$553+ Cheap flights from London (LON) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ORD
Dec 5 — Dec 121
Round-trip
1 adult, Economy
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Find cheap flights from London to Illinois with Cheapflights
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Cheapest flights from London to IllinoisExplore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2026.
Explore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2026.
This Justfly.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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.
Fri 11/209:35 pm -
2 stops47h 55m
Sun 12/68:10 pm -
1 stop13h 35m
Deal found 11/2![TAP AIR PORTUGAL logo]()
$695
This oojo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Thu 12/37:05 am -
2 stops15h 40m
Mon 2/157:10 pm -
2 stops20h 25m
Deal found 11/3![Scandinavian Airlines logo]()
$695
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/227:45 am -
2 stops15h 35m
Thu 12/36:30 pm -
2 stops20h 45m
Deal found 10/31![Multiple Airlines logo]()
$696
This Trip.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Fri 11/66:00 am -
1 stop15h 30m
Fri 11/138:10 pm -
1 stop16h 45m
Deal found 10/31![TAP AIR PORTUGAL logo]()
$696
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am -
2 stops16h 20m
Fri 11/276:30 pm -
2 stops19h 00m
Deal found 10/31![Multiple Airlines logo]()
$697
This Cheapflightsfares deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Sun 11/86:00 am -
1 stop15h 30m
Sun 11/158:10 pm -
1 stop19h 25m
Deal found 10/31![TAP AIR PORTUGAL logo]()
$697
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/227:00 am -
2 stops16h 20m
Thu 12/36:30 pm -
2 stops21h 30m
Deal found 10/31![Multiple Airlines logo]()
$697
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/188:00 am -
2 stops15h 20m
Sun 11/226:30 pm -
2 stops19h 10m
Deal found 10/31![Multiple Airlines logo]()
$698
This Kiwi.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 12/166:00 am -
1 stop15h 30m
Fri 1/88:10 pm -
1 stop20h 30m
Deal found 10/31![TAP AIR PORTUGAL logo]()
$699
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/257:00 am -
2 stops16h 20m
Wed 12/26:30 pm -
2 stops21h 05m
Deal found 10/31![Multiple Airlines logo]()
$699
This Cheapflightsfares deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/96:40 am -
1 stop16h 15m
Sat 9/257:15 pm -
2 stops20h 20m
Deal found 11/2![Scandinavian Airlines logo]()
$700
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am -
2 stops16h 20m
Sun 11/296:30 pm -
2 stops19h 10m
Deal found 10/31![Multiple Airlines logo]()
$702
Best flights from London to IllinoisDiscover carefully curated flight deals from London to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
Discover carefully curated flight deals from London to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
This Icelandair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Mon 3/88:35 pm -
1 stop26h 45m
Thu 3/257:30 pm -
1 stop10h 20m
Deal found 11/3![Icelandair logo]()
$713
This Mytrip deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 11/207:00 am -
2 stops16h 20m
Tue 11/246:30 pm -
2 stops21h 30m
Deal found 11/1![Multiple Airlines logo]()
$725
This Scandinavian Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1410:20 am -
1 stop12h 25m
Sat 1/3010:40 am -
2 stops25h 50m
Deal found 11/4![Scandinavian Airlines logo]()
$810
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 12/79:30 am -
1 stop16h 35m
Wed 12/233:45 pm -
Nonstop8h 10m
Deal found 11/1![United Airlines logo]()
$863
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/78:40 am -
2 stops16h 05m
Wed 12/239:59 am -
1 stop15h 06m
Deal found 11/3![Delta logo]()
$906
This SWISS deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 2/17:05 pm -
2 stops23h 05m
Mon 2/156:30 pm -
2 stops16h 35m
Deal found 11/2![SWISS logo]()
$931
This British Airways deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 1/206:50 am -
2 stops18h 54m
Sun 1/249:00 pm -
1 stop15h 35m
Deal found 11/4![British Airways logo]()
$935
This Virgin Atlantic deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 1/1310:00 am -
2 stops17h 52m
Wed 1/201:25 pm -
2 stops20h 20m
Deal found 11/3![Virgin Atlantic logo]()
$936
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/12:50 pm -
1 stop31h 10m
Thu 4/811:00 am -
2 stops16h 50m
Deal found 11/4![TAP AIR PORTUGAL logo]()
$940
This Finnair deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:20 am -
1 stop17h 39m
Wed 12/2312:00 pm -
1 stop18h 10m
Deal found 11/1![Finnair logo]()
$943
This Turkish Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 11/175:20 pm -
1 stop22h 40m
Tue 12/111:45 am -
1 stop16h 10m
Deal found 11/2![Turkish Airlines logo]()
$947
This KLM deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 12/148:40 am -
1 stop11h 45m
Wed 12/304:25 pm -
1 stop11h 05m
Deal found 10/31![KLM logo]()
$1,245
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/178:20 am -
1 stop19h 39m
Thu 12/243:50 pm -
1 stop14h 20m
Deal found 11/2![American Airlines logo]()
$1,250
This Icelandair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Fri 3/128:35 pm -
1 stop26h 45m
Mon 3/227:30 pm -
1 stop10h 20m
Deal found 11/3![Icelandair logo]()
$713
This Mytrip deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 11/179:30 pm -
2 stops24h 00m
Sun 11/228:10 pm -
2 stops18h 40m
Deal found 11/2![Multiple Airlines logo]()
$780
This Icelandair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Sun 3/78:35 pm -
1 stop26h 45m
Mon 3/227:30 pm -
1 stop10h 20m
Deal found 11/3![Icelandair logo]()
$713
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/158:40 am -
1 stop11h 30m
Sat 11/283:55 pm -
1 stop10h 10m
Deal found 10/31![Multiple Airlines logo]()
$793
This Scandinavian Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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.
Mon 11/307:50 pm -
2 stops26h 55m
Mon 12/77:10 pm -
2 stops20h 25m
Deal found 11/2![Scandinavian Airlines logo]()
$904
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/76:30 am -
2 stops16h 13m
Tue 12/227:00 am -
1 stop18h 05m
Deal found 11/3![Delta logo]()
$906
This Virgin Atlantic deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 3/1010:00 am -
2 stops17h 33m
Mon 3/2210:30 am -
2 stops17h 30m
Deal found 11/3![Virgin Atlantic logo]()
$936
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 12/77:50 am -
Nonstop9h 05m
Tue 12/225:45 pm -
Nonstop8h 10m
Deal found 10/31![United Airlines logo]()
$937
This Turkish Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 2/235:20 pm -
1 stop22h 40m
Tue 3/28:15 pm -
1 stop38h 05m
Deal found 11/3![Turkish Airlines logo]()
$949
This SWISS deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 11/257:05 pm -
1 stop23h 35m
Tue 12/14:10 pm -
1 stop14h 40m
Deal found 11/4![SWISS logo]()
$953
This Mytrip deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/27:15 am -
1 stop12h 55m
Sun 12/63:55 pm -
1 stop12h 30m
Deal found 11/4![Multiple Airlines logo]()
$801
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/76:30 am -
2 stops16h 20m
Wed 12/239:29 am -
1 stop15h 21m
Deal found 11/3![Delta logo]()
$906
This Virgin Atlantic deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 12/28:40 am -
2 stops16h 05m
Thu 12/104:25 pm -
1 stop10h 25m
Deal found 11/1![Virgin Atlantic logo]()
$943
This Turkish Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/210:55 am -
1 stop37h 25m
Tue 12/811:45 am -
1 stop16h 10m
Deal found 11/2![Turkish Airlines logo]()
$951
This SWISS deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:00 am -
2 stops15h 15m
Wed 11/256:50 pm -
2 stops15h 50m
Deal found 10/31![SWISS logo]()
$953
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/29:20 pm -
2 stops24h 10m
Sat 2/274:29 pm -
3 stops22h 11m
Deal found 11/1![TAP AIR PORTUGAL logo]()
$1,050
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” 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 12/277:40 am -
Nonstop9h 05m
Tue 1/57:56 pm -
1 stop19h 24m
Deal found 11/1![United Airlines logo]()
$969
Last-minute flights from London to IllinoisDiscover last-minute flight deals from London to Illinois. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from London to Illinois. Data last updated November 5, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Fri 11/66:00 am -
1 stop15h 30m
Fri 11/138:10 pm -
1 stop16h 45m
Deal found 10/31![TAP AIR PORTUGAL logo]()
$696
This Cheapflightsfares deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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.
Sun 11/86:00 am -
1 stop15h 30m
Sun 11/158:10 pm -
1 stop19h 25m
Deal found 10/31![TAP AIR PORTUGAL logo]()
$697
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/188:00 am -
2 stops15h 20m
Sun 11/226:30 pm -
2 stops19h 10m
Deal found 10/31![Multiple Airlines logo]()
$698
This Justfly.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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.
Fri 11/209:35 pm -
2 stops47h 55m
Sun 12/68:10 pm -
1 stop13h 35m
Deal found 11/2![TAP AIR PORTUGAL logo]()
$695
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/227:45 am -
2 stops15h 35m
Thu 12/36:30 pm -
2 stops20h 45m
Deal found 10/31![Multiple Airlines logo]()
$696
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/227:00 am -
2 stops16h 20m
Thu 12/36:30 pm -
2 stops21h 30m
Deal found 10/31![Multiple Airlines logo]()
$697
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am -
2 stops16h 20m
Fri 11/276:30 pm -
2 stops19h 00m
Deal found 10/31![Multiple Airlines logo]()
$697
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am -
2 stops16h 20m
Sun 11/296:30 pm -
2 stops19h 10m
Deal found 10/31![Multiple Airlines logo]()
$702
This Mytrip deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 11/257:00 am -
2 stops16h 20m
Wed 12/26:30 pm -
2 stops21h 05m
Deal found 10/31![Multiple Airlines logo]()
$699
This oojo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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.
Thu 12/37:05 am -
2 stops15h 40m
Mon 2/157:10 pm -
2 stops20h 25m
Deal found 11/3![Scandinavian Airlines logo]()
$695
This Cheapflightsfares deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/96:40 am -
1 stop16h 15m
Sat 9/257:15 pm -
2 stops20h 20m
Deal found 11/2![Scandinavian Airlines logo]()
$700
This Kiwi.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 12/166:00 am -
1 stop15h 30m
Fri 1/88:10 pm -
1 stop20h 30m
Deal found 10/31![TAP AIR PORTUGAL logo]()
$699
One-way flights from London to IllinoisSearch for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 12/11:25 pm -
3 stops32h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$553
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” 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 11/186:40 am -
2 stops16h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$553
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 11/133:35 pm -
2 stops53h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$553
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 2/176:00 am -
3 stops47h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$553
This Kiwi.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:30 pm -
3 stops27h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$554
This Kissandfly.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/103:15 pm -
3 stops30h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$554
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 12/278:20 am -
3 stops39h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$554
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/64:25 pm -
1 stop29h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![TAP AIR PORTUGAL logo]()
$555
This Expedia deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 3/169:15 am -
1 stop13h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![SWISS logo]()
$555
This Air Canada deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/39:00 am -
2 stops15h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Air Canada logo]()
$555
This Kiwi.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” 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 4/126:00 am -
1 stop14h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$555
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” 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 3/161:25 pm -
3 stops32h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$556
Find flight deals from London to Illinois
Keep the following information in mind while searching for London to Illinois flight deals. Data was last updated November 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $694 (SmartFares) |
One-way from | $553 (Kiwi.com) |
Popular in | August |
Cheapest in | February |
Average price | $791 |
Good round-trip deal | $789 or less |
Good one-way deal | $749 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from London to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 5, 2026.
Use the filters below to find and compare flights from London to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LondonChicago
LTN London Luton - ORD Chicago O'Hare Intl
LTNORD
London Luton
Wed 12/30
5:00 am-9:20 pm
2 stops22h 20m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$555
LondonChicago
LTN London Luton - ORD Chicago O'Hare Intl
LTNORD
London Luton
Sun 4/18
8:00 am-2:25 pm
1 stop36h 25m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$555
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sun 4/11
8:00 am-4:00 pm
1 stop14h 00m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$557
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 4/7
8:00 am-4:00 pm
1 stop14h 00m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$557
LondonChicago
LTN London Luton - ORD Chicago O'Hare Intl
LTNORD
London Luton
Sat 11/14
9:45 pm-5:20 pm
3 stops25h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$560
LondonChicago
LGW London Gatwick - ORD Chicago O'Hare Intl
LGWORD
London Gatwick
Thu 4/15
10:40 am-4:00 pm
1 stop35h 20m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$562
LondonChicago
LGW London Gatwick - ORD Chicago O'Hare Intl
LGWORD
London Gatwick
Tue 4/20
12:05 pm-4:00 pm
2 stops33h 55m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$569
LondonChicago
LTN London Luton - ORD Chicago O'Hare Intl
LTNORD
London Luton
Thu 4/29
8:00 am-4:00 pm
1 stop14h 00m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$569
LondonChicago
STN London Stansted - ORD Chicago O'Hare Intl
STNORD
London Stansted
Thu 11/12
9:45 pm-5:20 pm
3 stops25h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$576
LondonChicago
STN London Stansted - ORD Chicago O'Hare Intl
STNORD
London Stansted
Sat 4/10
5:45 pm-2:00 pm
1 stop26h 15m
Chicago O'Hare Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$578
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from London to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from London with our price prediction graph.
LHR-ORD
LTN-ORD
LCY-ORD
LGW-ORD
STN-ORD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London to Illinois
LON-USIL
LHR-ORD
LTN-ORD
LCY-ORD
LGW-ORD
What is the cheapest month to book a flight from London to Illinois?
Currently, February is the cheapest month in which you can book a flight from London to Illinois (average of $654). Flying from London to Illinois in August is currently the most expensive (average of $1,066). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LON to IL?
Find hourly flight availability from London to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2026.
When flying from London to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from London to Illinois
Explore weekly flight availability from London to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 5, 2026.
The most flights from LON to USIL are scheduled on a Monday (43 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (35 on average).
How much does it cost to fly round-trip from London to Illinois?
Airfare is typical for this route at the moment.
London to Illinois flights typically cost between $691 and $897 in February.The cheapest round-trip price found within the last 5 days was $694 on Scandinavian Airlines (Feb 26-Mar 1).
How far ahead should I book a flight from London to Illinois?
Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated November 5, 2026.
See what other customers who have flown with Aer Lingus,United Airlines, andIcelandair from London to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.3
Food
6.7
Crew
8.1
Boarding
7.5
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Overall
7.3
Food
6.7
Crew
8.1
Boarding
7.5
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Overall
7.3
Food
6.7
Crew
8.1
Boarding
7.5
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Overall
7.3
Food
6.7
Crew
8.1
Boarding
7.5
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Overall
7.3
Food
6.7
Crew
8.1
Boarding
7.5
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Overall
7.3
Food
6.7
Crew
8.1
Boarding
7.5
Comfort
7.2
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Related info for your journey
Find useful and relevant information for your journey from London to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for London to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from London to Illinois by cabin class
Find flights from London to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
London and Illinois flights
Browse other London and Illinois flight options. Last updated on November 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
London to Illinois flights
Consider these flights traveling from London to Illinois.
Top 7 airlines flying from London to Illinois
Discover the top 7 airlines that operate flights from London to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$421 | Average$662 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$583 | Average$962 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$614 | Average$1,023 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$666 | Average$696 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$703 | Average$848 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$806 | Average$895 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$895 | Average$1,140 | FlexibilityNo cancel fee | On-time69% |