฿12,585 Cheap Flights from Chicago (ORD) to London (LHR)

View ฿12,585 flight on Mon, 5 Jan 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 and start at ฿12,585 for one-way flights and ฿17,485 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Sun, 3 May - Tue, 12 May
ORD
Chicago
LHR
London
฿17,485 Return, found 5 days ago
฿17,485
Return
found 5 days ago
Select Icelandair flight, departing Sun, 3 May from Chicago to London, returning Tue, 12 May, priced at ฿17,485 found 5 days ago
United
Mon, 26 Jan - Tue, 3 Feb
ORD
Chicago
LHR
London
฿19,645 Return, found 4 days ago
฿19,645
Return
found 4 days ago
Select United flight, departing Mon, 26 Jan from Chicago to London, returning Tue, 3 Feb, priced at ฿19,645 found 4 days ago
United
Mon, 16 Mar - Mon, 23 Mar
ORD
Chicago
LHR
London
฿19,685 Return, found 2 days ago
฿19,685
Return
found 2 days ago
Select United flight, departing Mon, 16 Mar from Chicago to London, returning Mon, 23 Mar, priced at ฿19,685 found 2 days ago
Air Canada
Mon, 16 Mar - Mon, 23 Mar
ORD
Chicago
LHR
London
฿19,795 Return, found 2 days ago
฿19,795
Return
found 2 days ago
Select Air Canada flight, departing Mon, 16 Mar from Chicago to London, returning Mon, 23 Mar, priced at ฿19,795 found 2 days ago
Icelandair
Mon, 16 Mar - Mon, 23 Mar
ORD
Chicago
LHR
London
฿19,815 Return, found 2 days ago
฿19,815
Return
found 2 days ago
Select Icelandair flight, departing Mon, 16 Mar from Chicago to London, returning Mon, 23 Mar, priced at ฿19,815 found 2 days ago
TAP Portugal
Sun, 3 May - Tue, 12 May
ORD
Chicago
LHR
London
฿19,830 Return, found 5 days ago
฿19,830
Return
found 5 days ago
Select TAP Portugal flight, departing Sun, 3 May from Chicago to London, returning Tue, 12 May, priced at ฿19,830 found 5 days ago
United
Mon, 26 Jan - Tue, 3 Feb
ORD
Chicago
LHR
London
฿20,545 Return, found 4 days ago
฿20,545
Return
found 4 days ago
Select United flight, departing Mon, 26 Jan from Chicago to London, returning Tue, 3 Feb, priced at ฿20,545 found 4 days ago
Swiss International Air Lines
Mon, 16 Mar - Mon, 23 Mar
ORD
Chicago
LHR
London
฿20,585 Return, found 2 days ago
฿20,585
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, 16 Mar from Chicago to London, returning Mon, 23 Mar, priced at ฿20,585 found 2 days ago
Delta
Mon, 26 Jan - Tue, 3 Feb
ORD
Chicago
LHR
London
฿20,725 Return, found 4 days ago
฿20,725
Return
found 4 days ago
Select Delta flight, departing Mon, 26 Jan from Chicago to London, returning Tue, 3 Feb, priced at ฿20,725 found 4 days ago
Air Canada
Mon, 26 Jan - Tue, 3 Feb
ORD
Chicago
LHR
London
฿20,865 Return, found 4 days ago
฿20,865
Return
found 4 days ago
Select Air Canada flight, departing Mon, 26 Jan from Chicago to London, returning Tue, 3 Feb, priced at ฿20,865 found 4 days ago

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

November is typically the cheapest month to fly

From ฿14,381 - ฿22,970 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 ฿17,485. 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
Return price
฿17,485
Distance
6307 km
Average flight time
13 hours 55 mins

Book with confidence

Perfect flights from Chicago to London

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Chicago to London. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible O'Hare Intl. to Heathrow ticket options cater to your travel preferences, with incredible one-way fares from ฿12,585 and roundtrip prices from ฿17,485. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Heathrow and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in London.
Perfect flights from Chicago to London
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