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Cheap flights from London to Chicago from £316

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — CHI
25 Mar — 1 Apr1
1 adult

Cheapflights Tip: The best prices from London to Chicago are usually found in February or November, booked 44 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from London to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 20 March 2025.

Round-trip from

£414

One-way from

£316

Popular in

August

Cheapest in

February

Average price

£493

Good round-trip deal

£561 or less

Good one-way deal

£582 or less
29/4-16/7
  • 29/4-16/7
  • 3 total stops
  • 57h 21m total
  • London to Chicago
3/5
  • 3/5
  • 1 total stop
  • 15h 32m total
  • London to Chicago
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Average for round-trip flights in March 2025
Price to beat on a round-trip flight from London (LON) to Chicago (CHI).
Price to beat on a one-way flight from London (LON) to Chicago (CHI).

Find flight deals from London to Chicago

Cheapest flights from London to Chicago
Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 March 2025.

Tue 29/410:00LGW - ORD
1 stop34h 26mMultiple Airlines
Wed 16/705:05ORD - LGW
2 stops22h 55mMultiple Airlines
Deal found 19/3£414
Thu 27/306:00LHR - ORD
1 stop12h 55mSWISS
Sun 30/315:45ORD - LHR
1 stop21h 35mSWISS
Deal found 19/3£414
Wed 17/915:40LGW - ORD
1 stop11h 35mIcelandair
Tue 30/919:25ORD - LGW
1 stop13h 15mIcelandair
Deal found 19/3£414
Wed 26/306:00LHR - ORD
1 stop14h 05mAustrian Airlines
Wed 2/421:20ORD - LHR
Nonstop8h 25mAustrian Airlines
Deal found 19/3£414
Thu 24/408:40LHR - ORD
1 stop13h 15mUnited Airlines
Wed 30/421:20ORD - LHR
Nonstop8h 25mUnited Airlines
Deal found 19/3£415
Sun 20/406:30LHR - ORD
1 stop14h 15mLufthansa
Fri 9/521:20ORD - LHR
Nonstop8h 25mLufthansa
Deal found 19/3£416
Tue 29/421:25LHR - ORD
1 stop26h 50mIcelandair
Fri 18/719:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 19/3£417
Sat 19/407:30LHR - ORD
1 stop15h 55mFinnair
Fri 2/516:55ORD - LHR
Nonstop7h 55mFinnair
Deal found 19/3£420
Sat 19/409:30LHR - ORD
1 stop13h 55mMultiple Airlines
Mon 28/416:44ORD - LHR
1 stop11h 56mMultiple Airlines
Deal found 19/3£420
Sat 26/412:15LHR - ORD
Nonstop8h 30mBritish Airways
Thu 1/522:20ORD - LHR
Nonstop7h 55mBritish Airways
Deal found 19/3£424
Wed 23/408:15STN - ORD
2 stops16h 00mMultiple Airlines
Wed 30/419:25ORD - STN
2 stops21h 05mMultiple Airlines
Deal found 19/3£424
Wed 23/411:45LHR - ORD
2 stops18h 14mVirgin Atlantic
Sun 18/518:18ORD - LHR
1 stop11h 07mVirgin Atlantic
Deal found 19/3£427

Cheapflights Fare Finder

Customise your flight search to find flights from London 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 20 March 2025.
Use the filters below to find and compare flights from London to Chicago that are best for you.

Fly from

London

Fly to

Chicago

Route

Depart

Return

Price

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 29/4

10:00-14:26

1 stop34h 26m

Chicago O'Hare Intl

Wed 16/7

05:05-10:00

2 stops22h 55m

£414

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 23/4

07:25-13:55

1 stop12h 30m

Chicago O'Hare Intl

Wed 30/4

21:20-11:45

Nonstop8h 25m

£414

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 4/5

06:00-12:10

1 stop12h 10m

Chicago O'Hare Intl

Sun 11/5

21:20-11:45

Nonstop8h 25m

£414

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 24/4

12:10-12:10

1 stop30h 00m

Chicago O'Hare Intl

Mon 28/4

16:05-06:20

Nonstop8h 15m

£415

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 22/5

15:40-21:15

1 stop11h 35m

Chicago O'Hare Intl

Mon 26/5

19:25-14:35

1 stop13h 10m

£416

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 29/4

21:25-18:15

1 stop26h 50m

Chicago O'Hare Intl

Fri 18/7

19:25-11:55

1 stop10h 30m

£417

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 19/4

07:30-17:25

1 stop15h 55m

Chicago O'Hare Intl

Fri 2/5

16:55-06:50

Nonstop7h 55m

£420

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 26/4

12:15-14:45

Nonstop8h 30m

Chicago O'Hare Intl

Thu 1/5

22:20-12:15

Nonstop7h 55m

£424

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 23/4

08:15-18:15

2 stops16h 00m

Chicago O'Hare Intl

Wed 30/4

19:25-22:30

2 stops21h 05m

£424

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 23/4

11:45-23:59

2 stops18h 14m

Chicago O'Hare Intl

Sun 18/5

18:18-11:25

1 stop11h 07m

£427

Flights are sorted by cheapest return flights first.

Deals found on 19/3

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

Have a flexible travel schedule? Discover the best time to fly to Chicago from London 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 London to Chicago

How far ahead should I book a flight from London to Chicago?

Use this chart to determine the optimal time to book a return flight from London to Chicago. Price data was last updated on 14 March 2025.

To ensure you get the cheapest price possible for a flight from London to Chicago, you should look to book at least 44 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from London to Chicago (average of £595). Flying from London 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 LON to CHI?

Find hourly flight availability from London 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 20 March 2025.

It’s typically best to fly out from London to Chicago in the evening. Doing so could potentially save you 23% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from London to Chicago?

Use this chart to determine the cheapest time to fly return from London to Chicago. Price data was last updated on 28 April 2024.

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

Weekly flight availability from London to Chicago

Explore weekly flight availability from London 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 20 March 2025.

The most flights from LON to CHI are scheduled on a Monday (37 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (36 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 20 March 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Air Transat from London to Chicago to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

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
8.0
Very Good

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

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

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

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

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

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

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

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

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

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 London 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 flying from London to Chicago round-trip?

    Our cheapest airline available from London to Chicago is Lufthansa. Our recent data shows that you can find tickets from as low as £414 on this airline. Additional options worth looking into are United Airlines and Icelandair, starting at £415 and £416 round-trip. These flights start at 24% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from London to Chicago one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £330. TAP AIR PORTUGAL flights start at £337 while deals on Icelandair start at £385 one-way.

  • What are the most popular routes from London to Chicago?

  • What are the most reliable airlines from London to Chicago?

    Before booking your flight to Chicago from London, check out the most reliable airlines to get you to your destination on time: Air Canada (93%), Austrian Airlines (93%), United Airlines( 93%).

  • What are the cheapest flights from London to Chicago?

    While on average a flight from London to Chicago is generally £1,789, our data shows the cheapest flight currently is £433. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £342 for that flight.

  • Where are the most common stopover locations when flying from London to Chicago?

  • What are some popular things to do or see while on a stopover in Reykjavik?

    If you're on a stopover in Reykjavik and looking for things to do, consider visiting Hallgrímskirkja, National Cathedral, or Harpa. Hallgrímskirkja, National Cathedral, and Harpa are located about 23.2 mi, 23.0 mi, and 23.3 mi, respectively from Reykjavik Keflavik Intl. Those on a stopover in Reykjavik in need of a car hire can book one at Reykjavik Keflavik Intl for about £35.

  • What are some popular points of interest to see during a stopover in Dublin?

    The majority of Dublin visitors spend their time at Bord Gáis Energy Theatre, Button Factory, and Vicar Street. Bord Gáis Energy Theatre, Button Factory and Vicar Street are located about 5.7 mi, 5.7 mi, and 5.9 mi, respectively from Dublin if you are interested in checking them out. Travellers in need of a car in Dublin can hire one for about £17 per day.

  • Where are the least popular stopover locations for London to Chicago flights?

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

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

  • How can I find direct flights from London to Chicago?

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

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

    Yes. Cheapflights offers flight deals from London 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 London to Chicago?

    Currently, January is the cheapest month in which you can book a flight from London to Chicago (average of £595). Flying from London 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

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Fly from London to Chicago on these airlines

Choose from the following airlines for your flight from London to Chicago. Flights are based on user searches made on Cheapflights and were last updated on 20 March 2025.

Top 10 airlines flying from London to Chicago

Discover the top 10 airlines that operate flights from London 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 20 March 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£323Average£501FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£365Average£517FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£380Average£606FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£414Average£564FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£422Average£579FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£422Average£585FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Virgin AtlanticCheapest£427Average£609FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£428Average£599FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£447Average£586FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
American AirlinesCheapest£465Average£638FlexibilityNo cancel feeOn-time71%
Search American 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 London to Chicago?

Cheapflights helps you search for flights from London to Chicago via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Chicago from London.

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

Need flexible booking options for your flight to Chicago from London? 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 London to Chicago become cheaper?

Not ready to book yet? You can track prices for flights from London to Chicago on Cheapflights with our Price Alert feature and get notified when better prices are available.

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