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$225+ 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
mar. 31 — abr. 71
lun. 3/31
lun. 4/7
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 marzo 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$537
(oojo)

One-way from

$225
(oojo)

Popular in

June

Cheapest in

February

Average price

$710

Good round-trip deal

$672 or less

Good one-way deal

$480 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. 18% potential increase in price ($172 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 March 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 marzo 26, 2025.

This oojo deal was found by Cheapflights users on 3/25. 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.
vie. 5/210:15 pmORD - MAN
1 stop31h 25mIcelandair
vie. 5/91:05 pmMAN - ORD
1 stop11h 10mIcelandair
Deal found 3/25$537
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
mié. 4/307:25 pmORD - MAN
1 stop10h 15mMultiple Airlines
jue. 5/811:25 amMAN - ORD
2 stops38h 42mMultiple Airlines
Deal found 3/25$548
This oojo deal was found by Cheapflights users on 3/25. 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.
dom. 10/127:15 pmORD - MAN
2 stops18h 30mScandinavian Airlines
lun. 10/2710:10 amMAN - ORD
1 stop12h 35mScandinavian Airlines
Deal found 3/25$574
This Scandinavian Airlines deal was found by Cheapflights users on 3/24. 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.
lun. 5/57:15 pmORD - LHR
1 stop17h 15mScandinavian Airlines
lun. 5/127:05 amLHR - ORD
2 stops15h 05mScandinavian Airlines
Deal found 3/24$588
This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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.
dom. 5/45:45 pmORD - LHR
Nonstop7h 35mIberia
vie. 5/162:25 pmLHR - ORD
Nonstop8h 35mIberia
Deal found 3/24$589
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
dom. 4/2710:15 pmORD - LGW
1 stop10h 25mMultiple Airlines
jue. 5/152:00 pmLGW - ORD
1 stop15h 32mMultiple Airlines
Deal found 3/25$590
This oojo deal was found by Cheapflights users on 3/25. 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. 10/86:00 pmORD - LHR
1 stop18h 50mTAP AIR PORTUGAL
mié. 10/226:45 pmLHR - ORD
1 stop23h 50mTAP AIR PORTUGAL
Deal found 3/25$591
This oojo deal was found by Cheapflights users on 3/25. 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.
vie. 10/310:15 pmORD - LGW
1 stop10h 25mIcelandair
dom. 10/123:40 pmLGW - ORD
1 stop11h 35mIcelandair
Deal found 3/25$591
This Mytrip deal was found by Cheapflights users on 3/25. 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.
jue. 5/17:15 pmORD - STN
3 stops23h 30mMultiple Airlines
mié. 5/149:05 pmSTN - ORD
2 stops25h 05mMultiple Airlines
Deal found 3/25$593
This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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. 4/224:00 pmORD - LHR
1 stop13h 50mAir Canada
dom. 4/275:40 pmLHR - ORD
1 stop21h 15mAir Canada
Deal found 3/24$594
This oojo deal was found by Cheapflights users on 3/25. 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.
vie. 10/310:15 pmORD - LHR
1 stop16h 05mIcelandair
dom. 10/121:05 pmLHR - ORD
1 stop14h 10mIcelandair
Deal found 3/25$595
This Travelocity deal was found by Cheapflights users on 3/25. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/233:45 pmORD - LHR
1 stop11h 20mAer Lingus
mié. 4/301:25 pmLHR - ORD
1 stop11h 35mAer Lingus
Deal found 3/25$604

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 marzo 26, 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

vie. 5/2

10:15 pm-11:40 am

1 stop31h 25m

Manchester

vie. 5/9

1:05 pm-6:15 pm

1 stop11h 10m

$537

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

mié. 4/30

7:25 pm-11:40 am

1 stop10h 15m

Manchester

jue. 5/8

11:25 am-8:07 pm

2 stops38h 42m

$548

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 5/5

7:15 pm-6:30 pm

1 stop17h 15m

London Heathrow

lun. 5/12

7:05 am-4:10 pm

2 stops15h 05m

$588

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom. 5/4

5:45 pm-7:20 am

Nonstop7h 35m

London Heathrow

mié. 5/14

12:15 pm-2:40 pm

Nonstop8h 25m

$589

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

dom. 4/27

10:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

jue. 5/15

2:00 pm-11:32 pm

1 stop15h 32m

$590

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mié. 4/23

3:45 pm-8:00 am

1 stop10h 15m

London Heathrow

mié. 5/7

1:25 pm-7:00 pm

1 stop11h 35m

$592

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

lun. 4/7

7:30 pm-11:45 am

1 stop10h 15m

London Gatwick

mar. 4/15

3:40 pm-6:15 pm

1 stop32h 35m

$593

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 4/22

4:00 pm-11:50 am

1 stop13h 50m

London Heathrow

dom. 4/27

5:40 pm-8:55 am

1 stop21h 15m

$594

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

mar. 4/22

10:20 pm-3:15 pm

1 stop10h 55m

Manchester

mar. 4/29

8:40 am-2:45 pm

1 stop12h 05m

$614

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 4/7

4:55 pm-6:50 am

Nonstop7h 55m

London Heathrow

mar. 4/15

11:05 am-1:50 pm

Nonstop8h 45m

$617

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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 $1,115). 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 marzo 26, 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.

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 marzo 26, 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.
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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
7,891 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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
1,318 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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.
LOT
7.6
Good
1,061 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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
1,266 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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
7.5
Good
769 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

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 ($225), JetBlue ($274), and TAP AIR PORTUGAL ($277).

  • 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 (87%), Air Canada (80%) or Austrian Airlines (80%) 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 $2,918, our data shows the cheapest flight currently is $402. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $294 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 $1,115). 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 marzo 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$257Average$695FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$381Average$599FlexibilityNo cancel feeOn-time77%
DeltaCheapest$451Average$953FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$466Average$650FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$506Average$765FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$516Average$757FlexibilityNo cancel feeOn-time62%
Aer LingusCheapest$543Average$800FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$547Average$900FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$554Average$938FlexibilityNo cancel feeOn-time67%
FinnairCheapest$560Average$730FlexibilityNo cancel feeOn-time76%
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