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$176+ Cheap flights from Illinois to the United Kingdom

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap flight deals from Illinois to United Kingdom

Cheapest flights from Illinois to United Kingdom
Explore the most affordable flight options available from Illinois to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.

This Mytrip deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” 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 2/26:30 pm
ORD
-
EDI
2 stops19h 45m
Multiple Airlines
Tue 2/108:40 am
EDI
-
ORD
2 stops14h 40m
Multiple Airlines
Deal found 1/18$482
This Mytrip deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” 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 4/297:25 pm
ORD
-
EDI
2 stops20h 35m
Multiple Airlines
Tue 5/56:15 am
EDI
-
ORD
2 stops18h 00m
Multiple Airlines
Deal found 1/20$488
This Mytrip deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” 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 2/26:30 pm
ORD
-
EDI
1 stop9h 30m
Icelandair
Tue 2/1011:00 am
EDI
-
ORD
1 stop12h 20m
Icelandair
Deal found 1/18$490
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” 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.
Mon 2/26:30 pm
ORD
-
EDI
1 stop9h 30m
Icelandair
Fri 2/612:20 pm
EDI
-
ORD
1 stop11h 00m
Icelandair
Deal found 1/20$491
This oojo deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” 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.
Mon 3/26:30 pm
ORD
-
EDI
1 stop9h 30m
Icelandair
Tue 3/1011:00 am
EDI
-
ORD
1 stop12h 20m
Icelandair
Deal found 1/19$494
This Scandinavian Airlines deal was found by Cheapflights users on 1/17. Clicking the “Pick Dates” 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 2/77:20 pm
ORD
-
MAN
2 stops35h 55m
Scandinavian Airlines
Tue 2/1012:55 pm
MAN
-
ORD
2 stops33h 50m
Scandinavian Airlines
Deal found 1/17$507
This oojo deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” 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.
Sat 4/47:25 pm
ORD
-
EDI
1 stop11h 55m
Icelandair
Sun 4/192:15 pm
EDI
-
ORD
1 stop10h 00m
Icelandair
Deal found 1/18$512
This oojo deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” 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.
Mon 4/137:25 pm
ORD
-
MAN
1 stop10h 15m
Icelandair
Mon 4/271:05 pm
MAN
-
ORD
1 stop11h 10m
Icelandair
Deal found 1/18$513
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:25 pm
ORD
-
LHR
1 stop18h 55m
Icelandair
Sat 5/21:05 pm
LHR
-
ORD
1 stop11h 10m
Icelandair
Deal found 1/20$518
This FlightHub deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:25 pm
ORD
-
MAN
1 stop10h 15m
Icelandair
Fri 4/101:05 pm
MAN
-
ORD
1 stop11h 10m
Icelandair
Deal found 1/18$518
This Kiwi.com deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” 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 2/16:30 pm
ORD
-
LHR
1 stop10h 20m
Icelandair
Tue 2/1012:15 pm
LHR
-
ORD
1 stop11h 05m
Icelandair
Deal found 1/18$519
This FlightHub deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:25 pm
ORD
-
LGW
1 stop13h 15m
Icelandair
Wed 5/133:40 pm
LGW
-
ORD
1 stop11h 45m
Icelandair
Deal found 1/19$519

Find flight deals from Illinois to United Kingdom

Keep the following information in mind while searching for Illinois to United Kingdom flight deals. Data was last updated January 20, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$483
(Mytrip)

One-way from

$176
(oojo)

Popular in

June

Cheapest in

April

Average price

$666

Good round-trip deal

$653 or less

Good one-way deal

$407 or less
Provider with most accurate pricing for Chicago (CHI)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-London (LON) flights.
Search Deals
From Illinois to United Kingdom
Search Deals
One-way flight from Illinois to United Kingdom
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($204 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Illinois to United Kingdom.
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Price to beat on a one-way flight from Illinois to United Kingdom.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to United Kingdom 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 2,558,603 searches. Data last updated January 20, 2026.
Use the filters below to find and compare flights from Illinois to the United Kingdom that are best for you.

Fly from

Illinois

Fly to

United Kingdom

Route

Depart

Return

Price

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 3/4

9:00 pm-5:50 pm

1 stop14h 50m

London Stansted

Tue 3/10

6:30 am-6:55 pm

1 stop17h 25m

$525

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 4/13

3:45 pm-7:40 am

1 stop9h 55m

London Luton

Tue 4/21

1:10 pm-7:15 pm

1 stop12h 05m

$530

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 3/25

4:50 pm-8:35 am

1 stop10h 45m

London Luton

Tue 3/31

1:10 pm-7:15 pm

1 stop12h 05m

$533

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Tue 4/21

7:25 pm-2:40 pm

1 stop13h 15m

London Gatwick

Tue 4/28

1:00 pm-6:15 pm

1 stop11h 15m

$534

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 4/15

9:00 pm-9:35 pm

1 stop18h 35m

London Luton

Wed 4/22

6:15 am-2:00 pm

1 stop13h 45m

$537

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Mon 4/13

7:25 pm-11:40 am

1 stop10h 15m

Manchester

Sat 4/25

1:05 pm-6:15 pm

1 stop11h 10m

$540

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Mon 4/13

7:25 pm-11:40 am

1 stop10h 15m

Manchester

Wed 4/29

1:05 pm-6:15 pm

1 stop11h 10m

$540

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 4/29

7:25 pm-11:45 am

1 stop10h 20m

London Gatwick

Fri 5/8

3:40 pm-9:25 pm

1 stop11h 45m

$542

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 3/31

3:45 pm-1:25 pm

1 stop15h 40m

London Luton

Tue 4/7

8:05 am-2:00 pm

1 stop11h 55m

$544

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Tue 2/10

9:45 pm-5:35 pm

1 stop13h 50m

Manchester

Tue 2/17

1:55 pm-7:15 pm

1 stop11h 20m

$557

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Illinois with our price prediction graph.
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 the United Kingdom

What is the cheapest month to book a flight from Illinois to United Kingdom?

Currently, December is the cheapest month in which you can book a flight from Illinois to United Kingdom (average of $96). Flying from Illinois to United Kingdom in July is currently the most expensive (average of $603). 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 GB?

Find hourly flight availability from Illinois to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 20, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to United Kingdom as you normally would.

Weekly flight availability from Illinois to United Kingdom

Explore weekly flight availability from Illinois to United Kingdom. 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 January 20, 2026.

The most flights from USIL to GB0 are scheduled on a Monday (45 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (45 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to United Kingdom. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to United Kingdom?

    A quick flight from Illinois to United Kingdom can take about 13h 15m. Icelandair provides one of the quickest options available for as low as $534. The distance from Illinois to United Kingdom is about 3960 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to United Kingdom one-way?

    One-way options have recently been found by users for as low as $135 on JetBlue. Other airlines that offer cheap prices include Icelandair from $183 and Scandinavian Airlines from $207 one-way.

  • Can I find deals for flights from Illinois to United Kingdom that include hotel bookings?

    Yes. In addition to deals on Illinois to United Kingdom flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to United Kingdom?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to United Kingdom.

  • Can I find deals for business class flights from Illinois to United Kingdom?

    Yes. Cheapflights offers flight deals from Illinois to United Kingdom by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to United Kingdom?

    Currently, December is the cheapest month in which you can book a flight from Illinois to United Kingdom (average of $96). Flying from Illinois to United Kingdom in July is currently the most expensive (average of $603). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to United Kingdom

Discover the top 10 airlines that operate flights from Illinois to United Kingdom. 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 2,558,603 searches. Data last updated January 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$732FlexibilityNo cancel feeOn-time62%
SWISSCheapest$257Average$573FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$331Average$635FlexibilityNo cancel feeOn-time77%
DeltaCheapest$345Average$987FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$427Average$577FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$437Average$670FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$480Average$994FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$499Average$838FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$516Average$773FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$522Average$809FlexibilityNo cancel feeOn-time75%

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