€300 Cheap Flights Chicago to London (ORD-LHR)

View €300 flight on Mon, 4 May 2026Opens in a new window

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

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Cheap flights from Chicago to London (ORD-LHR)

Prices were available within the past 7 days and start at €300 for one-way flights and €654 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Sun, 3 May - Tue, 19 May
ORD
Chicago
LHR
London
€654 Return, found 1 day ago
€654
Return
found 1 day ago
Select Icelandair flight, departing Sun, 3 May from Chicago to London, returning Tue, 19 May, priced at €654 found 1 day ago
Scandinavian Airlines
Mon, 27 Apr - Mon, 4 May
ORD
Chicago
LHR
London
€684 Return, found 1 day ago
€684
Return
found 1 day ago
Select Scandinavian Airlines flight, departing Mon, 27 Apr from Chicago to London, returning Mon, 4 May, priced at €684 found 1 day ago
Aer Lingus
Sun, 3 May - Tue, 12 May
ORD
Chicago
LHR
London
€722 Return, found 10 hours ago
€722
Return
found 10 hours ago
Select Aer Lingus flight, departing Sun, 3 May from Chicago to London, returning Tue, 12 May, priced at €722 found 10 hours ago
United
Sun, 3 May - Tue, 19 May
ORD
Chicago
LHR
London
€733 Return, found 1 day ago
€733
Return
found 1 day ago
Select United flight, departing Sun, 3 May from Chicago to London, returning Tue, 19 May, priced at €733 found 1 day ago
Virgin Atlantic
Mon, 27 Apr - Mon, 4 May
ORD
Chicago
LHR
London
€737 Return, found 1 day ago
€737
Return
found 1 day ago
Select Virgin Atlantic flight, departing Mon, 27 Apr from Chicago to London, returning Mon, 4 May, priced at €737 found 1 day ago
KLM
Mon, 27 Apr - Mon, 4 May
ORD
Chicago
LHR
London
€737 Return, found 1 day ago
€737
Return
found 1 day ago
Select KLM flight, departing Mon, 27 Apr from Chicago to London, returning Mon, 4 May, priced at €737 found 1 day ago
Iberia
Sun, 3 May - Tue, 19 May
ORD
Chicago
LHR
London
€739 Return, found 1 day ago
€739
Return
found 1 day ago
Select Iberia flight, departing Sun, 3 May from Chicago to London, returning Tue, 19 May, priced at €739 found 1 day ago
Air France
Sun, 19 Apr - Tue, 28 Apr
ORD
Chicago
LHR
London
€743 Return, found 2 days ago
€743
Return
found 2 days ago
Select Air France flight, departing Sun, 19 Apr from Chicago to London, returning Tue, 28 Apr, priced at €743 found 2 days ago
Swiss International Air Lines
Mon, 17 Aug - Wed, 26 Aug
ORD
Chicago
LHR
London
€743 Return, found 5 days ago
€743
Return
found 5 days ago
Select Swiss International Air Lines flight, departing Mon, 17 Aug from Chicago to London, returning Wed, 26 Aug, priced at €743 found 5 days ago
American Airlines
Mon, 27 Apr - Mon, 4 May
ORD
Chicago
LHR
London
€751 Return, found 1 day ago
€751
Return
found 1 day ago
Select American Airlines flight, departing Mon, 27 Apr from Chicago to London, returning Mon, 4 May, priced at €751 found 1 day ago

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

May is typically the cheapest month to fly

From €492 - €930 per traveller.

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 €654. 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.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, 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, United, Virgin Atlantic
Return price
€654
Distance
6307 km
Average flight time
14 hours 2 mins

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