$321+ 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
Nov 26 — Dec 31
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to London
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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 27, 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 27, 2026.
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 -
1 stop14h 40m
Tue 12/88:00 am -
1 stop15h 20m
Deal found 10/22![Multiple Airlines logo]()
$708
This Mytrip deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/36:30 pm -
2 stops21h 20m
Tue 11/177:15 am -
2 stops16h 05m
Deal found 10/23![Multiple Airlines logo]()
$709
This deal was found by Cheapflights users on 10/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:55 pm -
1 stop11h 10m
Sun 11/297:50 am -
1 stop12h 20m
Deal found 10/26![Aer Lingus logo]()
$710
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/88:10 pm -
1 stop31h 35m
Sun 11/229:40 am -
2 stops36h 17m
Deal found 10/24![Multiple Airlines logo]()
$710
This Booking.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/156:30 pm -
2 stops15h 10m
Tue 11/178:15 am -
2 stops15h 05m
Deal found 10/22![Multiple Airlines logo]()
$710
This Booking.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/166:30 pm -
2 stops17h 30m
Tue 11/248:15 am -
2 stops15h 05m
Deal found 10/24![Multiple Airlines logo]()
$711
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/16:30 pm -
1 stop15h 20m
Tue 12/88:00 am -
1 stop15h 20m
Deal found 10/22![Multiple Airlines logo]()
$712
This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:30 pm -
2 stops17h 20m
Tue 12/157:15 am -
2 stops16h 05m
Deal found 10/26![Multiple Airlines logo]()
$712
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:30 pm -
2 stops15h 50m
Wed 11/259:50 am -
1 stop20h 52m
Deal found 10/23![Multiple Airlines logo]()
$714
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Wed 11/117:00 pm -
1 stop14h 35m
Tue 11/248:15 am -
2 stops15h 05m
Deal found 10/25![Multiple Airlines logo]()
$714
This Mytrip deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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
Tue 12/87:45 am -
2 stops15h 35m
Deal found 10/24![Multiple Airlines logo]()
$715
This Booking.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 -
2 stops14h 50m
Thu 11/198:50 am -
2 stops14h 30m
Deal found 10/24![Multiple Airlines logo]()
$715
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 27, 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 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sat 1/166:30 pm -
1 stop12h 35m
Sun 1/246:00 am -
1 stop17h 20m
Deal found 10/27![Multiple Airlines logo]()
$725
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 3/110:39 am -
1 stop19h 21m
Wed 3/39:00 am -
2 stops18h 10m
Deal found 10/24![United Airlines logo]()
$801
This Scandinavian Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/77:10 pm -
1 stop20h 30m
Tue 11/176:40 pm -
1 stop28h 05m
Deal found 10/23![Scandinavian Airlines logo]()
$807
This Turkish Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 10/23![Turkish Airlines logo]()
$833
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/25. 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.
Sun 1/178:10 pm -
1 stop13h 35m
Tue 2/99:20 pm -
2 stops24h 10m
Deal found 10/25![TAP AIR PORTUGAL logo]()
$895
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 10/24![Delta logo]()
$897
This Virgin Atlantic deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 -
2 stops17h 30m
Tue 3/236:20 am -
2 stops21h 03m
Deal found 10/24![Virgin Atlantic logo]()
$899
This Expedia deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 3/236:05 am -
2 stops23h 34m
Deal found 10/24![British Airways logo]()
$928
This KLM deal was found by Cheapflights users on 10/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/104:25 pm -
1 stop9h 45m
Mon 2/229:20 am -
1 stop11h 05m
Deal found 10/25![KLM logo]()
$938
This American Airlines deal was found by Cheapflights users on 10/27. 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 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 3/232:15 pm -
2 stops15h 23m
Deal found 10/27![American Airlines logo]()
$973
This SWISS deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Wed 11/49:35 pm -
2 stops14h 15m
Thu 11/128:30 am -
1 stop13h 45m
Deal found 10/24![SWISS logo]()
$1,230
This Mytrip deal was found by Cheapflights users on 10/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:00 pm -
2 stops19h 50m
Sat 11/219:30 pm -
2 stops24h 00m
Deal found 10/27![Multiple Airlines logo]()
$727
This Turkish Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 4/78:05 pm -
1 stop31h 00m
Wed 4/2110:10 am -
1 stop38h 00m
Deal found 10/23![Turkish Airlines logo]()
$838
This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/811:45 am -
2 stops26h 40m
Sun 11/157:25 am -
2 stops32h 35m
Deal found 10/26![Multiple Airlines logo]()
$773
This Scandinavian Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 12/117:10 pm -
2 stops31h 45m
Wed 12/167:05 am -
2 stops15h 50m
Deal found 10/23![Scandinavian Airlines logo]()
$890
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/25. 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.
Wed 1/207:00 pm -
1 stop14h 05m
Mon 2/89:35 pm -
2 stops47h 55m
Deal found 10/25![TAP AIR PORTUGAL logo]()
$897
This United Airlines deal was found by Cheapflights users on 10/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:45 pm -
Nonstop8h 10m
Tue 12/89:00 am -
1 stop13h 15m
Deal found 10/26![United Airlines logo]()
$902
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 stop13h 25m
Tue 3/2311:45 am -
2 stops28h 32m
Deal found 10/24![Delta logo]()
$903
This Virgin Atlantic deal was found by Cheapflights users on 10/26. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/67:40 pm -
2 stops15h 00m
Wed 4/1410:00 am -
2 stops18h 04m
Deal found 10/26![Virgin Atlantic logo]()
$917
This British Airways deal was found by Cheapflights users on 10/26. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/226:56 pm -
1 stop11h 39m
Tue 3/307:25 pm -
2 stops29h 01m
Deal found 10/26![British Airways logo]()
$945
This Turkish Airlines deal was found by Cheapflights users on 10/25. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/711:45 am -
1 stop16h 10m
Tue 2/235:20 pm -
1 stop22h 40m
Deal found 10/25![Turkish Airlines logo]()
$863
This Delta deal was found by Cheapflights users on 10/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2212:00 pm -
1 stop16h 00m
Tue 3/308:55 am -
2 stops19h 28m
Deal found 10/26![Delta logo]()
$904
This Scandinavian Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:10 pm -
2 stops20h 10m
Sun 12/136:40 am -
2 stops22h 17m
Deal found 10/24![Scandinavian Airlines logo]()
$913
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Fri 1/156:30 pm -
1 stop13h 25m
Fri 1/296:00 am -
1 stop17h 20m
Deal found 10/27![Multiple Airlines logo]()
$834
This Virgin Atlantic deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/54:20 pm -
1 stop20h 10m
Sun 4/118:15 pm -
1 stop24h 00m
Deal found 10/23![Virgin Atlantic logo]()
$942
This Turkish Airlines deal was found by Cheapflights users on 10/25. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1111:45 am -
1 stop16h 10m
Thu 2/255:20 pm -
1 stop31h 00m
Deal found 10/25![Turkish Airlines logo]()
$863
This British Airways deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 3/176:16 pm -
1 stop12h 19m
Tue 3/234:30 pm -
1 stop12h 37m
Deal found 10/23![British Airways logo]()
$959
This United Airlines deal was found by Cheapflights users on 10/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/235:40 pm -
1 stop13h 20m
Wed 3/318:00 am -
1 stop14h 31m
Deal found 10/26![United Airlines logo]()
$969
This Delta deal was found by Cheapflights users on 10/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/244:00 pm -
1 stop10h 50m
Wed 3/313:15 pm -
1 stop13h 08m
Deal found 10/26![Delta logo]()
$929
This Mytrip deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/276:30 pm -
1 stop13h 25m
Fri 12/46:05 am -
1 stop17h 15m
Deal found 10/23![Multiple Airlines logo]()
$849
Last-minute flights from Illinois to LondonDiscover last-minute flight deals from Illinois to London. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to London. Data last updated October 27, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/36:30 pm -
2 stops21h 20m
Tue 11/177:15 am -
2 stops16h 05m
Deal found 10/23![Multiple Airlines logo]()
$709
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/88:10 pm -
1 stop31h 35m
Sun 11/229:40 am -
2 stops36h 17m
Deal found 10/24![Multiple Airlines logo]()
$710
This Booking.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 -
2 stops14h 50m
Thu 11/198:50 am -
2 stops14h 30m
Deal found 10/24![Multiple Airlines logo]()
$715
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Wed 11/117:00 pm -
1 stop14h 35m
Tue 11/248:15 am -
2 stops15h 05m
Deal found 10/25![Multiple Airlines logo]()
$714
This Booking.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/156:30 pm -
2 stops15h 10m
Tue 11/178:15 am -
2 stops15h 05m
Deal found 10/22![Multiple Airlines logo]()
$710
This Booking.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/166:30 pm -
2 stops17h 30m
Tue 11/248:15 am -
2 stops15h 05m
Deal found 10/24![Multiple Airlines logo]()
$711
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:30 pm -
2 stops15h 50m
Wed 11/259:50 am -
1 stop20h 52m
Deal found 10/23![Multiple Airlines logo]()
$714
This deal was found by Cheapflights users on 10/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:55 pm -
1 stop11h 10m
Sun 11/297:50 am -
1 stop12h 20m
Deal found 10/26![Aer Lingus logo]()
$710
This Mytrip deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 stops19h 45m
Tue 12/17:15 am -
2 stops16h 05m
Deal found 10/24![Multiple Airlines logo]()
$715
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 11/278:10 pm -
1 stop21h 45m
Thu 12/32:50 pm -
2 stops30h 40m
Deal found 10/25![Multiple Airlines logo]()
$716
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 -
1 stop14h 40m
Tue 12/88:00 am -
1 stop15h 20m
Deal found 10/22![Multiple Airlines logo]()
$708
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 -
1 stop14h 35m
Tue 12/87:05 am -
1 stop16h 15m
Deal found 10/22![Multiple Airlines logo]()
$709
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 27, 2026.
Search for one-way flight options from Illinois to London. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sun 12/68:10 pm -
2 stops30h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$321
This Cheapflightsfares deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 10/22![British Airways logo]()
$322
This Justfly.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/68:10 pm -
1 stop13h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![TAP AIR PORTUGAL logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 4/207:25 pm -
2 stops39h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$322
This Justfly.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 3/99:50 am -
2 stops14h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Virgin Atlantic logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:30 pm -
3 stops22h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$323
This Cheapflightsfares deal was found by Cheapflights users on 10/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/252:30 pm -
1 stop11h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![JetBlue logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 stop31h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 4/2110:25 pm -
2 stops35h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$324
This Icelandair deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/106:30 pm -
1 stop19h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Icelandair logo]()
$325
This Icelandair deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/106:30 pm -
1 stop10h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Icelandair logo]()
$325
This Mytrip deal was found by Cheapflights users on 10/25. 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.
Mon 12/146:30 pm -
1 stop10h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Icelandair logo]()
$326
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 27, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $709 (Kiwi.com) |
One-way from | $321 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $911 |
Good round-trip deal | $893 or less |
Good one-way deal | $384 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 27, 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 - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Wed 4/21
5:10 pm-4:00 pm
1 stop16h 50m
London Gatwick
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$329
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
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
Wed 3/24
12:00 pm-11:40 am
1 stop18h 40m
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
12:00 pm-9:55 am
2 stops16h 55m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$334
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Tue 11/24
6:30 pm-9:40 pm
3 stops45h 10m
London Luton
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$335
ChicagoLondon
ORD Chicago O'Hare Intl - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Sun 11/8
8:10 pm-8:35 pm
2 stops18h 25m
London Gatwick
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$339
ChicagoLondon
ORD Chicago O'Hare Intl - LCY London City
ORDLCY
Chicago O'Hare Intl
Tue 4/20
10:35 am-9:30 am
2 stops16h 55m
London City
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$345
ChicagoLondon
ORD Chicago O'Hare Intl - LCY London City
ORDLCY
Chicago O'Hare Intl
Sun 1/24
9:30 am-8:10 am
2 stops16h 40m
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
Fri 11/13
8:10 pm-2:30 pm
1 stop12h 20m
London Luton
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$353
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-LTN
MLI-LHR
ORD-LHR
ORD-STN
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
ORD-LTN
MLI-LHR
ORD-LHR
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 $623). Flying from Illinois to London in June is currently the most expensive (average of $1,385). 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 27, 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.
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 $641 and $1,060 in November.The cheapest round-trip price found within the last 5 days was $709 on Multiple Airlines (Nov 29-Dec 3).
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
Kingston upon Thames
Chipping Norton
Slough
Eastbourne
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
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 27, 2026.
Illinois and London flights
Browse other Illinois and London flight options. Last updated on October 27, 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 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$39 | Average$823 | 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$616 | 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$549 | Average$979 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$599 | Average$927 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$606 | Average$983 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$624 | Average$1,133 | FlexibilityNo cancel fee | On-time71% |