YwRFNJSDcSCggBEAEYASoCVFAYASIECAEQASgCKAMoBDAN) \*Available to Expedia members.