$229+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
Sep 1 — Sep 81
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
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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 2, 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 2, 2026.
This deal was found by Cheapflights users on 7/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:30 pm
ORD
- LGW
1 stop10h 25m
Icelandair
Wed 11/1811:55 am
LGW
- ORD
1 stop11h 25m
Icelandair
Deal found 7/31![Icelandair logo]()
$689
This Scandinavian Airlines deal was found by Cheapflights users on 7/30. 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.
Sun 10/258:15 pm
ORD
- LHR
2 stops55h 40m
Scandinavian Airlines
Thu 10/297:05 am
LHR
- ORD
2 stops15h 40m
Scandinavian Airlines
Deal found 7/30![Scandinavian Airlines logo]()
$690
This Mytrip deal was found by Cheapflights users on 8/1. 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 9/237:25 pm
ORD
- LGW
2 stops15h 40m
Multiple Airlines
Wed 9/308:50 am
LGW
- ORD
2 stops18h 35m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$690
This Mytrip deal was found by Cheapflights users on 8/1. 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 9/157:25 pm
ORD
- STN
2 stops22h 45m
Multiple Airlines
Tue 9/227:10 am
STN
- ORD
2 stops17h 05m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$690
This Mytrip deal was found by Cheapflights users on 8/1. 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 9/237:25 pm
ORD
- LHR
1 stop18h 55m
Icelandair
Wed 9/309:25 pm
LHR
- ORD
1 stop26h 50m
Icelandair
Deal found 8/1![Icelandair logo]()
$691
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/249:20 am
ORD
- LGW
2 stops41h 55m
Multiple Airlines
Fri 10/3012:35 pm
LGW
- ORD
1 stop16h 15m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$691
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Mon 9/147:25 pm
ORD
- LGW
2 stops17h 00m
Multiple Airlines
Mon 9/216:05 pm
LGW
- ORD
2 stops30h 10m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$692
This Mytrip deal was found by Cheapflights users on 7/31. 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 10/1410:25 pm
ORD
- STN
2 stops16h 10m
Multiple Airlines
Wed 10/284:40 pm
STN
- ORD
2 stops30h 05m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$692
This Gotogate deal was found by Cheapflights users on 7/30. 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 10/187:25 pm
ORD
- LHR
1 stop10h 30m
Icelandair
Wed 10/2812:15 pm
LHR
- ORD
1 stop11h 05m
Icelandair
Deal found 7/30![Icelandair logo]()
$693
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:25 pm
ORD
- STN
2 stops19h 45m
Multiple Airlines
Sat 10/245:55 am
STN
- ORD
2 stops18h 20m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$693
This Booking.com deal was found by Cheapflights users on 8/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:15 pm
ORD
- LHR
1 stop17h 15m
Scandinavian Airlines
Sun 11/89:05 pm
LHR
- ORD
2 stops25h 40m
Scandinavian Airlines
Deal found 8/1![Scandinavian Airlines logo]()
$694
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/216:05 am
ORD
- LGW
1 stop21h 55m
Multiple Airlines
Wed 10/2810:10 am
LGW
- ORD
1 stop18h 40m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$694
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 2, 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 2, 2026.
This Mytrip deal was found by Cheapflights users on 7/30. 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 1/36:30 pm
ORD
- LTN
2 stops11h 50m
Multiple Airlines
Sat 1/169:30 pm
LTN
- ORD
2 stops24h 00m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$728
This Scandinavian Airlines deal was found by Cheapflights users on 7/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:15 pm
ORD
- LHR
1 stop17h 15m
Scandinavian Airlines
Mon 11/309:05 pm
LHR
- ORD
2 stops25h 40m
Scandinavian Airlines
Deal found 7/29![Scandinavian Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Fri 11/65:00 am
ORD
- LHR
1 stop10h 20m
United Airlines
Sat 11/711:05 am
LHR
- ORD
1 stop31h 05m
United Airlines
Deal found 8/1![United Airlines logo]()
$826
This Turkish Airlines deal was found by Cheapflights users on 7/30. 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.
Wed 10/2111:25 am
ORD
- STN
1 stop23h 15m
Turkish Airlines
Thu 10/2910:55 am
STN
- ORD
1 stop29h 05m
Turkish Airlines
Deal found 7/30![Turkish Airlines logo]()
$832
This Icelandair deal was found by Cheapflights users on 7/28. 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.
Sun 8/3010:25 pm
ORD
- LHR
1 stop31h 30m
Icelandair
Tue 9/229:25 pm
LHR
- ORD
1 stop30h 00m
Icelandair
Deal found 7/28![Icelandair logo]()
$837
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/241:55 pm
ORD
- LHR
1 stop11h 20m
Delta
Thu 12/38:40 am
LHR
- ORD
1 stop11h 45m
Delta
Deal found 7/29![Delta logo]()
$855
This Virgin Atlantic deal was found by Cheapflights users on 7/29. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:30 am
ORD
- LGW
2 stops20h 30m
Virgin Atlantic
Fri 11/2010:00 am
LGW
- ORD
2 stops19h 59m
Virgin Atlantic
Deal found 7/29![Virgin Atlantic logo]()
$876
This British Airways deal was found by Cheapflights users on 8/1. 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.
Sun 11/85:10 pm
ORD
- LHR
Nonstop7h 45m
British Airways
Wed 11/1111:00 am
LHR
- ORD
Nonstop8h 45m
British Airways
Deal found 8/1![British Airways logo]()
$880
This KLM deal was found by Cheapflights users on 7/30. 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.
Mon 9/214:50 pm
ORD
- LCY
1 stop10h 00m
KLM
Tue 9/299:20 am
LCY
- ORD
1 stop10h 55m
KLM
Deal found 7/30![KLM logo]()
$900
This JetBlue deal was found by Cheapflights users on 7/28. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:01 am
ORD
- LGW
1 stop16h 34m
JetBlue
Wed 8/1912:20 pm
LGW
- ORD
1 stop13h 07m
JetBlue
Deal found 7/28![JetBlue logo]()
$936
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/31. 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 10/96:00 pm
ORD
- LGW
1 stop33h 45m
TAP AIR PORTUGAL
Sun 10/1812:05 pm
LGW
- ORD
2 stops37h 17m
TAP AIR PORTUGAL
Deal found 7/31![TAP AIR PORTUGAL logo]()
$1,065
This SWISS deal was found by Cheapflights users on 7/31. 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 9/223:50 pm
ORD
- LCY
1 stop14h 45m
SWISS
Tue 9/297:15 pm
LCY
- ORD
1 stop23h 40m
SWISS
Deal found 7/31![SWISS logo]()
$1,118
This Mytrip deal was found by Cheapflights users on 8/1. 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 10/1311:05 am
ORD
- LTN
2 stops20h 55m
Multiple Airlines
Sun 10/259:45 pm
LTN
- ORD
2 stops25h 35m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$782
This Scandinavian Airlines deal was found by Cheapflights users on 7/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:15 pm
ORD
- LHR
1 stop14h 45m
Scandinavian Airlines
Sun 9/207:30 pm
LHR
- ORD
1 stop26h 40m
Scandinavian Airlines
Deal found 7/28![Scandinavian Airlines logo]()
$823
This Turkish Airlines deal was found by Cheapflights users on 8/1. 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 9/2211:25 am
ORD
- STN
1 stop23h 25m
Turkish Airlines
Wed 9/305:45 pm
STN
- ORD
1 stop21h 55m
Turkish Airlines
Deal found 8/1![Turkish Airlines logo]()
$833
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:00 pm
MDW
- LHR
1 stop11h 25m
Delta
Tue 9/298:40 am
LHR
- MDW
2 stops15h 39m
Delta
Deal found 7/29![Delta logo]()
$884
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:30 pm
ORD
- LTN
2 stops20h 35m
Multiple Airlines
Sun 11/159:45 pm
LTN
- ORD
2 stops25h 35m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$806
This Virgin Atlantic deal was found by Cheapflights users on 7/29. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/154:25 pm
ORD
- LCY
1 stop10h 25m
Virgin Atlantic
Fri 11/208:40 am
LCY
- ORD
2 stops18h 54m
Virgin Atlantic
Deal found 7/29![Virgin Atlantic logo]()
$888
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Fri 12/113:45 pm
ORD
- LHR
Nonstop8h 10m
United Airlines
Thu 12/176:35 am
LHR
- ORD
1 stop17h 50m
United Airlines
Deal found 8/1![United Airlines logo]()
$902
This Turkish Airlines deal was found by Cheapflights users on 7/28. 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 11/178:15 pm
ORD
- STN
1 stop31h 40m
Turkish Airlines
Tue 11/245:20 pm
STN
- ORD
1 stop22h 40m
Turkish Airlines
Deal found 7/28![Turkish Airlines logo]()
$833
This KLM deal was found by Cheapflights users on 7/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/254:25 pm
ORD
- LCY
1 stop9h 45m
KLM
Sat 12/58:40 am
LCY
- ORD
1 stop11h 45m
KLM
Deal found 7/28![KLM logo]()
$929
This British Airways deal was found by Cheapflights users on 7/31. 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 9/307:05 pm
ORD
- LHR
Nonstop8h 00m
British Airways
Mon 10/53:15 pm
LHR
- ORD
Nonstop9h 00m
British Airways
Deal found 7/31![British Airways logo]()
$948
This Delta deal was found by Cheapflights users on 8/1. 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.
Sun 9/271:19 pm
MDW
- LHR
1 stop11h 51m
Delta
Tue 10/66:30 am
LHR
- MDW
2 stops16h 17m
Delta
Deal found 8/1![Delta logo]()
$885
This Scandinavian Airlines deal was found by Cheapflights users on 7/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:15 pm
ORD
- LHR
2 stops15h 10m
Scandinavian Airlines
Sun 9/207:50 pm
LHR
- ORD
2 stops26h 20m
Scandinavian Airlines
Deal found 7/29![Scandinavian Airlines logo]()
$886
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:30 pm
ORD
- LTN
2 stops21h 20m
Multiple Airlines
Wed 11/257:00 am
LTN
- ORD
2 stops16h 20m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$840
This Virgin Atlantic deal was found by Cheapflights users on 7/31. 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 12/21:55 pm
ORD
- LGW
2 stops19h 50m
Virgin Atlantic
Sun 12/610:00 am
LGW
- ORD
2 stops17h 42m
Virgin Atlantic
Deal found 7/31![Virgin Atlantic logo]()
$925
This Turkish Airlines deal was found by Cheapflights users on 7/31. 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.
Thu 10/88:10 pm
ORD
- EDI
1 stop31h 35m
Turkish Airlines
Thu 10/225:00 pm
EDI
- ORD
1 stop31h 15m
Turkish Airlines
Deal found 7/31![Turkish Airlines logo]()
$855
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:40 pm
ORD
- LHR
Nonstop8h 15m
United Airlines
Fri 9/42:10 pm
LHR
- ORD
Nonstop9h 05m
United Airlines
Deal found 7/29![United Airlines logo]()
$953
This Scandinavian Airlines deal was found by Cheapflights users on 7/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:15 pm
ORD
- LHR
1 stop14h 45m
Scandinavian Airlines
Sun 9/205:00 pm
LHR
- ORD
1 stop29h 10m
Scandinavian Airlines
Deal found 7/29![Scandinavian Airlines logo]()
$892
This Delta deal was found by Cheapflights users on 8/1. 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.
Sun 11/229:30 am
MDW
- LHR
1 stop16h 15m
Delta
Fri 11/276:30 am
LHR
- MDW
2 stops17h 34m
Delta
Deal found 8/1![Delta logo]()
$896
Last-minute flights from Illinois to United KingdomDiscover last-minute flight deals from Illinois to United Kingdom. Data last updated August 2, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to United Kingdom. Data last updated August 2, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Tue 8/45:13 pm
ORD
- LGW
1 stop34h 47m
Multiple Airlines
Thu 10/152:00 pm
LGW
- ORD
1 stop15h 55m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$704
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Wed 8/55:13 pm
ORD
- LGW
1 stop34h 47m
Multiple Airlines
Wed 10/142:00 pm
LGW
- ORD
1 stop29h 16m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$709
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Fri 8/710:16 am
ORD
- LGW
1 stop17h 44m
Multiple Airlines
Thu 8/272:00 pm
LGW
- ORD
1 stop15h 08m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$706
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/1010:16 am
ORD
- LGW
1 stop17h 44m
Multiple Airlines
Sat 8/292:00 pm
LGW
- ORD
1 stop15h 08m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$707
This Mytrip deal was found by Cheapflights users on 7/28. 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.
Mon 8/177:25 pm
ORD
- LGW
2 stops21h 00m
Multiple Airlines
Mon 8/246:05 pm
LGW
- ORD
2 stops30h 10m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$703
This Mytrip deal was found by Cheapflights users on 7/28. 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.
Mon 8/177:25 pm
ORD
- STN
2 stops17h 50m
Multiple Airlines
Mon 8/2410:00 pm
STN
- ORD
3 stops30h 05m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$706
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Wed 8/198:45 am
ORD
- LGW
2 stops19h 15m
Multiple Airlines
Wed 9/22:00 pm
LGW
- ORD
1 stop15h 08m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$702
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/207:05 am
ORD
- LGW
2 stops20h 55m
Multiple Airlines
Sat 8/292:00 pm
LGW
- ORD
1 stop15h 08m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$714
This Mytrip deal was found by Cheapflights users on 8/1. 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 8/227:25 pm
ORD
- STN
2 stops20h 15m
Multiple Airlines
Thu 8/276:30 am
STN
- ORD
3 stops36h 52m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$716
This Mytrip deal was found by Cheapflights users on 7/30. 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 8/2310:25 pm
ORD
- STN
2 stops19h 15m
Multiple Airlines
Fri 8/2810:50 pm
STN
- ORD
2 stops27h 03m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$717
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:25 pm
ORD
- LGW
2 stops19h 00m
Multiple Airlines
Tue 9/89:35 pm
LGW
- ORD
2 stops28h 13m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$691
This Mytrip deal was found by Cheapflights users on 7/28. 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.
Tue 8/257:25 pm
ORD
- STN
2 stops22h 45m
Multiple Airlines
Tue 9/17:10 am
STN
- ORD
2 stops17h 05m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$702
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 2, 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 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/1910:35 am
STL
- LGW
2 stops41h 25m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Tue 10/2010:35 am
STL
- LGW
2 stops17h 25m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 10/2110:35 am
STL
- LGW
2 stops17h 25m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/2210:35 am
STL
- LGW
2 stops17h 25m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Tue 10/67:25 pm
ORD
- EDI
2 stops13h 55m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Sat 10/177:25 pm
ORD
- EDI
2 stops23h 35m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$289
This Mytrip deal was found by Cheapflights users on 8/2. 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 10/169:50 am
ORD
- EDI
1 stop18h 20m
Multiple Airlines
Deal found 8/2![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/2810:25 pm
ORD
- EDI
2 stops19h 55m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$296
This KAYAK deal was found by Cheapflights users on 7/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:29 pm
ORD
- LHR
1 stop14h 36m
British Airways
Deal found 7/30![British Airways logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/157:00 am
ORD
- LGW
2 stops21h 00m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$302
This Mytrip deal was found by Cheapflights users on 7/30. 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
ORD
- STN
2 stops21h 15m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$302
This Justfly.com deal was found by Cheapflights users on 7/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:25 pm
ORD
- LHR
1 stop10h 30m
Icelandair
Deal found 7/29![Icelandair logo]()
$303
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 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $689 |
One-way from | $229 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $756 |
Good round-trip deal | $1,001 or less |
Good one-way deal | $401 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 2,558,603 searches. Data last updated August 2, 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 - LTN
ORDLTN
Chicago O'Hare Intl
Sun 1/3
6:30 pm-12:20 pm
2 stops11h 50m
London Luton
Sat 1/16
9:30 pm-3:30 pm
2 stops24h 00m
$728
ChicagoLondon
ORD - LTN
ORDLTN
Chicago O'Hare Intl
Tue 10/13
11:05 am-2:00 pm
2 stops20h 55m
London Luton
Sun 10/25
9:45 pm-6:20 pm
2 stops25h 35m
$782
ChicagoLondon
ORD - LTN
ORDLTN
Chicago O'Hare Intl
Fri 11/6
6:30 pm-9:05 pm
2 stops20h 35m
London Luton
Sun 11/15
9:45 pm-5:20 pm
2 stops25h 35m
$806
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Thu 11/26
7:15 pm-6:30 pm
1 stop17h 15m
London Heathrow
Mon 11/30
9:05 pm-4:45 pm
2 stops25h 40m
$815
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Mon 9/14
7:15 pm-4:00 pm
1 stop14h 45m
London Heathrow
Sun 9/20
7:30 pm-4:10 pm
1 stop26h 40m
$823
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Fri 11/6
5:00 am-9:20 pm
1 stop10h 20m
London Heathrow
Sat 11/7
11:05 am-12:10 pm
1 stop31h 05m
$826
ChicagoLondon
ORD - STN
ORDSTN
Chicago O'Hare Intl
Wed 10/21
11:25 am-4:40 pm
1 stop23h 15m
London Stansted
Thu 10/29
10:55 am-11:00 am
1 stop29h 05m
$832
ChicagoLondon
ORD - STN
ORDSTN
Chicago O'Hare Intl
Tue 9/22
11:25 am-4:50 pm
1 stop23h 25m
London Stansted
Wed 9/30
5:45 pm-9:40 am
1 stop21h 55m
$833
ChicagoLondon
ORD - STN
ORDSTN
Chicago O'Hare Intl
Tue 11/17
8:15 pm-9:55 am
1 stop31h 40m
London Stansted
Tue 11/24
5:20 pm-10:00 am
1 stop22h 40m
$833
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Sun 8/30
10:25 pm-11:55 am
1 stop31h 30m
London Heathrow
Tue 9/22
9:25 pm-9:25 pm
1 stop30h 00m
$837
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-LGW
ORD-STN
ORD-LTN
ORD-LHR
ORD-LCY
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-LGW
ORD-STN
ORD-LTN
ORD-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 $649). 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 2, 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 2, 2026.
The most flights from USIL to GB0 are scheduled on a Friday (57 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (31 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 2, 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 2,558,603 searches. Data last updated August 2, 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$721 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$430 | Average$659 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$458 | Average$786 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$476 | Average$701 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$488 | Average$1,109 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$516 | Average$835 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$520 | Average$912 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$522 | Average$809 | FlexibilityNo cancel fee | On-time75% |