Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Chicago from £252

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
6 12月 — 13 12月1
1 adult
1 adult, Economy, 0 bags

Find flight deals from United Kingdom to Chicago

Enter your travel dates to find the best prices.

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 6 11月 2025.

週日 23/1106:40LHR - ORD
2 stops16h 05mScandinavian Airlines
週日 30/1119:20ORD - LHR
2 stops17h 30mScandinavian Airlines
Deal found 3/11£409
週六 22/1115:35LHR - ORD
2 stops31h 10mScandinavian Airlines
週日 23/1119:20ORD - LHR
1 stop17h 10mScandinavian Airlines
Deal found 3/11£410
週日 23/1110:20LHR - ORD
1 stop12h 25mScandinavian Airlines
週六 29/1119:20ORD - LHR
2 stops17h 30mScandinavian Airlines
Deal found 3/11£410
週三 12/1121:05LHR - ORD
2 stops25h 40mScandinavian Airlines
週三 26/1119:20ORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 3/11£411
週五 5/1214:00LGW - ORD
2 stops27h 08mMultiple Airlines
週四 11/1207:20ORD - LGW
1 stop20h 40mMultiple Airlines
Deal found 3/11£413
週二 18/1121:05LHR - ORD
2 stops25h 40mScandinavian Airlines
週三 26/1119:20ORD - LHR
1 stop16h 20mScandinavian Airlines
Deal found 3/11£413
週四 20/1114:00LGW - ORD
1 stop15h 06mMultiple Airlines
週四 27/1112:55ORD - LGW
1 stop15h 05mMultiple Airlines
Deal found 4/11£413
週一 24/1106:40LHR - ORD
1 stop16h 05mScandinavian Airlines
週一 8/1219:20ORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 4/11£413
週六 22/1106:40LHR - ORD
2 stops40h 05mScandinavian Airlines
週六 29/1119:20ORD - LHR
2 stops15h 40mScandinavian Airlines
Deal found 4/11£414
週四 20/1110:20LHR - ORD
1 stop12h 25mScandinavian Airlines
週日 23/1119:20ORD - LHR
2 stops15h 05mScandinavian Airlines
Deal found 5/11£417
週五 21/1110:20LHR - ORD
1 stop12h 25mScandinavian Airlines
週六 29/1119:20ORD - LHR
1 stop20h 20mScandinavian Airlines
Deal found 4/11£417
週三 12/1111:15LGW - ORD
2 stops35h 30mMultiple Airlines
週三 26/1119:20ORD - LGW
2 stops19h 45mMultiple Airlines
Deal found 3/11£420

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 6 11月 2025.

Round-trip from

£411

One-way from

£252

Popular in

July

Cheapest in

February

Average price

£494

Good round-trip deal

£585 or less

Good one-way deal

£462 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 24/11-8/12
  • 2 total stops
  • 32h 25m total
  • United Kingdom to Chicago
Search Deals
15/1
  • 15/1
  • 2 total stops
  • 35h 59m total
  • United Kingdom to Chicago
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£63 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 November 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

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 6 11月 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

週一 2/3

07:05-16:45

2 stops15h 40m

Chicago O'Hare Intl

週日 8/3

20:20-18:50

2 stops17h 30m

£412

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週六 7/2

15:35-16:55

2 stops31h 20m

Chicago O'Hare Intl

週六 14/2

19:20-16:25

2 stops15h 05m

£413

LondonChicago

LTN - ORD

LTNORD

London Luton

週三 19/11

06:50-17:20

2 stops16h 30m

Chicago O'Hare Intl

週三 3/12

18:30-23:05

2 stops22h 35m

£422

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週五 20/3

07:05-17:45

2 stops15h 40m

Chicago O'Hare Intl

週日 22/3

20:20-16:25

2 stops15h 05m

£427

ManchesterChicago

MAN - ORD

MANORD

Manchester

週五 5/12

20:55-16:45

2 stops25h 50m

Chicago O'Hare Intl

週五 12/12

19:20-08:40

2 stops31h 20m

£427

LondonChicago

STN - ORD

STNORD

London Stansted

週三 3/12

06:30-14:00

1 stop13h 30m

Chicago O'Hare Intl

週三 10/12

19:40-15:05

1 stop13h 25m

£428

LondonChicago

LHR - ORD

LHRORD

London Heathrow

週二 25/11

19:50-16:45

2 stops26h 55m

Chicago O'Hare Intl

週三 11/2

19:20-18:50

2 stops17h 30m

£428

LondonChicago

LTN - ORD

LTNORD

London Luton

週五 5/12

05:50-17:55

1 stop18h 05m

Chicago O'Hare Intl

週五 12/12

15:50-15:25

1 stop17h 35m

£429

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

週日 11/1

14:10-09:13

1 stop25h 03m

Chicago Midway

週六 24/1

06:00-10:05

2 stops22h 05m

£430

LondonChicago

LTN - ORD

LTNORD

London Luton

週二 18/11

09:00-17:55

1 stop14h 55m

Chicago O'Hare Intl

週二 25/11

15:50-09:45

1 stop11h 55m

£430

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 60 results
1
2
3
...
6

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, September is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of £156). Flying from United Kingdom to Chicago in July is currently the most expensive (average of £480). 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 6 11月 2025.

It’s typically best to fly out from United Kingdom to Chicago in the afternoon. Doing so could potentially save you 14% on the flight price compared to flying at midday, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly return from United Kingdom to Chicago. Price data was last updated on 3 November 2024.

Travellers seeking maximum savings on their United Kingdom to Chicago flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 6 11月 2025.

The most flights from GB0 to CHI are scheduled on a Wednesday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 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 6 11月 2025.
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
1,335 reviews
Check prices

Crew

8.1

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

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
1,335 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

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.
Aer Lingus
7.2
Good
1,365 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

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.
Icelandair
7.1
Good
571 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

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.
Lufthansa
6.8
Okay
7,555 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

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.
British Airways
6.7
Okay
7,496 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

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.

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?

    Departing from United Kingdom to Chicago will take you 11h 25m. The distance from United Kingdom to Chicago is about 3960 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 Delta. Other airlines that offer cheap prices include SWISS from £408 and Austrian Airlines from £409 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 (84%), Austrian Airlines (84%) or United Airlines (84%) 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 £1,306, our data indicates the cheapest price to be £373. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £338.

  • 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, September is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of £156). Flying from United Kingdom to Chicago in July is currently the most expensive (average of £480). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Luton to O'Hare Intl flights
Heathrow to St. Louis flights
Gatwick to Midway flights
Bruxelles-National to O'Hare Intl flights
Manchester to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Gatwick to St. Louis flights
Dublin to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Manchester to Midway flights
London City to St. Louis flights
Edinburgh to Midway flights
Birmingham to O'Hare Intl flights
Southend to O'Hare Intl flights
Leeds to O'Hare Intl flights
Manchester to St. Louis flights
Glasgow Intl to O'Hare Intl flights
Leeds to Midway flights
Newcastle upon Tyne to O'Hare Intl flights
Bristol to O'Hare Intl flights
Birmingham to Midway flights
London City to Midway flights
Bristol to Midway flights
Edinburgh to St. Louis flights
Luton to St. Louis flights
Heathrow to Evansville flights
Glasgow Intl to Midway flights
Birmingham to St. Louis flights
Heathrow to Peoria flights
Belfast Intl to O'Hare Intl flights
Exeter to O'Hare Intl flights
Dublin to Midway flights
Newcastle upon Tyne to Midway flights
Belfast City to O'Hare Intl flights
Cardiff to O'Hare Intl flights
Heathrow to Champaign flights
Stansted to St. Louis flights
Glasgow Intl to St. Louis flights
Heathrow to Springfield flights
Manchester to Peoria flights
Southampton to O'Hare Intl flights
London City to Evansville flights
Inverness 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 6 11月 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£323Average£572FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£355Average£620FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£370Average£481FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£379Average£634FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Aer LingusCheapest£381Average£704FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£390Average£565FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Brussels AirlinesCheapest£397Average£556FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
LufthansaCheapest£408Average£643FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£416Average£620FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
United AirlinesCheapest£420Average£624FlexibilityNo cancel feeOn-time69%
Search United 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.