$309+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
Oct 31 — Nov 71
Round-trip
1 adult, Economy
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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 1, 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 1, 2026.
This Booking.com deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 11/27:10 pm -
1 stop32h 10m
Thu 11/56:40 am -
2 stops16h 05m
Deal found 9/28![Scandinavian Airlines logo]()
$722
This Justfly.com deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Sat 10/36:05 pm -
1 stop33h 40m
Tue 11/244:35 pm -
1 stop28h 55m
Deal found 9/26![TAP AIR PORTUGAL logo]()
$722
This FlightHub deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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.
Sat 10/36:05 pm -
1 stop34h 15m
Tue 11/246:30 pm -
1 stop27h 00m
Deal found 9/27![TAP AIR PORTUGAL logo]()
$723
This FlightHub deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:00 pm -
1 stop33h 45m
Wed 10/144:25 pm -
1 stop26h 15m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$723
This Kiwi.com deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:35 am -
2 stops19h 05m
Wed 11/188:15 am -
1 stop14h 30m
Deal found 9/27![Multiple Airlines logo]()
$723
This FlightHub deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:00 pm -
1 stop34h 25m
Tue 11/36:30 pm -
1 stop27h 00m
Deal found 9/30![TAP AIR PORTUGAL logo]()
$724
This Mytrip deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 10/267:30 pm -
2 stops19h 45m
Mon 11/26:30 am -
2 stops16h 50m
Deal found 9/28![Multiple Airlines logo]()
$724
This Mytrip deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:10 pm -
2 stops20h 10m
Sun 11/159:05 pm -
2 stops25h 40m
Deal found 9/29![Scandinavian Airlines logo]()
$725
This Mytrip deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:00 pm -
2 stops22h 45m
Sat 11/144:50 pm -
2 stops28h 40m
Deal found 9/30![Multiple Airlines logo]()
$725
This Kiwi.com deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:10 pm -
1 stop16h 55m
Tue 11/38:15 am -
1 stop14h 30m
Deal found 9/27![Multiple Airlines logo]()
$725
This Kiwi.com deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/286:30 pm -
1 stop10h 20m
Mon 12/1412:15 pm -
1 stop11h 05m
Deal found 9/29![Icelandair logo]()
$726
This Kiwi.com deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:10 pm -
1 stop12h 15m
Thu 12/107:00 am -
1 stop15h 45m
Deal found 9/30![Multiple Airlines logo]()
$726
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 1, 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 1, 2026.
This Mytrip deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 11/246:30 pm -
2 stops17h 35m
Tue 12/17:15 am -
1 stop12h 55m
Deal found 9/25![Multiple Airlines logo]()
$795
This United Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 3/13:46 pm -
2 stops13h 04m
Wed 3/39:00 am -
2 stops18h 24m
Deal found 9/28![United Airlines logo]()
$800
This Scandinavian Airlines deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 11/37:10 pm -
1 stop17h 20m
Tue 11/106:05 pm -
2 stops28h 40m
Deal found 9/26![Scandinavian Airlines logo]()
$803
This Turkish Airlines deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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 11/911:45 am -
1 stop22h 35m
Tue 11/175:20 pm -
1 stop22h 40m
Deal found 9/27![Turkish Airlines logo]()
$831
This JetBlue deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Sat 10/109:38 am -
1 stop14h 52m
Tue 10/208:40 am -
1 stop16h 34m
Deal found 9/26![JetBlue logo]()
$891
This Delta deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 3/174:00 pm -
1 stop14h 40m
Tue 3/236:20 am -
2 stops21h 03m
Deal found 9/28![Delta logo]()
$892
This British Airways deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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 3/172:59 pm -
1 stop15h 36m
Tue 3/237:30 am -
2 stops21h 39m
Deal found 9/27![British Airways logo]()
$929
This Virgin Atlantic deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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.
Sun 2/1410:30 am -
2 stops16h 30m
Sun 2/2810:00 am -
2 stops17h 33m
Deal found 9/27![Virgin Atlantic logo]()
$934
This KLM deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 12/104:25 pm -
1 stop9h 45m
Wed 12/169:20 am -
1 stop11h 05m
Deal found 9/26![KLM logo]()
$946
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 11/68:10 pm -
2 stops30h 10m
Tue 11/109:20 pm -
2 stops24h 10m
Deal found 9/25![TAP AIR PORTUGAL logo]()
$988
This Expedia deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 11/1212:13 pm -
1 stop14h 22m
Thu 11/196:15 am -
2 stops18h 15m
Deal found 9/28![Iberia logo]()
$1,030
This American Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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.
Thu 11/126:05 am -
1 stop18h 50m
Thu 11/191:50 pm -
1 stop14h 12m
Deal found 9/28![American Airlines logo]()
$1,062
This SWISS deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:10 pm -
1 stop14h 30m
Thu 11/269:15 am -
2 stops15h 00m
Deal found 9/29![SWISS logo]()
$1,219
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 10/237:15 pm -
1 stop19h 55m
Sat 11/76:15 am -
1 stop16h 30m
Deal found 9/25![Multiple Airlines logo]()
$806
This Turkish Airlines deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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 10/2512:45 pm -
1 stop16h 10m
Tue 11/35:20 pm -
1 stop32h 00m
Deal found 9/27![Turkish Airlines logo]()
$833
This Scandinavian Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 11/217:10 pm -
2 stops18h 45m
Wed 11/2510:20 am -
1 stop12h 25m
Deal found 9/28![Scandinavian Airlines logo]()
$846
This United Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/249:50 pm -
Nonstop8h 10m
Tue 3/29:00 am -
1 stop13h 15m
Deal found 9/29![United Airlines logo]()
$858
This Delta deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/711:08 am -
1 stop13h 17m
Mon 12/146:30 am -
2 stops22h 31m
Deal found 9/30![Delta logo]()
$933
This Scandinavian Airlines deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 10/177:15 pm -
1 stop16h 25m
Mon 10/266:40 am -
1 stop16h 05m
Deal found 9/26![Scandinavian Airlines logo]()
$851
This Virgin Atlantic deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:25 pm -
1 stop15h 20m
Thu 11/194:45 pm -
2 stops22h 42m
Deal found 9/30![Virgin Atlantic logo]()
$939
This Turkish Airlines deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 3/1112:45 pm -
1 stop21h 35m
Thu 3/185:20 pm -
1 stop22h 40m
Deal found 9/26![Turkish Airlines logo]()
$861
This Mytrip deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 1/66:30 pm -
3 stops32h 10m
Thu 1/147:30 pm -
2 stops27h 50m
Deal found 9/25![Multiple Airlines logo]()
$862
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 10/254:45 pm -
Nonstop8h 10m
Tue 11/39:00 am -
1 stop13h 15m
Deal found 9/25![United Airlines logo]()
$867
This KLM deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 11/1211:05 am -
1 stop18h 35m
Thu 11/1912:40 pm -
1 stop16h 28m
Deal found 9/28![KLM logo]()
$961
This FlightHub deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 1/283:27 pm -
1 stop11h 08m
Tue 2/27:40 pm -
2 stops34h 35m
Deal found 9/26![British Airways logo]()
$990
This Delta deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop19h 50m
Fri 11/208:40 am -
2 stops20h 28m
Deal found 9/29![Delta logo]()
$933
This Scandinavian Airlines deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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.
Fri 12/257:10 pm -
1 stop14h 50m
Tue 1/125:30 pm -
2 stops53h 15m
Deal found 9/27![Scandinavian Airlines logo]()
$857
This Turkish Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 11/2311:45 am -
1 stop22h 35m
Wed 12/210:55 am -
1 stop29h 05m
Deal found 9/28![Turkish Airlines logo]()
$861
This United Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/13:45 pm -
Nonstop8h 10m
Fri 12/116:35 am -
1 stop17h 50m
Deal found 9/29![United Airlines logo]()
$869
This Virgin Atlantic deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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 11/410:30 am -
2 stops15h 40m
Sun 11/88:05 pm -
2 stops27h 00m
Deal found 9/27![Virgin Atlantic logo]()
$963
Last-minute flights from Illinois to LondonDiscover last-minute flight deals from Illinois to London. Data last updated October 1, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to London. Data last updated October 1, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Sat 10/36:05 pm -
1 stop33h 40m
Tue 11/244:35 pm -
1 stop28h 55m
Deal found 9/26![TAP AIR PORTUGAL logo]()
$722
This FlightHub deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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.
Sat 10/36:05 pm -
1 stop34h 15m
Tue 11/246:30 pm -
1 stop27h 00m
Deal found 9/27![TAP AIR PORTUGAL logo]()
$723
This FlightHub deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:00 pm -
1 stop33h 45m
Wed 10/144:25 pm -
1 stop26h 15m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$723
This FlightHub deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Sun 10/117:15 pm -
2 stops42h 40m
Wed 10/146:40 pm -
1 stop27h 30m
Deal found 9/26![Scandinavian Airlines logo]()
$727
This Kiwi.com deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:24 am -
2 stops18h 41m
Thu 11/57:20 am -
1 stop15h 25m
Deal found 9/29![Multiple Airlines logo]()
$728
This Mytrip deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 10/267:30 pm -
2 stops19h 45m
Mon 11/26:30 am -
2 stops16h 50m
Deal found 9/28![Multiple Airlines logo]()
$724
This Kiwi.com deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:30 pm -
1 stop10h 20m
Sat 11/1412:15 pm -
1 stop11h 05m
Deal found 9/29![Icelandair logo]()
$730
This Kiwi.com deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:10 pm -
1 stop16h 55m
Tue 11/38:15 am -
1 stop14h 30m
Deal found 9/27![Multiple Airlines logo]()
$725
This FlightHub deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:00 pm -
1 stop34h 25m
Tue 11/36:30 pm -
1 stop27h 00m
Deal found 9/30![TAP AIR PORTUGAL logo]()
$724
This Mytrip deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:10 pm -
2 stops18h 20m
Wed 11/41:00 pm -
2 stops33h 45m
Deal found 9/30![Multiple Airlines logo]()
$729
This Kiwi.com deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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 10/297:30 pm -
1 stop10h 25m
Fri 11/1311:55 am -
1 stop11h 25m
Deal found 9/27![Icelandair logo]()
$726
This Booking.com deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Fri 10/308:10 pm -
1 stop32h 10m
Mon 11/26:40 am -
2 stops16h 05m
Deal found 9/26![Scandinavian Airlines logo]()
$729
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 1, 2026.
Search for one-way flight options from Illinois to London. Find affordable one-way fares based on user searches. Data last updated October 1, 2026.
This Booking.com deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 11/106:30 pm -
1 stop10h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Icelandair logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 11/96:30 pm -
2 stops34h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Multiple Airlines logo]()
$309
This FlightHub deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Tue 11/36:30 pm -
1 stop10h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Icelandair logo]()
$310
This FlightHub deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Tue 11/36:30 pm -
1 stop10h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Icelandair logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:25 pm -
3 stops31h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$310
This Justfly.com deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Tue 12/2910:48 am -
1 stop28h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Air Canada logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 11/106:30 pm -
2 stops17h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Multiple Airlines logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 11/276:30 pm -
3 stops34h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” 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 10/156:58 pm -
1 stop33h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$316
This oojo deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:38 am -
1 stop14h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![JetBlue logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:50 pm -
1 stop36h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$317
This Trip.com deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Sun 10/257:30 pm -
1 stop10h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Icelandair logo]()
$318
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 1, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $722 (Booking.com) |
One-way from | $309 (Booking.com) |
Popular in | June |
Cheapest in | January |
Average price | $811 |
Good round-trip deal | $799 or less |
Good one-way deal | $484 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 1, 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
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Mon 3/22
4:45 pm-5:55 am
Nonstop8h 10m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$325
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Thu 11/12
1:00 pm-6:55 am
1 stop11h 55m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$330
ChicagoLondon
ORD Chicago O'Hare Intl - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Mon 12/28
6:30 pm-5:50 pm
2 stops17h 20m
London Stansted
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$341
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Mon 10/5
10:59 am-9:30 am
1 stop16h 31m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$360
ChicagoLondon
ORD Chicago O'Hare Intl - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Tue 12/15
6:30 pm-11:05 pm
3 stops22h 35m
London Stansted
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$377
ChicagoLondon
ORD Chicago O'Hare Intl - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Wed 11/25
6:30 pm-8:05 am
2 stops31h 35m
London Gatwick
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$385
ChicagoLondon
ORD Chicago O'Hare Intl - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Mon 10/5
3:45 pm-11:20 pm
1 stop25h 35m
London Stansted
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$388
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Fri 10/9
12:38 pm-9:30 am
1 stop14h 52m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$403
ChicagoLondon
ORD Chicago O'Hare Intl - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Thu 10/15
6:00 pm-10:55 pm
2 stops22h 55m
London Stansted
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$407
ChicagoLondon
ORD Chicago O'Hare Intl - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Sat 3/20
6:30 pm-11:10 pm
2 stops23h 40m
London Stansted
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$423
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-LGW
ORD-STN
MLI-LHR
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-LGW
ORD-STN
MLI-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 $658). Flying from Illinois to London in June is currently the most expensive (average of $1,383). 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 1, 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 1, 2026.
The most flights from USIL to LON are scheduled on a Monday (50 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (42 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 $652 and $915 in November.The cheapest round-trip price found within the last 5 days was $722 on Scandinavian Airlines (Nov 2-Nov 5).
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 65 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
Harrow
Wembley
Southend-on-Sea
Basingstoke
Watford
Dartford
Winchester
Croydon
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
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
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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 October 1, 2026.
Illinois and London flights
Browse other Illinois and London flight options. Last updated on October 1, 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 1, 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$902 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$430 | Average$594 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$432 | Average$728 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$466 | Average$685 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$522 | Average$809 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$574 | Average$914 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$599 | Average$919 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$606 | Average$934 | FlexibilityNo cancel fee | On-timeN/A |