$438 Cheap Flights from London (LHR) to Chicago (ORD)

View $438 flight on Sat, Oct 31, 2026Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Chicago O'Hare Intl. Airport (ORD)

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Cheap Flights from London to Chicago (LHR-ORD)

Prices were available within the past 7 days and start at $438 for one-way flights and $646 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Fri, Sep 18 - Sun, Oct 4
LHR
London
ORD
Chicago
$646 Roundtrip, found 1 hour ago
$646
Roundtrip
found 1 hour ago
Select TAP Portugal flight, departing Fri, Sep 18 from London to Chicago, returning Sun, Oct 4, priced at $646 found 1 hour ago
Scandinavian Airlines
Wed, Feb 3 - Mon, Feb 8
LHR
London
ORD
Chicago
$730 Roundtrip, found 1 hour ago
$730
Roundtrip
found 1 hour ago
Select Scandinavian Airlines flight, departing Wed, Feb 3 from London to Chicago, returning Mon, Feb 8, priced at $730 found 1 hour ago
Aer Lingus
Wed, Feb 3 - Mon, Feb 8
LHR
London
ORD
Chicago
$762 Roundtrip, found 1 hour ago
$762
Roundtrip
found 1 hour ago
Select Aer Lingus flight, departing Wed, Feb 3 from London to Chicago, returning Mon, Feb 8, priced at $762 found 1 hour ago
Austrian Airlines
Wed, Feb 10 - Wed, Feb 17
LHR
London
ORD
Chicago
$800 Roundtrip, just found
$800
Roundtrip
just found
Select Austrian Airlines flight, departing Wed, Feb 10 from London to Chicago, returning Wed, Feb 17, priced at $800 just found
Lufthansa
Wed, Feb 10 - Wed, Feb 17
LHR
London
ORD
Chicago
$805 Roundtrip, just found
$805
Roundtrip
just found
Select Lufthansa flight, departing Wed, Feb 10 from London to Chicago, returning Wed, Feb 17, priced at $805 just found
Brussels Airlines
Wed, Feb 10 - Wed, Feb 17
LHR
London
ORD
Chicago
$805 Roundtrip, just found
$805
Roundtrip
just found
Select Brussels Airlines flight, departing Wed, Feb 10 from London to Chicago, returning Wed, Feb 17, priced at $805 just found
American Airlines
Mon, Nov 23 - Sat, Nov 28
LHR
London
ORD
Chicago
$812 Roundtrip, found 18 hours ago
$812
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Nov 23 from London to Chicago, returning Sat, Nov 28, priced at $812 found 18 hours ago
United
Tue, Nov 24 - Mon, Nov 30
LHR
London
ORD
Chicago
$829 Roundtrip, found 19 hours ago
$829
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Nov 24 from London to Chicago, returning Mon, Nov 30, priced at $829 found 19 hours ago
Finnair
Wed, Feb 10 - Wed, Feb 17
LHR
London
ORD
Chicago
$835 Roundtrip, just found
$835
Roundtrip
just found
Select Finnair flight, departing Wed, Feb 10 from London to Chicago, returning Wed, Feb 17, priced at $835 just found
British Airways
Wed, Feb 10 - Wed, Feb 17
LHR
London
ORD
Chicago
$836 Roundtrip, just found
$836
Roundtrip
just found
Select British Airways flight, departing Wed, Feb 10 from London to Chicago, returning Wed, Feb 17, priced at $836 just found

Alternative airports near Chicago

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Midway Intl. MDW. Closest option available. Average driving time to city center is 16 minutes. Flights from $1,179
MDW
Midway Intl.
Closest
Average driving time to city center16 min
Flights from $1,179

Find the cheapest month to fly from London (LHR) to Chicago (ORD)

April is typically the cheapest month to fly

From $547 - $1,014 per traveler.

Frequently asked questions

How much does a flight from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) cost?
You can find cheap one-way flights from $438 and cheap return flights from $646 London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) with Expedia. One-way flights usually range from $546 to $11431, and return flights typically cost between $645 and $8207. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
February is the cheapest month to fly from London (LHR) to Chicago, IL (ORD), with average return fares around $611. This is about 22% lower than the average price throughout the year, as demand typically decreases after the holiday season. Other economical months to consider are April and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
3 airlines operate nonstop service from LHR to ORD:

  • American Airlines operates around 21 direct flights from LHR to ORD every week
  • United operates around 21 direct flights from LHR to ORD every week
  • British Airways operates around 18 direct flights from LHR to ORD every week

What is the cheapest airline that flies from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
Iberia is one of the cheapest airlines offering connecting flights from Heathrow (LHR) to O'Hare Intl. (ORD), with round-trip tickets starting from around $840. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
To find a cheap flight from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
The best airline to fly with from London (LHR) to Chicago, IL (ORD) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, American Airlines typically offers the lowest fares. British Airways offers the most daily flights from LHR to ORD, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
The ideal times to fly from London (LHR) to Chicago (ORD) are February and September, with return flights averaging around $611. February is less crowded, allowing for a more relaxed travel experience, while September offers lovely weather, making it a great time to visit the Windy City.*Prices based on flights available on Expedia in the last year.
How many flights per day from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
On average, there are around 9 nonstop flights per day from Heathrow (LHR) to O'Hare Intl. (ORD). For more options, look at flights that include layovers.
What is the earliest flight from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
The earliest flight from London Heathrow (LHR) to Chicago O'Hare (ORD) typically departs at 6:00 AM, operated by Air Baltic and Swiss International Air Lines. An early departure like this allows you to make the most of your day upon arrival in Chicago. This service operates seasonally from April to October. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
The most popular departure times for flights from London (LHR-Heathrow) to Chicago (ORD-O'Hare Intl.) are in the early afternoon, from 12pm to 3pm. This accounts for around 31% of total traffic. Many major carriers, including American Airlines, United, and British Airways, offer flights during this window. This timing is favored because it allows travelers to enjoy a leisurely morning before their flight.
How long does it take to fly from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
A nonstop flight from LHR to ORD typically takes around 8 hours 50 minutes, covering approximately 3,943 miles. Connecting flights on this route usually add 4 hours 40 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
You can fly business class between LHR and ORD. Airlines that offer business class service on this route include:

  • American Airlines
  • Lufthansa
  • Icelandair
  • Brussels Airlines
  • United Airlines
  • British Airways
  • SAS
  • Turkish Airlines
  • Swiss International Air Lines
  • KLM

First class is available with British Airways and American Airlines.
How much is a business class flight from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
A direct, return business class ticket from London (LHR) to Chicago (ORD) typically costs between $5,512 - $13,263. A non-stop, one-way business class flight is usually around $2,942 - $11,765. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) flight with Expedia?
It's easy to earn miles on a London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Chicago from Heathrow (LHR)?
When traveling from Heathrow (LHR) to Chicago, you can fly into Midway Intl. (MDW) and O'Hare Intl. (ORD). Some flights may connect through major hubs like John F. Kennedy Intl. (JFK), Logan Intl. (BOS), Miami Intl. (MIA) before reaching Chicago. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) at the last minute?
Typically, booking a last minute flight from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) flight and hotel package?
Securing a London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) Chicago Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.)?
If you booked your London (LHR-Heathrow) to Chicago, IL (ORD-O'Hare Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Heathrow
Destination airport
O'Hare Intl.
Airlines serving
Aer Lingus, Air Canada, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
$645
Distance
3942 mi
Average flight time
2 hours 51 mins

Book with confidence

London to Chicago Flights

The cheapest times to fly from London to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to Chicago are during the month of September. You can find some of the cheapest flights from London to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to Chicago

Sunday is one of the best days to book for cheap flights from London to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to Chicago in 2026. You can also book with separate airlines for your outbound and return journeys, from $438 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

London to Chicago Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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