United Kingdom

$183+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LHR
may. 25 — jun. 11
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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 mayo 20, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$603
(oojo)

One-way from

$183
(Flightnetwork)

Popular in

July

Cheapest in

February

Average price

$744

Good round-trip deal

$700 or less

Good one-way deal

$426 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 Chicago (CHI) to United Kingdom
One-way flight from Chicago (CHI) to United Kingdom
Highest demand for flights based on searches. 17% potential increase in price ($153 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Average for round-trip flights in May 2025
Price to beat on a round-trip flight from Chicago (CHI) to United Kingdom.
Price to beat on a one-way flight from Chicago (CHI) to United Kingdom.

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 mayo 20, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 5/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/29:15 pmORD - GLA
1 stop11h 25mBritish Airways
mar. 9/97:00 amGLA - ORD
1 stop12h 50mBritish Airways
Deal found 5/20$538
This oojo deal was found by Cheapflights users on 5/20. 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.
jue. 9/1810:15 pmORD - GLA
1 stop9h 10mIcelandair
mar. 9/302:20 pmGLA - ORD
1 stop9h 55mIcelandair
Deal found 5/20$542
This Iberia deal was found by Cheapflights users on 5/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/233:52 pmORD - GLA
2 stops16h 48mIberia
mié. 10/15:40 pmGLA - ORD
1 stop27h 10mIberia
Deal found 5/20$563
This Mytrip deal was found by Cheapflights users on 5/20. 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.
mar. 9/27:25 pmORD - GLA
1 stop12h 00mMultiple Airlines
mar. 9/910:35 pmGLA - ORD
2 stops26h 54mMultiple Airlines
Deal found 5/20$579
This oojo deal was found by Cheapflights users on 5/19. 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.
lun. 9/227:15 pmORD - LHR
1 stop14h 45mScandinavian Airlines
dom. 10/59:05 pmLHR - ORD
2 stops25h 05mScandinavian Airlines
Deal found 5/19$607
This oojo deal was found by Cheapflights users on 5/19. 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.
lun. 9/17:25 pmORD - LGW
1 stop10h 20mIcelandair
mar. 9/163:40 pmLGW - ORD
1 stop32h 35mIcelandair
Deal found 5/19$607
This oojo deal was found by Cheapflights users on 5/19. 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.
sáb. 8/1610:15 pmORD - LHR
1 stop16h 05mIcelandair
sáb. 8/239:25 pmLHR - ORD
1 stop29h 50mIcelandair
Deal found 5/19$611
This oojo deal was found by Cheapflights users on 5/19. 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.
mié. 8/2712:41 pmORD - LHR
1 stop14h 24mBritish Airways
lun. 9/158:00 pmLHR - ORD
1 stop24h 15mBritish Airways
Deal found 5/19$612
This Mytrip deal was found by Cheapflights users on 5/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/157:25 pmORD - LGW
2 stops17h 50mMultiple Airlines
dom. 9/2810:55 amLGW - ORD
1 stop30h 41mMultiple Airlines
Deal found 5/19$612
This Mytrip deal was found by Cheapflights users on 5/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/167:25 pmORD - STN
2 stops20h 30mMultiple Airlines
mar. 9/231:15 pmSTN - ORD
2 stops35h 00mMultiple Airlines
Deal found 5/19$616
This Mytrip deal was found by Cheapflights users on 5/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/167:25 pmORD - LTN
2 stops22h 10mMultiple Airlines
mar. 9/236:10 pmLTN - ORD
2 stops33h 05mMultiple Airlines
Deal found 5/19$618
This American Airlines deal was found by Cheapflights users on 5/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/235:45 pmORD - GLA
1 stop14h 55mAmerican Airlines
mar. 9/308:45 amGLA - ORD
1 stop15h 30mAmerican Airlines
Deal found 5/19$622

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 mayo 20, 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

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

lun. 6/2

10:15 pm-1:25 pm

1 stop9h 10m

Glasgow Intl

mié. 6/18

2:20 pm-6:15 pm

1 stop9h 55m

$603

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

sáb. 8/16

7:25 pm-11:45 am

1 stop10h 20m

London Gatwick

sáb. 8/23

3:40 pm-6:15 pm

1 stop32h 35m

$607

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 7/15

3:16 pm-7:50 am

1 stop10h 34m

London Heathrow

mar. 9/9

9:45 am-4:14 pm

1 stop12h 29m

$610

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

sáb. 8/16

10:15 pm-8:20 pm

1 stop16h 05m

London Heathrow

sáb. 8/23

9:25 pm-9:15 pm

1 stop29h 50m

$611

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom. 5/25

3:20 pm-7:50 am

1 stop10h 30m

London Heathrow

lun. 5/26

7:10 pm-2:15 pm

1 stop25h 05m

$612

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

lun. 6/16

7:56 am-10:00 am

1 stop20h 04m

London Gatwick

jue. 7/3

2:00 pm-8:23 pm

1 stop36h 23m

$616

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

vie. 8/15

8:40 am-9:20 pm

3 stops30h 40m

London Stansted

lun. 8/25

10:00 pm-8:16 pm

2 stops28h 16m

$623

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

mié. 8/13

3:45 pm-8:00 am

1 stop10h 15m

London Luton

vie. 8/22

11:30 am-7:00 pm

1 stop13h 30m

$625

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 8/4

5:40 pm-7:20 am

Nonstop7h 40m

London Heathrow

vie. 8/15

3:10 pm-11:22 pm

1 stop14h 12m

$628

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mié. 8/13

2:07 pm-6:30 am

1 stop10h 23m

London Heathrow

mié. 8/27

6:50 am-2:51 pm

2 stops14h 01m

$629

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/19

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 $1,097). 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 mayo 20, 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 mayo 20, 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 (45 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 mayo 20, 2025.
Read through reviews of airlines operating flights from Chicago to United Kingdom, such as Delta, KLM and LOT. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good
8.0
Very good

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 ($183), SWISS ($300), and TAP AIR PORTUGAL ($303).

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

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

    Consider Royal Jordanian (87%), Gulf Air (79%) or Air Canada (79%) 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 $2,706, our data shows the cheapest flight currently is $388. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $552 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 $1,097). 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 Chicago to United Kingdom

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

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 mayo 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$257Average$671FlexibilityNo cancel feeOn-time79%
DeltaCheapest$345Average$939FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$381Average$597FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$460Average$933FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$462Average$640FlexibilityNo cancel feeOn-time76%
JetBlueCheapest$505Average$854FlexibilityNo cancel feeOn-time62%
TAP AIR PORTUGALCheapest$507Average$772FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$543Average$784FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$554Average$725FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$554Average$935FlexibilityNo cancel feeOn-time67%

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