$317+ Cheap flights from Illinois to London (LON)
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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
Nov 19 — Nov 261
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Illinois to LondonExplore the most affordable flight options available from Illinois to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 20, 2026.
Explore the most affordable flight options available from Illinois to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 20, 2026.
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Sun 11/86:30 pm -
1 stop14h 35m
Thu 11/196:05 am -
1 stop17h 15m
Deal found 10/16![Multiple Airlines logo]()
$703
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Wed 11/187:00 pm -
2 stops22h 45m
Tue 11/2410:25 am -
2 stops35h 05m
Deal found 10/15![Multiple Airlines logo]()
$703
This Mytrip deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 12/36:30 pm -
2 stops22h 35m
Thu 12/106:15 am -
2 stops17h 05m
Deal found 10/19![Multiple Airlines logo]()
$704
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
Sun 12/63:55 pm -
1 stop11h 20m
Fri 12/119:40 am -
1 stop14h 40m
Deal found 10/15![Multiple Airlines logo]()
$704
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Sun 11/88:05 pm -
1 stop18h 00m
Thu 11/197:50 pm -
2 stops25h 40m
Deal found 10/16![Multiple Airlines logo]()
$704
This Kiwi.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/278:10 pm -
1 stop21h 45m
Sat 12/56:30 pm -
2 stops27h 00m
Deal found 10/19![Multiple Airlines logo]()
$705
This Kiwi.com deal was found by Cheapflights users on 10/17. 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.
Sun 12/66:30 pm -
1 stop14h 35m
Tue 12/157:00 am -
1 stop16h 20m
Deal found 10/17![Multiple Airlines logo]()
$706
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Sun 11/153:55 pm -
1 stop11h 20m
Tue 11/246:20 am -
2 stops39h 10m
Deal found 10/16![Multiple Airlines logo]()
$706
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/158:10 pm -
1 stop21h 40m
Tue 11/241:25 pm -
2 stops32h 05m
Deal found 10/20![Multiple Airlines logo]()
$706
This Booking.com deal was found by Cheapflights users on 10/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:30 pm -
2 stops17h 30m
Mon 11/166:10 am -
2 stops17h 10m
Deal found 10/16![Multiple Airlines logo]()
$707
This deal was found by Cheapflights users on 10/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:30 pm -
1 stop10h 25m
Sun 11/2211:55 am -
1 stop11h 25m
Deal found 10/17![Icelandair logo]()
$707
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Fri 11/136:30 pm -
2 stops16h 35m
Mon 11/1610:35 pm -
2 stops24h 45m
Deal found 10/15![Multiple Airlines logo]()
$707
Best flights from Illinois to LondonDiscover carefully curated flight deals from Illinois to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.
Discover carefully curated flight deals from Illinois to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/17. 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.
Mon 12/76:30 pm -
1 stop13h 35m
Sat 12/127:00 am -
1 stop16h 20m
Deal found 10/17![Multiple Airlines logo]()
$715
This Scandinavian Airlines deal was found by Cheapflights users on 10/18. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:10 pm -
1 stop14h 50m
Fri 12/47:50 pm -
2 stops26h 55m
Deal found 10/18![Scandinavian Airlines logo]()
$781
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Mon 3/110:35 am -
1 stop19h 25m
Wed 3/39:00 am -
2 stops18h 24m
Deal found 10/15![United Airlines logo]()
$796
This Turkish Airlines deal was found by Cheapflights users on 10/16. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/248:15 pm -
1 stop31h 40m
Tue 3/25:20 pm -
1 stop22h 40m
Deal found 10/16![Turkish Airlines logo]()
$831
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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.
Wed 1/137:00 pm -
1 stop32h 50m
Fri 1/159:35 pm -
2 stops47h 55m
Deal found 10/19![TAP AIR PORTUGAL logo]()
$847
This Delta deal was found by Cheapflights users on 10/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/155:55 am -
1 stop22h 05m
Tue 3/2311:45 am -
2 stops27h 41m
Deal found 10/18![Delta logo]()
$885
This Virgin Atlantic deal was found by Cheapflights users on 10/15. 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.
Wed 3/1712:00 pm -
1 stop14h 50m
Tue 3/236:20 am -
2 stops21h 03m
Deal found 10/15![Virgin Atlantic logo]()
$891
This SWISS deal was found by Cheapflights users on 10/16. 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.
Sun 3/287:05 pm -
1 stop11h 55m
Wed 4/217:00 am -
2 stops14h 55m
Deal found 10/16![SWISS logo]()
$901
This Expedia deal was found by Cheapflights users on 10/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/173:10 pm -
1 stop14h 15m
Tue 3/233:40 pm -
1 stop13h 59m
Deal found 10/15![British Airways logo]()
$928
This JetBlue deal was found by Cheapflights users on 10/17. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/121:00 pm -
1 stop11h 55m
Sun 11/159:20 am -
1 stop15h 57m
Deal found 10/17![JetBlue logo]()
$932
This Finnair deal was found by Cheapflights users on 10/15. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/266:10 pm -
Nonstop7h 45m
Mon 4/510:20 am -
1 stop13h 30m
Deal found 10/15![Finnair logo]()
$948
This American Airlines deal was found by Cheapflights users on 10/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/173:10 pm -
1 stop15h 25m
Tue 3/233:40 pm -
1 stop13h 59m
Deal found 10/17![American Airlines logo]()
$956
This Expedia deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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.
Fri 2/1212:10 pm -
1 stop16h 15m
Fri 2/194:30 pm -
1 stop31h 52m
Deal found 10/19![Iberia logo]()
$977
This KLM deal was found by Cheapflights users on 10/17. 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.
Wed 11/1112:06 pm -
1 stop13h 44m
Wed 11/188:55 am -
1 stop19h 36m
Deal found 10/17![KLM logo]()
$991
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Tue 11/38:05 pm -
1 stop17h 55m
Thu 12/108:20 am -
2 stops15h 00m
Deal found 10/16![Multiple Airlines logo]()
$719
This Kiwi.com deal was found by Cheapflights users on 10/17. 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.
Sun 12/66:30 pm -
1 stop14h 35m
Fri 12/116:00 am -
1 stop17h 20m
Deal found 10/17![Multiple Airlines logo]()
$724
This Turkish Airlines deal was found by Cheapflights users on 10/15. 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.
Tue 1/128:15 pm -
1 stop20h 20m
Thu 1/215:25 pm -
1 stop22h 35m
Deal found 10/15![Turkish Airlines logo]()
$839
This Scandinavian Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:10 pm -
1 stop14h 50m
Sat 12/126:40 am -
1 stop16h 05m
Deal found 10/19![Scandinavian Airlines logo]()
$845
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 3/1611:00 am -
1 stop19h 40m
Wed 3/2411:45 am -
2 stops27h 41m
Deal found 10/19![Delta logo]()
$885
This Mytrip deal was found by Cheapflights users on 10/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/266:30 pm -
2 stops20h 35m
Sat 12/59:45 pm -
2 stops25h 35m
Deal found 10/18![Multiple Airlines logo]()
$737
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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.
Wed 1/137:00 pm -
1 stop14h 05m
Mon 1/189:35 pm -
2 stops47h 55m
Deal found 10/19![TAP AIR PORTUGAL logo]()
$895
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2310:56 am -
1 stop15h 59m
Tue 3/308:45 am -
2 stops20h 13m
Deal found 10/19![United Airlines logo]()
$923
This British Airways deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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.
Tue 3/233:10 pm -
1 stop14h 15m
Tue 3/307:50 am -
2 stops22h 49m
Deal found 10/19![British Airways logo]()
$945
This Turkish Airlines deal was found by Cheapflights users on 10/18. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:45 pm -
1 stop21h 35m
Tue 11/105:20 pm -
1 stop22h 40m
Deal found 10/18![Turkish Airlines logo]()
$862
This Virgin Atlantic deal was found by Cheapflights users on 10/16. 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.
Wed 11/254:25 pm -
1 stop9h 45m
Wed 12/210:00 am -
2 stops16h 53m
Deal found 10/16![Virgin Atlantic logo]()
$980
This Delta deal was found by Cheapflights users on 10/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1712:00 pm -
1 stop14h 50m
Tue 3/236:20 am -
2 stops21h 03m
Deal found 10/17![Delta logo]()
$892
This Mytrip deal was found by Cheapflights users on 10/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:30 pm -
1 stop12h 30m
Wed 12/168:00 am -
1 stop15h 20m
Deal found 10/18![Multiple Airlines logo]()
$739
This American Airlines deal was found by Cheapflights users on 10/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:53 am -
1 stop19h 02m
Tue 12/84:30 pm -
1 stop24h 58m
Deal found 10/17![American Airlines logo]()
$1,013
This Expedia deal was found by Cheapflights users on 10/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:14 pm -
1 stop15h 46m
Tue 12/811:00 am -
1 stop13h 30m
Deal found 10/18![Iberia logo]()
$1,013
This KLM deal was found by Cheapflights users on 10/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/54:25 pm -
1 stop9h 45m
Wed 11/119:20 am -
1 stop11h 05m
Deal found 10/18![KLM logo]()
$1,025
Last-minute flights from Illinois to LondonDiscover last-minute flight deals from Illinois to London. Data last updated October 20, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to London. Data last updated October 20, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Wed 11/47:00 pm -
2 stops17h 40m
Thu 11/121:05 pm -
2 stops32h 25m
Deal found 10/15![Multiple Airlines logo]()
$709
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Sun 11/86:30 pm -
1 stop14h 35m
Thu 11/196:05 am -
1 stop17h 15m
Deal found 10/16![Multiple Airlines logo]()
$703
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Sun 11/88:05 pm -
1 stop18h 00m
Thu 11/197:50 pm -
2 stops25h 40m
Deal found 10/16![Multiple Airlines logo]()
$704
This Booking.com deal was found by Cheapflights users on 10/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:30 pm -
2 stops17h 30m
Mon 11/166:10 am -
2 stops17h 10m
Deal found 10/16![Multiple Airlines logo]()
$707
This Booking.com deal was found by Cheapflights users on 10/15. 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.
Thu 11/126:30 pm -
2 stops14h 00m
Thu 11/198:50 am -
2 stops14h 30m
Deal found 10/15![Multiple Airlines logo]()
$708
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Fri 11/136:30 pm -
2 stops16h 35m
Mon 11/1610:35 pm -
2 stops24h 45m
Deal found 10/15![Multiple Airlines logo]()
$707
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Sun 11/153:55 pm -
1 stop11h 20m
Tue 11/246:20 am -
2 stops39h 10m
Deal found 10/16![Multiple Airlines logo]()
$706
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/158:10 pm -
1 stop21h 40m
Tue 11/241:25 pm -
2 stops32h 05m
Deal found 10/20![Multiple Airlines logo]()
$706
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Wed 11/187:00 pm -
2 stops22h 45m
Tue 11/2410:25 am -
2 stops35h 05m
Deal found 10/15![Multiple Airlines logo]()
$703
This deal was found by Cheapflights users on 10/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:30 pm -
1 stop10h 25m
Sun 11/2211:55 am -
1 stop11h 25m
Deal found 10/17![Icelandair logo]()
$707
This Kiwi.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/278:10 pm -
1 stop21h 45m
Sat 12/56:30 pm -
2 stops27h 00m
Deal found 10/19![Multiple Airlines logo]()
$705
This Mytrip deal was found by Cheapflights users on 10/15. 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.
Sun 11/296:30 pm -
2 stops21h 40m
Sun 12/68:40 am -
2 stops14h 40m
Deal found 10/15![Multiple Airlines logo]()
$710
One-way flights from Illinois to LondonSearch for one-way flight options from Illinois to London. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.
Search for one-way flight options from Illinois to London. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/257:00 pm -
2 stops32h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$317
This Mytrip deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 1/266:50 pm -
1 stop16h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![SWISS logo]()
$318
This Trip.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/187:00 pm -
1 stop14h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![TAP AIR PORTUGAL logo]()
$318
This Justfly.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/179:50 am -
2 stops15h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Virgin Atlantic logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/117:00 pm -
1 stop14h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![TAP AIR PORTUGAL logo]()
$319
This Cheapflightsfares deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 1/266:50 pm -
1 stop17h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![SWISS logo]()
$321
This Cheapflightsfares deal was found by Cheapflights users on 10/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/35:10 pm -
Nonstop7h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![British Airways logo]()
$322
This Mytrip deal was found by Cheapflights users on 10/16. 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 11/163:55 pm -
1 stop12h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Multiple Airlines logo]()
$322
This Justfly.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/228:10 pm -
1 stop13h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![TAP AIR PORTUGAL logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/298:10 pm -
3 stops43h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$322
This Yatra.com deal was found by Cheapflights users on 10/17. 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 Yatra.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/146:50 pm -
Nonstop7h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![British Airways logo]()
$323
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Tue 1/59:00 pm -
1 stop17h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Multiple Airlines logo]()
$323
Find flight deals from Illinois to London
Keep the following information in mind while searching for Illinois to London flight deals. Data was last updated October 20, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $703 (Mytrip) |
One-way from | $317 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $888 |
Good round-trip deal | $822 or less |
Good one-way deal | $388 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to London 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 October 20, 2026.
Use the filters below to find and compare flights from Illinois to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BloomingtonLondon
BMI Bloomington-Normal - LHR London Heathrow
BMILHR
Bloomington-Normal
Mon 3/22
12:00 pm-9:00 am
1 stop16h 00m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$334
BloomingtonLondon
BMI Bloomington-Normal - LHR London Heathrow
BMILHR
Bloomington-Normal
Mon 3/22
4:00 pm-10:30 am
2 stops13h 30m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$334
BloomingtonLondon
BMI Bloomington-Normal - LHR London Heathrow
BMILHR
Bloomington-Normal
Mon 3/22
4:00 pm-12:35 pm
2 stops15h 35m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$334
BloomingtonLondon
BMI Bloomington-Normal - LHR London Heathrow
BMILHR
Bloomington-Normal
Mon 2/1
12:00 pm-10:30 am
2 stops16h 30m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$334
ChicagoLondon
ORD Chicago O'Hare Intl - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Mon 3/8
12:15 pm-3:45 pm
2 stops21h 30m
London Gatwick
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$334
ChicagoLondon
ORD Chicago O'Hare Intl - LCY London City
ORDLCY
Chicago O'Hare Intl
Mon 3/1
9:30 am-8:10 am
2 stops16h 40m
London City
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$345
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Wed 12/30
8:05 pm-9:00 pm
1 stop18h 55m
London Luton
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$346
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Sun 2/28
6:30 pm-9:05 pm
3 stops20h 35m
London Luton
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$353
ChampaignLondon
CMI Champaign University-Willard - LHR London Heathrow
CMILHR
Champaign University-Willard
Mon 3/22
12:10 pm-6:55 am
1 stop13h 45m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$354
BloomingtonLondon
BMI Bloomington-Normal - LHR London Heathrow
BMILHR
Bloomington-Normal
Mon 3/22
3:46 pm-6:55 am
1 stop10h 09m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$354
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to London
Have a flexible travel schedule? Discover the best time to fly to London from Illinois with our price prediction graph.
BMI-LHR
ORD-LTN
CMI-LHR
ORD-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 London
USIL-LON
BMI-LHR
ORD-LTN
CMI-LHR
ORD-LHR
What is the cheapest month to book a flight from Illinois to London?
Currently, January is the cheapest month in which you can book a flight from Illinois to London (average of $624). Flying from Illinois to London in June is currently the most expensive (average of $1,382). 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 LON?
Find hourly flight availability from Illinois to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 20, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to London as you normally would.
Weekly flight availability from Illinois to London
Explore weekly flight availability from Illinois to London. 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 October 20, 2026.
The most flights from USIL to LON are scheduled on a Friday (56 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (48 on average).
How much does it cost to fly round-trip from Illinois to London?
Airfare is typical for this route at the moment.
Illinois to London flights typically cost between $684 and $1,056 in November.The cheapest round-trip price found within the last 5 days was $703 on Multiple Airlines (Nov 8-Nov 19).
How far ahead should I book a flight from Illinois to London?
To ensure you get the cheapest price possible for a flight from Illinois to London, you should look to book at least 28 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Related info for your journey
Find useful and relevant information for your journey from Illinois to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsIlford
Dorking
Gatwick
Hounslow
Wembley
Harrow
Southend-on-Sea
Basingstoke
Watford
Dartford
Winchester
Croydon
Chipping Norton
Kingston upon Thames
Slough
Eastbourne
Stansted
Sutton
Luton
Harlow
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to London
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to London by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to London by cabin class
Find flights from Illinois to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to London
Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 20, 2026.
Illinois and London flights
Browse other Illinois and London flight options. Last updated on October 20, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to London flights
Consider these flights traveling from Illinois to London.
Top 10 airlines flying from Illinois to London
Discover the top 10 airlines that operate flights from Illinois to London. 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 October 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$39 | Average$786 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$286 | Average$1,411 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$362 | Average$895 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$430 | Average$615 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$432 | Average$728 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$466 | Average$740 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$522 | Average$809 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$574 | Average$955 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$599 | Average$925 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$606 | Average$946 | FlexibilityNo cancel fee | On-timeN/A |