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$220+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LHR
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$465
(Mytrip)

One-way from

$220
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$670

Good round-trip deal

$705 or less

Good one-way deal

$436 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. 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 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 October 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/29. 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 12/76:30 pmORD - EDI
2 stops21h 35mMultiple Airlines
Sun 12/148:00 amEDI - ORD
2 stops15h 20mMultiple Airlines
Deal found 10/29$465
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Thu 11/276:30 pmORD - GLA
1 stop9h 25mIcelandair
Wed 12/1012:35 pmGLA - ORD
1 stop10h 45mIcelandair
Deal found 10/28$486
This oojo deal was found by Cheapflights users on 10/28. 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.
Sun 11/306:30 pmORD - GLA
1 stop9h 25mIcelandair
Fri 12/512:35 pmGLA - ORD
1 stop10h 45mIcelandair
Deal found 10/28$488
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Wed 12/36:30 pmORD - GLA
2 stops20h 30mMultiple Airlines
Mon 12/811:35 pmGLA - ORD
2 stops23h 45mMultiple Airlines
Deal found 10/28$489
This Mytrip deal was found by Cheapflights users on 10/27. 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.
Wed 12/36:30 pmORD - EDI
2 stops20h 00mMultiple Airlines
Tue 12/98:40 amEDI - ORD
2 stops14h 40mMultiple Airlines
Deal found 10/27$494
This Mytrip deal was found by Cheapflights users on 10/29. 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 12/26:30 pmORD - MAN
2 stops22h 05mMultiple Airlines
Tue 12/97:35 amMAN - ORD
2 stops15h 45mMultiple Airlines
Deal found 10/29$504
This Cheapflightsfares deal was found by Cheapflights users on 10/30. 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.
Tue 11/116:30 pmORD - GLA
1 stop9h 25mIcelandair
Tue 11/1812:35 pmGLA - ORD
1 stop10h 45mIcelandair
Deal found 10/30$505
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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.
Thu 11/276:30 pmORD - GLA
1 stop9h 25mIcelandair
Thu 12/412:35 pmGLA - ORD
1 stop10h 45mIcelandair
Deal found 10/28$510
This Mytrip deal was found by Cheapflights users on 10/29. 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.
Fri 11/286:30 pmORD - EDI
2 stops20h 35mMultiple Airlines
Fri 12/510:55 pmEDI - ORD
2 stops24h 25mMultiple Airlines
Deal found 10/29$517
This oojo deal was found by Cheapflights users on 10/30. 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.
Wed 12/106:30 pmORD - MAN
1 stop10h 15mIcelandair
Sun 12/1411:55 amMAN - ORD
1 stop11h 25mIcelandair
Deal found 10/30$521
This Mytrip deal was found by Cheapflights users on 10/30. 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.
Wed 12/106:30 pmORD - MAN
3 stops34h 05mMultiple Airlines
Sun 12/146:30 amMAN - ORD
2 stops16h 50mMultiple Airlines
Deal found 10/30$533
This CrystalTravel deal was found by Cheapflights users on 10/30. 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.
Mon 12/17:20 pmORD - LHR
1 stop20h 20mScandinavian Airlines
Mon 12/156:40 amLHR - ORD
1 stop16h 05mScandinavian Airlines
Deal found 10/30$535

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 October 30, 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

Wed 12/3

6:30 pm-9:55 am

1 stop9h 25m

Glasgow Intl

Tue 12/9

12:35 pm-5:20 pm

1 stop10h 45m

$505

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Sun 1/25

6:30 pm-10:45 am

1 stop10h 15m

Manchester

Wed 2/11

11:55 am-5:20 pm

1 stop11h 25m

$522

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Sun 1/25

6:30 pm-10:45 am

1 stop10h 15m

Manchester

Tue 2/10

11:55 am-5:20 pm

1 stop11h 25m

$522

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Wed 1/28

6:30 pm-10:45 am

1 stop10h 15m

Manchester

Thu 2/12

11:55 am-5:20 pm

1 stop11h 25m

$522

ChicagoManchester

ORD - MAN

ORDMAN

Chicago O'Hare Intl

Wed 3/4

7:30 am-9:30 am

2 stops20h 00m

Manchester

Tue 3/17

6:35 pm-5:45 pm

2 stops28h 10m

$532

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 2/9

10:24 am-9:20 am

2 stops16h 56m

London Heathrow

Fri 2/13

7:05 am-4:45 pm

2 stops15h 40m

$535

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 2/23

7:30 am-9:20 am

2 stops19h 50m

London Heathrow

Fri 2/27

7:05 am-4:45 pm

2 stops15h 40m

$535

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 11/26

7:20 pm-10:40 pm

2 stops21h 20m

London Stansted

Wed 12/3

6:25 pm-4:45 pm

2 stops28h 20m

$538

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 11/17

3:50 pm-8:35 am

1 stop10h 45m

London Luton

Sun 11/23

8:05 am-2:00 pm

1 stop11h 55m

$549

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Mon 11/17

7:40 pm-2:20 pm

1 stop12h 40m

London Stansted

Sun 11/23

8:30 am-2:00 pm

1 stop11h 30m

$549

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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, May is the cheapest month in which you can book a flight from Chicago to United Kingdom (average of $397). Flying from Chicago 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 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 October 30, 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago to United Kingdom in the evening. If you’re flexible enough to do this you can expect to save up to 31% on your trip compared to booking a flight in the afternoon.

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

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

Travelers seeking maximum savings on their Chicago 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.

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 October 30, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and Icelandair from Chicago to the United Kingdom to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,998 reviews
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,033 reviews
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Icelandair
7.1
Good
562 reviews
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Iberia
7.0
Good
3,001 reviews
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
British Airways
6.7
Okay
7,487 reviews
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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.

  • How long is the flight from Chicago to United Kingdom?

    For as low as $505, Icelandair can have you in United Kingdom from Chicago in 9h 25m. Airlines will cover a distance of 3663 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 TAP AIR PORTUGAL ($227), Scandinavian Airlines ($283), and JetBlue ($323).

  • 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 (80%), SriLankan Airlines (74%) or Gulf Air (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 $2,602, our data shows the cheapest flight currently is $394. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $429 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, May is the cheapest month in which you can book a flight from Chicago to United Kingdom (average of $397). Flying from Chicago 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 Chicago to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Heathrow flights
O'Hare Intl to Charles de Gaulle flights
O'Hare Intl to Frankfurt flights
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O'Hare Intl to Madrid flights
O'Hare Intl to Istanbul flights
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Midway to Leonardo da Vinci/Fiumicino flights
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O'Hare Intl to Frankfurt-Hahn flights
Midway to Madrid flights
Midway to Dublin flights
Midway to Barcelona-El Prat flights
O'Hare Intl to Katowice flights
Midway to Krakow flights
St. Louis to Heathrow flights
O'Hare Intl to Prague flights
Midway to Lisbon flights
O'Hare Intl to Berlin flights
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O'Hare Intl to Edinburgh flights
Midway to Frederic Chopin flights
O'Hare Intl to Bergamo flights
Midway to Malpensa flights
O'Hare Intl to Florence flights
Midway to Athens flights

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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$791FlexibilityNo cancel feeOn-time62%
SWISSCheapest$257Average$626FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$338Average$621FlexibilityNo cancel feeOn-time77%
DeltaCheapest$345Average$1,046FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$430Average$944FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$450Average$644FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$481Average$669FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$487Average$677FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$502Average$792FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$505Average$834FlexibilityNo cancel feeOn-timeN/A

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