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$74+ Cheap flights from Chicago (CHI) to the United Kingdom

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LHR
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$74
(123 Milhas)

Popular in

June

Cheapest in

February

Average price

$651

Good round-trip deal

$659 or less

Good one-way deal

$457 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
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($178 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Mytrip deal was found by Cheapflights users on 2/20. 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.
Tue 4/87:30 pmORD - MAN
1 stop10h 10mIcelandair
Tue 4/151:05 pmMAN - ORD
1 stop11h 15mIcelandair
Deal found 2/20$517
This Expedia deal was found by Cheapflights users on 2/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/283:45 pmORD - GLA
1 stop10h 20mAer Lingus
Thu 5/88:35 amGLA - ORD
1 stop16h 25mAer Lingus
Deal found 2/20$522
This lol.travel deal was found by Cheapflights users on 2/19. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/307:30 pmORD - GLA
1 stop9h 20mIcelandair
Tue 4/152:20 pmGLA - ORD
1 stop10h 00mIcelandair
Deal found 2/19$539
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/23:45 pmORD - MAN
1 stop16h 05mAer Lingus
Wed 4/92:20 pmMAN - ORD
1 stop10h 40mAer Lingus
Deal found 2/19$554
This oojo deal was found by Cheapflights users on 2/19. 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.
Tue 4/227:15 pmORD - MAN
1 stop17h 15mScandinavian Airlines
Wed 4/307:10 pmMAN - ORD
1 stop27h 00mScandinavian Airlines
Deal found 2/19$565
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Mon 4/287:30 pmORD - GLA
1 stop11h 55mMultiple Airlines
Thu 5/88:00 amGLA - ORD
3 stops37h 42mMultiple Airlines
Deal found 2/20$574
This Scandinavian Airlines deal was found by Cheapflights users on 2/20. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/168:40 pmORD - LHR
2 stops17h 10mScandinavian Airlines
Sun 3/239:05 pmLHR - ORD
2 stops26h 45mScandinavian Airlines
Deal found 2/20$585
This Booking.com deal was found by Cheapflights users on 2/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/256:30 pmORD - LGW
1 stop10h 25mIcelandair
Wed 3/1211:55 amLGW - ORD
1 stop11h 25mIcelandair
Deal found 2/19$585
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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.
Wed 4/1610:20 pmORD - GLA
1 stop11h 15mBritish Airways
Tue 4/228:45 amGLA - ORD
1 stop13h 10mBritish Airways
Deal found 2/20$585
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Sun 4/67:15 pmORD - STN
2 stops20h 00mMultiple Airlines
Sun 4/1310:35 amSTN - ORD
2 stops35h 35mMultiple Airlines
Deal found 2/20$585
This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/14:55 pmORD - LHR
Nonstop7h 55mFinnair
Wed 4/2310:20 amLHR - ORD
1 stop13h 30mFinnair
Deal found 2/20$586
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/39:01 pmORD - LGW
2 stops27h 59mMultiple Airlines
Thu 4/242:00 pmLGW - ORD
1 stop15h 39mMultiple Airlines
Deal found 2/20$586

Find flights from Chicago to United Kingdom within your budget

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 February 20, 2025.

Fly from

Chicago

Fly to

United Kingdom

Route

Depart

Return

Price

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Tue 4/8

7:30 pm-11:40 am

1 stop10h 10m

Manchester

Tue 4/15

1:05 pm-6:20 pm

1 stop11h 15m

$517

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Mon 4/28

3:45 pm-8:05 am

1 stop10h 20m

Glasgow Intl

Thu 5/8

8:35 am-7:00 pm

1 stop16h 25m

$522

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Sun 3/30

7:30 pm-10:50 am

1 stop9h 20m

Glasgow Intl

Tue 4/15

2:20 pm-6:20 pm

1 stop10h 00m

$539

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Sun 3/2

7:40 pm-6:35 pm

1 stop16h 55m

Manchester

Sun 3/9

7:15 pm-6:50 pm

1 stop28h 35m

$559

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Mon 4/28

7:30 pm-1:25 pm

1 stop11h 55m

Glasgow Intl

Thu 5/8

8:00 am-3:42 pm

3 stops37h 42m

$574

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Sun 3/2

7:40 pm-4:45 pm

1 stop15h 05m

Manchester

Mon 3/10

8:10 am-3:00 pm

1 stop11h 50m

$580

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Sun 3/30

2:20 pm-12:50 pm

1 stop16h 30m

Manchester

Mon 4/7

6:40 pm-12:10 pm

1 stop23h 30m

$584

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 3/30

6:00 pm-3:10 pm

1 stop15h 10m

London Gatwick

Tue 4/8

4:25 pm-4:10 pm

1 stop29h 45m

$585

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Wed 4/16

10:20 pm-3:35 pm

1 stop11h 15m

Glasgow Intl

Tue 4/22

8:45 am-3:55 pm

1 stop13h 10m

$585

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sun 4/6

7:15 pm-9:15 pm

2 stops20h 00m

London Stansted

Sun 4/13

10:35 am-4:10 pm

2 stops35h 35m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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.

Travel insights for flights from Chicago to United Kingdom

Get recent, data-driven insights about flights from Chicago to United Kingdom including ideal travel times, pricing trends, and more.

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 $1,136). 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 February 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 February 20, 2025.

The most flights from CHI to GB0 are scheduled on a Wednesday (38 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 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 February 20, 2025.
Read through reviews of airlines operating flights from Chicago to United Kingdom, such as Delta, Alaska Airlines and KLM. 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
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

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
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

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.

Alaska Airlines
8.0
Very good
9,692 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

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
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

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
1,273 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

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.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

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 ($213), JetBlue ($269), and TAP AIR PORTUGAL ($308).

  • 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 Aer Lingus (80%), Air Canada (74%) or Austrian Airlines (74%) 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 $1,383, our data shows the cheapest flight currently is $393. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $505 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 $1,136). 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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Midway to Lisbon flights
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Midway to Keflavik Intl flights
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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$381Average$586FlexibilityNo cancel feeOn-time77%
DeltaCheapest$451Average$950FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$464Average$647FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$506Average$812FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$516Average$679FlexibilityNo cancel feeOn-time62%
Aer LingusCheapest$543Average$825FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$544Average$935FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$554Average$912FlexibilityNo cancel feeOn-time67%
FinnairCheapest$566Average$748FlexibilityNo cancel feeOn-time76%
KLMCheapest$571Average$855FlexibilityNo cancel feeOn-time75%
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