$318+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
Dec 12 — Dec 191
Round-trip
1 adult, Economy
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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 November 12, 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 November 12, 2026.
This Mytrip deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 12/66:30 pm -
2 stops20h 50m
Thu 12/106:40 am -
2 stops16h 40m
Deal found 11/11![Multiple Airlines logo]()
$644
This FlightHub deal was found by Cheapflights users on 11/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:10 pm -
2 stops44h 25m
Thu 12/101:55 pm -
2 stops32h 50m
Deal found 11/12![Scandinavian Airlines logo]()
$655
This Mytrip deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 12/26:30 pm -
2 stops20h 35m
Tue 12/159:45 pm -
2 stops25h 35m
Deal found 11/9![Multiple Airlines logo]()
$655
This FlightHub deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:10 pm -
2 stops56h 25m
Mon 12/146:40 am -
2 stops40h 05m
Deal found 11/9![Scandinavian Airlines logo]()
$656
This Mytrip deal was found by Cheapflights users on 11/12. 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.
Sun 12/66:30 pm -
2 stops15h 50m
Thu 12/102:05 pm -
3 stops33h 15m
Deal found 11/12![Multiple Airlines logo]()
$656
This Mytrip deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 12/66:30 pm -
2 stops22h 15m
Tue 12/157:15 am -
2 stops16h 05m
Deal found 11/8![Multiple Airlines logo]()
$658
This Mytrip deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 12/26:30 pm -
2 stops20h 35m
Thu 12/109:45 pm -
2 stops25h 35m
Deal found 11/9![Multiple Airlines logo]()
$662
This Mytrip deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 12/86:30 pm -
2 stops21h 20m
Tue 12/157:15 am -
2 stops16h 05m
Deal found 11/10![Multiple Airlines logo]()
$664
This Mytrip deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 12/66:30 pm -
2 stops21h 40m
Tue 12/157:45 am -
2 stops15h 35m
Deal found 11/8![Multiple Airlines logo]()
$667
This Mytrip deal was found by Cheapflights users on 11/12. 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.
Sun 12/66:30 pm -
1 stop14h 35m
Thu 12/106:05 am -
1 stop17h 15m
Deal found 11/12![Multiple Airlines logo]()
$671
This Mytrip deal was found by Cheapflights users on 11/12. 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 12/76:30 pm -
2 stops15h 50m
Thu 12/107:30 pm -
3 stops27h 50m
Deal found 11/12![Multiple Airlines logo]()
$671
This Mytrip deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 -
2 stops20h 50m
Mon 12/1410:35 pm -
2 stops24h 45m
Deal found 11/9![Multiple Airlines logo]()
$671
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 November 12, 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 November 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” 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 1/196:30 pm -
1 stop14h 35m
Mon 1/258:00 am -
1 stop15h 20m
Deal found 11/7![Multiple Airlines logo]()
$712
This Scandinavian Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/317:10 pm -
2 stops15h 50m
Sat 2/610:20 am -
1 stop12h 25m
Deal found 11/9![Scandinavian Airlines logo]()
$715
This Icelandair deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 3/307:25 pm -
1 stop13h 15m
Thu 4/83:40 pm -
1 stop32h 35m
Deal found 11/10![Icelandair logo]()
$809
This Turkish Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 2/1811:45 am -
1 stop22h 35m
Tue 2/235:20 pm -
1 stop22h 40m
Deal found 11/8![Turkish Airlines logo]()
$864
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 2/198:10 pm -
2 stops42h 30m
Fri 3/59:35 pm -
2 stops47h 55m
Deal found 11/11![TAP AIR PORTUGAL logo]()
$892
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/282:38 pm -
1 stop11h 27m
Wed 5/56:15 am -
2 stops21h 20m
Deal found 11/12![Iberia logo]()
$899
This KLM deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 3/294:50 pm -
1 stop10h 00m
Tue 4/69:20 am -
1 stop10h 40m
Deal found 11/10![KLM logo]()
$901
This Delta deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 4/74:05 pm -
1 stop10h 45m
Tue 4/138:25 am -
1 stop11h 35m
Deal found 11/11![Delta logo]()
$902
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 2/148:27 am -
1 stop15h 28m
Thu 2/189:00 am -
2 stops19h 59m
Deal found 11/11![United Airlines logo]()
$937
This British Airways deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 3/173:14 pm -
1 stop14h 11m
Tue 3/236:05 am -
2 stops23h 33m
Deal found 11/11![British Airways logo]()
$944
This Virgin Atlantic deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 4/2110:10 am -
2 stops15h 45m
Sat 5/18:25 am -
1 stop11h 35m
Deal found 11/11![Virgin Atlantic logo]()
$957
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 3/173:14 pm -
2 stops13h 16m
Tue 3/2311:15 am -
1 stop18h 23m
Deal found 11/9![American Airlines logo]()
$979
This SWISS deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 1/116:30 pm -
2 stops16h 35m
Tue 3/307:15 pm -
1 stop23h 30m
Deal found 11/9![SWISS logo]()
$1,211
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 1/296:30 pm -
1 stop13h 25m
Fri 2/56:00 am -
1 stop17h 20m
Deal found 11/9![Multiple Airlines logo]()
$717
This Mytrip deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 2/236:30 pm -
1 stop14h 35m
Sun 2/286:00 am -
1 stop17h 20m
Deal found 11/11![Multiple Airlines logo]()
$734
This Icelandair deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 3/3110:25 pm -
1 stop10h 15m
Thu 4/83:40 pm -
1 stop32h 35m
Deal found 11/10![Icelandair logo]()
$809
This Turkish Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 2/168:15 pm -
1 stop31h 40m
Wed 2/2410:55 am -
1 stop29h 05m
Deal found 11/9![Turkish Airlines logo]()
$864
This Delta deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 3/2311:45 am -
2 stops32h 31m
Deal found 11/8![Delta logo]()
$905
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 2/198:10 pm -
2 stops30h 10m
Thu 2/254:00 pm -
1 stop29h 30m
Deal found 11/8![TAP AIR PORTUGAL logo]()
$915
This Mytrip deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” 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 2/96:30 pm -
2 stops19h 30m
Tue 2/167:45 am -
2 stops15h 35m
Deal found 11/7![Multiple Airlines logo]()
$762
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 2/2210:43 am -
1 stop19h 17m
Fri 2/269:00 am -
2 stops19h 58m
Deal found 11/10![United Airlines logo]()
$937
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/272:38 pm -
1 stop16h 12m
Tue 5/412:30 pm -
1 stop11h 58m
Deal found 11/12![Iberia logo]()
$939
This Turkish Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 1/3111:45 am -
1 stop16h 10m
Tue 2/95:20 pm -
1 stop22h 40m
Deal found 11/9![Turkish Airlines logo]()
$864
This British Airways deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 3/176:56 pm -
1 stop10h 29m
Tue 3/2311:15 am -
1 stop13h 49m
Deal found 11/10![British Airways logo]()
$973
This Virgin Atlantic deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 2/204:25 pm -
1 stop21h 10m
Sat 2/278:40 am -
1 stop11h 45m
Deal found 11/8![Virgin Atlantic logo]()
$999
This KLM deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 12/76:10 am -
1 stop19h 40m
Mon 12/1410:50 am -
1 stop18h 11m
Deal found 11/8![KLM logo]()
$1,004
This Mytrip deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 12/56:30 pm -
2 stops20h 35m
Fri 12/119:45 pm -
2 stops25h 35m
Deal found 11/9![Multiple Airlines logo]()
$768
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 1/305:13 pm -
1 stop31h 12m
Tue 2/98:40 am -
2 stops20h 09m
Deal found 11/10![Delta logo]()
$941
This Turkish Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 3/2412:45 pm -
1 stop16h 10m
Fri 4/25:50 pm -
1 stop21h 45m
Deal found 11/10![Turkish Airlines logo]()
$867
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 11/259:50 pm -
Nonstop8h 10m
Wed 12/21:45 pm -
1 stop32h 30m
Deal found 11/8![United Airlines logo]()
$959
Last-minute flights from Illinois to LondonDiscover last-minute flight deals from Illinois to London. Data last updated November 12, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to London. Data last updated November 12, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 12/26:30 pm -
2 stops20h 35m
Tue 12/159:45 pm -
2 stops25h 35m
Deal found 11/9![Multiple Airlines logo]()
$655
This Mytrip deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 12/26:30 pm -
2 stops20h 35m
Thu 12/109:45 pm -
2 stops25h 35m
Deal found 11/9![Multiple Airlines logo]()
$662
This Mytrip deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 12/66:30 pm -
2 stops20h 50m
Thu 12/106:40 am -
2 stops16h 40m
Deal found 11/11![Multiple Airlines logo]()
$644
This Mytrip deal was found by Cheapflights users on 11/12. 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.
Sun 12/66:30 pm -
2 stops15h 50m
Thu 12/102:05 pm -
3 stops33h 15m
Deal found 11/12![Multiple Airlines logo]()
$656
This Mytrip deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 12/66:30 pm -
2 stops22h 15m
Tue 12/157:15 am -
2 stops16h 05m
Deal found 11/8![Multiple Airlines logo]()
$658
This Mytrip deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 12/66:30 pm -
2 stops21h 40m
Tue 12/157:45 am -
2 stops15h 35m
Deal found 11/8![Multiple Airlines logo]()
$667
This Mytrip deal was found by Cheapflights users on 11/12. 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.
Sun 12/66:30 pm -
1 stop14h 35m
Thu 12/106:05 am -
1 stop17h 15m
Deal found 11/12![Multiple Airlines logo]()
$671
This FlightHub deal was found by Cheapflights users on 11/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:10 pm -
2 stops44h 25m
Thu 12/101:55 pm -
2 stops32h 50m
Deal found 11/12![Scandinavian Airlines logo]()
$655
This Mytrip deal was found by Cheapflights users on 11/12. 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 12/76:30 pm -
2 stops15h 50m
Thu 12/107:30 pm -
3 stops27h 50m
Deal found 11/12![Multiple Airlines logo]()
$671
This Mytrip deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 12/86:30 pm -
2 stops21h 20m
Tue 12/157:15 am -
2 stops16h 05m
Deal found 11/10![Multiple Airlines logo]()
$664
This Mytrip deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 -
2 stops20h 50m
Mon 12/1410:35 pm -
2 stops24h 45m
Deal found 11/9![Multiple Airlines logo]()
$671
This FlightHub deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:10 pm -
2 stops56h 25m
Mon 12/146:40 am -
2 stops40h 05m
Deal found 11/9![Scandinavian Airlines logo]()
$656
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 November 12, 2026.
Search for one-way flight options from Illinois to London. Find affordable one-way fares based on user searches. Data last updated November 12, 2026.
This Booking.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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.
Sun 12/68:10 pm -
2 stops18h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![TAP AIR PORTUGAL logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 1/106:30 pm -
3 stops34h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$319
This Expedia deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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.
Mon 2/87:20 pm -
Nonstop7h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Iberia logo]()
$320
This FlightHub deal was found by Cheapflights users on 11/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 pm -
1 stop32h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![TAP AIR PORTUGAL logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 -
2 stops32h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 3/86:30 pm -
2 stops31h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$321
This Mytrip deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 3/86:50 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![SWISS logo]()
$322
This Mytrip deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/106:30 pm -
2 stops18h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” 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 12/96:30 pm -
2 stops18h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$322
This Mytrip deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” 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 3/16:50 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![SWISS logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” 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 3/287:25 pm -
2 stops29h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$324
This Mytrip deal was found by Cheapflights users on 11/12. 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.
Sun 11/298:10 pm -
1 stop31h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![TAP AIR PORTUGAL logo]()
$325
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 November 12, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $643 (Mytrip) |
One-way from | $318 (Booking.com) |
Popular in | June |
Cheapest in | February |
Average price | $794 |
Good round-trip deal | $970 or less |
Good one-way deal | $402 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 November 12, 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
6:01 am-7:50 am
1 stop20h 49m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$339
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
$339
ChicagoLondon
ORD Chicago O'Hare Intl - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Sat 4/24
6:10 pm-4:00 pm
2 stops15h 50m
London Gatwick
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$339
ChicagoLondon
ORD Chicago O'Hare Intl - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Mon 3/8
1:35 pm-3:45 pm
2 stops20h 10m
London Gatwick
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$339
ChicagoLondon
ORD Chicago O'Hare Intl - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Wed 2/3
7:00 pm-10:00 am
2 stops33h 00m
London Gatwick
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$340
ChicagoLondon
ORD Chicago O'Hare Intl - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Thu 11/26
6:30 pm-7:30 am
2 stops31h 00m
London Stansted
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$344
ChicagoLondon
ORD Chicago O'Hare Intl - LCY London City
ORDLCY
Chicago O'Hare Intl
Wed 4/21
10:10 am-7:55 am
2 stops15h 45m
London City
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$350
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Tue 3/2
6:30 pm-9:05 pm
3 stops20h 35m
London Luton
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$353
ChicagoLondon
ORD Chicago O'Hare Intl - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Fri 1/15
8:10 pm-9:20 pm
2 stops19h 10m
London Stansted
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$358
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
$359
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.
ORD-LHR
ORD-LTN
ORD-LGW
ORD-STN
BMI-LHR
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
ORD-LHR
ORD-LTN
ORD-LGW
ORD-STN
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 $640). Flying from Illinois to London in June is currently the most expensive (average of $1,389). 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 November 12, 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 November 12, 2026.
The most flights from USIL to LON are scheduled on a Wednesday (43 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (38 on average).
How much does it cost to fly round-trip from Illinois to London?
Airfare is below average for this route at the moment.
Illinois to London flights typically cost between $701 and $1,097 in December.The cheapest round-trip price found within the last 5 days was $644 on Multiple Airlines (Dec 6-Dec 10).
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
Dartford
Winchester
Croydon
Kingston upon Thames
Chipping Norton
Slough
Eastbourne
Watford
Stansted
Sutton
Luton
Bedford
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to London
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Complete your trip
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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 November 12, 2026.
Illinois and London flights
Browse other Illinois and London flight options. Last updated on November 12, 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 November 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$39 | Average$860 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$286 | Average$1,411 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$362 | Average$902 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$430 | Average$659 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$432 | Average$729 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$466 | Average$746 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$549 | Average$995 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$624 | Average$1,195 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$625 | Average$934 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$631 | Average$974 | FlexibilityNo cancel fee | On-time70% |