$232+ Cheap flights from Illinois to the United Kingdom
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
Sep 28 — Oct 51
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to United Kingdom with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to United Kingdom
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Cheapest flights from Illinois to United KingdomExplore the most affordable flight options available from Illinois to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 29, 2026.
Explore the most affordable flight options available from Illinois to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:44 pm -
2 stops30h 06m
Thu 11/1911:00 am -
1 stop18h 16m
Deal found 8/24![Multiple Airlines logo]()
$604
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:30 pm -
1 stop35h 30m
Tue 11/39:35 am -
2 stops38h 05m
Deal found 8/24![Multiple Airlines logo]()
$605
This Mytrip deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:30 pm -
2 stops22h 25m
Fri 11/66:35 pm -
2 stops28h 45m
Deal found 8/25![Multiple Airlines logo]()
$618
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:35 pm -
2 stops33h 25m
Fri 11/612:35 pm -
1 stop16h 41m
Deal found 8/24![Multiple Airlines logo]()
$632
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:30 pm -
1 stop34h 45m
Tue 11/39:35 am -
2 stops38h 05m
Deal found 8/24![Multiple Airlines logo]()
$635
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:05 pm -
1 stop30h 45m
Wed 12/99:45 am -
1 stop20h 56m
Deal found 8/29![Multiple Airlines logo]()
$644
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/74:26 pm -
1 stop33h 49m
Tue 11/179:35 am -
2 stops38h 05m
Deal found 8/28![Multiple Airlines logo]()
$647
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:35 pm -
2 stops33h 25m
Thu 11/511:00 am -
1 stop18h 16m
Deal found 8/24![Multiple Airlines logo]()
$649
This Mytrip deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:25 pm -
2 stops21h 50m
Tue 9/291:40 pm -
2 stops34h 35m
Deal found 8/24![Multiple Airlines logo]()
$650
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:30 pm -
1 stop10h 15m
Mon 11/97:45 am -
2 stops15h 35m
Deal found 8/28![Multiple Airlines logo]()
$664
This Mytrip deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:30 pm -
1 stop10h 15m
Tue 11/101:35 pm -
2 stops31h 55m
Deal found 8/26![Multiple Airlines logo]()
$667
This Kiwi.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:30 pm -
1 stop10h 15m
Thu 11/128:00 am -
2 stops15h 20m
Deal found 8/25![Multiple Airlines logo]()
$668
Best flights from Illinois to United KingdomDiscover carefully curated flight deals from Illinois to United Kingdom that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 29, 2026.
Discover carefully curated flight deals from Illinois to United Kingdom that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 29, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:15 pm -
2 stops17h 35m
Thu 11/59:05 pm -
2 stops25h 40m
Deal found 8/24![Scandinavian Airlines logo]()
$711
This Icelandair deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:30 pm -
1 stop10h 15m
Sun 12/611:55 am -
1 stop11h 25m
Deal found 8/28![Icelandair logo]()
$729
This Mytrip deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:25 pm -
2 stops19h 05m
Thu 10/158:30 am -
2 stops15h 45m
Deal found 8/24![Multiple Airlines logo]()
$736
This United Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/115:20 pm -
1 stop11h 05m
Wed 1/136:50 am -
2 stops15h 23m
Deal found 8/28![United Airlines logo]()
$802
This Turkish Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:10 pm -
1 stop38h 40m
Thu 10/225:35 pm -
1 stop30h 40m
Deal found 8/28![Turkish Airlines logo]()
$836
This TAP AIR PORTUGAL deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/118:10 pm -
1 stop13h 35m
Thu 12/174:00 pm -
1 stop29h 30m
Deal found 8/28![TAP AIR PORTUGAL logo]()
$845
This Virgin Atlantic deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/105:25 pm -
1 stop12h 15m
Wed 2/246:30 am -
2 stops16h 20m
Deal found 8/28![Virgin Atlantic logo]()
$874
This Delta deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:27 pm -
1 stop15h 53m
Wed 10/216:30 am -
2 stops17h 30m
Deal found 8/28![Delta logo]()
$888
This KLM deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/144:50 pm -
1 stop10h 00m
Wed 10/2110:00 am -
1 stop10h 30m
Deal found 8/25![KLM logo]()
$904
This Finnair deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:55 pm -
Nonstop7h 45m
Tue 9/297:30 am -
1 stop16h 20m
Deal found 8/26![Finnair logo]()
$924
This British Airways deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/31:31 pm -
2 stops15h 29m
Sat 2/138:00 am -
1 stop16h 45m
Deal found 8/24![British Airways logo]()
$932
This SWISS deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:40 pm -
1 stop11h 45m
Mon 10/59:25 am -
1 stop12h 30m
Deal found 8/24![SWISS logo]()
$1,094
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:30 pm -
1 stop12h 30m
Thu 12/106:00 am -
1 stop17h 20m
Deal found 8/24![Multiple Airlines logo]()
$787
This Icelandair deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/156:30 pm -
1 stop10h 15m
Thu 1/711:55 am -
1 stop11h 25m
Deal found 8/28![Icelandair logo]()
$797
This Scandinavian Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:15 pm -
2 stops15h 45m
Fri 10/237:05 am -
2 stops15h 05m
Deal found 8/26![Scandinavian Airlines logo]()
$808
This Turkish Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:10 pm -
1 stop38h 30m
Tue 10/65:35 pm -
1 stop22h 05m
Deal found 8/28![Turkish Airlines logo]()
$836
This United Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/99:50 pm -
Nonstop8h 10m
Tue 2/236:50 am -
1 stop11h 20m
Deal found 8/28![United Airlines logo]()
$863
This Mytrip deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/266:30 pm -
2 stops15h 45m
Mon 11/306:00 am -
2 stops18h 20m
Deal found 8/28![Multiple Airlines logo]()
$804
This Delta deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:13 pm -
1 stop12h 27m
Wed 11/256:30 am -
2 stops16h 09m
Deal found 8/26![Delta logo]()
$888
This Virgin Atlantic deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:41 pm -
1 stop12h 04m
Wed 12/911:20 am -
1 stop12h 41m
Deal found 8/24![Virgin Atlantic logo]()
$899
This Turkish Airlines deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:25 am -
1 stop23h 25m
Fri 10/235:35 pm -
1 stop22h 05m
Deal found 8/25![Turkish Airlines logo]()
$837
This British Airways deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/223:33 pm -
2 stops14h 17m
Thu 1/2811:50 am -
1 stop12h 55m
Deal found 8/26![British Airways logo]()
$932
This KLM deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2311:30 am -
2 stops14h 50m
Sat 2/275:50 am -
1 stop14h 35m
Deal found 8/25![KLM logo]()
$940
This Scandinavian Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:15 pm -
2 stops32h 25m
Tue 11/2412:55 pm -
2 stops33h 50m
Deal found 8/26![Scandinavian Airlines logo]()
$864
This United Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:30 pm -
Nonstop8h 25m
Thu 10/156:50 am -
1 stop11h 10m
Deal found 8/28![United Airlines logo]()
$873
This Delta deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:49 pm -
1 stop11h 36m
Wed 10/216:30 am -
2 stops16h 17m
Deal found 8/25![Delta logo]()
$889
This Virgin Atlantic deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:25 pm -
1 stop18h 10m
Wed 11/257:45 am -
1 stop12h 40m
Deal found 8/25![Virgin Atlantic logo]()
$903
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:30 pm -
1 stop12h 35m
Thu 11/56:00 am -
1 stop17h 20m
Deal found 8/24![Multiple Airlines logo]()
$822
This TAP AIR PORTUGAL deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/228:10 pm -
2 stops30h 10m
Sat 3/204:35 pm -
1 stop28h 55m
Deal found 8/28![TAP AIR PORTUGAL logo]()
$1,024
This Scandinavian Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:15 pm -
1 stop14h 45m
Wed 10/76:40 am -
2 stops21h 03m
Deal found 8/27![Scandinavian Airlines logo]()
$869
Last-minute flights from Illinois to United KingdomDiscover last-minute flight deals from Illinois to United Kingdom. Data last updated August 29, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to United Kingdom. Data last updated August 29, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:25 pm -
2 stops21h 50m
Tue 9/291:40 pm -
2 stops34h 35m
Deal found 8/24![Multiple Airlines logo]()
$650
This oojo deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:25 pm -
1 stop10h 30m
Mon 12/1412:15 pm -
1 stop11h 05m
Deal found 8/26![Icelandair logo]()
$715
This oojo deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:25 pm -
1 stop10h 30m
Tue 10/278:35 pm -
1 stop26h 45m
Deal found 8/28![Icelandair logo]()
$716
This Flightnetwork deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 pm -
1 stop34h 20m
Thu 10/17:50 pm -
1 stop26h 10m
Deal found 8/24![TAP AIR PORTUGAL logo]()
$710
This Gotogate deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:25 pm -
1 stop10h 30m
Tue 10/69:25 pm -
1 stop30h 00m
Deal found 8/26![Icelandair logo]()
$706
This Mytrip deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:25 pm -
2 stops18h 15m
Tue 10/65:50 pm -
2 stops33h 35m
Deal found 8/28![Multiple Airlines logo]()
$714
This FlightHub deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:25 pm -
1 stop10h 30m
Fri 10/21:05 pm -
1 stop14h 20m
Deal found 8/24![Icelandair logo]()
$722
This oojo deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:25 pm -
1 stop13h 15m
Sat 10/33:40 pm -
1 stop32h 35m
Deal found 8/24![Icelandair logo]()
$717
This FlightHub deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:25 pm -
1 stop13h 15m
Fri 10/23:40 pm -
1 stop11h 45m
Deal found 8/24![Icelandair logo]()
$722
This Flightnetwork deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:25 pm -
1 stop10h 30m
Tue 10/69:25 pm -
1 stop26h 50m
Deal found 8/29![Icelandair logo]()
$707
This Cheapflightsfares deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:25 pm -
1 stop13h 15m
Wed 10/73:40 pm -
1 stop11h 45m
Deal found 8/28![Icelandair logo]()
$707
This oojo deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:25 pm -
1 stop13h 15m
Tue 10/63:40 pm -
1 stop32h 35m
Deal found 8/26![Icelandair logo]()
$716
One-way flights from Illinois to United KingdomSearch for one-way flight options from Illinois to United Kingdom. Find affordable one-way fares based on user searches. Data last updated August 29, 2026.
Search for one-way flight options from Illinois to United Kingdom. Find affordable one-way fares based on user searches. Data last updated August 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:35 pm -
2 stops33h 25m
Deal found 8/25![Multiple Airlines logo]()
$232
This Mytrip deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:30 pm -
1 stop10h 15m
Deal found 8/26![Icelandair logo]()
$249
This Mytrip deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1610:25 pm -
1 stop31h 15m
Deal found 8/26![Icelandair logo]()
$251
This oojo deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:30 pm -
1 stop10h 15m
Deal found 8/27![Icelandair logo]()
$254
This FlightHub deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:30 pm -
1 stop10h 15m
Deal found 8/26![Icelandair logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:50 pm -
2 stops49h 30m
Deal found 8/28![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:35 pm -
2 stops33h 25m
Deal found 8/25![Multiple Airlines logo]()
$276
This Mytrip deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:25 pm -
2 stops20h 00m
Deal found 8/24![Multiple Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:25 pm -
2 stops44h 35m
Deal found 8/24![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1810:25 pm -
2 stops31h 40m
Deal found 8/28![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:30 pm -
2 stops31h 30m
Deal found 8/26![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:30 pm -
1 stop35h 30m
Deal found 8/25![Multiple Airlines logo]()
$295
Find flight deals from Illinois to United Kingdom
Keep the following information in mind while searching for Illinois to United Kingdom flight deals. Data was last updated August 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $604 (Kiwi.com) |
One-way from | $232 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $899 |
Good round-trip deal | $990 or less |
Good one-way deal | $449 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to United Kingdom that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 29, 2026.
Use the filters below to find and compare flights from Illinois to the United Kingdom that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Sat 10/31
8:15 pm-6:50 pm
2 stops17h 35m
London Heathrow
Thu 11/5
9:05 pm-4:45 pm
2 stops25h 40m
$711
ChicagoManchester
ORD Chicago O'Hare Intl - MAN Manchester
ORDMAN
Chicago O'Hare Intl
Wed 12/2
6:30 pm-10:45 am
1 stop10h 15m
Manchester
Sun 12/6
11:55 am-5:20 pm
1 stop11h 25m
$729
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Thu 10/8
7:25 pm-8:30 pm
2 stops19h 05m
London Luton
Thu 10/15
8:30 am-6:15 pm
2 stops15h 45m
$736
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Thu 12/3
6:30 pm-1:00 pm
1 stop12h 30m
London Luton
Thu 12/10
6:00 am-5:20 pm
1 stop17h 20m
$787
ChicagoManchester
ORD Chicago O'Hare Intl - MAN Manchester
ORDMAN
Chicago O'Hare Intl
Tue 12/15
6:30 pm-10:45 am
1 stop10h 15m
Manchester
Thu 1/7
11:55 am-5:20 pm
1 stop11h 25m
$797
St. LouisLondon
STL Lambert-St Louis - LHR London Heathrow
STLLHR
Lambert-St Louis
Mon 1/11
5:20 pm-10:25 am
1 stop11h 05m
London Heathrow
Wed 1/13
6:50 am-4:13 pm
2 stops15h 23m
$802
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Thu 11/26
6:30 pm-4:15 pm
2 stops15h 45m
London Luton
Mon 11/30
6:00 am-6:20 pm
2 stops18h 20m
$804
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Tue 9/29
7:15 pm-5:00 pm
2 stops15h 45m
London Heathrow
Fri 10/23
7:05 am-4:10 pm
2 stops15h 05m
$808
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Sat 10/31
7:30 pm-1:05 pm
1 stop12h 35m
London Luton
Thu 11/5
6:00 am-5:20 pm
1 stop17h 20m
$822
ChicagoLondon
ORD Chicago O'Hare Intl - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Mon 10/12
8:10 pm-4:50 pm
1 stop38h 40m
London Stansted
Thu 10/22
5:35 pm-6:15 pm
1 stop30h 40m
$836
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to United Kingdom
Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Illinois with our price prediction graph.
ORD-LHR
ORD-MAN
ORD-LTN
STL-LHR
ORD-STN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to the United Kingdom
USIL-GB0
ORD-LHR
ORD-MAN
ORD-LTN
STL-LHR
What is the cheapest month to book a flight from Illinois to United Kingdom?
Currently, January is the cheapest month in which you can book a flight from Illinois to United Kingdom (average of $660). Flying from Illinois to United Kingdom in June is currently the most expensive (average of $1,347). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to GB?
Find hourly flight availability from Illinois to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 29, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to United Kingdom as you normally would.
Weekly flight availability from Illinois to United Kingdom
Explore weekly flight availability from Illinois to United Kingdom. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 29, 2026.
The most flights from USIL to GB0 are scheduled on a Wednesday (54 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (43 on average).
How far ahead should I book a flight from Illinois to United Kingdom?
The price you pay for your flight from Illinois to United Kingdom may vary depending on when you book. For the best chance of a lower fare, look to book 9 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Related info for your journey
Find useful and relevant information for your journey from Illinois to United Kingdom. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to United Kingdom
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to United Kingdom by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to United Kingdom by cabin class
Find flights from Illinois to United Kingdom, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and United Kingdom flights
Browse other Illinois and United Kingdom flight options. Last updated on August 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from United Kingdom
Find the right flight back to Illinois after your stay in United Kingdom
Illinois to United Kingdom flights
Consider these flights traveling from Illinois to United Kingdom.
Fly to United Kingdom regions
Consider these flights traveling to United Kingdom regions.
Top 10 airlines flying from Illinois to United Kingdom
Discover the top 10 airlines that operate flights from Illinois to United Kingdom. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$144 | Average$713 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$362 | Average$781 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$428 | Average$713 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$430 | Average$676 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$458 | Average$823 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$476 | Average$704 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$488 | Average$1,268 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$520 | Average$850 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$522 | Average$809 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$523 | Average$1,064 | FlexibilityNo cancel fee | On-time71% |