How long is the flight from United Kingdom to Chicago?

Departing from United Kingdom to Chicago will take you 12h 40m. The distance from United Kingdom to Chicago is about 3939 mi. This flight may include one or multiple stops.

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 £406 on Aer Lingus. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £406 and Lufthansa from £407 one-way.

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.

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).

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 cheapest flights from United Kingdom to Chicago?

Looking for the cheapest flight from United Kingdom to Chicago? While on average our users pay £1,442, our data indicates the cheapest price to be £417. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £329.

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 (73%), Austrian Airlines (73%) or United Airlines (73%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from United Kingdom to Chicago?

When booking a flight from United Kingdom to Chicago, you may want to consider flying on American Airlines, Finnair or British Airways as they are the most popular for this route.

How far in advance should I book a flight from United Kingdom to Chicago?

Find a great deal and save up to 35% by booking at least 56 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from United Kingdom to Chicago within the next two weeks, with the cheapest ticket starting at £499.

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

Our data shows that February tends to be the cheapest month to fly to Chicago from United Kingdom. Users have commonly found prices around £515 for the month, but tickets can be as low as £318. Due to multiple factors, prepare for potentially higher prices in July.

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.

£236+ Cheap Flights from the United Kingdom to Chicago

Cheap flight deals from United Kingdom to Chicago

Round-trip from	£420
One-way from	£236
Popular in	July
Cheapest in	February
Average price	£622
Good round-trip deal	£495 or less
Good one-way deal	£553 or less

Icelandair
13/10-20/10
2 total stops
45h 45m total
United Kingdom to Chicago

Search Deals

31/10
2 total stops
37h 23m total
United Kingdom to Chicago

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£61 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Price to beat on a round-trip flight from United Kingdom to Chicago (CHI).

Search Deals

Price to beat on a one-way flight from United Kingdom to Chicago (CHI).

Search Deals

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 29 August 2025.

Thu 25/908:45LCY - ORD

2 stops20h 30mMultiple Airlines

Sat 4/1017:55ORD - LCY

2 stops17h 20mMultiple Airlines

Deal found 28/8£420

Sat 6/907:25LHR - ORD

1 stop12h 40mUnited Airlines

Mon 15/913:12ORD - LHR

1 stop10h 43mUnited Airlines

Deal found 27/8£420

Wed 17/914:00LGW - ORD

1 stop32h 12mMultiple Airlines

Wed 1/1007:20ORD - LGW

2 stops20h 40mMultiple Airlines

Deal found 28/8£420

Wed 29/1009:25LCY - ORD

1 stop12h 55mSWISS

Wed 5/1118:50ORD - LCY

1 stop12h 00mSWISS

Deal found 28/8£420

Thu 11/907:40LHR - ORD

1 stop14h 05mAmerican Airlines

Mon 15/920:40ORD - LHR

Nonstop7h 50mAmerican Airlines

Deal found 28/8£420

Sun 14/914:00LGW - MDW

2 stops23h 11mMultiple Airlines

Mon 6/1008:15MDW - LGW

2 stops19h 45mMultiple Airlines

Deal found 27/8£421

Sat 30/810:00LGW - ORD

2 stops19h 33mMultiple Airlines

Sun 5/1020:49ORD - LGW

1 stop31h 11mMultiple Airlines

Deal found 26/8£421

Thu 4/907:40LHR - ORD

1 stop14h 05mAmerican Airlines

Mon 15/917:40ORD - LHR

Nonstop7h 40mAmerican Airlines

Deal found 27/8£421

Sat 6/908:50LGW - ORD

1 stop16h 10mMultiple Airlines

Mon 15/921:15ORD - LGW

1 stop15h 20mMultiple Airlines

Deal found 28/8£422

Sun 7/907:30LHR - ORD

1 stop13h 25mUnited Airlines

Sat 27/916:00ORD - LHR

Nonstop8h 20mUnited Airlines

Deal found 27/8£422

Sat 22/1106:30LHR - MDW

2 stops17h 48mVirgin Atlantic

Sat 6/1210:35MDW - LHR

1 stop15h 15mVirgin Atlantic

Deal found 27/8£422

Fri 5/910:00LGW - MDW

2 stops19h 20mMultiple Airlines

Mon 29/908:19MDW - LGW

1 stop19h 41mMultiple Airlines

Deal found 27/8£423

Best flights from United Kingdom to Chicago
Discover carefully curated flight deals from United Kingdom to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2025.

Thu 25/908:45LCY - ORD

2 stops20h 30mMultiple Airlines

Sat 4/1017:55ORD - LCY

2 stops17h 20mMultiple Airlines

Deal found 28/8£420

Mon 8/906:00LHR - ORD

1 stop13h 20mAustrian Airlines

Wed 24/921:50ORD - LHR

Nonstop7h 55mAustrian Airlines

Deal found 27/8£420

Sat 13/907:25LHR - ORD

1 stop12h 40mUnited Airlines

Thu 18/918:00ORD - LHR

Nonstop8h 20mUnited Airlines

Deal found 27/8£420

Tue 21/1015:40LGW - ORD

1 stop32h 35mIcelandair

Tue 28/1019:30ORD - LGW

1 stop10h 25mIcelandair

Deal found 27/8£421

Mon 6/1006:30LHR - ORD

2 stops15h 41mDelta

Mon 13/1020:38ORD - LHR

1 stop10h 32mDelta

Deal found 28/8£421

Sat 22/1106:30LHR - MDW

2 stops17h 48mVirgin Atlantic

Sat 6/1210:35MDW - LHR

1 stop15h 15mVirgin Atlantic

Deal found 27/8£422

Sun 5/1014:45LGW - ORD

1 stop14h 06mAmerican Airlines

Sun 12/1013:43ORD - LGW

1 stop12h 07mAmerican Airlines

Deal found 27/8£423

Mon 17/1108:40LCY - ORD

1 stop11h 40mKLM

Mon 1/1216:25ORD - LCY

1 stop11h 05mKLM

Deal found 27/8£433

Sat 6/1208:40LCY - ORD

1 stop13h 40mSWISS

Sun 7/1218:50ORD - LCY

1 stop12h 00mSWISS

Deal found 26/8£437

Mon 13/1011:55EDI - ORD

1 stop13h 05mAer Lingus

Mon 20/1015:45ORD - EDI

1 stop15h 05mAer Lingus

Deal found 28/8£511

Wed 22/1007:40EDI - ORD

1 stop13h 00mBritish Airways

Wed 12/1121:45ORD - EDI

1 stop11h 25mBritish Airways

Deal found 28/8£513

Fri 7/1106:35LHR - ORD

1 stop13h 35mUnited Airlines

Fri 28/1117:50ORD - LHR

Nonstop8h 05mUnited Airlines

Deal found 27/8£420

Direct flights from United Kingdom to Chicago
Explore direct flight options from United Kingdom to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 August 2025.

Fri 3/1014:10LHR - ORD

Nonstop9h 10mLufthansa

Sun 5/1018:00ORD - LHR

Nonstop8h 20mLufthansa

Deal found 27/8£420

Wed 3/912:15LHR - ORD

Nonstop8h 35mBritish Airways

Sat 13/922:35ORD - LHR

Nonstop7h 40mBritish Airways

Deal found 27/8£422

Sat 6/909:15LHR - ORD

Nonstop8h 35mBritish Airways

Mon 15/920:40ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 28/8£423

Wed 17/909:15LHR - ORD

Nonstop8h 35mBritish Airways

Thu 25/919:10ORD - LHR

Nonstop7h 55mBritish Airways

Deal found 28/8£424

Mon 29/908:30LHR - ORD

Nonstop9h 00mAustrian Airlines

Sun 5/1018:00ORD - LHR

Nonstop8h 20mAustrian Airlines

Deal found 28/8£425

Wed 17/909:15LHR - ORD

Nonstop8h 35mAmerican Airlines

Thu 2/1017:00ORD - LHR

Nonstop7h 55mAmerican Airlines

Deal found 28/8£426

Sun 14/909:15LHR - ORD

Nonstop8h 35mBritish Airways

Mon 6/1017:40ORD - LHR

Nonstop7h 40mBritish Airways

Deal found 27/8£426

Fri 5/912:15LHR - ORD

Nonstop8h 35mBritish Airways

Mon 15/917:40ORD - LHR

Nonstop7h 40mBritish Airways

Deal found 28/8£427

Fri 5/914:10LHR - ORD

Nonstop8h 35mBrussels Airlines

Fri 19/921:50ORD - LHR

Nonstop7h 55mBrussels Airlines

Deal found 26/8£428

Mon 8/909:15LHR - ORD

Nonstop8h 35mAmerican Airlines

Mon 22/916:55ORD - LHR

Nonstop7h 55mAmerican Airlines

Deal found 28/8£429

Mon 8/909:15LHR - ORD

Nonstop8h 35mBritish Airways

Tue 30/921:15ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 27/8£431

Thu 6/1111:00LHR - ORD

Nonstop8h 50mBritish Airways

Wed 12/1120:40ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 27/8£432

Last-minute flights from United Kingdom to Chicago
Discover last-minute flight deals from United Kingdom to Chicago. Data last updated 29 August 2025 and is based on user searches.

Sat 30/810:00LGW - ORD

2 stops19h 33mMultiple Airlines

Sun 5/1020:49ORD - LGW

1 stop31h 11mMultiple Airlines

Deal found 26/8£421

Thu 4/907:40LHR - ORD

1 stop14h 05mAmerican Airlines

Thu 4/1218:45ORD - LHR

Nonstop7h 50mAmerican Airlines

Deal found 27/8£421

Fri 5/910:00LGW - MDW

2 stops19h 20mMultiple Airlines

Mon 29/908:19MDW - LGW

1 stop19h 41mMultiple Airlines

Deal found 27/8£423

Fri 5/908:55LCY - ORD

1 stop12h 00mMultiple Airlines

Mon 15/919:05ORD - LCY

1 stop11h 25mMultiple Airlines

Deal found 28/8£423

Sat 6/907:25LHR - ORD

1 stop12h 40mUnited Airlines

Mon 15/913:12ORD - LHR

1 stop10h 43mUnited Airlines

Deal found 27/8£420

Sat 6/908:50LGW - ORD

1 stop16h 10mMultiple Airlines

Mon 15/921:15ORD - LGW

1 stop15h 20mMultiple Airlines

Deal found 28/8£422

Sun 7/907:30LHR - ORD

1 stop13h 25mUnited Airlines

Tue 30/916:00ORD - LHR

Nonstop8h 20mUnited Airlines

Deal found 27/8£422

Thu 11/906:30LHR - MDW

2 stops17h 05mDelta

Sun 14/919:15MDW - LHR

1 stop11h 55mDelta

Deal found 27/8£422

Sun 14/914:00LGW - MDW

2 stops23h 11mMultiple Airlines

Mon 6/1008:15MDW - LGW

2 stops19h 45mMultiple Airlines

Deal found 27/8£421

Wed 17/914:00LGW - ORD

1 stop32h 12mMultiple Airlines

Wed 1/1007:20ORD - LGW

2 stops20h 40mMultiple Airlines

Deal found 28/8£420

Wed 17/917:25LGW - ORD

2 stops23h 30mMultiple Airlines

Thu 25/911:13ORD - LGW

1 stop13h 07mMultiple Airlines

Deal found 28/8£423

Thu 25/908:45LCY - ORD

2 stops20h 30mMultiple Airlines

Sat 4/1017:55ORD - LCY

2 stops17h 20mMultiple Airlines

Deal found 28/8£420

One-way flights from United Kingdom to Chicago
Search for one-way flight options from United Kingdom to Chicago. Find affordable one-way fares based on user searches. Data last updated 29 August 2025.

Fri 31/1006:45EDI - ORD

2 stops37h 23mMultiple Airlines

Deal found 27/8£236

Wed 22/1017:50MAN - ORD

2 stops24h 45mMultiple Airlines

Deal found 28/8£243

Wed 15/1020:25MAN - ORD

2 stops22h 10mMultiple Airlines

Deal found 28/8£248

Sat 15/1122:15MAN - ORD

2 stops22h 45mMultiple Airlines

Deal found 29/8£250

Mon 27/1020:50EDI - ORD

3 stops48h 10mMultiple Airlines

Deal found 27/8£255

Thu 30/1020:45EDI - ORD

2 stops47h 23mMultiple Airlines

Deal found 27/8£259

Wed 15/1006:35EDI - ORD

3 stops36h 00mMultiple Airlines

Deal found 28/8£260

Tue 14/1020:40MAN - ORD

3 stops45h 55mMultiple Airlines

Deal found 28/8£261

Wed 17/910:45EDI - ORD

2 stops30h 10mMultiple Airlines

Deal found 26/8£264

Wed 3/917:00EDI - ORD

2 stops53h 10mMultiple Airlines

Deal found 28/8£269

Tue 16/919:15EDI - ORD

3 stops45h 40mMultiple Airlines

Deal found 27/8£275

Tue 9/919:15EDI - ORD

3 stops45h 40mMultiple Airlines

Deal found 28/8£275

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LCY - ORD

LCYORD

London City

Thu 25/9

08:45-23:15

2 stops20h 30m

Chicago O'Hare Intl

Sat 4/10

17:55-17:15

2 stops17h 20m

£420

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/9

06:00-13:20

1 stop13h 20m

Chicago O'Hare Intl

Wed 24/9

21:50-11:45

Nonstop7h 55m

£420

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 13/9

07:25-14:05

1 stop12h 40m

Chicago O'Hare Intl

Thu 18/9

18:00-08:20

Nonstop8h 20m

£420

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 7/11

06:35-14:10

1 stop13h 35m

Chicago O'Hare Intl

Fri 28/11

17:50-07:55

Nonstop8h 05m

£420

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/9

07:25-14:05

1 stop12h 40m

Chicago O'Hare Intl

Mon 15/9

13:12-05:55

1 stop10h 43m

£420

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 17/9

14:00-16:12

1 stop32h 12m

Chicago O'Hare Intl

Wed 1/10

07:20-10:00

2 stops20h 40m

£420

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 8/9

10:00-23:20

2 stops19h 20m

Chicago O'Hare Intl

Thu 25/9

10:27-07:00

1 stop14h 33m

£420

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 21/10

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Tue 28/10

19:30-10:55

1 stop10h 25m

£421

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 6/10

06:30-16:11

2 stops15h 41m

Chicago O'Hare Intl

Mon 13/10

20:38-13:10

1 stop10h 32m

£421

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Sun 14/9

14:00-07:11

2 stops23h 11m

Chicago Midway

Mon 6/10

08:15-10:00

2 stops19h 45m

£421

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 60 results

...

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?

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

The most flights from GB0 to CHI are scheduled on a Wednesday (53 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (39 on average).

Reviews of airlines servicing Chicago

Read reviews from past customers who have flown with Finnair, Aer Lingus, andIcelandair 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.

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Finnair

7.6

Good

1,321 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Aer Lingus

7.2

Good

1,240 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Icelandair

7.0

Good

537 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Lufthansa

6.8

Okay

7,371 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,320 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Related info for your journey

How long is the flight from United Kingdom to Chicago?
Departing from United Kingdom to Chicago will take you 12h 40m. The distance from United Kingdom to Chicago is about 3939 mi. This flight may include one or multiple stops.
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 £406 on Aer Lingus. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £406 and Lufthansa from £407 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 Air Canada (73%), Austrian Airlines (73%) or United Airlines (73%) 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 £1,442, our data indicates the cheapest price to be £417. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £329.
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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for United Kingdom to Chicago

Heathrow to O'Hare Intl flights

Gatwick to O'Hare Intl flights

London City to O'Hare Intl flights

Heathrow to Midway flights

Stansted to O'Hare Intl flights

Luton to O'Hare Intl flights

Gatwick to Midway flights

Manchester to O'Hare Intl flights

Heathrow to St. Louis flights

Manchester to Midway flights

Istanbul to O'Hare Intl flights

Edinburgh to O'Hare Intl flights

Bruxelles-National to O'Hare Intl flights

Gatwick to St. Louis flights

Glasgow Intl to O'Hare Intl flights

London City to St. Louis flights

Norwich to O'Hare Intl flights

Newcastle upon Tyne to O'Hare Intl flights

Glasgow Intl to Midway flights

Edinburgh to Midway flights

Birmingham to O'Hare Intl flights

London City to Midway flights

Leeds to O'Hare Intl flights

Birmingham to St. Louis flights

Heathrow to Moline flights

Dublin to O'Hare Intl flights

Manchester to St. Louis flights

London City to Moline flights

Birmingham to Midway flights

Liverpool to O'Hare Intl flights

Newcastle upon Tyne to Midway flights

Bristol to O'Hare Intl flights

Stansted to St. Louis flights

Heathrow to Peoria flights

Edinburgh to St. Louis flights

Madrid to O'Hare Intl flights

Dublin to Midway flights

Luton to St. Louis flights

Belfast Intl to O'Hare Intl flights

Glasgow Intl to St. Louis flights

Bristol to Midway flights

Barcelona-El Prat to O'Hare Intl flights

Frederic Chopin to O'Hare Intl flights

Cardiff to Midway flights

Southampton to O'Hare Intl flights

Cardiff to O'Hare Intl flights

Leeds to Midway flights

Exeter to O'Hare Intl flights

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Chicago O'Hare Intl Airport to Boston flights

Chicago O'Hare Intl Airport to Denver flights

Chicago O'Hare Intl Airport to Los Angeles flights

Chicago O'Hare Intl Airport to Toronto Pearson Intl Airport flights

Top 10 airlines flying from United Kingdom to Chicago

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£310	Average£551	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Aer Lingus	Cheapest£325	Average£644	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Air France	Cheapest£335	Average£565	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Scandinavian Airlines	Cheapest£352	Average£463	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£366	Average£611	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
British Airways	Cheapest£376	Average£551	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£379	Average£600	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Brussels Airlines	Cheapest£392	Average£575	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£395	Average£620	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Austrian Airlines	Cheapest£401	Average£580	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights

Fly with Cheapflights

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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Cheap flights from the United Kingdom to Chicago from £236

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.

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 29 August 2025.

Round-trip from

One-way from

Popular in

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Average price

Good round-trip deal

Good one-way deal

Find flight deals from United Kingdom to Chicago

Cheapest flights from United Kingdom to ChicagoExplore 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 29 August 2025.

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 29 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Chicago that are best for you.

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.

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?

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 29 August 2025.

Weekly flight availability from United Kingdom to Chicago

Reviews of airlines servicing Chicago

Read reviews from past customers who have flown with Finnair, Aer Lingus, andIcelandair 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.

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.

How long is the flight from United Kingdom to Chicago?

What are the cheapest airlines to fly from United Kingdom to Chicago one-way?

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

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

What are the cheapest flights from United Kingdom to Chicago?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 10 airlines flying from United Kingdom to Chicago

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

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

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

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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 29 August 2025.