S$495 Cheap Flights from Chicago to London

View S$495 flight on Sun, 9 Nov, 2025Opens in a new window

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

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Cheap Flights from Chicago to London (ORD-LON)

Prices were available within the past 7 days and start at S$495 for one-way flights and S$744 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 19 Aug - Wed, 27 Aug
ORD
Chicago
LHR
London
S$744 Return, found 18 hours ago
S$744
Return
found 18 hours ago
Select Delta flight, departing Tue, 19 Aug from Chicago to London, returning Wed, 27 Aug, priced at S$744 found 18 hours ago
Delta
Thu, 7 Aug - Sat, 30 Aug
ORD
Chicago
LGW
London
S$751 Return, found 18 hours ago
S$751
Return
found 18 hours ago
Select Delta flight, departing Thu, 7 Aug from Chicago to London, returning Sat, 30 Aug, priced at S$751 found 18 hours ago
Air France
Wed, 13 Aug - Wed, 27 Aug
ORD
Chicago
LHR
London
S$769 Return, found 1 day ago
S$769
Return
found 1 day ago
Select Air France flight, departing Wed, 13 Aug from Chicago to London, returning Wed, 27 Aug, priced at S$769 found 1 day ago
Air France
Wed, 13 Aug - Wed, 27 Aug
ORD
Chicago
LHR
London
S$770 Return, found 1 day ago
S$770
Return
found 1 day ago
Select Air France flight, departing Wed, 13 Aug from Chicago to London, returning Wed, 27 Aug, priced at S$770 found 1 day ago
United
Sun, 23 Nov - Sun, 30 Nov
ORD
Chicago
LHR
London
S$800 Return, found 1 day ago
S$800
Return
found 1 day ago
Select United flight, departing Sun, 23 Nov from Chicago to London, returning Sun, 30 Nov, priced at S$800 found 1 day ago
United
Thu, 20 Nov - Mon, 1 Dec
ORD
Chicago
LHR
London
S$815 Return, found 4 days ago
S$815
Return
found 4 days ago
Select United flight, departing Thu, 20 Nov from Chicago to London, returning Mon, 1 Dec, priced at S$815 found 4 days ago
Air Canada
Wed, 13 Aug - Thu, 28 Aug
ORD
Chicago
LHR
London
S$824 Return, found 17 hours ago
S$824
Return
found 17 hours ago
Select Air Canada flight, departing Wed, 13 Aug from Chicago to London, returning Thu, 28 Aug, priced at S$824 found 17 hours ago
Virgin Atlantic
Wed, 20 Aug - Wed, 27 Aug
ORD
Chicago
LHR
London
S$831 Return, found 1 day ago
S$831
Return
found 1 day ago
Select Virgin Atlantic flight, departing Wed, 20 Aug from Chicago to London, returning Wed, 27 Aug, priced at S$831 found 1 day ago
British Airways
Fri, 22 Aug - Sun, 24 Aug
ORD
Chicago
LHR
London
S$834 Return, found 2 days ago
S$834
Return
found 2 days ago
Select British Airways flight, departing Fri, 22 Aug from Chicago to London, returning Sun, 24 Aug, priced at S$834 found 2 days ago
Swiss International Air Lines
Sun, 23 Nov - Sun, 30 Nov
ORD
Chicago
LHR
London
S$849 Return, found 1 day ago
S$849
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Sun, 23 Nov from Chicago to London, returning Sun, 30 Nov, priced at S$849 found 1 day ago

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

February is typically the cheapest month to fly

From S$613 - S$950 per traveller.

Graph displaying average flight prices per month

Chicago to London route information
Origin airport
O'Hare Intl.
Destination airport
Heathrow
Return price
S$744
Distance
6307 km

Perfect flights from Chicago to London

Your Journey from Chicago to London

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Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including United, Delta, Air Canada, Virgin Atlantic, British Airways, Air France, KLM, Swiss International Air Lines. Our selection of flights from O'Hare Intl. to LON-All Airports caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

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Experience the joy of finding cheap flights from O'Hare Intl. to LON-All Airports that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$495 and roundtrip prices from S$744*.
 

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Experience the Vibrant London

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Added Convenience on Your Chicago to London Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Chicago to London.
 

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Book Your Flight from Chicago to London with Confidence

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*Note: Prices may vary based on availability and are subject to change.

Explore a world of travel with Expedia

London Airports

London

Chicago to Heathrow
S$743.60

Southampton

Chicago to Southampton
S$1,071.50
Chicago Airports

Chicago

*Available to Expedia members.