$320+ 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
maj 18 — maj 251
Round-trip
1 adult, Economy
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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 Kwiecień 18, 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 Kwiecień 18, 2026.
This CrystalTravel deal was found by Cheapflights users on 4/13. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sob. 11/77:20 pm
ORD
- LHR
1 stop17h 10m
Scandinavian Airlines
czw. 11/126:40 am
LHR
- ORD
1 stop16h 05m
Scandinavian Airlines
Deal found 4/13![Scandinavian Airlines logo]()
$679
This Justfly.com deal was found by Cheapflights users on 4/14. 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.
wt. 9/158:10 pm
ORD
- STN
1 stop38h 30m
Turkish Airlines
wt. 9/225:35 pm
STN
- ORD
1 stop22h 05m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$679
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
pt. 11/67:20 pm
ORD
- LHR
1 stop14h 40m
Scandinavian Airlines
ndz. 11/1510:20 am
LHR
- ORD
1 stop12h 25m
Scandinavian Airlines
Deal found 4/13![Scandinavian Airlines logo]()
$680
This Mytrip deal was found by Cheapflights users on 4/13. 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.
ndz. 4/197:25 pm
ORD
- STN
2 stops18h 30m
Multiple Airlines
czw. 4/237:00 am
STN
- ORD
2 stops17h 15m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$681
This FlightHub deal was found by Cheapflights users on 4/13. 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.
ndz. 9/208:10 pm
ORD
- LGW
1 stop35h 00m
Turkish Airlines
wt. 9/295:35 pm
LGW
- ORD
1 stop22h 05m
Turkish Airlines
Deal found 4/13![Turkish Airlines logo]()
$683
This Mytrip deal was found by Cheapflights users on 4/15. 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.
wt. 4/287:25 pm
ORD
- STN
2 stops21h 15m
Multiple Airlines
sob. 5/93:25 pm
STN
- ORD
2 stops30h 35m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$683
This Booking.com deal was found by Cheapflights users on 4/14. 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.
wt. 9/158:10 pm
ORD
- STN
1 stop38h 30m
Turkish Airlines
czw. 10/155:35 pm
STN
- ORD
1 stop22h 05m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$685
This FlightHub deal was found by Cheapflights users on 4/13. 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.
ndz. 9/1311:25 am
ORD
- LGW
1 stop19h 45m
Turkish Airlines
czw. 9/242:05 pm
LGW
- ORD
1 stop25h 35m
Turkish Airlines
Deal found 4/13![Turkish Airlines logo]()
$686
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
pt. 11/67:20 pm
ORD
- LHR
2 stops15h 05m
Scandinavian Airlines
sob. 11/1410:20 am
LHR
- ORD
1 stop12h 25m
Scandinavian Airlines
Deal found 4/13![Scandinavian Airlines logo]()
$687
This FlightHub deal was found by Cheapflights users on 4/14. 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.
czw. 9/178:10 pm
ORD
- LGW
1 stop20h 15m
Turkish Airlines
wt. 9/225:35 pm
LGW
- ORD
1 stop22h 05m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$687
This Booking.com deal was found by Cheapflights users on 4/14. 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.
czw. 10/1511:25 am
ORD
- LGW
1 stop16h 30m
Turkish Airlines
wt. 10/275:05 pm
LGW
- ORD
1 stop23h 00m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$688
This Mytrip deal was found by Cheapflights users on 4/15. 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.
ndz. 5/310:25 pm
ORD
- STN
2 stops19h 25m
Multiple Airlines
wt. 5/1210:00 pm
STN
- ORD
2 stops27h 40m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$690
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 Kwiecień 18, 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 Kwiecień 18, 2026.
This Mytrip deal was found by Cheapflights users on 4/17. 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.
ndz. 5/310:25 pm
ORD
- LTN
2 stops17h 55m
Multiple Airlines
śr. 5/136:15 am
LTN
- ORD
2 stops19h 25m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$716
This Delta deal was found by Cheapflights users on 4/13. 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.
śr. 5/67:16 pm
MDW
- LHR
1 stop11h 49m
Delta
pt. 5/158:40 am
LHR
- MDW
2 stops15h 16m
Delta
Deal found 4/13![Delta logo]()
$872
This United Airlines deal was found by Cheapflights users on 4/18. 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.
wt. 5/56:40 pm
ORD
- LHR
Nonstop8h 20m
United Airlines
pt. 5/229:30 am
LHR
- ORD
1 stop31h 50m
United Airlines
Deal found 4/18![United Airlines logo]()
$892
This Virgin Atlantic deal was found by Cheapflights users on 4/15. 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.
ndz. 5/312:52 pm
MDW
- LHR
1 stop11h 33m
Virgin Atlantic
pt. 5/298:40 am
LHR
- MDW
2 stops15h 53m
Virgin Atlantic
Deal found 4/15![Virgin Atlantic logo]()
$903
This KLM deal was found by Cheapflights users on 4/13. 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.
czw. 4/234:20 pm
ORD
- LCY
1 stop11h 10m
KLM
wt. 4/289:20 am
LCY
- ORD
1 stop10h 55m
KLM
Deal found 4/13![KLM logo]()
$939
This Scandinavian Airlines deal was found by Cheapflights users on 4/17. 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.
wt. 8/257:00 am
ORD
- EDI
2 stops29h 25m
Scandinavian Airlines
śr. 9/29:20 am
EDI
- ORD
2 stops36h 50m
Scandinavian Airlines
Deal found 4/17![Scandinavian Airlines logo]()
$953
This Turkish Airlines deal was found by Cheapflights users on 4/15. 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.
czw. 4/308:10 pm
ORD
- STN
1 stop38h 40m
Turkish Airlines
śr. 5/2710:50 am
STN
- ORD
1 stop28h 50m
Turkish Airlines
Deal found 4/15![Turkish Airlines logo]()
$1,016
This SWISS deal was found by Cheapflights users on 4/13. 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.
wt. 9/299:35 pm
ORD
- LGW
2 stops14h 15m
SWISS
wt. 10/69:25 am
LGW
- ORD
1 stop12h 30m
SWISS
Deal found 4/13![SWISS logo]()
$1,159
This British Airways deal was found by Cheapflights users on 4/14. 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.
wt. 8/49:35 pm
STL
- LHR
Nonstop8h 00m
British Airways
wt. 8/114:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Deal found 4/14![British Airways logo]()
$1,269
This Mytrip deal was found by Cheapflights users on 4/16. 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.
śr. 5/279:55 am
ORD
- LTN
2 stops20h 40m
Multiple Airlines
ndz. 5/313:15 pm
LTN
- ORD
2 stops29h 15m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$795
This Delta deal was found by Cheapflights users on 4/13. 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.
wt. 8/115:30 pm
STL
- LHR
1 stop13h 45m
Delta
pt. 8/219:55 am
LHR
- STL
2 stops16h 55m
Delta
Deal found 4/13![Delta logo]()
$874
This United Airlines deal was found by Cheapflights users on 4/17. 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.
pon. 5/43:40 pm
ORD
- LHR
1 stop32h 50m
United Airlines
wt. 5/266:50 am
LHR
- ORD
1 stop11h 10m
United Airlines
Deal found 4/17![United Airlines logo]()
$893
This Mytrip deal was found by Cheapflights users on 4/13. 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.
pon. 4/277:25 pm
ORD
- LTN
2 stops20h 40m
Multiple Airlines
sob. 5/26:15 pm
LTN
- ORD
2 stops27h 45m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$815
This Virgin Atlantic deal was found by Cheapflights users on 4/17. 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.
wt. 5/51:24 pm
MDW
- LHR
1 stop11h 46m
Virgin Atlantic
śr. 5/201:25 pm
LHR
- MDW
1 stop13h 44m
Virgin Atlantic
Deal found 4/17![Virgin Atlantic logo]()
$904
This KLM deal was found by Cheapflights users on 4/17. 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.
pon. 5/44:50 pm
ORD
- LCY
1 stop10h 00m
KLM
pon. 5/119:20 am
LCY
- ORD
1 stop11h 10m
KLM
Deal found 4/17![KLM logo]()
$940
This Delta deal was found by Cheapflights users on 4/14. 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.
ndz. 5/39:59 am
STL
- LHR
1 stop19h 21m
Delta
wt. 5/129:55 am
LHR
- STL
2 stops17h 14m
Delta
Deal found 4/14![Delta logo]()
$875
This United Airlines deal was found by Cheapflights users on 4/16. 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.
czw. 5/79:40 pm
ORD
- LHR
Nonstop8h 15m
United Airlines
wt. 5/126:50 am
LHR
- ORD
1 stop11h 10m
United Airlines
Deal found 4/16![United Airlines logo]()
$910
This Scandinavian Airlines deal was found by Cheapflights users on 4/17. 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.
pon. 9/213:42 pm
STL
- LHR
2 stops18h 18m
Scandinavian Airlines
ndz. 10/49:05 pm
LHR
- STL
3 stops29h 45m
Scandinavian Airlines
Deal found 4/17![Scandinavian Airlines logo]()
$1,010
This Virgin Atlantic deal was found by Cheapflights users on 4/15. 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.
wt. 4/214:20 pm
ORD
- LCY
1 stop10h 30m
Virgin Atlantic
ndz. 4/268:15 pm
LCY
- ORD
1 stop24h 15m
Virgin Atlantic
Deal found 4/15![Virgin Atlantic logo]()
$940
This KLM deal was found by Cheapflights users on 4/17. 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.
pt. 4/244:20 pm
ORD
- LCY
1 stop11h 10m
KLM
wt. 4/288:25 am
LCY
- ORD
1 stop11h 50m
KLM
Deal found 4/17![KLM logo]()
$942
This Delta deal was found by Cheapflights users on 4/13. 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.
ndz. 5/101:59 pm
STL
- LHR
2 stops14h 31m
Delta
pt. 5/226:30 am
LHR
- STL
2 stops16h 46m
Delta
Deal found 4/13![Delta logo]()
$880
This Mytrip deal was found by Cheapflights users on 4/17. 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.
czw. 5/289:55 am
ORD
- LTN
2 stops20h 30m
Multiple Airlines
sob. 6/65:50 pm
LTN
- ORD
1 stop24h 00m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$909
This United Airlines deal was found by Cheapflights users on 4/15. 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.
wt. 4/214:25 pm
ORD
- LHR
Nonstop8h 20m
United Airlines
pon. 4/277:25 am
LHR
- ORD
1 stop16h 50m
United Airlines
Deal found 4/15![United Airlines logo]()
$911
This KLM deal was found by Cheapflights users on 4/16. 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.
wt. 4/284:20 pm
ORD
- LCY
1 stop10h 30m
KLM
pon. 5/410:00 am
LCY
- ORD
1 stop10h 30m
KLM
Deal found 4/16![KLM logo]()
$942
This Virgin Atlantic deal was found by Cheapflights users on 4/14. 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.
pt. 4/244:20 pm
ORD
- LCY
1 stop11h 10m
Virgin Atlantic
śr. 5/138:25 am
LCY
- ORD
2 stops15h 50m
Virgin Atlantic
Deal found 4/14![Virgin Atlantic logo]()
$950
This Turkish Airlines deal was found by Cheapflights users on 4/14. 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.
wt. 9/155:32 pm
STL
- LGW
2 stops22h 53m
Turkish Airlines
wt. 9/227:25 am
LGW
- STL
2 stops43h 57m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$1,169
This SWISS deal was found by Cheapflights users on 4/13. 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.
sob. 8/87:05 pm
ORD
- LGW
1 stop16h 45m
SWISS
ndz. 8/169:25 am
LGW
- ORD
1 stop12h 30m
SWISS
Deal found 4/13![SWISS logo]()
$1,184
This Delta deal was found by Cheapflights users on 4/14. 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.
śr. 4/291:06 pm
ORD
- LHR
1 stop11h 39m
Delta
pt. 5/296:30 am
LHR
- ORD
2 stops14h 27m
Delta
Deal found 4/14![Delta logo]()
$903
This Mytrip deal was found by Cheapflights users on 4/17. 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.
czw. 4/232:20 pm
ORD
- LTN
2 stops17h 40m
Multiple Airlines
wt. 4/287:50 pm
LTN
- ORD
2 stops23h 05m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$918
This United Airlines deal was found by Cheapflights users on 4/14. 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.
śr. 5/208:45 am
ORD
- LHR
1 stop18h 50m
United Airlines
śr. 6/36:50 am
LHR
- ORD
1 stop11h 10m
United Airlines
Deal found 4/14![United Airlines logo]()
$922
Last-minute flights from Illinois to United KingdomDiscover last-minute flight deals from Illinois to United Kingdom. Data last updated Kwiecień 18, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to United Kingdom. Data last updated Kwiecień 18, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 4/13. 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.
ndz. 4/197:25 pm
ORD
- STN
2 stops18h 30m
Multiple Airlines
czw. 4/237:00 am
STN
- ORD
2 stops17h 15m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$681
This Mytrip deal was found by Cheapflights users on 4/14. 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.
wt. 4/217:25 pm
ORD
- STN
2 stops22h 45m
Multiple Airlines
pon. 4/278:15 am
STN
- ORD
2 stops16h 00m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$701
This Mytrip deal was found by Cheapflights users on 4/13. 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.
pon. 4/277:25 pm
ORD
- LTN
2 stops20h 40m
Multiple Airlines
wt. 5/512:45 pm
LTN
- ORD
2 stops33h 15m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$693
This Mytrip deal was found by Cheapflights users on 4/15. 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.
pon. 4/277:25 pm
ORD
- LHR
2 stops18h 30m
Multiple Airlines
pon. 5/46:40 am
LHR
- ORD
2 stops17h 35m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$696
This Gotogate deal was found by Cheapflights users on 4/14. 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.
pon. 4/277:25 pm
ORD
- LGW
1 stop10h 20m
Icelandair
sob. 5/23:40 pm
LGW
- ORD
1 stop32h 35m
Icelandair
Deal found 4/14![Icelandair logo]()
$702
This Mytrip deal was found by Cheapflights users on 4/16. 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.
pon. 4/277:25 pm
ORD
- STN
2 stops21h 55m
Multiple Airlines
pon. 5/46:30 am
STN
- ORD
2 stops17h 45m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$704
This Mytrip deal was found by Cheapflights users on 4/15. 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.
wt. 4/287:25 pm
ORD
- STN
2 stops21h 15m
Multiple Airlines
sob. 5/93:25 pm
STN
- ORD
2 stops30h 35m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$683
This Mytrip deal was found by Cheapflights users on 4/15. 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.
wt. 4/287:25 pm
ORD
- STN
2 stops18h 10m
Multiple Airlines
czw. 5/78:30 am
STN
- ORD
2 stops15h 45m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$710
This Mytrip deal was found by Cheapflights users on 4/17. 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.
pt. 5/110:25 pm
ORD
- STN
2 stops20h 25m
Multiple Airlines
śr. 5/2710:00 pm
STN
- ORD
2 stops24h 59m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$703
This Mytrip deal was found by Cheapflights users on 4/15. 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.
ndz. 5/310:25 pm
ORD
- STN
2 stops19h 25m
Multiple Airlines
wt. 5/1210:00 pm
STN
- ORD
2 stops27h 40m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$690
This Mytrip deal was found by Cheapflights users on 4/16. 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.
ndz. 5/310:25 pm
ORD
- STN
2 stops19h 25m
Multiple Airlines
wt. 5/1910:00 pm
STN
- ORD
3 stops27h 40m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$697
This deal was found by Cheapflights users on 4/15. 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.
pt. 5/87:25 pm
ORD
- LGW
1 stop13h 15m
Icelandair
śr. 5/203:40 pm
LGW
- ORD
1 stop11h 45m
Icelandair
Deal found 4/15![Icelandair logo]()
$700
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 Kwiecień 18, 2026.
Search for one-way flight options from Illinois to United Kingdom. Find affordable one-way fares based on user searches. Data last updated Kwiecień 18, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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.
ndz. 8/169:40 pm
STL
- LHR
Nonstop8h 00m
British Airways
Deal found 4/17![British Airways logo]()
$320
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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.
wt. 8/45:18 pm
STL
- LHR
1 stop12h 52m
British Airways
Deal found 4/17![British Airways logo]()
$321
This oojo deal was found by Cheapflights users on 4/14. 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.
śr. 9/29:45 am
STL
- LHR
1 stop16h 15m
British Airways
Deal found 4/14![British Airways logo]()
$328
This Delta deal was found by Cheapflights users on 4/14. 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.
śr. 9/21:30 pm
STL
- LHR
2 stops14h 50m
Delta
Deal found 4/14![Delta logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
ndz. 5/310:25 pm
ORD
- EDI
3 stops29h 05m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$337
This oojo deal was found by Cheapflights users on 4/17. 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.
sob. 7/186:12 pm
STL
- LHR
1 stop30h 43m
British Airways
Deal found 4/17![British Airways logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
ndz. 7/2610:25 pm
ORD
- EDI
3 stops42h 15m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$342
This Expedia deal was found by Cheapflights users on 4/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ndz. 8/168:00 pm
STL
- LHR
2 stops32h 35m
Iberia
Deal found 4/17![Iberia logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
ndz. 10/410:25 pm
ORD
- EDI
3 stops33h 00m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
wt. 7/146:33 pm
STL
- LGW
2 stops33h 27m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$349
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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.
śr. 5/138:35 am
ORD
- EDI
1 stop18h 45m
JetBlue
Deal found 4/14![JetBlue logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
sob. 7/115:06 pm
ORD
- EDI
2 stops48h 14m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$351
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 Kwiecień 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $683 (Mytrip) |
One-way from | $320 (Cheapflightsfares) |
Popular in | June |
Cheapest in | February |
Average price | $696 |
Good round-trip deal | $930 or less |
Good one-way deal | $490 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 Kwiecień 18, 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
ndz. 5/3
10:25 pm-10:20 pm
2 stops17h 55m
London Luton
śr. 5/13
6:15 am-7:40 pm
2 stops19h 25m
$716
ChicagoLondon
ORD - LTN
ORDLTN
Chicago O'Hare Intl
śr. 5/27
9:55 am-12:35 pm
2 stops20h 40m
London Luton
ndz. 5/31
3:15 pm-2:30 pm
2 stops29h 15m
$795
ChicagoLondon
ORD - LTN
ORDLTN
Chicago O'Hare Intl
pon. 4/27
7:25 pm-10:05 pm
2 stops20h 40m
London Luton
sob. 5/2
6:15 pm-4:00 pm
2 stops27h 45m
$815
ChicagoLondon
MDW - LHR
MDWLHR
Chicago Midway
śr. 5/6
7:16 pm-1:05 pm
1 stop11h 49m
London Heathrow
pt. 5/15
8:40 am-5:56 pm
2 stops15h 16m
$872
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
wt. 8/11
5:30 pm-1:15 pm
1 stop13h 45m
London Heathrow
pt. 8/21
9:55 am-8:50 pm
2 stops16h 55m
$874
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
ndz. 5/3
9:59 am-11:20 am
1 stop19h 21m
London Heathrow
wt. 5/12
9:55 am-9:09 pm
2 stops17h 14m
$875
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
ndz. 5/10
1:59 pm-10:30 am
2 stops14h 31m
London Heathrow
pt. 5/22
6:30 am-5:16 pm
2 stops16h 46m
$880
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
wt. 5/5
6:40 pm-9:00 am
Nonstop8h 20m
London Heathrow
pt. 5/22
9:30 am-11:20 am
1 stop31h 50m
$892
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
pon. 5/4
3:40 pm-6:30 am
1 stop32h 50m
London Heathrow
wt. 5/26
6:50 am-12:00 pm
1 stop11h 10m
$893
ChicagoLondon
MDW - LHR
MDWLHR
Chicago Midway
ndz. 5/3
12:52 pm-6:25 am
1 stop11h 33m
London Heathrow
pt. 5/29
8:40 am-6:33 pm
2 stops15h 53m
$903
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.
STL-LHR
ORD-LTN
ORD-LHR
MDW-LHR
ORD-LGW
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
STL-LHR
ORD-LTN
ORD-LHR
MDW-LHR
What is the cheapest month to book a flight from Illinois to United Kingdom?
Currently, October is the cheapest month in which you can book a flight from Illinois to United Kingdom (average of $676). Flying from Illinois to United Kingdom in June is currently the most expensive (average of $1,306). 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 Kwiecień 18, 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 Kwiecień 18, 2026.
The most flights from USIL to GB0 are scheduled on a Monday (58 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (53 on average).
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
Toggle through the tabs below to find thousands of 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 Kwiecień 18, 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 Kwiecień 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$51 | Average$720 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$321 | Average$579 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$345 | Average$892 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$377 | Average$655 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$428 | Average$645 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$467 | Average$658 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$481 | Average$872 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$513 | Average$825 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$522 | Average$809 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$532 | Average$833 | FlexibilityNo cancel fee | On-time70% |