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$472+ Cheap flights from Heathrow (LHR) to Chicago (CHI)

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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The best prices from London Heathrow to Chicago are usually found in February or January, booked 69 days in advance, depart on a Tuesday or Sunday and return on a Wednesday

Cheap flight deals from Heathrow to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 December 22, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$575
(Finnair)

One-way from

$472
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$791
Provider with most accurate pricing for London Heathrow-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Chicago (CHI) flights.
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From London Heathrow to Chicago (CHI)
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One-way flight from London Heathrow to Chicago (CHI)
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High demand for flights, 10% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Heathrow to Chicago

Cheapest flights from Heathrow to Chicago
Explore the most affordable flight options available from Heathrow to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2024.

This United Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/291:35 pmLHR - ORD
Nonstop9h 25mUnited Airlines
Mon 1/135:50 pmORD - LHR
Nonstop8h 05mUnited Airlines
Deal found 12/21$578
This OneTravel deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/292:30 pmLHR - ORD
1 stop24h 27mAir Canada
Mon 1/139:50 amORD - LHR
2 stops15h 20mAir Canada
Deal found 12/21$607
This StudentUniverse deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3011:55 amLHR - ORD
Nonstop8h 50mFinnair
Thu 5/228:30 pmORD - LHR
Nonstop7h 50mFinnair
Deal found 12/21$621
This Ticket deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:40 amLHR - ORD
1 stop15h 10mScandinavian Airlines
Mon 1/137:10 pmORD - LHR
2 stops17h 40mScandinavian Airlines
Deal found 12/21$637
This Gotogate deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3110:25 amLHR - ORD
Nonstop9h 25mBrussels Airlines
Tue 1/74:08 pmORD - LHR
1 stop35h 32mBrussels Airlines
Deal found 12/21$644
This Kiwi.com deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/297:40 pmLHR - ORD
1 stop24h 50mMultiple Airlines
Tue 1/74:22 pmORD - LHR
1 stop23h 48mMultiple Airlines
Deal found 12/21$652
This Delta deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/314:10 pmLHR - ORD
1 stop13h 46mDelta
Tue 1/75:55 pmORD - LHR
2 stops13h 55mDelta
Deal found 12/21$659
This Kiwi.com deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:30 pmLHR - ORD
1 stop27h 00mTAP AIR PORTUGAL
Fri 1/108:20 pmORD - LHR
1 stop16h 35mTAP AIR PORTUGAL
Deal found 12/21$715
This SWISS deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/307:00 amLHR - ORD
2 stops15h 15mSWISS
Mon 1/137:05 pmORD - LHR
2 stops15h 35mSWISS
Deal found 12/21$745
This Delta deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/289:10 amLHR - MDW
1 stop14h 34mDelta
Tue 12/319:30 amMDW - LHR
1 stop15h 20mDelta
Deal found 12/21$751
This Virgin Atlantic deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/309:10 amLHR - MDW
2 stops18h 56mVirgin Atlantic
Mon 1/1310:19 amMDW - LHR
2 stops14h 31mVirgin Atlantic
Deal found 12/21$759
This British Airways deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/282:10 pmLHR - ORD
Nonstop8h 50mBritish Airways
Tue 12/319:45 pmORD - LHR
Nonstop7h 45mBritish Airways
Deal found 12/21$761

Find flights from Heathrow to Chicago within your budget

Customize your flight search to find flights from Heathrow 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 2,558,603 searches. Data last updated December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 1/21

11:55 am-2:45 pm

Nonstop8h 50m

Chicago O'Hare Intl

Thu 5/15

9:30 pm-5:05 pm

1 stop13h 35m

$575

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 1/27

3:00 pm-10:54 am

1 stop25h 54m

Chicago O'Hare Intl

Wed 2/19

11:35 am-7:10 am

1 stop13h 35m

$576

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 1/7

12:05 pm-9:43 pm

2 stops15h 38m

Chicago O'Hare Intl

Sun 1/12

6:08 pm-6:40 am

1 stop30h 32m

$577

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 4/4

6:40 am-4:10 pm

1 stop15h 30m

Chicago O'Hare Intl

Thu 4/17

7:15 pm-4:00 pm

1 stop14h 45m

$578

LondonChicago

LHR - MDW

LHRMDW

London Heathrow

Mon 1/13

8:40 am-6:14 pm

2 stops15h 34m

Chicago Midway

Mon 1/27

12:44 pm-10:35 am

1 stop15h 51m

$578

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 1/2

6:50 am-12:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Mon 1/20

4:20 pm-10:25 am

1 stop12h 05m

$580

LondonChicago

LHR - MDW

LHRMDW

London Heathrow

Tue 1/21

2:30 pm-10:20 pm

1 stop13h 50m

Chicago Midway

Tue 1/28

5:07 pm-10:35 am

1 stop11h 28m

$581

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 1/10

10:25 am-1:50 pm

Nonstop9h 25m

Chicago O'Hare Intl

Mon 1/20

9:10 pm-11:15 am

Nonstop8h 05m

$583

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 1/10

1:35 pm-5:00 pm

Nonstop9h 25m

Chicago O'Hare Intl

Wed 1/22

2:15 pm-6:55 am

1 stop10h 40m

$584

LondonChicago

LHR - MDW

LHRMDW

London Heathrow

Mon 3/17

2:30 pm-10:27 pm

1 stop12h 57m

Chicago Midway

Mon 3/31

7:09 pm-12:15 pm

1 stop11h 06m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 43 results
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Compare providers for flights from Heathrow to Chicago

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Chicago in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
business-class.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
CombigoPrice Accuracy3 starsTrust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Heathrow with our price prediction graph.
Estimated round-trip 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.

Travel insights for flights from Heathrow to Chicago

Get recent, data-driven insights about flights from Heathrow to Chicago including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Chicago. Price data was last updated on December 20, 2024.

The price you pay for your flight from London Heathrow Airport to Chicago may vary depending on when you book. For the best chance of a lower fare, look to book 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago (average of $245). Flying from London Heathrow Airport to Chicago in March is currently the most expensive (average of $317). 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 LHR to CHI?

Find hourly flight availability from Heathrow 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 December 22, 2024.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Chicago in the evening. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Heathrow to Chicago. Price data was last updated on December 16, 2024.

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

Weekly flight availability from London Heathrow Airport to Chicago

Explore weekly flight availability from Heathrow 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 December 22, 2024.

The most flights from LHR to CHI are scheduled on a Saturday (39 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (38 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 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 December 22, 2024.
Read reviews from past customers who have flown Air Canada, Scandinavian Airlines and Austrian Airlines from London to Chicago. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,594 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

Delta
8.0
Very good
8,594 reviews
Delta
8.0
Very good
8,594 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

KLM
7.8
Good
1,342 reviews
Delta
8.0
Very good
8,594 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

Finnair
7.7
Good
1,283 reviews
Delta
8.0
Very good
8,594 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
785 reviews
Delta
8.0
Very good
8,594 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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

SWISS
7.6
Good
1,605 reviews
Delta
8.0
Very good
8,594 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

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 Heathrow 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 Heathrow Airport to Chicago round-trip?

    Currently priced at $575, Finnair will fly you from London Heathrow Airport to Chicago and back. In addition to Finnair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and United Airlines - these airlines can fly you to your destination from $576 and $577, respectively. Finnair is currently priced 18% below the average price you’ll pay for this route.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $475. Users have also found prices from $483 and $506 on Aer Lingus and Virgin Atlantic, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to Chicago on time: SWISS (89%), Air Canada (86%), Austrian Airlines (86%).

  • What are the cheapest flights from London Heathrow Airport to Chicago?

    On average you can expect to pay $1,532 for a flight from London Heathrow Airport to Chicago. The cheapest flight overall is $623 while the most popular route, (London Heathrow - Chicago O'Hare Intl) is currently priced at $455.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Chicago?

    Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago (average of $245). Flying from London Heathrow Airport to Chicago in March is currently the most expensive (average of $317). 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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Top 10 airlines flying from Heathrow to Chicago

Discover the top 10 airlines that operate flights from Heathrow 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 2,558,603 searches. Data last updated December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$462Average$645FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$483Average$729FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$501Average$672FlexibilityNo cancel feeOn-time76%
FinnairCheapest$535Average$809FlexibilityNo cancel feeOn-time76%
IberiaCheapest$555Average$775FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$556Average$773FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$558Average$798FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$579Average$734FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$584Average$1,162FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$646Average$1,069FlexibilityNo cancel feeOn-time76%
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