$465+ Cheap flights from London (LON) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ORD
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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Find cheap flights from London to Illinois with Cheapflights
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Cheapest flights from London to IllinoisExplore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
Explore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:40 am -
1 stop12h 30m
Mon 11/99:50 pm -
Nonstop8h 10m
Deal found 9/13![Lufthansa logo]()
$711
This Cheapflightsfares deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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.
Sat 10/318:30 am -
1 stop12h 50m
Wed 11/49:50 pm -
Nonstop8h 10m
Deal found 9/12![Lufthansa logo]()
$712
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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.
Thu 11/54:00 pm -
1 stop29h 30m
Wed 11/117:00 pm -
2 stops43h 35m
Deal found 9/12![TAP AIR PORTUGAL logo]()
$713
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
1 stop12h 35m
Sun 10/117:05 pm -
1 stop16h 45m
Deal found 9/13![SWISS logo]()
$713
This Icelandair deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:25 pm -
1 stop26h 50m
Fri 10/167:25 pm -
1 stop10h 30m
Deal found 9/12![Icelandair logo]()
$714
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Sat 11/146:30 am -
2 stops17h 50m
Sat 11/213:55 pm -
2 stops19h 40m
Deal found 9/13![Multiple Airlines logo]()
$714
This Mytrip deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 11/21:30 pm -
2 stops33h 15m
Mon 11/167:15 pm -
2 stops20h 10m
Deal found 9/12![Multiple Airlines logo]()
$714
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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.
Wed 10/287:40 am -
Nonstop9h 05m
Mon 11/99:50 pm -
Nonstop8h 10m
Deal found 9/14![Lufthansa logo]()
$715
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Thu 10/15:40 am -
2 stops19h 35m
Thu 10/153:45 pm -
2 stops20h 20m
Deal found 9/13![Multiple Airlines logo]()
$715
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Wed 9/236:30 am -
1 stop13h 30m
Wed 10/73:45 pm -
1 stop13h 50m
Deal found 9/14![Multiple Airlines logo]()
$715
This Gotogate deal was found by Cheapflights users on 9/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:15 am -
1 stop13h 00m
Mon 11/166:50 pm -
1 stop12h 00m
Deal found 9/13![SWISS logo]()
$716
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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.
Fri 11/277:30 am -
1 stop13h 50m
Thu 12/32:35 pm -
1 stop13h 05m
Deal found 9/14![Lufthansa logo]()
$716
Best flights from London to IllinoisDiscover carefully curated flight deals from London to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from London to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 11/69:35 pm -
2 stops47h 55m
Sun 11/158:10 pm -
1 stop13h 35m
Deal found 9/12![TAP AIR PORTUGAL logo]()
$717
This Austrian Airlines deal was found by Cheapflights users on 9/14. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/229:05 am -
1 stop34h 55m
Thu 12/33:45 pm -
Nonstop8h 10m
Deal found 9/14![Austrian Airlines logo]()
$728
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Mon 10/266:10 am -
1 stop14h 00m
Sat 10/314:55 pm -
1 stop10h 10m
Deal found 9/16![Multiple Airlines logo]()
$728
This British Airways deal was found by Cheapflights users on 9/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1712:10 pm -
1 stop13h 05m
Fri 1/296:50 pm -
Nonstop7h 45m
Deal found 9/16![British Airways logo]()
$732
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 1/289:00 am -
1 stop13h 15m
Sun 1/315:45 pm -
Nonstop8h 10m
Deal found 9/16![United Airlines logo]()
$745
This Icelandair deal was found by Cheapflights users on 9/14. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:15 pm -
1 stop11h 05m
Fri 12/46:30 pm -
1 stop10h 20m
Deal found 9/14![Icelandair logo]()
$747
This Scandinavian Airlines deal was found by Cheapflights users on 9/16. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/286:40 am -
1 stop16h 05m
Sun 1/317:15 pm -
2 stops17h 35m
Deal found 9/16![Scandinavian Airlines logo]()
$754
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:30 am -
2 stops16h 09m
Tue 12/111:28 am -
1 stop14h 22m
Deal found 9/15![Delta logo]()
$788
This Virgin Atlantic deal was found by Cheapflights users on 9/16. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:20 am -
2 stops17h 40m
Mon 11/1610:34 am -
2 stops15h 11m
Deal found 9/16![Virgin Atlantic logo]()
$794
This SWISS deal was found by Cheapflights users on 9/16. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:00 am -
2 stops15h 15m
Mon 11/164:10 pm -
2 stops15h 30m
Deal found 9/16![SWISS logo]()
$796
This Lufthansa deal was found by Cheapflights users on 9/15. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:30 am -
1 stop13h 15m
Sun 11/16:50 pm -
1 stop11h 10m
Deal found 9/15![Lufthansa logo]()
$867
This Turkish Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:55 am -
1 stop38h 25m
Mon 11/168:15 pm -
1 stop31h 40m
Deal found 9/12![Turkish Airlines logo]()
$905
This Gotogate deal was found by Cheapflights users on 9/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:45 am -
2 stops15h 56m
Sat 10/314:05 pm -
1 stop33h 25m
Deal found 9/16![Air Canada logo]()
$936
This ChecknFly deal was found by Cheapflights users on 9/14. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:35 am -
2 stops18h 39m
Wed 10/2112:47 pm -
2 stops38h 23m
Deal found 9/14![Iberia logo]()
$1,079
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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.
Sat 11/76:35 am -
1 stop13h 35m
Sun 11/155:45 pm -
Nonstop8h 10m
Deal found 9/12![United Airlines logo]()
$746
This Connections by easyJet deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:55 pm -
1 stop31h 25m
Fri 11/276:30 pm -
1 stop13h 25m
Deal found 9/12![Multiple Airlines logo]()
$751
This British Airways deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 12/26:50 am -
1 stop13h 20m
Tue 12/88:05 pm -
1 stop10h 35m
Deal found 9/12![British Airways logo]()
$758
This Virgin Atlantic deal was found by Cheapflights users on 9/13. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:00 am -
1 stop12h 15m
Mon 11/167:05 am -
2 stops19h 55m
Deal found 9/13![Virgin Atlantic logo]()
$806
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/14. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/244:35 pm -
1 stop28h 55m
Wed 12/27:00 pm -
1 stop14h 05m
Deal found 9/14![TAP AIR PORTUGAL logo]()
$808
This Delta deal was found by Cheapflights users on 9/14. 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.
Sun 11/19:50 am -
1 stop12h 57m
Sun 11/89:29 am -
1 stop16h 16m
Deal found 9/14![Delta logo]()
$809
This British Airways deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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.
Sat 11/77:45 am -
1 stop12h 25m
Sun 11/158:05 pm -
1 stop10h 35m
Deal found 9/12![British Airways logo]()
$758
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Mon 11/27:20 am -
2 stops17h 05m
Mon 11/166:50 pm -
2 stops20h 10m
Deal found 9/13![Multiple Airlines logo]()
$759
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Thu 10/297:40 am -
Nonstop9h 05m
Thu 11/59:50 pm -
Nonstop8h 10m
Deal found 9/14![United Airlines logo]()
$771
This SWISS deal was found by Cheapflights users on 9/13. 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.
Tue 11/247:05 pm -
1 stop23h 35m
Mon 1/256:30 pm -
2 stops16h 35m
Deal found 9/13![SWISS logo]()
$855
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:15 pm -
1 stop25h 30m
Sun 11/223:40 pm -
1 stop11h 35m
Deal found 9/15![Lufthansa logo]()
$867
This Scandinavian Airlines deal was found by Cheapflights users on 9/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:40 am -
2 stops20h 43m
Tue 10/202:25 pm -
2 stops19h 35m
Deal found 9/14![Scandinavian Airlines logo]()
$877
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/14. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:35 pm -
1 stop28h 55m
Fri 12/48:10 pm -
1 stop13h 35m
Deal found 9/14![TAP AIR PORTUGAL logo]()
$808
This Virgin Atlantic deal was found by Cheapflights users on 9/13. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/254:45 pm -
2 stops22h 39m
Tue 3/95:55 pm -
2 stops15h 50m
Deal found 9/13![Virgin Atlantic logo]()
$821
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sun 10/48:00 am -
Nonstop9h 10m
Sat 10/106:05 pm -
Nonstop8h 25m
Deal found 9/15![United Airlines logo]()
$778
This Turkish Airlines deal was found by Cheapflights users on 9/15. 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.
Sun 2/285:20 pm -
1 stop22h 40m
Thu 3/411:45 am -
1 stop16h 10m
Deal found 9/15![Turkish Airlines logo]()
$946
Last-minute flights from London to IllinoisDiscover last-minute flight deals from London to Illinois. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from London to Illinois. Data last updated September 17, 2026 and is based on user searches.
This TravelUp deal was found by Cheapflights users on 9/13. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:00 am -
1 stop12h 35m
Thu 10/14:25 pm -
Nonstop8h 20m
Deal found 9/13![Multiple Airlines logo]()
$717
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Wed 9/236:30 am -
1 stop13h 30m
Wed 10/73:45 pm -
1 stop13h 50m
Deal found 9/14![Multiple Airlines logo]()
$715
This Gotogate deal was found by Cheapflights users on 9/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:40 am -
1 stop13h 15m
Thu 10/12:20 pm -
1 stop11h 35m
Deal found 9/13![SWISS logo]()
$718
This Icelandair deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:40 pm -
1 stop32h 35m
Sun 10/1810:25 pm -
1 stop10h 15m
Deal found 9/12![Icelandair logo]()
$713
This Icelandair deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:25 pm -
1 stop26h 50m
Sun 10/187:25 pm -
1 stop10h 30m
Deal found 9/12![Icelandair logo]()
$714
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
1 stop12h 35m
Sun 10/117:05 pm -
1 stop16h 45m
Deal found 9/13![SWISS logo]()
$713
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Thu 10/15:40 am -
2 stops19h 35m
Thu 10/153:45 pm -
2 stops20h 20m
Deal found 9/13![Multiple Airlines logo]()
$715
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 10/19:25 pm -
1 stop26h 50m
Fri 10/167:25 pm -
1 stop10h 30m
Deal found 9/12![Icelandair logo]()
$716
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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.
Wed 10/287:40 am -
Nonstop9h 05m
Mon 11/99:50 pm -
Nonstop8h 10m
Deal found 9/14![Lufthansa logo]()
$715
This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:00 am -
1 stop14h 00m
Thu 11/59:50 pm -
Nonstop8h 10m
Deal found 9/14![Austrian Airlines logo]()
$711
This Cheapflightsfares deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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.
Thu 10/298:50 am -
1 stop11h 20m
Sat 11/148:30 pm -
Nonstop7h 55m
Deal found 9/12![British Airways logo]()
$719
This Cheapflightsfares deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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.
Sat 10/318:30 am -
1 stop12h 50m
Wed 11/49:50 pm -
Nonstop8h 10m
Deal found 9/12![Lufthansa logo]()
$712
One-way flights from London to IllinoisSearch for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Mon 11/166:50 pm -
2 stops26h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$465
This SWISS deal was found by Cheapflights users on 9/15. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:40 pm -
1 stop27h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![SWISS logo]()
$466
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:35 am -
1 stop13h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![SWISS logo]()
$467
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sat 11/149:55 am -
2 stops35h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$467
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Wed 10/1410:45 am -
2 stops37h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$467
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Mon 11/25:40 pm -
3 stops51h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$468
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 11/249:55 am -
2 stops35h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$468
This SWISS deal was found by Cheapflights users on 9/14. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:40 pm -
1 stop27h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![SWISS logo]()
$469
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sun 11/13:05 pm -
3 stops29h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$469
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Fri 11/139:15 pm -
3 stops27h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$469
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Mon 11/161:30 pm -
1 stop32h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![SWISS logo]()
$470
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:00 am -
1 stop13h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![SWISS logo]()
$470
Find flight deals from London to Illinois
Keep the following information in mind while searching for London to Illinois flight deals. Data was last updated September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $711 (Cheapflightsfares) |
One-way from | $465 (Kiwi.com) |
Popular in | August |
Cheapest in | February |
Average price | $815 |
Good round-trip deal | $874 or less |
Good one-way deal | $684 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from London to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 17, 2026.
Use the filters below to find and compare flights from London to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LondonChicago
STN London Stansted - ORD Chicago O'Hare Intl
STNORD
London Stansted
Sun 1/31
6:30 pm-2:55 pm
3 stops26h 25m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$469
LondonChicago
LTN London Luton - ORD Chicago O'Hare Intl
LTNORD
London Luton
Sun 1/31
7:45 am-2:55 pm
1 stop37h 10m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$474
LondonChicago
STN London Stansted - ORD Chicago O'Hare Intl
STNORD
London Stansted
Sun 11/29
8:45 pm-5:20 pm
3 stops50h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$474
LondonChicago
LTN London Luton - ORD Chicago O'Hare Intl
LTNORD
London Luton
Sun 1/10
8:40 am-5:20 pm
2 stops14h 40m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$498
LondonChicago
STN London Stansted - ORD Chicago O'Hare Intl
STNORD
London Stansted
Thu 11/19
6:20 am-2:55 pm
1 stop14h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$498
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Fri 11/13
2:50 pm-2:00 pm
1 stop29h 10m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$510
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 11/12
7:25 pm-2:00 pm
1 stop24h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$510
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sat 3/13
6:30 am-1:10 pm
1 stop12h 40m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$526
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Mon 11/9
6:50 am-6:31 pm
2 stops17h 41m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$533
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sun 11/29
9:30 am-1:10 pm
1 stop33h 40m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$544
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from London to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from London with our price prediction graph.
LHR-ORD
LGW-ORD
STN-ORD
LTN-ORD
LCY-ORD
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 London to Illinois
LON-USIL
LHR-ORD
LGW-ORD
STN-ORD
LTN-ORD
What is the cheapest month to book a flight from London to Illinois?
Currently, February is the cheapest month in which you can book a flight from London to Illinois (average of $645). Flying from London to Illinois in August is currently the most expensive (average of $1,066). 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 LON to IL?
Find hourly flight availability from London to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2026.
When flying from London to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from London to Illinois
Explore weekly flight availability from London to Illinois. 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 September 17, 2026.
The most flights from LON to USIL are scheduled on a Wednesday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (39 on average).
How much does it cost to fly round-trip from London to Illinois?
Airfare is below average for this route at the moment.
London to Illinois flights typically cost between $741 and $984 in November.The cheapest round-trip price found within the last 5 days was $711 on Lufthansa (Nov 5-Nov 9).
How far ahead should I book a flight from London to Illinois?
Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated September 17, 2026.
See what other customers who have flown with United Airlines,American Airlines, andIcelandair from London to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
Find useful and relevant information for your journey from London to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for London to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from London to Illinois by cabin class
Find flights from London to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
London and Illinois flights
Browse other London and Illinois flight options. Last updated on September 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
London to Illinois flights
Consider these flights traveling from London to Illinois.
Top 7 airlines flying from London to Illinois
Discover the top 7 airlines that operate flights from London to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$421 | Average$662 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$530 | Average$931 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$572 | Average$1,132 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$576 | Average$887 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$583 | Average$945 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$703 | Average$850 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$806 | Average$895 | FlexibilityNo cancel fee | On-timeN/A |