$320+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
Dec 5 — Dec 121
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 November 5, 2026.
Explore the most affordable flight options available from Illinois to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2026.
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.
Tue 11/176:30 pm -
3 stops33h 05m
Tue 11/246:40 am -
2 stops16h 40m
Deal found 11/3![Multiple Airlines logo]()
$688
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:30 pm -
1 stop19h 00m
Wed 12/212:15 pm -
1 stop35h 05m
Deal found 11/4![Icelandair logo]()
$689
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:10 pm -
2 stops21h 40m
Thu 12/37:20 am -
2 stops16h 00m
Deal found 11/2![Multiple Airlines logo]()
$689
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.
Sat 12/57:10 pm -
2 stops44h 10m
Tue 12/87:05 am -
2 stops39h 50m
Deal found 11/4![Scandinavian Airlines logo]()
$690
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 12/68:10 pm -
2 stops36h 55m
Sun 12/136:20 am -
1 stop15h 10m
Deal found 11/2![Multiple Airlines logo]()
$690
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 12/66:30 pm -
1 stop14h 35m
Mon 12/148:05 am -
1 stop15h 15m
Deal found 11/2![Multiple Airlines logo]()
$691
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:10 pm -
2 stops56h 25m
Sun 12/136:40 am -
1 stop16h 05m
Deal found 11/4![Scandinavian Airlines logo]()
$692
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:30 pm -
1 stop14h 30m
Mon 12/78:05 am -
1 stop15h 15m
Deal found 11/4![Multiple Airlines logo]()
$694
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 12/26:30 pm -
1 stop12h 30m
Tue 12/157:05 am -
1 stop16h 15m
Deal found 11/2![Multiple Airlines logo]()
$696
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.
Sat 12/56:30 pm -
1 stop12h 35m
Mon 12/148:05 am -
1 stop15h 15m
Deal found 11/3![Multiple Airlines logo]()
$697
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.
Sun 11/298:10 pm -
2 stops18h 55m
Tue 12/87:00 am -
2 stops16h 20m
Deal found 11/1![Multiple Airlines logo]()
$697
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 12/68:10 pm -
2 stops34h 10m
Fri 12/116:55 am -
1 stop14h 35m
Deal found 11/2![Multiple Airlines logo]()
$697
Best flights from Illinois to LondonDiscover carefully curated flight deals from Illinois to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
Discover carefully curated flight deals from Illinois to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
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.
Wed 11/256:30 pm -
2 stops20h 30m
Wed 12/27:30 am -
2 stops15h 50m
Deal found 11/1![Multiple Airlines logo]()
$728
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.
Sat 4/107:15 pm -
2 stops15h 10m
Sat 4/176:40 am -
2 stops15h 30m
Deal found 11/2![Scandinavian Airlines logo]()
$781
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 3/110:39 am -
1 stop19h 21m
Wed 3/39:00 am -
2 stops18h 10m
Deal found 11/1![United Airlines logo]()
$807
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/305:30 pm -
1 stop31h 25m
Tue 12/89:20 am -
1 stop13h 22m
Deal found 11/3![JetBlue logo]()
$828
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 2/238:15 pm -
1 stop31h 40m
Tue 3/25:20 pm -
1 stop31h 00m
Deal found 11/3![Turkish Airlines logo]()
$833
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/218:40 pm -
Nonstop7h 50m
Wed 4/287:30 am -
1 stop16h 20m
Deal found 11/4![Finnair logo]()
$879
This Virgin Atlantic 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/31:25 pm -
2 stops20h 20m
Thu 2/1810:00 am -
2 stops17h 47m
Deal found 11/4![Virgin Atlantic logo]()
$895
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1712:00 pm -
1 stop18h 40m
Tue 3/2310:00 am -
2 stops17h 23m
Deal found 11/1![Delta logo]()
$898
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/173:14 pm -
1 stop14h 11m
Tue 3/236:05 am -
2 stops23h 33m
Deal found 11/1![British Airways logo]()
$929
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.
Wed 12/24:25 pm -
1 stop9h 45m
Wed 12/99:20 am -
1 stop11h 05m
Deal found 10/31![KLM logo]()
$936
This American Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” 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 12/26:00 am -
1 stop20h 35m
Wed 12/93:05 pm -
2 stops15h 17m
Deal found 11/5![American Airlines logo]()
$1,030
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/287:15 pm -
2 stops17h 35m
Thu 5/137:30 pm -
1 stop26h 40m
Deal found 10/31![Scandinavian Airlines logo]()
$791
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 3/15:47 pm -
1 stop12h 13m
Wed 3/39:00 am -
2 stops19h 58m
Deal found 11/1![United Airlines logo]()
$807
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.
Sat 2/206:30 pm -
2 stops20h 35m
Sat 2/279:45 pm -
2 stops25h 35m
Deal found 11/2![Multiple Airlines logo]()
$813
This Turkish 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1711:45 am -
1 stop22h 35m
Wed 2/2410:55 am -
1 stop37h 25m
Deal found 11/1![Turkish Airlines logo]()
$833
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2611:00 am -
1 stop13h 55m
Fri 12/49:20 am -
1 stop13h 22m
Deal found 11/4![JetBlue logo]()
$834
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 3/1712:00 pm -
2 stops14h 20m
Tue 3/2310:00 am -
2 stops17h 23m
Deal found 11/1![Virgin Atlantic logo]()
$902
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/49:00 pm -
1 stop14h 15m
Wed 5/1210:45 am -
1 stop14h 30m
Deal found 11/4![Multiple Airlines logo]()
$821
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/287:00 pm -
2 stops30h 10m
Wed 3/36:50 am -
2 stops22h 09m
Deal found 11/4![United Airlines logo]()
$822
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2212:00 pm -
1 stop14h 50m
Tue 3/308:55 am -
2 stops19h 28m
Deal found 11/1![Delta logo]()
$905
This Turkish 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/239:15 pm -
1 stop38h 05m
Tue 4/65:50 pm -
1 stop30h 20m
Deal found 11/4![Turkish Airlines logo]()
$838
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/148:10 pm -
2 stops15h 15m
Fri 3/196:40 am -
1 stop16h 05m
Deal found 10/31![Scandinavian Airlines logo]()
$854
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/176:56 pm -
1 stop10h 29m
Tue 3/2311:15 am -
1 stop13h 49m
Deal found 11/2![British Airways logo]()
$972
This Virgin Atlantic 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/57:40 pm -
2 stops15h 40m
Wed 4/149:20 am -
1 stop10h 55m
Deal found 11/2![Virgin Atlantic logo]()
$906
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 pm -
2 stops19h 50m
Tue 12/17:05 am -
1 stop16h 15m
Deal found 10/31![Multiple Airlines logo]()
$826
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/117:10 pm -
2 stops41h 40m
Mon 1/1810:20 am -
1 stop12h 25m
Deal found 11/3![Scandinavian Airlines logo]()
$855
This Delta deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” 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 12/75:19 pm -
1 stop12h 21m
Mon 12/145:35 pm -
2 stops29h 01m
Deal found 11/5![Delta logo]()
$943
This Turkish 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/411:45 am -
1 stop16h 10m
Tue 2/95:20 pm -
1 stop22h 40m
Deal found 11/4![Turkish Airlines logo]()
$863
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.
Fri 2/263:14 pm -
2 stops14h 26m
Mon 3/11:10 pm -
2 stops17h 28m
Deal found 11/2![American Airlines logo]()
$1,077
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 1/131:55 pm -
2 stops18h 20m
Sat 4/179:00 am -
2 stops15h 15m
Deal found 10/31![Multiple Airlines logo]()
$837
Last-minute flights from Illinois to LondonDiscover last-minute flight deals from Illinois to London. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to London. Data last updated November 5, 2026 and is based on user searches.
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.
Tue 11/176:30 pm -
3 stops33h 05m
Tue 11/246:40 am -
2 stops16h 40m
Deal found 11/3![Multiple Airlines logo]()
$688
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:30 pm -
1 stop19h 00m
Wed 12/212:15 pm -
1 stop35h 05m
Deal found 11/4![Icelandair logo]()
$689
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:10 pm -
2 stops21h 40m
Thu 12/37:20 am -
2 stops16h 00m
Deal found 11/2![Multiple Airlines logo]()
$689
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:30 pm -
1 stop14h 30m
Mon 12/78:05 am -
1 stop15h 15m
Deal found 11/4![Multiple Airlines logo]()
$694
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 12/26:30 pm -
1 stop12h 30m
Tue 12/157:05 am -
1 stop16h 15m
Deal found 11/2![Multiple Airlines logo]()
$696
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.
Sat 12/57:10 pm -
2 stops44h 10m
Tue 12/87:05 am -
2 stops39h 50m
Deal found 11/4![Scandinavian Airlines logo]()
$690
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.
Sat 12/56:30 pm -
1 stop12h 35m
Mon 12/148:05 am -
1 stop15h 15m
Deal found 11/3![Multiple Airlines logo]()
$697
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 12/68:10 pm -
2 stops36h 55m
Sun 12/136:20 am -
1 stop15h 10m
Deal found 11/2![Multiple Airlines logo]()
$690
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 12/66:30 pm -
1 stop14h 35m
Mon 12/148:05 am -
1 stop15h 15m
Deal found 11/2![Multiple Airlines logo]()
$691
This Kiwi.com deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:30 pm -
1 stop12h 30m
Mon 12/148:05 am -
1 stop15h 15m
Deal found 11/5![Multiple Airlines logo]()
$688
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:10 pm -
2 stops56h 25m
Sun 12/136:40 am -
1 stop16h 05m
Deal found 11/4![Scandinavian Airlines logo]()
$692
This Mytrip deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:30 pm -
2 stops20h 35m
Tue 12/159:45 pm -
2 stops25h 35m
Deal found 11/5![Multiple Airlines logo]()
$652
One-way flights from Illinois to LondonSearch for one-way flight options from Illinois to London. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from Illinois to London. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/27:20 pm -
Nonstop7h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Iberia logo]()
$320
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.
Wed 12/27:00 pm -
1 stop14h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![TAP AIR PORTUGAL logo]()
$320
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.
Sun 11/298:10 pm -
3 stops29h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$320
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.
Mon 11/166:30 pm -
2 stops16h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$321
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.
Sun 11/88:10 pm -
2 stops38h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$321
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.
Mon 2/155:10 pm -
Nonstop7h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![British Airways logo]()
$322
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.
Wed 12/26:30 pm -
2 stops18h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$322
This Flightnetwork 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/17:20 pm -
Nonstop7h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![British Airways logo]()
$323
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/108:10 pm -
1 stop13h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![TAP AIR PORTUGAL logo]()
$323
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.
Fri 1/158:10 pm -
2 stops40h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$323
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/182:30 pm -
1 stop11h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![JetBlue logo]()
$324
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 11/226:30 pm -
2 stops35h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$324
Find flight deals from Illinois to London
Keep the following information in mind while searching for Illinois to London flight deals. Data was last updated November 5, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $652 (Mytrip) |
One-way from | $320 (Expedia) |
Popular in | June |
Cheapest in | February |
Average price | $777 |
Good round-trip deal | $969 or less |
Good one-way deal | $378 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 5, 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 - STN London Stansted
ORDSTN
Chicago O'Hare Intl
Sun 12/6
8:10 pm-9:25 pm
3 stops43h 15m
London Stansted
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$322
Quickest round-trip
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Mon 4/26
10:00 pm-12:00 pm
Nonstop8h 00m
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 11/30
6:30 pm-10:40 pm
3 stops22h 10m
London Stansted
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$335
BloomingtonLondon
BMI Bloomington-Normal - LHR London Heathrow
BMILHR
Bloomington-Normal
Mon 3/22
6:01 am-7:50 am
1 stop20h 49m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$339
ChicagoLondon
ORD Chicago O'Hare Intl - LGW London Gatwick
ORDLGW
Chicago O'Hare Intl
Wed 3/10
6:10 pm-3:45 pm
2 stops15h 35m
London Gatwick
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$339
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Sun 12/6
6:30 pm-1:55 pm
3 stops37h 25m
London Luton
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$340
ChicagoLondon
ORD Chicago O'Hare Intl - LTN London Luton
ORDLTN
Chicago O'Hare Intl
Sun 1/24
8:10 pm-10:45 am
2 stops32h 35m
London Luton
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$341
ChicagoLondon
ORD Chicago O'Hare Intl - LCY London City
ORDLCY
Chicago O'Hare Intl
Mon 3/29
1:35 pm-9:30 am
2 stops13h 55m
London City
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$350
ChicagoLondon
ORD Chicago O'Hare Intl - LCY London City
ORDLCY
Chicago O'Hare Intl
Mon 2/1
11:20 am-8:50 am
2 stops15h 30m
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 1/15
8:10 pm-8:55 pm
3 stops42h 45m
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-LHR
ORD-LGW
ORD-STN
ORD-LTN
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
ORD-LTN
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 $626). Flying from Illinois to London in June is currently the most expensive (average of $1,388). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to LON?
Find hourly flight availability from Illinois to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to London as you normally would.
Weekly flight availability from Illinois to London
Explore weekly flight availability from Illinois to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 5, 2026.
The most flights from USIL to LON are scheduled on a Monday (45 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (39 on average).
How much does it cost to fly round-trip from Illinois to London?
Airfare is below average for this route at the moment.
Illinois to London flights typically cost between $669 and $1,081 in December.The cheapest round-trip price found within the last 5 days was $652 on Multiple Airlines (Dec 10-Dec 15).
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 November 5, 2026.
Illinois and London flights
Browse other Illinois and London flight options. Last updated on November 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to London flights
Consider these flights traveling from Illinois to London.
Top 10 airlines flying from Illinois to London
Discover the top 10 airlines that operate flights from Illinois to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$39 | Average$860 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$286 | Average$1,411 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$362 | Average$902 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$430 | Average$657 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$432 | Average$728 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$466 | Average$742 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$549 | Average$981 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$609 | Average$930 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$617 | Average$989 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$624 | Average$1,145 | FlexibilityNo cancel fee | On-time71% |