United Kingdom

$173+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
Apr 5 — Apr 121
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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 March 6, 2026.

This oojo deal was found by Cheapflights users on 3/1. 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 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
Wed 4/221:05 pm
MAN
-
ORD
1 stop11h 10m
Icelandair
Deal found 3/1$528
This Mytrip deal was found by Cheapflights users on 3/1. 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 4/137:25 pm
ORD
-
EDI
2 stops16h 05m
Multiple Airlines
Tue 4/216:15 am
EDI
-
ORD
2 stops18h 00m
Multiple Airlines
Deal found 3/1$544
This Mytrip deal was found by Cheapflights users on 3/3. 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 4/277:15 pm
ORD
-
EDI
2 stops20h 20m
Multiple Airlines
Fri 5/154:55 pm
EDI
-
ORD
3 stops29h 15m
Multiple Airlines
Deal found 3/3$549
This Mytrip deal was found by Cheapflights users on 3/1. 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.
Tue 4/287:25 pm
ORD
-
LTN
2 stops20h 45m
Multiple Airlines
Thu 5/79:25 am
LTN
-
ORD
2 stops14h 50m
Multiple Airlines
Deal found 3/1$551
This Mytrip deal was found by Cheapflights users on 3/1. 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 4/137:25 pm
ORD
-
MAN
2 stops20h 55m
Multiple Airlines
Wed 4/227:55 am
MAN
-
ORD
2 stops16h 20m
Multiple Airlines
Deal found 3/1$551
This oojo deal was found by Cheapflights users on 3/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:25 pm
ORD
-
LGW
1 stop13h 15m
Icelandair
Sun 4/193:40 pm
LGW
-
ORD
1 stop11h 45m
Icelandair
Deal found 3/2$552
This oojo deal was found by Cheapflights users on 3/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/229:25 pm
ORD
-
LHR
1 stop15h 05m
TAP AIR PORTUGAL
Tue 3/316:45 pm
LHR
-
ORD
1 stop27h 15m
TAP AIR PORTUGAL
Deal found 3/1$555
This Icelandair deal was found by Cheapflights users on 3/1. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:25 pm
ORD
-
LGW
1 stop13h 15m
Icelandair
Thu 5/71:00 pm
LGW
-
ORD
1 stop11h 15m
Icelandair
Deal found 3/1$555
This Mytrip deal was found by Cheapflights users on 3/1. 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 4/87:25 pm
ORD
-
STN
2 stops20h 15m
Multiple Airlines
Mon 4/131:10 pm
STN
-
ORD
2 stops35h 05m
Multiple Airlines
Deal found 3/1$555
This Icelandair deal was found by Cheapflights users on 3/1. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2510:25 pm
ORD
-
LGW
1 stop10h 15m
Icelandair
Fri 10/23:40 pm
LGW
-
ORD
1 stop11h 45m
Icelandair
Deal found 3/1$556
This Icelandair deal was found by Cheapflights users on 3/1. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:25 pm
ORD
-
LGW
1 stop13h 15m
Icelandair
Thu 10/13:40 pm
LGW
-
ORD
1 stop32h 35m
Icelandair
Deal found 3/1$557
This Mytrip deal was found by Cheapflights users on 3/3. 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 4/287:25 pm
ORD
-
MAN
2 stops17h 05m
Multiple Airlines
Wed 5/67:55 am
MAN
-
ORD
2 stops19h 30m
Multiple Airlines
Deal found 3/3$557

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 March 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$528
(oojo)

One-way from

$173

Popular in

June

Cheapest in

September

Average price

$710

Good round-trip deal

$711 or less

Good one-way deal

$400 or less
Provider with most accurate pricing for Chicago (CHI)-London (LON) flight deals.
Provider most trusted by Cheapflights users for Chicago (CHI)-London (LON) flights.
From Illinois to United Kingdom
One-way flight from Illinois to United Kingdom
Highest demand for flights based on searches. 21% potential increase in price ($209 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($36 potential savings vs. average RT price).
Average for round-trip flights in March 2026
Price to beat on a round-trip flight from Illinois to United Kingdom.
Price to beat on a one-way flight from Illinois to United Kingdom.

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 March 6, 2026.
Use the filters below to find and compare flights from Illinois to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Thu 5/7

7:25 pm-4:45 pm

2 stops15h 20m

London Luton

Tue 5/12

9:40 am-6:15 pm

2 stops14h 35m

$619

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Mon 4/27

7:15 pm-8:55 am

1 stop31h 40m

Manchester

Thu 4/30

7:10 pm-4:10 pm

1 stop27h 00m

$621

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 5/6

6:10 pm-8:30 am

Nonstop8h 20m

London Heathrow

Tue 5/12

6:50 am-12:00 pm

1 stop11h 10m

$659

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 5/6

7:25 pm-9:15 pm

2 stops19h 50m

London Luton

Sat 5/16

9:00 am-6:15 pm

2 stops15h 15m

$663

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 4/20

3:45 pm-12:45 pm

1 stop15h 00m

London Luton

Mon 4/27

8:15 am-2:00 pm

1 stop11h 45m

$670

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Thu 4/30

7:25 pm-2:40 pm

1 stop13h 15m

London Gatwick

Fri 5/8

3:40 pm-9:25 pm

1 stop11h 45m

$676

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Thu 4/2

4:20 pm-1:10 pm

1 stop14h 50m

Manchester

Thu 4/9

5:55 am-4:43 pm

2 stops16h 48m

$678

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Wed 8/19

12:57 pm-10:25 am

2 stops15h 28m

Manchester

Sun 8/23

9:00 am-4:57 pm

1 stop13h 57m

$683

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 4/29

3:30 pm-10:45 am

2 stops13h 15m

London Heathrow

Tue 5/5

8:40 am-7:52 pm

2 stops17h 12m

$684

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Sun 4/26

8:15 am-7:15 am

1 stop17h 00m

Manchester

Sun 5/3

5:55 am-6:52 pm

2 stops18h 57m

$685

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/4

Showing 1-10 of 60 resultsSorted by cheapest first
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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, June is the cheapest month in which you can book a flight from Illinois to United Kingdom (average of $62). 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 March 6, 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.

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 8h 20m. Scandinavian Airlines provides one of the quickest options available for as low as $659. The distance from Illinois to United Kingdom is about 3939 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 $181 on Icelandair. Other airlines that offer cheap prices include British Airways from $211 and Scandinavian Airlines from $214 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, June is the cheapest month in which you can book a flight from Illinois to United Kingdom (average of $62). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.

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 March 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$749FlexibilityNo cancel feeOn-time62%
SWISSCheapest$257Average$603FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$321Average$625FlexibilityNo cancel feeOn-time77%
DeltaCheapest$345Average$959FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$427Average$689FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$467Average$672FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$481Average$857FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$516Average$793FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$522Average$809FlexibilityNo cancel feeOn-time75%
Air EuropaCheapest$533Average$636FlexibilityNo cancel feeOn-time83%

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