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

Compare London to Chicago O'Hare International flight deals

Find the cheapest month or even day of the year to fly to Chicago O'Hare International

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Flight deals from London to Chicago O'Hare International

Looking for a cheap last-minute deal or the best return flight from London to Chicago O'Hare International Airport? If you want to travel next month, return fares start from $1,099. Find the lowest prices on one-way and return tickets right here.

Chicago.$897 per passenger.Departing Wed, 23 Sep, returning Thu, 8 Oct.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Wed, 23 Sep, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Thu, 8 Oct, arriving in London Heathrow.Price includes taxes and charges.From $897, select.

Chicago.$897 per passenger.Departing Thu, 29 Oct, returning Sun, 8 Nov.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Thu, 29 Oct, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 8 Nov, arriving in London Gatwick.Price includes taxes and charges.From $897, select.

Chicago.$898 per passenger.Departing Wed, 16 Sep, returning Thu, 24 Sep.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Wed, 16 Sep, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Thu, 24 Sep, arriving in London Heathrow.Price includes taxes and charges.From $898, select.

Chicago.$898 per passenger.Departing Wed, 7 Oct, returning Wed, 28 Oct.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Wed, 7 Oct, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Wed, 28 Oct, arriving in London Heathrow.Price includes taxes and charges.From $898, select.

Chicago.$899 per passenger.Departing Tue, 24 Nov, returning Wed, 2 Dec.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Tue, 24 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Wed, 2 Dec, arriving in London Gatwick.Price includes taxes and charges.From $899, select.

Chicago.$899 per passenger.Departing Thu, 3 Dec, returning Sun, 6 Dec.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Thu, 3 Dec, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 6 Dec, arriving in London Gatwick.Price includes taxes and charges.From $899, select.

Chicago.$899 per passenger.Departing Thu, 5 Nov, returning Sun, 8 Nov.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Thu, 5 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 8 Nov, arriving in London Gatwick.Price includes taxes and charges.From $899, select.

Chicago.$948 per passenger.Departing Sat, 29 Aug, returning Sat, 5 Sep.Return flight with Ryanair and Icelandair.Outbound indirect flight with Ryanair, departs from London Stansted on Sat, 29 Aug, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Sat, 5 Sep, arriving in London Stansted.Price includes taxes and charges.From $948, select.

Chicago.$948 per passenger.Departing Fri, 5 Feb, returning Tue, 9 Feb.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Fri, 5 Feb, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Tue, 9 Feb, arriving in London Gatwick.Price includes taxes and charges.From $948, select.

Chicago.$949 per passenger.Departing Wed, 26 Aug, returning Mon, 31 Aug.Return flight with easyJet and Icelandair.Outbound indirect flight with easyJet, departs from London Luton on Wed, 26 Aug, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Mon, 31 Aug, arriving in London Luton.Price includes taxes and charges.From $949, select.

Chicago.$949 per passenger.Departing Thu, 25 Feb, returning Tue, 2 Mar.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Thu, 25 Feb, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Tue, 2 Mar, arriving in London Gatwick.Price includes taxes and charges.From $949, select.

Chicago.$951 per passenger.Departing Mon, 15 Mar, returning Wed, 24 Mar.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Mon, 15 Mar, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Wed, 24 Mar, arriving in London Gatwick.Price includes taxes and charges.From $951, select.

Chicago.$964 per passenger.Departing Sun, 25 Apr, returning Sun, 2 May.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Sun, 25 Apr, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Sun, 2 May, arriving in London Gatwick.Price includes taxes and charges.From $964, select.

Chicago.$974 per passenger.Departing Tue, 20 Oct, returning Fri, 8 Jan.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Tue, 20 Oct, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Fri, 8 Jan, arriving in London Heathrow.Price includes taxes and charges.From $974, select.

Chicago.$975 per passenger.Departing Fri, 7 May, returning Wed, 19 May.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Fri, 7 May, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Wed, 19 May, arriving in London Heathrow.Price includes taxes and charges.From $975, select.

Chicago.$985 per passenger.Departing Fri, 22 Jan, returning Fri, 29 Jan.Return flight with Scandinavian Airlines.Outbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Fri, 22 Jan, arriving in Chicago O'Hare International.Inbound indirect flight with Scandinavian Airlines, departs from Chicago O'Hare International on Fri, 29 Jan, arriving in London Heathrow.Price includes taxes and charges.From $985, select.

Find the cheapest month to fly from London to Chicago O'Hare International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Chicago O'Hare International flights are currently cheapest in September.

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Direct flights from London to Chicago O'Hare International

London to Chicago O'Hare International: Alternative routes

Compare routes from London to Chicago below. You may find an airport to fly into that's cheaper, faster, or easier than Chicago O'Hare International.

London to Chicago: Flight information

The things to know before you go.

Cheapest flight found	$897
Cheapest month to fly	September
Average flight time	8 hrs, 58 mins
Most popular airline	American Airlines
Average flights per week	776

Finding cheap flights from London to Chicago O'Hare International: Frequently asked questions

How much are return flights from London to Chicago O'Hare International?

The best price we found for a return flight from London to Chicago O'Hare International is $897. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from London to Chicago O'Hare International?

8 hours and 58 minutes is the average flight time from London to Chicago O'Hare International.

Which airlines fly direct from London to Chicago O'Hare International?

American Airlines, Alaska Airlines and British Airways fly direct from London to Chicago O'Hare International.

How many flights are there a week from London to Chicago O'Hare International?

As of June 2026, there are 388 flights per week flying from London to Chicago O'Hare International.

When is the cheapest time to fly from London to Chicago O'Hare International?

The cheapest month to fly from London to Chicago O'Hare International is usually September.

Which upcoming date is cheapest to fly from London to Chicago O'Hare International Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Chicago O'Hare International Airport on Wednesday, 23 September 2026.

Can I get a direct flight from London to Chicago O'Hare International Airport?

Yes – the average flight time is 8 hours and 58 minutes.

How can I find the best flight deal to Chicago O'Hare International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago O'Hare International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Chicago?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from London to Chicago O'Hare International Airport (ORD): What you need to know

Planning your holiday begins with figuring out where you'll fly out of in London. London Heathrow Airport (LHR) is the city's main base, so check out your options for booking a flight from London to Chicago O'Hare International Airport (ORD) departing from here.
Expect to be in the air for 8 hours 55 minutes. On average, that's the time it takes for a direct London to Chicago O'Hare International Airport flight.
Chicago is six hours behind London. Chicago O'Hare International Airport is located in Chicago, which runs on the UTC-6 timezone.
With 57 direct flights a week between the two airports, London Heathrow Airport (LHR) to Chicago O'Hare International Airport (ORD) is the busiest route. United Airlines operates the earliest flight at 8:30am. If you prefer to get more out of your day before flying, the latest departure from LHR to ORD is with British Airways at 3:45pm.
Your flight from London to ORD won't wait if you're running late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.
Flying during a peak time such as July? Public holidays and other popular seasons can mean longer lines at security. Play things extra safe and arrive up to four hours before international flights and two hours before domestic departures.

Airports in London

London Heathrow Airport (LHR)

Fly without interruptions from London Heathrow Airport (LHR). Nonstop flights from London to Chicago O'Hare International Airport (ORD) are available from here.
Pick from a variety of airlines operating direct flights from London to Chicago O'Hare International Airport leaving from LHR. Book your ticket with one of these:
The most frequently booked airline between LHR and ORD is United.
Among carriers operating on this route, United has the highest percentage of on-time landings.
We make it easy to find cheap flights from London to ORD with a stopover. To explore your options departing from London Heathrow Airport (LHR), uncheck 'Direct flights only.' Then, simply choose a flight that has a stop long enough to tour the city of your choice. Popular stopovers between LHR and ORD include:
- Toronto Pearson International Airport (YYZ)
- Dublin Airport (DUB)
- Montreal-Trudeau International Airport (YUL)
Travelling from central London to LHR takes about 25 minutes by public transport. If you drive, ride-share or get a taxi, you'll cover the 24 kilometres in 45 minutes or so, depending on traffic conditions.
Booked an early flight from London to Chicago O'Hare International Airport? Avoid the stress of rushing to the terminal (and get a little more snooze time) by choosing one of these stays close to London Heathrow Airport:
Of the departures from London Heathrow Airport, 78% arrive as scheduled at their destination.

London Gatwick Airport (LGW)

Split up your flight from London to Chicago O'Hare International Airport with a stop so you can stretch your legs or cross a new place off your list. Popular stopovers between London Gatwick Airport and ORD are:
- Toronto Pearson International Airport (YYZ)
- Dublin Airport (DUB)
- Keflavik Airport (KEF)
LGW is about 48 kilometres from central London. It'll take 1 hour 5 minutes or so to get to the airport driving from the city centre. Public transport takes approximately 1 hour 20 minutes.
Want to treat yourself to an extra night away before catching your London to ORD flight? Unwind in a hotel near London Gatwick Airport before your break officially starts. Here's where you can stay:
London Gatwick Airport has a track record for punctuality. 82% of flights taking off from here keep to their planned arrival schedule.

London Stansted Airport (STN)

Book a plane ticket from London to Chicago O'Hare International Airport (ORD) out of London Stansted Airport (STN) with one or more stops. Popular stopovers between STN and ORD are:
- Copenhagen Airport (CPH)
- Dublin Airport (DUB)
- Edinburgh Airport (EDI)
From central London, STN is around 56 kilometres away. It'll take you roughly 1 hour 5 minutes to get there by car and 45 minutes or so on public transport.
Rest a little longer, move a little slower, and still make your London to Chicago O'Hare International Airport flight with time to spare. These accommodation options near London Stansted Airport make it a breeze to get to the terminal if you're flying out early:
STN has an on-time performance rate of 80%. This means the majority of its flights land on schedule and your trip goes off without a hitch.

About Chicago O'Hare International Airport (ORD)

The last thing you want is a long journey to your hotel if you're getting in late on a flight from London to Chicago O'Hare International Airport. Book one of these accommodation options near ORD instead:
To get the lowest price, book your ride around four weeks in advance of your London to Chicago O'Hare International Airport flight.
You'll find ORD at 10000 West O'Hare.

Getting from Chicago O'Hare International Airport (ORD) to central Chicago

Central Chicago is around 27 kilometres from Chicago O'Hare International Airport and takes about 30 minutes to reach by car. Work out your options for getting into the city, whether that's with a car hire, taxi or ride-share.
It'll take around 45 minutes when travelling by public transport.

How to find the cheapest flights from London to Chicago O'Hare International Airport (ORD)

Right now, $478 is the best price we've found for a one-way ticket from London to Chicago O'Hare International Airport. The cheapest price for a return flight is $897. Remember fares can change due to demand at the time of booking.
Don't wait until the last minute. You're more likely to find cheap flights from London to ORD if you book ahead. Airlines often offer some excellent early bird deals.
If you can be flexible with your travel plans, use the 'Whole month' search tool. It'll give you the lowest price across every month when searching for your London to Chicago O'Hare International Airport ticket.
There's no need to check every day to find out if prices have dropped when you create a Price Alert. We'll notify you when a new deal shows up on plane tickets from London to ORD.
Tailor your trip using filters. Select your preferred departure and arrival times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from London to Chicago O'Hare International Airport.

The best time to fly from London to Chicago O'Hare International Airport (ORD)

January is the quietest month for flights from London to Chicago O'Hare International Airport (ORD), while July is the busiest. Choose the ideal time to visit Chicago based on whether you like a bustling atmosphere or a more laid-back vibe.
When booking your London to ORD plane ticket, consider what kind of weather works for you. July is the warmest month in Chicago, with temperatures ranging from 16ºC (61ºF) to 28ºC (82ºF).
If you'd rather travel in cooler conditions, look for a cheap ticket from London to Chicago O'Hare International Airport in January when temperatures are between -12ºC (10ºF) and 3ºC (37ºF).

More about Chicago

After booking your flight from London to Chicago O'Hare International Airport, find a hotel that's got location and comfort covered. Make one of these accommodation options your base for exploring Chicago:
Millennium Park and Art Institute of Chicago are just the start of the top attractions to put on your Chicago to-do list. Keep the sightseeing going at Willis Tower.

Explore more of the United States

Indianapolis is just one of the many places in the United States waiting to be discovered once you've taken in the sights of Chicago. Around 290 kilometres away to the southeast, its top attractions include Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis.
Milwaukee is another well-known destination in the United States and is around 121 kilometres north of Chicago. No trip is complete without visiting Richards Duplex Apartments by Frank Lloyd Wright, Miller Park and Milwaukee County Zoo.