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Cheap flights from the United Kingdom to Chicago from £214

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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
16 Jul — 23 Jul1
1 adult

Cheap flight deals from United Kingdom to Chicago

Keep the following information in mind while searching for United Kingdom to Chicago flight deals. Data was last updated 11 July 2025.

Round-trip from

£408

One-way from

£214

Popular in

August

Cheapest in

February

Average price

£648

Good round-trip deal

£541 or less

Good one-way deal

£598 or less
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 23/10-31/10
  • 2 total stops
  • 67h 10m total
  • United Kingdom to Chicago
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30/9
  • 30/9
  • 3 total stops
  • 55h 18m total
  • United Kingdom to Chicago
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£53 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from United Kingdom to Chicago (CHI).
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Price to beat on a one-way flight from United Kingdom to Chicago (CHI).
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Find flight deals from United Kingdom to Chicago

Cheapest flights from United Kingdom to Chicago
Explore the most affordable flight options available from United Kingdom to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Thu 23/1010:35LGW - ORD
1 stop35h 35mTAP AIR PORTUGAL
Fri 31/1021:15ORD - LGW
1 stop31h 35mTAP AIR PORTUGAL
Deal found 10/7£408
Mon 1/1219:50LHR - ORD
2 stops50h 55mScandinavian Airlines
Sun 11/119:10ORD - LHR
1 stop14h 50mScandinavian Airlines
Deal found 10/7£408
Sun 24/818:45LHR - ORD
1 stop27h 55mTAP AIR PORTUGAL
Sun 31/818:00ORD - LHR
1 stop17h 45mTAP AIR PORTUGAL
Deal found 10/7£409
Mon 1/915:40LGW - ORD
1 stop11h 35mIcelandair
Mon 3/1118:30ORD - LGW
1 stop10h 25mIcelandair
Deal found 9/7£410
Sat 20/909:50LGW - ORD
2 stops24h 56mMultiple Airlines
Mon 29/910:27ORD - LGW
1 stop14h 28mMultiple Airlines
Deal found 9/7£411
Sat 6/906:30LHR - ORD
1 stop14h 25mLufthansa
Sun 14/916:00ORD - LHR
Nonstop8h 20mLufthansa
Deal found 10/7£411
Sat 6/921:25LHR - ORD
1 stop29h 50mIcelandair
Fri 12/922:15ORD - LHR
1 stop16h 05mIcelandair
Deal found 10/7£411
Thu 18/909:50LHR - ORD
1 stop11h 55mBritish Airways
Tue 30/916:55ORD - LHR
Nonstop7h 55mBritish Airways
Deal found 9/7£413
Tue 16/915:05LGW - ORD
1 stop24h 10mAmerican Airlines
Fri 26/913:59ORD - LGW
1 stop12h 11mAmerican Airlines
Deal found 11/7£417
Wed 10/908:40LHR - ORD
1 stop13h 15mMultiple Airlines
Sun 21/916:00ORD - LHR
Nonstop8h 20mMultiple Airlines
Deal found 10/7£417
Mon 15/911:35LGW - ORD
2 stops27h 40mBritish Airways
Mon 22/913:59ORD - LGW
1 stop12h 11mBritish Airways
Deal found 11/7£418
Mon 8/906:00LHR - ORD
1 stop15h 55mSWISS
Mon 15/919:05ORD - LHR
1 stop16h 45mSWISS
Deal found 9/7£419

Cheapflights Fare Finder

Customise your flight search to find flights from United Kingdom to Chicago 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 858,174 searches. Data last updated 11 July 2025.
Use the filters below to find and compare flights from the United Kingdom to Chicago that are best for you.

Fly from

United Kingdom

Fly to

Chicago

Route

Depart

Return

Price

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 23/10

10:35-16:10

1 stop35h 35m

Chicago O'Hare Intl

Fri 31/10

21:15-09:50

1 stop31h 35m

£408

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 1/12

19:50-16:45

2 stops50h 55m

Chicago O'Hare Intl

Wed 14/1

19:20-16:00

1 stop14h 40m

£408

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 24/8

18:45-16:40

1 stop27h 55m

Chicago O'Hare Intl

Sun 31/8

18:00-17:45

1 stop17h 45m

£409

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 1/9

15:40-21:15

1 stop11h 35m

Chicago O'Hare Intl

Mon 3/11

18:30-10:55

1 stop10h 25m

£410

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sat 20/9

09:50-04:46

2 stops24h 56m

Chicago O'Hare Intl

Mon 29/9

10:27-06:55

1 stop14h 28m

£411

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/9

08:30-14:55

1 stop12h 25m

Chicago O'Hare Intl

Sat 13/9

21:25-11:45

Nonstop8h 20m

£411

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/9

21:25-21:15

1 stop29h 50m

Chicago O'Hare Intl

Fri 12/9

22:15-20:20

1 stop16h 05m

£411

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 18/9

09:50-15:45

1 stop11h 55m

Chicago O'Hare Intl

Tue 30/9

16:55-06:50

Nonstop7h 55m

£413

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 16/9

15:05-09:15

1 stop24h 10m

Chicago O'Hare Intl

Fri 26/9

13:59-08:10

1 stop12h 11m

£417

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/9

08:40-15:55

1 stop13h 15m

Chicago O'Hare Intl

Sun 21/9

16:00-06:20

Nonstop8h 20m

£417

Flights are sorted by cheapest return flights first.

Deals found on 10/7

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

Have a flexible travel schedule? Discover the best time to fly to Chicago from United Kingdom with our price prediction graph.
Estimated return 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 the United Kingdom to Chicago

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

Currently, January is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of £595). Flying from United Kingdom to Chicago in July is currently the most expensive (average of £843). 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 GB to CHI?

Find hourly flight availability from United Kingdom to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Chicago as you normally would.

Weekly flight availability from United Kingdom to Chicago

Explore weekly flight availability from United Kingdom to Chicago. 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 11 July 2025.

The most flights from GB0 to CHI are scheduled on a Monday (53 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (48 on average).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated 11 July 2025.
Read reviews from past customers who have flown with Delta, KLM, andAir Transat from the United Kingdom to Chicago. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,951 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air Transat
7.8
Good
412 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
811 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,312 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Chicago. 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 United Kingdom to Chicago one-way?

    One-way options have recently been found by users for as low as £394 on Aer Lingus. Other airlines that offer cheap prices include Icelandair from £404 and TAP AIR PORTUGAL from £433 one-way.

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

    The most popular flight routes from United Kingdom to Chicago are London Heathrow - Chicago O'Hare Intl, London Heathrow - Chicago Midway and London Gatwick - Chicago O'Hare Intl.

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

    No one likes to see their flight delayed. When booking a flight from United Kingdom to Chicago consider choosing Air Canada (89%), Austrian Airlines (89%) or United Airlines (89%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from United Kingdom to Chicago? While on average our users pay £1,826, our data indicates the cheapest price to be £402. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £375.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of £595). Flying from United Kingdom to Chicago in July is currently the most expensive (average of £843). 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 United Kingdom to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to O'Hare Intl flights
Heathrow to Midway flights
Gatwick to O'Hare Intl flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
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Manchester to O'Hare Intl flights
Manchester to Midway flights
Edinburgh to O'Hare Intl flights
Gatwick to Midway flights
Heathrow to St. Louis flights
Gatwick to St. Louis flights
London City to Midway flights
Birmingham to O'Hare Intl flights
Leeds to O'Hare Intl flights
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London City to St. Louis flights
Edinburgh to Midway flights
Frederic Chopin to O'Hare Intl flights
Birmingham to Midway flights
Glasgow Intl to O'Hare Intl flights
Dublin to O'Hare Intl flights
Newcastle upon Tyne to Midway flights
Istanbul to O'Hare Intl flights
Edinburgh to St. Louis flights
Leeds to Midway flights
Amsterdam to O'Hare Intl flights
Heathrow to Evansville flights
Glasgow Intl to Midway flights
Manchester to St. Louis flights
Heathrow to Moline flights
Glasgow Intl to St. Louis flights
Dublin to Midway flights
Bristol to O'Hare Intl flights
Heathrow to Dubuque flights
Bristol to Midway flights
Stansted to St. Louis flights
Newquay to O'Hare Intl flights
Luton to St. Louis flights
London City to Moline flights
Cardiff to O'Hare Intl flights
Exeter to O'Hare Intl flights
Inverness to O'Hare Intl flights
Heathrow to Springfield flights
Madrid to O'Hare Intl flights
Vienna to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights

Top 10 airlines flying from United Kingdom to Chicago

Discover the top 10 airlines that operate flights from United Kingdom to Chicago. 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 858,174 searches. Data last updated 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£310Average£549FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£323Average£632FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air FranceCheapest£333Average£604FlexibilityNo cancel feeOn-time77%
Search Air France flights
Scandinavian AirlinesCheapest£349Average£478FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£363Average£609FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£374Average£544FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£381Average£602FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£389Average£600FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
LufthansaCheapest£394Average£614FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£397Average£575FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to Chicago?

When you search for this flight from United Kingdom to Chicago, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Chicago?

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to Chicago by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from United Kingdom to Chicago with no change fees?

Need flexible booking options for your flight to Chicago from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from United Kingdom to Chicago become cheaper?

Yes, Cheapflights offers price alerts on United Kingdom to Chicago flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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