£180 Cheap Flights from Chicago (ORD) to London (LHR)

View £180 flight on Sun, 3 Aug 2025Opens 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 and start at £180 for one-way flights and £374 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 4 Aug - Mon, 25 Aug
ORD
Chicago
LHR
London
£374 Return, found 1 day ago
£374
Return
found 1 day ago
Select American Airlines flight, departing Mon, 4 Aug from Chicago to London, returning Mon, 25 Aug, priced at £374 found 1 day ago
British Airways
Tue, 26 Aug - Mon, 1 Sep
ORD
Chicago
LHR
London
£375 Return, found 23 hours ago
£375
Return
found 23 hours ago
Select British Airways flight, departing Tue, 26 Aug from Chicago to London, returning Mon, 1 Sep, priced at £375 found 23 hours ago
Virgin Atlantic
Tue, 26 Aug - Mon, 1 Sep
ORD
Chicago
LHR
London
£380 Return, found 23 hours ago
£380
Return
found 23 hours ago
Select Virgin Atlantic flight, departing Tue, 26 Aug from Chicago to London, returning Mon, 1 Sep, priced at £380 found 23 hours ago
Icelandair
Wed, 10 Dec - Sun, 18 Jan
ORD
Chicago
LHR
London
£382 Return, found 2 days ago
£382
Return
found 2 days ago
Select Icelandair flight, departing Wed, 10 Dec from Chicago to London, returning Sun, 18 Jan, priced at £382 found 2 days ago
British Airways
Wed, 13 Aug - Tue, 19 Aug
ORD
Chicago
LHR
London
£385 Return, found 1 day ago
£385
Return
found 1 day ago
Select British Airways flight, departing Wed, 13 Aug from Chicago to London, returning Tue, 19 Aug, priced at £385 found 1 day ago
Iberia
Sun, 3 Aug - Tue, 12 Aug
ORD
Chicago
LHR
London
£385 Return, just found
£385
Return
just found
Select Iberia flight, departing Sun, 3 Aug from Chicago to London, returning Tue, 12 Aug, priced at £385 just found
Scandinavian Airlines
Thu, 2 Oct - Mon, 6 Oct
ORD
Chicago
LHR
London
£389 Return, found 4 days ago
£389
Return
found 4 days ago
Select Scandinavian Airlines flight, departing Thu, 2 Oct from Chicago to London, returning Mon, 6 Oct, priced at £389 found 4 days ago
Air France
Mon, 4 Aug - Mon, 25 Aug
ORD
Chicago
LHR
London
£403 Return, found 1 day ago
£403
Return
found 1 day ago
Select Air France flight, departing Mon, 4 Aug from Chicago to London, returning Mon, 25 Aug, priced at £403 found 1 day ago
KLM
Mon, 4 Aug - Mon, 25 Aug
ORD
Chicago
LHR
London
£439 Return, found 1 day ago
£439
Return
found 1 day ago
Select KLM flight, departing Mon, 4 Aug from Chicago to London, returning Mon, 25 Aug, priced at £439 found 1 day ago
Aer Lingus
Mon, 17 Nov - Thu, 27 Nov
ORD
Chicago
LHR
London
£443 Return, found 3 days ago
£443
Return
found 3 days ago
Select Aer Lingus flight, departing Mon, 17 Nov from Chicago to London, returning Thu, 27 Nov, priced at £443 found 3 days ago

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

November is typically the cheapest month to fly

From £336 - £529 per traveller.

Graph displaying average flight prices per month

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Flight from Chicago to London route information
Origin airport
O'Hare Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, Austrian Airlines, British Airways, Brussels Airlines, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Return price
£373
Distance
6307 km

Compare flights from Chicago to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Chicago to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from O'Hare Intl. to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from O'Hare Intl. (ORD) to Heathrow (LHR)

The easiest way to view the best deals on flights from Chicago to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from O'Hare Intl. to Heathrow start at just £374 and range up to £443.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Chicago and London
  • booking your flight during August, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Chicago to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from O'Hare Intl. to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from O'Hare Intl. Airport (ORD) to London Heathrow?
If you're travelling from O'Hare Intl. Airport (ORD) to Heathrow Airport (LHR), round-trip flights start from £374. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't delay. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from O'Hare Intl. Airport (ORD) to Heathrow Airport?
Most flights can be cancelled online, but each airline has a different set of terms and conditions. If you do need to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from ORD to LHR that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for O'Hare Airport to Heathrow Airport (LHR) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from ORD to London Heathrow?
With a flight distance of 6,400 kilometres between O'Hare Intl. Airport (ORD) and London Heathrow, this is a long trip. Make sure you stay hydrated and go for a short walk down the aisle every so often.
Which airlines fly direct from ORD to London Heathrow?
Many people like to fly with United Airlines (UA) from O'Hare Intl. Airport (ORD) to LHR. This popular airline offers 91 monthly flights, so you can easily find a flight time that's perfect for you. For more options, check out the ticket prices from British Airways (BA). This airlines operates 60 monthly flights between these airports.
Are O'Hare Airport to LHR flight tickets cheaper when they're purchased at the last minute?
It is possible to find an amazing last-minute deal from ORD to Heathrow Airport, but it's also possible to miss out altogether! As many airlines release prices up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to book when you spot a bargain. Expedia compares carrier prices and updates flight deals frequently, so you can rest easy knowing you're always seeing the latest offers.

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