$273+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
Jun 3 — Jun 101
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to United Kingdom with Cheapflights
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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 May 4, 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 May 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 11/26:30 pm
ORD
- GLA
1 stop9h 25m
Multiple Airlines
Wed 11/189:45 am
GLA
- ORD
2 stops37h 35m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$672
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:30 pm
ORD
- GLA
1 stop9h 25m
Multiple Airlines
Mon 11/237:50 am
GLA
- ORD
2 stops15h 30m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$673
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Thu 11/56:30 pm
ORD
- GLA
1 stop9h 25m
Multiple Airlines
Tue 11/109:30 am
GLA
- ORD
2 stops37h 50m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$684
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Tue 10/277:30 pm
ORD
- GLA
1 stop9h 25m
Multiple Airlines
Thu 11/56:00 pm
GLA
- ORD
2 stops29h 20m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$695
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Mon 10/267:30 pm
ORD
- GLA
1 stop9h 25m
Multiple Airlines
Fri 11/67:45 am
GLA
- ORD
2 stops15h 35m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$696
This CrystalTravel deal was found by Cheapflights users on 4/30. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:30 pm
ORD
- GLA
1 stop9h 25m
Icelandair
Wed 11/1811:55 am
GLA
- ORD
1 stop11h 25m
Icelandair
Deal found 4/30![Icelandair logo]()
$703
This Gotogate deal was found by Cheapflights users on 5/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:25 pm
ORD
- GLA
1 stop12h 00m
Icelandair
Wed 10/142:20 pm
GLA
- ORD
1 stop13h 05m
Icelandair
Deal found 5/1![Icelandair logo]()
$704
This Gotogate deal was found by Cheapflights users on 5/3. 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.
Wed 11/116:30 pm
ORD
- GLA
1 stop9h 25m
Icelandair
Mon 11/1611:55 am
GLA
- ORD
1 stop11h 25m
Icelandair
Deal found 5/3![Icelandair logo]()
$705
This Gotogate deal was found by Cheapflights users on 5/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:30 pm
ORD
- GLA
1 stop9h 25m
Icelandair
Tue 11/1011:55 am
GLA
- ORD
1 stop11h 25m
Icelandair
Deal found 5/1![Icelandair logo]()
$706
This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:30 pm
ORD
- GLA
1 stop9h 25m
Icelandair
Fri 11/611:55 am
GLA
- ORD
1 stop11h 25m
Icelandair
Deal found 4/30![Icelandair logo]()
$710
This oojo deal was found by Cheapflights users on 4/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:25 pm
ORD
- GLA
1 stop12h 00m
Icelandair
Mon 10/192:20 pm
GLA
- ORD
1 stop9h 55m
Icelandair
Deal found 4/29![Icelandair logo]()
$711
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 10/287:30 pm
ORD
- GLA
1 stop9h 25m
Multiple Airlines
Sun 11/86:40 pm
GLA
- ORD
2 stops28h 40m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$713
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 May 4, 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 May 4, 2026.
This Delta deal was found by Cheapflights users on 5/3. 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 9/161:30 pm
STL
- LHR
1 stop17h 45m
Delta
Fri 9/256:30 am
LHR
- STL
2 stops16h 25m
Delta
Deal found 5/3![Delta logo]()
$868
This Virgin Atlantic deal was found by Cheapflights users on 5/3. 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 10/289:30 am
ORD
- LGW
2 stops18h 30m
Virgin Atlantic
Wed 11/1110:00 am
LGW
- ORD
1 stop11h 10m
Virgin Atlantic
Deal found 5/3![Virgin Atlantic logo]()
$876
This United Airlines deal was found by Cheapflights users on 5/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/79:40 pm
ORD
- LHR
Nonstop8h 15m
United Airlines
Tue 5/1210:50 am
LHR
- ORD
1 stop13h 25m
United Airlines
Deal found 5/2![United Airlines logo]()
$912
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Sat 7/2510:25 pm
ORD
- LTN
2 stops12h 35m
Multiple Airlines
Sat 8/85:50 pm
LTN
- ORD
1 stop24h 00m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$932
This KLM deal was found by Cheapflights users on 5/3. 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.
Thu 5/74:20 pm
ORD
- GLA
1 stop17h 50m
KLM
Mon 5/111:30 pm
GLA
- ORD
1 stop30h 45m
KLM
Deal found 5/3![KLM logo]()
$935
This Turkish Airlines deal was found by Cheapflights users on 5/1. 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.
Thu 10/2912:50 pm
ORD
- STN
1 stop16h 00m
Turkish Airlines
Fri 11/66:40 am
STN
- ORD
1 stop18h 45m
Turkish Airlines
Deal found 5/1![Turkish Airlines logo]()
$961
This JetBlue deal was found by Cheapflights users on 5/3. 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.
Sun 5/109:49 am
ORD
- LHR
1 stop14h 41m
JetBlue
Wed 6/108:15 am
LHR
- ORD
1 stop12h 29m
JetBlue
Deal found 5/3![JetBlue logo]()
$986
This SWISS deal was found by Cheapflights users on 5/4. 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 7/212:40 pm
ORD
- LGW
1 stop11h 45m
SWISS
Tue 7/289:25 am
LGW
- ORD
1 stop12h 30m
SWISS
Deal found 5/4![SWISS logo]()
$1,106
This Icelandair deal was found by Cheapflights users on 5/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/292:15 pm
ORD
- LGW
2 stops18h 25m
Icelandair
Fri 10/233:40 pm
LGW
- ORD
1 stop32h 35m
Icelandair
Deal found 5/2![Icelandair logo]()
$1,200
This TAP AIR PORTUGAL deal was found by Cheapflights users on 5/2. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:00 pm
ORD
- LGW
2 stops20h 35m
TAP AIR PORTUGAL
Wed 9/304:25 pm
LGW
- ORD
1 stop26h 15m
TAP AIR PORTUGAL
Deal found 5/2![TAP AIR PORTUGAL logo]()
$1,217
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:55 am
STL
- LHR
2 stops14h 15m
Delta
Wed 9/168:40 am
LHR
- STL
2 stops17h 51m
Delta
Deal found 4/30![Delta logo]()
$872
This Virgin Atlantic deal was found by Cheapflights users on 5/2. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:10 am
ORD
- LCY
2 stops15h 40m
Virgin Atlantic
Tue 10/69:20 am
LCY
- ORD
1 stop10h 55m
Virgin Atlantic
Deal found 5/2![Virgin Atlantic logo]()
$894
This Mytrip deal was found by Cheapflights users on 5/1. 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.
Fri 5/293:50 pm
ORD
- LTN
2 stops19h 35m
Multiple Airlines
Fri 6/56:20 am
LTN
- ORD
2 stops19h 05m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$952
This Delta deal was found by Cheapflights users on 5/3. 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 8/1111:00 am
STL
- LHR
2 stops14h 55m
Delta
Fri 8/216:30 am
LHR
- STL
2 stops15h 47m
Delta
Deal found 5/3![Delta logo]()
$873
This KLM deal was found by Cheapflights users on 5/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/94:20 pm
ORD
- LCY
1 stop10h 30m
KLM
Mon 8/1710:00 am
LCY
- ORD
1 stop10h 30m
KLM
Deal found 5/2![KLM logo]()
$979
This Turkish Airlines deal was found by Cheapflights users on 5/3. 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.
Sat 9/58:10 pm
ORD
- STN
1 stop31h 45m
Turkish Airlines
Sat 9/1210:50 am
STN
- ORD
1 stop28h 50m
Turkish Airlines
Deal found 5/3![Turkish Airlines logo]()
$1,001
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Wed 5/132:40 pm
ORD
- GLA
1 stop13h 30m
United Airlines
Sun 5/242:00 pm
GLA
- ORD
1 stop12h 20m
United Airlines
Deal found 5/1![United Airlines logo]()
$1,020
This Virgin Atlantic deal was found by Cheapflights users on 5/3. 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.
Sat 7/251:18 pm
MDW
- LHR
2 stops15h 02m
Virgin Atlantic
Wed 11/116:30 am
LHR
- MDW
2 stops21h 15m
Virgin Atlantic
Deal found 5/3![Virgin Atlantic logo]()
$929
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Mon 9/145:10 pm
ORD
- LTN
1 stop15h 35m
Multiple Airlines
Mon 9/218:25 am
LTN
- ORD
1 stop17h 25m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$987
This KLM deal was found by Cheapflights users on 4/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/101:05 pm
MDW
- LHR
1 stop11h 20m
KLM
Mon 8/1712:25 pm
LHR
- MDW
1 stop11h 40m
KLM
Deal found 4/29![KLM logo]()
$993
This Delta deal was found by Cheapflights users on 4/29. 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.
Fri 5/84:20 pm
ORD
- LHR
1 stop12h 25m
Delta
Tue 5/128:40 am
LHR
- ORD
1 stop11h 35m
Delta
Deal found 4/29![Delta logo]()
$921
This Virgin Atlantic deal was found by Cheapflights users on 5/1. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:00 pm
MDW
- LHR
2 stops16h 10m
Virgin Atlantic
Thu 9/176:30 am
LHR
- MDW
2 stops21h 16m
Virgin Atlantic
Deal found 5/1![Virgin Atlantic logo]()
$932
This United Airlines deal was found by Cheapflights users on 5/3. 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 9/115:32 pm
STL
- LHR
3 stops45h 28m
United Airlines
Mon 9/213:30 pm
LHR
- STL
1 stop27h 55m
United Airlines
Deal found 5/3![United Airlines logo]()
$1,036
This JetBlue deal was found by Cheapflights users on 4/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/13:27 pm
ORD
- EDI
1 stop11h 53m
JetBlue
Tue 6/1612:10 pm
EDI
- ORD
1 stop15h 20m
JetBlue
Deal found 4/29![JetBlue logo]()
$1,176
This SWISS deal was found by Cheapflights users on 5/1. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:05 pm
ORD
- LHR
1 stop16h 45m
SWISS
Tue 6/96:40 pm
LHR
- ORD
1 stop27h 15m
SWISS
Deal found 5/1![SWISS logo]()
$1,183
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Sat 9/59:50 am
ORD
- LTN
3 stops30h 05m
Multiple Airlines
Sat 9/125:50 pm
LTN
- ORD
1 stop24h 00m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$987
This Icelandair deal was found by Cheapflights users on 5/1. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:15 pm
ORD
- LGW
2 stops18h 25m
Icelandair
Sun 9/133:40 pm
LGW
- ORD
1 stop32h 35m
Icelandair
Deal found 5/1![Icelandair logo]()
$1,206
This KLM deal was found by Cheapflights users on 5/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:59 pm
MDW
- LHR
1 stop9h 46m
KLM
Sat 10/3112:30 pm
LHR
- MDW
1 stop14h 15m
KLM
Deal found 5/2![KLM logo]()
$1,003
This Delta deal was found by Cheapflights users on 5/4. 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.
Sat 10/310:45 am
STL
- LHR
2 stops16h 05m
Delta
Thu 10/86:30 am
LHR
- STL
2 stops16h 36m
Delta
Deal found 5/4![Delta logo]()
$923
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/155:00 am
ORD
- LHR
1 stop10h 25m
United Airlines
Fri 5/228:00 am
LHR
- ORD
Nonstop9h 05m
United Airlines
Deal found 4/30![United Airlines logo]()
$1,037
Last-minute flights from Illinois to United KingdomDiscover last-minute flight deals from Illinois to United Kingdom. Data last updated May 4, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to United Kingdom. Data last updated May 4, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 5/1. 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.
Mon 5/258:50 am
ORD
- STN
2 stops23h 50m
Multiple Airlines
Wed 6/106:30 am
STN
- ORD
3 stops32h 30m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$781
This Mytrip deal was found by Cheapflights users on 4/30. 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 5/263:50 pm
ORD
- STN
2 stops24h 50m
Multiple Airlines
Wed 6/38:20 am
STN
- ORD
2 stops34h 45m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$766
This Mytrip deal was found by Cheapflights users on 5/2. 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.
Tue 5/269:55 am
ORD
- STN
3 stops27h 40m
Multiple Airlines
Tue 6/210:00 pm
STN
- ORD
3 stops30h 05m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$772
This Mytrip deal was found by Cheapflights users on 5/2. 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.
Tue 5/269:55 am
ORD
- STN
3 stops27h 40m
Multiple Airlines
Thu 6/42:45 pm
STN
- ORD
2 stops31h 15m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$780
This Mytrip deal was found by Cheapflights users on 5/1. 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 5/279:55 am
ORD
- STN
3 stops19h 40m
Multiple Airlines
Wed 6/106:30 am
STN
- ORD
3 stops32h 30m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$764
This Mytrip deal was found by Cheapflights users on 4/30. 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.
Wed 5/279:55 am
ORD
- STN
2 stops28h 35m
Multiple Airlines
Wed 6/34:25 pm
STN
- ORD
2 stops26h 40m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$767
This Mytrip deal was found by Cheapflights users on 5/3. 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 5/279:55 am
ORD
- LTN
3 stops23h 30m
Multiple Airlines
Wed 6/36:15 am
LTN
- ORD
3 stops32h 45m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$771
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 5/285:30 pm
ORD
- EDI
1 stop34h 20m
Multiple Airlines
Thu 6/45:30 pm
EDI
- ORD
2 stops28h 30m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$749
This Mytrip deal was found by Cheapflights users on 5/3. 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 6/54:37 pm
ORD
- STN
2 stops24h 43m
Multiple Airlines
Tue 6/1610:00 pm
STN
- ORD
3 stops27h 25m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$777
This Mytrip deal was found by Cheapflights users on 5/1. 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 6/98:50 am
ORD
- LGW
3 stops21h 30m
Multiple Airlines
Tue 6/168:35 pm
LGW
- ORD
3 stops28h 50m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$764
This Mytrip deal was found by Cheapflights users on 5/3. 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 6/169:55 am
ORD
- LTN
3 stops21h 30m
Multiple Airlines
Wed 11/117:45 am
LTN
- ORD
2 stops15h 35m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$767
This Mytrip deal was found by Cheapflights users on 5/2. 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.
Tue 6/169:55 am
ORD
- LGW
3 stops29h 20m
Multiple Airlines
Mon 6/229:30 pm
LGW
- ORD
3 stops30h 35m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$773
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 May 4, 2026.
Search for one-way flight options from Illinois to United Kingdom. Find affordable one-way fares based on user searches. Data last updated May 4, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:30 pm
ORD
- GLA
1 stop9h 25m
Icelandair
Deal found 4/30![Icelandair logo]()
$273
This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:25 pm
ORD
- GLA
1 stop12h 00m
Icelandair
Deal found 4/30![Icelandair logo]()
$275
This Cheapflightsfares deal was found by Cheapflights users on 5/3. 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.
Sun 7/2610:25 pm
ORD
- GLA
1 stop9h 00m
Icelandair
Deal found 5/3![Icelandair logo]()
$280
This Trip.com deal was found by Cheapflights users on 5/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/39:55 am
ORD
- GLA
1 stop17h 45m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 5/285:30 pm
ORD
- EDI
1 stop34h 20m
WestJet
Deal found 5/3![WestJet logo]()
$307
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:12 pm
STL
- LHR
1 stop11h 58m
British Airways
Deal found 4/30![British Airways logo]()
$320
This oojo deal was found by Cheapflights users on 5/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:25 pm
ORD
- GLA
2 stops19h 15m
British Airways
Deal found 5/1![British Airways logo]()
$322
This Cheapflightsfares deal was found by Cheapflights users on 5/3. 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.
Mon 9/215:00 pm
ORD
- GLA
1 stop11h 05m
British Airways
Deal found 5/3![British Airways logo]()
$323
This Cheapflightsfares deal was found by Cheapflights users on 5/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:35 pm
STL
- LHR
Nonstop8h 00m
British Airways
Deal found 5/2![British Airways logo]()
$326
This Delta deal was found by Cheapflights users on 4/29. 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 8/410:51 am
STL
- LHR
2 stops14h 19m
Delta
Deal found 4/29![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 4/29. 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 8/46:04 pm
STL
- LGW
2 stops15h 56m
Delta
Deal found 4/29![Delta logo]()
$335
This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/41:09 pm
STL
- LHR
2 stops15h 26m
Iberia
Deal found 4/29![Iberia logo]()
$337
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 May 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $695 (Kiwi.com) |
One-way from | $280 (Cheapflightsfares) |
Popular in | June |
Cheapest in | February |
Average price | $874 |
Good round-trip deal | $958 or less |
Good one-way deal | $508 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 May 4, 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
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Wed 9/16
1:30 pm-1:15 pm
1 stop17h 45m
London Heathrow
Fri 9/25
6:30 am-4:55 pm
2 stops16h 25m
$868
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Tue 9/8
10:55 am-7:10 am
2 stops14h 15m
London Heathrow
Wed 9/16
8:40 am-8:31 pm
2 stops17h 51m
$872
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Tue 8/11
11:00 am-7:55 am
2 stops14h 55m
London Heathrow
Fri 8/21
6:30 am-4:17 pm
2 stops15h 47m
$873
ChicagoLondon
ORD - LGW
ORDLGW
Chicago O'Hare Intl
Wed 10/28
9:30 am-9:00 am
2 stops18h 30m
London Gatwick
Wed 11/11
10:00 am-3:10 pm
1 stop11h 10m
$876
ChicagoLondon
ORD - LCY
ORDLCY
Chicago O'Hare Intl
Tue 9/22
11:10 am-8:50 am
2 stops15h 40m
London City
Tue 10/6
9:20 am-2:15 pm
1 stop10h 55m
$894
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Thu 5/7
9:40 pm-11:55 am
Nonstop8h 15m
London Heathrow
Tue 5/12
10:50 am-6:15 pm
1 stop13h 25m
$912
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Fri 5/8
4:20 pm-10:45 am
1 stop12h 25m
London Heathrow
Tue 5/12
8:40 am-2:15 pm
1 stop11h 35m
$921
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Sat 10/3
10:45 am-8:50 am
2 stops16h 05m
London Heathrow
Thu 10/8
6:30 am-5:06 pm
2 stops16h 36m
$923
ChicagoLondon
MDW - LHR
MDWLHR
Chicago Midway
Sat 7/25
1:18 pm-10:20 am
2 stops15h 02m
London Heathrow
Wed 11/11
6:30 am-9:45 pm
2 stops21h 15m
$929
ChicagoLondon
ORD - LTN
ORDLTN
Chicago O'Hare Intl
Sat 7/25
10:25 pm-5:00 pm
2 stops12h 35m
London Luton
Sat 8/8
5:50 pm-11:50 am
1 stop24h 00m
$932
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-LGW
ORD-LHR
ORD-LTN
ORD-GLA
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-LGW
ORD-LHR
ORD-LTN
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.
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 May 4, 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 May 4, 2026.
The most flights from USIL to GB0 are scheduled on a Sunday (58 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (49 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 May 4, 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 May 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$51 | Average$807 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$321 | Average$687 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$345 | Average$864 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$377 | Average$657 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$428 | Average$645 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$465 | Average$668 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$481 | Average$896 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$513 | Average$831 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$522 | Average$677 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$530 | Average$842 | FlexibilityNo cancel fee | On-time70% |