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$231+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
nov. 22 — nov. 291
sáb. 11/22
sáb. 11/29
1 adult, Economy
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Cheap 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 octubre 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$466
(Mytrip)

One-way from

$231
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$670

Good round-trip deal

$691 or less

Good one-way deal

$449 or less
Provider with most accurate pricing for Chicago (CHI)-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-London (LON) flights.
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From Illinois to United Kingdom
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One-way flight from Illinois to United Kingdom
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Highest demand for flights based on searches. 21% potential increase in price ($202 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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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Find 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 octubre 23, 2025.

This Mytrip deal was found by Cheapflights users on 10/21. 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.
vie. 12/56:30 pmORD - EDI
2 stops14h 25mMultiple Airlines
vie. 12/1210:55 pmEDI - ORD
2 stops24h 25mMultiple Airlines
Deal found 10/21$466
This CrystalTravel deal was found by Cheapflights users on 10/21. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/16:30 pmORD - EDI
1 stop9h 50mIcelandair
vie. 12/511:30 amEDI - ORD
1 stop11h 50mIcelandair
Deal found 10/21$477
This Mytrip deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/76:30 pmORD - EDI
2 stops22h 30mMultiple Airlines
dom. 12/146:00 amEDI - ORD
2 stops17h 20mMultiple Airlines
Deal found 10/23$509
This Mytrip deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/16:30 pmORD - EDI
2 stops19h 45mMultiple Airlines
lun. 12/810:30 pmEDI - ORD
2 stops24h 50mMultiple Airlines
Deal found 10/23$517
This KAYAK deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/296:30 pmORD - EDI
1 stop9h 50mIcelandair
mar. 12/912:20 pmEDI - ORD
1 stop11h 00mIcelandair
Deal found 10/22$519
This Gurufare deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/16:30 pmORD - EDI
1 stop9h 50mIcelandair
jue. 12/1111:20 amEDI - ORD
1 stop12h 00mIcelandair
Deal found 10/22$527
This KAYAK deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/126:30 pmORD - EDI
1 stop9h 50mIcelandair
mar. 11/1812:20 pmEDI - ORD
1 stop11h 00mIcelandair
Deal found 10/22$529
This oojo deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/256:30 pmORD - LHR
1 stop10h 20mIcelandair
mar. 12/28:35 pmLHR - ORD
1 stop26h 45mIcelandair
Deal found 10/23$532
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/36:30 pmORD - LTN
1 stop20h 20mMultiple Airlines
mar. 12/97:00 amLTN - ORD
1 stop16h 20mMultiple Airlines
Deal found 10/22$532
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
lun. 11/105:57 pmORD - LGW
2 stops30h 03mMultiple Airlines
lun. 11/171:00 pmLGW - ORD
1 stop29h 45mMultiple Airlines
Deal found 10/21$533
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/243:50 pmORD - STN
2 stops23h 05mMultiple Airlines
mar. 12/29:20 pmSTN - ORD
2 stops26h 35mMultiple Airlines
Deal found 10/22$533
This FlightHub deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/106:30 pmORD - EDI
1 stop9h 50mIcelandair
vie. 11/1411:30 amEDI - ORD
1 stop11h 50mIcelandair
Deal found 10/22$533

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 octubre 23, 2025.
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

dom. 1/11

6:30 pm-6:35 pm

2 stops18h 05m

London Stansted

dom. 1/18

3:00 pm-5:20 pm

2 stops32h 20m

$547

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

vie. 11/7

7:20 pm-8:55 am

2 stops31h 35m

London Heathrow

lun. 11/10

7:05 am-4:45 pm

2 stops15h 40m

$550

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

mié. 12/3

7:05 am-9:05 pm

3 stops32h 00m

London Stansted

mar. 12/9

9:45 pm-1:10 pm

2 stops21h 25m

$552

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

lun. 12/1

3:50 pm-7:50 am

1 stop10h 00m

London Stansted

mié. 12/10

6:30 am-2:00 pm

1 stop13h 30m

$552

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

mié. 11/5

6:50 pm-10:50 pm

2 stops22h 00m

London Stansted

mié. 11/12

6:30 am-8:05 pm

2 stops19h 35m

$553

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 1/13

10:40 am-5:40 pm

2 stops25h 00m

London Heathrow

dom. 1/18

6:40 am-4:55 pm

2 stops16h 15m

$566

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 11/18

10:35 am-6:30 pm

2 stops25h 55m

London Heathrow

lun. 11/24

7:05 am-4:45 pm

2 stops15h 40m

$576

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 10/27

1:08 pm-10:15 am

1 stop16h 07m

London Heathrow

mar. 11/4

9:00 am-3:10 pm

1 stop12h 10m

$583

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 10/28

6:10 pm-6:55 am

Nonstop7h 45m

London Heathrow

mar. 11/4

11:00 am-1:50 pm

Nonstop8h 50m

$586

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 12/2

4:06 pm-9:40 am

1 stop11h 34m

London Heathrow

mar. 12/9

11:00 am-1:50 pm

Nonstop8h 50m

$590

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

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, May is the cheapest month in which you can book a flight from Illinois to United Kingdom (average of $396). 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 octubre 23, 2025.

One of the essential ways to save on airfare from Illinois to United Kingdom is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 31% on airfare.

What is the cheapest day to fly from Illinois to United Kingdom?

Use this chart to determine the cheapest time to fly round-trip from Illinois to United Kingdom. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to United Kingdom flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 30m. Scandinavian Airlines provides one of the quickest options available for as low as $593. The distance from Illinois to United Kingdom is about 3942 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 $270 on JetBlue. Other airlines that offer cheap prices include Scandinavian Airlines from $344 and Virgin Atlantic from $389 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, May is the cheapest month in which you can book a flight from Illinois to United Kingdom (average of $396). 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

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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 octubre 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$797FlexibilityNo cancel feeOn-time62%
SWISSCheapest$257Average$626FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$338Average$594FlexibilityNo cancel feeOn-time77%
DeltaCheapest$345Average$1,046FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$430Average$941FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$450Average$660FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$479Average$667FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$487Average$677FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$502Average$850FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$502Average$826FlexibilityNo cancel feeOn-timeN/A

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