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$234+ Cheap flights from Chicago (CHI) 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LHR
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheap flight deals from Chicago to United Kingdom

Keep the following information in mind while searching for Chicago to United Kingdom flight deals. Data was last updated April 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$587
(Kiwi.com)

One-way from

$255
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$671

Good round-trip deal

$677 or less

Good one-way deal

$495 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 Chicago (CHI) to United Kingdom
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One-way flight from Chicago (CHI) to United Kingdom
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Highest demand for flights based on searches. 17% potential increase in price ($155 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Chicago (CHI) to United Kingdom.
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Price to beat on a one-way flight from Chicago (CHI) to United Kingdom.
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Find flight deals from Chicago to United Kingdom

Cheapest flights from Chicago to United Kingdom
Explore the most affordable flight options available from Chicago to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/710:15 pmORD - MAN
1 stop31h 25mMultiple Airlines
Mon 5/125:25 pmMAN - ORD
2 stops44h 02mMultiple Airlines
Deal found 4/14$587
This Gotogate deal was found by Cheapflights users on 4/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/710:15 pmORD - MAN
1 stop31h 25mIcelandair
Wed 5/141:05 pmMAN - ORD
1 stop14h 10mIcelandair
Deal found 4/13$589
This Flightnetwork deal was found by Cheapflights users on 4/14. 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 5/59:15 pmORD - LHR
Nonstop7h 45mIberia
Wed 5/143:30 pmLHR - ORD
Nonstop8h 45mIberia
Deal found 4/14$596
This Icelandair deal was found by Cheapflights users on 4/14. 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 5/410:15 pmORD - LGW
1 stop31h 30mIcelandair
Mon 5/123:40 pmLGW - ORD
1 stop32h 35mIcelandair
Deal found 4/14$596
This Scandinavian Airlines deal was found by Cheapflights users on 4/14. 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 10/197:15 pmORD - LHR
1 stop14h 45mScandinavian Airlines
Sun 10/266:40 pmLHR - ORD
1 stop28h 05mScandinavian Airlines
Deal found 4/14$597
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/710:15 pmORD - LGW
1 stop10h 25mMultiple Airlines
Tue 5/1310:00 amLGW - ORD
1 stop37h 41mMultiple Airlines
Deal found 4/13$597
This American Airlines deal was found by Cheapflights users on 4/14. 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.
Sun 4/2711:52 amORD - LGW
1 stop16h 48mAmerican Airlines
Tue 5/63:05 pmLGW - ORD
1 stop26h 04mAmerican Airlines
Deal found 4/14$598
This Gotogate deal was found by Cheapflights users on 4/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/43:35 pmORD - LHR
1 stop12h 25mMultiple Airlines
Thu 5/227:00 amLHR - ORD
2 stops14h 55mMultiple Airlines
Deal found 4/13$601
This FlightHub deal was found by Cheapflights users on 4/12. 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.
Sun 9/710:15 pmORD - LHR
1 stop16h 05mIcelandair
Thu 9/189:25 pmLHR - ORD
1 stop29h 50mIcelandair
Deal found 4/12$602
This United Airlines deal was found by Cheapflights users on 4/14. 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.
Wed 4/304:05 pmORD - LHR
Nonstop8h 15mUnited Airlines
Wed 5/78:40 amLHR - ORD
1 stop13h 15mUnited Airlines
Deal found 4/14$604
This Gotogate deal was found by Cheapflights users on 4/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/272:20 pmORD - LHR
1 stop11h 35mSWISS
Tue 5/66:40 pmLHR - ORD
1 stop27h 15mSWISS
Deal found 4/13$606
This Mytrip deal was found by Cheapflights users on 4/14. 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 5/69:35 amORD - STN
2 stops31h 20mMultiple Airlines
Thu 5/156:55 amSTN - ORD
2 stops33h 59mMultiple Airlines
Deal found 4/14$609

Cheapflights Fare Finder

Customize your flight search to find flights from Chicago 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 April 15, 2025.
Use the filters below to find and compare flights from Chicago to the United Kingdom that are best for you.

Fly from

Chicago

Fly to

United Kingdom

Route

Depart

Return

Price

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Wed 5/7

10:15 pm-11:40 am

1 stop31h 25m

Manchester

Mon 5/12

5:25 pm-7:27 am

2 stops44h 02m

$587

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Wed 5/7

10:15 pm-11:40 am

1 stop31h 25m

Manchester

Wed 5/14

1:05 pm-9:15 pm

1 stop14h 10m

$589

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 5/5

9:15 pm-11:00 am

Nonstop7h 45m

London Heathrow

Wed 5/14

3:30 pm-6:15 pm

Nonstop8h 45m

$596

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 5/4

10:15 pm-11:45 am

1 stop31h 30m

London Gatwick

Mon 5/12

3:40 pm-6:15 pm

1 stop32h 35m

$596

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 5/5

6:30 pm-11:50 am

1 stop11h 20m

London Heathrow

Wed 5/14

8:40 am-3:55 pm

1 stop13h 15m

$597

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 5/7

10:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

Tue 5/13

10:00 am-5:41 pm

1 stop37h 41m

$597

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 4/27

11:52 am-10:40 am

1 stop16h 48m

London Gatwick

Tue 5/6

3:05 pm-11:09 am

1 stop26h 04m

$598

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 4/30

4:05 pm-6:20 am

Nonstop8h 15m

London Heathrow

Wed 5/7

8:40 am-3:55 pm

1 stop13h 15m

$604

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 4/27

2:20 pm-7:55 am

1 stop11h 35m

London Heathrow

Tue 5/6

6:40 pm-3:55 pm

1 stop27h 15m

$606

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Mon 4/28

3:30 pm-8:35 am

1 stop11h 05m

Manchester

Tue 5/6

2:15 pm-9:55 pm

1 stop13h 40m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

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

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Chicago 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 Chicago to the United Kingdom

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

Currently, November is the cheapest month in which you can book a flight from Chicago to United Kingdom (average of $661). Flying from Chicago to United Kingdom in June is currently the most expensive (average of $1,110). 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 CHI to GB?

Find hourly flight availability from Chicago 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 April 15, 2025.

When flying from Chicago to United Kingdom, 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 Chicago to United Kingdom

Explore weekly flight availability from Chicago 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 April 15, 2025.

The most flights from CHI to GB0 are scheduled on a Monday (57 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (48 on average).

Rainfall in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in United Kingdom ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit United Kingdom when rainfall is around 1.6 in.

Temperature in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average temperature totals by month.

If weather is an important factor for your trip to United Kingdom, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated April 15, 2025.
Read through reviews of airlines operating flights from Chicago to United Kingdom, such as Delta, KLM and Finnair. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,917 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
775 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,433 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

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

    The cheapest airlines for a one-way flight from Chicago to United Kingdom are Icelandair ($263), TAP AIR PORTUGAL ($277), and JetBlue ($340).

  • What are the most popular routes from Chicago to United Kingdom?

    While some choose either Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City, Chicago O'Hare Intl - London Heathrow is the most popular route from Chicago to United Kingdom.

  • What are the most reliable airlines from Chicago to United Kingdom?

    Consider Royal Jordanian (100%), Gulf Air (92%) or Malaysia Airlines (86%) when booking your flight. These represent the most reliable airlines when flying from Chicago to United Kingdom.

  • What are the cheapest flights from Chicago to United Kingdom?

    While on average a flight from Chicago to United Kingdom is generally $2,643, our data shows the cheapest flight currently is $408. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $502 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago 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 Chicago to United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from Chicago to United Kingdom (average of $661). Flying from Chicago to United Kingdom in June is currently the most expensive (average of $1,110). 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 Chicago 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 Chicago to United Kingdom

Discover the top 10 airlines that operate flights from Chicago 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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$257Average$695FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$381Average$595FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$467Average$899FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$468Average$654FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$506Average$774FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$516Average$757FlexibilityNo cancel feeOn-time62%
Aer LingusCheapest$543Average$798FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$554Average$938FlexibilityNo cancel feeOn-time67%
FinnairCheapest$559Average$724FlexibilityNo cancel feeOn-time76%
KLMCheapest$571Average$833FlexibilityNo cancel feeOn-time75%

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