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Cheap flights from the United Kingdom to Chicago from £230

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
28 Apr — 5 May1
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 23 April 2025.

Round-trip from

£411

One-way from

£230

Popular in

August

Cheapest in

February

Average price

£502

Good round-trip deal

£538 or less

Good one-way deal

£533 or less
Austrian Airlines
  • Austrian Airlines
  • 5/5-12/5
  • 1 total stop
  • 24h 10m total
  • United Kingdom to Chicago
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3/6
  • 3/6
  • 2 total stops
  • 24h 07m total
  • United Kingdom to Chicago
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£59 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for round-trip flights in April 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 23 April 2025.

Mon 28/408:40LHR - ORD
1 stop13h 15mMultiple Airlines
Mon 5/518:05ORD - LHR
Nonstop8h 15mMultiple Airlines
Deal found 21/4£411
Sat 6/921:25LHR - ORD
1 stop29h 50mIcelandair
Mon 15/919:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 22/4£412
Wed 7/506:50LHR - ORD
1 stop11h 10mLufthansa
Thu 22/521:31ORD - LHR
2 stops26h 24mLufthansa
Deal found 22/4£413
Wed 7/518:35LGW - ORD
1 stop27h 20mSWISS
Wed 14/515:45ORD - LGW
1 stop20h 10mSWISS
Deal found 22/4£414
Thu 8/513:45LHR - ORD
1 stop32h 10mUnited Airlines
Fri 16/518:05ORD - LHR
Nonstop8h 15mUnited Airlines
Deal found 22/4£415
Fri 2/515:05LGW - ORD
1 stop26h 00mBritish Airways
Thu 8/511:45ORD - LGW
1 stop14h 25mBritish Airways
Deal found 22/4£416
Wed 30/408:40LHR - ORD
2 stops19h 26mAir Canada
Sun 4/508:40ORD - LHR
1 stop15h 50mAir Canada
Deal found 23/4£418
Thu 1/516:40LHR - ORD
1 stop31h 46mAustrian Airlines
Sat 3/515:55ORD - LHR
1 stop37h 15mAustrian Airlines
Deal found 23/4£421
Wed 21/517:35LGW - ORD
2 stops33h 40mMultiple Airlines
Wed 28/519:25ORD - LGW
2 stops16h 25mMultiple Airlines
Deal found 21/4£421
Tue 29/413:10LHR - ORD
Nonstop8h 45mBritish Airways
Wed 7/520:30ORD - LHR
Nonstop8h 00mBritish Airways
Deal found 22/4£421
Wed 5/1111:55LGW - ORD
1 stop11h 25mIcelandair
Mon 10/1118:30ORD - LGW
1 stop10h 25mIcelandair
Deal found 22/4£422
Wed 21/522:00STN - ORD
2 stops29h 15mMultiple Airlines
Wed 28/519:25ORD - STN
2 stops14h 55mMultiple Airlines
Deal found 21/4£425

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 23 April 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

LHR - ORD

LHRORD

London Heathrow

Mon 5/5

06:00-15:55

1 stop15h 55m

Chicago O'Hare Intl

Mon 12/5

18:05-08:20

Nonstop8h 15m

£411

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/9

21:25-21:15

1 stop29h 50m

Chicago O'Hare Intl

Mon 15/9

19:25-11:55

1 stop10h 30m

£412

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 7/5

06:50-12:00

1 stop11h 10m

Chicago O'Hare Intl

Thu 22/5

21:31-05:55

2 stops26h 24m

£413

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 7/5

18:35-15:55

1 stop27h 20m

Chicago O'Hare Intl

Wed 14/5

15:45-17:55

1 stop20h 10m

£414

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 8/5

13:45-15:55

1 stop32h 10m

Chicago O'Hare Intl

Fri 16/5

18:05-08:20

Nonstop8h 15m

£415

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/9

20:05-15:55

1 stop25h 50m

Chicago O'Hare Intl

Tue 16/9

14:20-16:25

1 stop20h 05m

£416

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/9

13:10-15:55

Nonstop8h 45m

Chicago O'Hare Intl

Wed 17/9

22:35-12:15

Nonstop7h 40m

£421

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 21/5

17:35-21:15

2 stops33h 40m

Chicago O'Hare Intl

Wed 28/5

19:25-17:50

2 stops16h 25m

£421

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 9/9

13:00-18:15

1 stop11h 15m

Chicago O'Hare Intl

Wed 17/9

19:25-14:40

1 stop13h 15m

£424

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 21/5

22:00-21:15

2 stops29h 15m

Chicago O'Hare Intl

Wed 28/5

19:25-16:20

2 stops14h 55m

£425

Flights are sorted by cheapest return flights first.

Deals found on 22/4

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 23 April 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 23 April 2025.

The most flights from GB0 to CHI are scheduled on a Monday (56 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (44 on average).

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 23 April 2025.
Read reviews from past customers who have flown Delta, KLM and LOT from United Kingdom to Chicago. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,920 reviews
Check prices

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,920 reviews
Delta
8.0
Very Good
7,920 reviews
Check prices

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very Good
7,920 reviews
Check prices

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
LOT
7.6
Good
1,066 reviews
Delta
8.0
Very Good
7,920 reviews
Check prices

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,272 reviews
Delta
8.0
Very Good
7,920 reviews
Check prices

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very Good
7,920 reviews
Check prices

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 £355 on WestJet. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £377 and Aer Lingus from £388 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 Gatwick - Chicago O'Hare Intl and London City - 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 United Airlines (90%), SWISS (89%) or Air Canada (87%) 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 £1,511, our data indicates the cheapest price to be £421. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £391.

  • 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
Gatwick to O'Hare Intl flights
London City to O'Hare Intl flights
Heathrow to Midway flights
Edinburgh to O'Hare Intl flights
Manchester to O'Hare Intl flights
Heathrow to St. Louis flights
Stansted to O'Hare Intl flights
Manchester to Midway flights
Birmingham to O'Hare Intl flights
Belfast Intl to O'Hare Intl flights
Gatwick to St. Louis flights
Belfast City to O'Hare Intl flights
Luton to O'Hare Intl flights
Bristol to O'Hare Intl flights
Edinburgh to Midway flights
Glasgow Intl to O'Hare Intl flights
Bristol to Midway flights
Birmingham to Midway flights
Inverness to O'Hare Intl flights
London City to St. Louis flights
Glasgow Intl to Midway flights
London City to Midway flights
Liverpool to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Gatwick to Midway flights
Newcastle upon Tyne to O'Hare Intl flights
Manchester to St. Louis flights
Dublin to O'Hare Intl flights
Luton to St. Louis flights
Newcastle upon Tyne to Midway flights
Leeds to Midway flights
Amsterdam to O'Hare Intl flights
Leeds to O'Hare Intl flights
Stansted to St. Louis flights
Madrid to O'Hare Intl flights
Exeter to O'Hare Intl flights
Heathrow to Moline flights
Southampton to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Dublin to Midway flights
Cardiff to O'Hare Intl flights
Cardiff to Midway flights
Newcastle upon Tyne to St. Louis flights
Birmingham to St. Louis flights
Southend to O'Hare Intl flights
Edinburgh to St. Louis flights
Southampton to Midway 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 23 April 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£314Average£554FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£329Average£598FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air FranceCheapest£339Average£468FlexibilityNo cancel feeOn-time77%
Search Air France flights
Scandinavian AirlinesCheapest£356Average£496FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£369Average£600FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£380Average£581FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Austrian AirlinesCheapest£408Average£553FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
United AirlinesCheapest£410Average£614FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£415Average£593FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£416Average£645FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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