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

View AU$436 flight on Thu, 12 Nov 2026Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Thu, 24 Sept - Wed, 30 Sept
ORD
Chicago
LHR
London
AU$1,031 Return, found 1 day ago
AU$1,031
Return
found 1 day ago
Select TAP Portugal flight, departing Thu, 24 Sept from Chicago to London, returning Wed, 30 Sept, priced at AU$1,031 found 1 day ago
Icelandair
Mon, 18 Jan - Thu, 6 May
ORD
Chicago
LHR
London
AU$1,100 Return, found 1 day ago
AU$1,100
Return
found 1 day ago
Select Icelandair flight, departing Mon, 18 Jan from Chicago to London, returning Thu, 6 May, priced at AU$1,100 found 1 day ago
Scandinavian Airlines
Wed, 14 Oct - Wed, 21 Oct
ORD
Chicago
LHR
London
AU$1,136 Return, found 1 day ago
AU$1,136
Return
found 1 day ago
Select Scandinavian Airlines flight, departing Wed, 14 Oct from Chicago to London, returning Wed, 21 Oct, priced at AU$1,136 found 1 day ago
United
Wed, 20 Jan - Wed, 27 Jan
ORD
Chicago
LHR
London
AU$1,221 Return, found 1 day ago
AU$1,221
Return
found 1 day ago
Select United flight, departing Wed, 20 Jan from Chicago to London, returning Wed, 27 Jan, priced at AU$1,221 found 1 day ago
Virgin Atlantic
Wed, 20 Jan - Wed, 27 Jan
ORD
Chicago
LHR
London
AU$1,222 Return, found 1 day ago
AU$1,222
Return
found 1 day ago
Select Virgin Atlantic flight, departing Wed, 20 Jan from Chicago to London, returning Wed, 27 Jan, priced at AU$1,222 found 1 day ago
Delta
Wed, 17 Mar - Wed, 24 Mar
ORD
Chicago
LHR
London
AU$1,222 Return, found 1 day ago
AU$1,222
Return
found 1 day ago
Select Delta flight, departing Wed, 17 Mar from Chicago to London, returning Wed, 24 Mar, priced at AU$1,222 found 1 day ago
Finnair
Mon, 18 Jan - Thu, 6 May
ORD
Chicago
LHR
London
AU$1,228 Return, found 1 day ago
AU$1,228
Return
found 1 day ago
Select Finnair flight, departing Mon, 18 Jan from Chicago to London, returning Thu, 6 May, priced at AU$1,228 found 1 day ago
Lufthansa
Wed, 17 Mar - Wed, 24 Mar
ORD
Chicago
LHR
London
AU$1,234 Return, found 1 day ago
AU$1,234
Return
found 1 day ago
Select Lufthansa flight, departing Wed, 17 Mar from Chicago to London, returning Wed, 24 Mar, priced at AU$1,234 found 1 day ago
Swiss International Air Lines
Wed, 17 Mar - Wed, 24 Mar
ORD
Chicago
LHR
London
AU$1,244 Return, found 1 day ago
AU$1,244
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Wed, 17 Mar from Chicago to London, returning Wed, 24 Mar, priced at AU$1,244 found 1 day ago
Finnair
Wed, 20 Jan - Wed, 27 Jan
ORD
Chicago
LHR
London
AU$1,263 Return, found 1 day ago
AU$1,263
Return
found 1 day ago
Select Finnair flight, departing Wed, 20 Jan from Chicago to London, returning Wed, 27 Jan, priced at AU$1,263 found 1 day ago

Frequently asked questions

How much does a flight from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow) cost?
You can find one-way and return flights from ORD to LHR with Expedia. 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 our cheapest fares first, and use the Price Tracking tool to receive alerts when ORD to LHR ticket fares go up or down.
What is the cheapest month to fly from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
If you're looking for the cheapest time to fly from Chicago O'Hare International Airport (ORD) to London Heathrow (LHR), September is typically your best bet. You can expect average return flights to be around AU$1025 during this month. September often sees lower prices because the peak summer travel season has ended, and demand starts to decrease. Other budget-friendly months to consider for this route include April and October.
Which airlines fly direct from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
There are 3 airlines offering direct flights from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow). Here are the carriers:
  • American Airlines operates 23 direct flights from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow) every week.
  • British Airways operates 22 direct flights from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow) every week.
  • United operates 21 direct flights from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow) every week.
What is the cheapest airline that flies from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
American Eagle offers one of the cheapest connecting return flights on this route, with tickets starting from around AU$1282. United is one of the cheapest airlines offering nonstop return flights from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow), with tickets starting from around AU$2001 for flights that can be booked for departure within the next year. 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.
How do I find cheap flights from Chicago, IL (ORD) to London (LHR)?
To find a cheap flight from Chicago, IL (ORD) to London (LHR), 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 Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
The best airline to fly with from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow) 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. American Airlines offers the most daily flights from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow), 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 Chicago, IL (ORD) to London (LHR)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
You'll find approximately 9 nonstop flights per day from Chicago O'Hare International (ORD) to London Heathrow (LHR). For even more choices, look at flights that include layovers, as there are around 233 connecting flights per day. Some common connection points include John F. Kennedy International (JFK), Logan International (BOS), and Pearson International (YYZ).
What is the earliest flight from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
The earliest flight from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow) typically departs around 12:10 AM local time. This service is operated by American Airlines and British Airways. This is a seasonal service, active only in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
You'll typically find the most flights from Chicago O'Hare International Airport (ORD) to London Heathrow (LHR) on a Wednesday, with around 140 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United, American Airlines, and Delta. Looking at the week, Wednesday offers notably more flight options compared to other days, ensuring you have a good selection to choose from.
What are the most popular departure times for flights from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
The most popular departure times for flights from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow) are in the afternoon, from 3pm to 6pm. Many major carriers, including United, American Airlines and Aer Lingus, offer flights during this window. Many travellers prefer this time as it allows for a full day of activities before heading to the airport, and you'll arrive in London in the morning, ready to start your day.
How long does it take to fly from Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
Flying nonstop from ORD to LHR takes around 7 hours 50 minutes, with the route covering approximately 6,346 kilometers. Flights with a layover typically take 5 hours 40 minutes longer than direct options. 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 Chicago, IL (ORD-O'Hare Intl.) to London (LHR-Heathrow)?
Yes, you can fly business class or first class between ORD and LHR. Airlines that offer business class service on this route include:
  • Swiss International Air Lines
  • TAP Portugal
  • Avianca
  • Lufthansa
  • Air France
  • Iberia
  • SAS
  • Icelandair
  • Turkish Airlines
  • ITA Airways
  • Aer Lingus
  • Republic Airlines
  • KLM
  • LOT-Polish Airlines
  • British Airways
  • Air Canada
  • Alaska Airlines
  • United
  • Austrian Airlines
  • Delta
  • Finnair
  • American Airlines
  • Ethiopian Airlines
  • American Eagle
First class cabins are available on Swiss International Air Lines, Lufthansa, British Airways, Alaska Airlines, and American Airlines.
How do I earn miles on a Chicago, IL (ORD) to London (LHR) flight with Expedia?
It's easy to earn miles on a Chicago, IL (ORD) to London (LHR) 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 London (LHR) from Chicago, IL (ORD)?
If you're planning to travel to London from O'Hare Intl. (ORD), you can fly directly into Heathrow (LHR). Some flights may connect through major hubs like Logan Intl. (BOS), Liberty Intl. (EWR), or Kastrup (CPH) before reaching London. 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 Chicago, IL (ORD) to London (LHR) at the last minute?
Typically, booking a last minute flight from Chicago, IL (ORD) to London (LHR) 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 Chicago, IL (ORD) to London (LHR) flight and hotel package?
Securing a Chicago, IL (ORD) to London (LHR) flight and hotel package 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 Chicago, IL (ORD) to London (LHR)?
If you booked your Chicago, IL (ORD) to London (LHR) 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
O'Hare Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, LOT-Polish Airlines, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic
Roundtrip price
AU$1,030
Distance
6307 km
Average flight time
13 hours 59 mins

Book with confidence

Your quick guide to flights from Chicago to London

Pick up great flights from Chicago to London

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Chicago to London. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Chicago to London that take around hours.

Find cheap flights from Chicago to London

From the great flight deals with prices currently ranging from AU$1,031 to AU$1,263, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Chicago to London around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to London is normally in September.

Reasons to book your flight from Chicago to London with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Chicago to London across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to London right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Chicago to London

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