S$482 Cheap Flights from St. Louis to London

View S$482 flight on Sun, 18 Jan, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Heathrow Airport (LHR)

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Cheap Flights from St. Louis to London (STL-LHR)

Prices were available within the past 7 days and start at S$482 for one-way flights and S$789 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$789 Return, found 4 days ago
S$789
Return
found 4 days ago
Select British Airways flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$789 found 4 days ago
British Airways
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$798 Return, found 4 days ago
S$798
Return
found 4 days ago
Select British Airways flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$798 found 4 days ago
Air Canada
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$809 Return, found 4 days ago
S$809
Return
found 4 days ago
Select Air Canada flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$809 found 4 days ago
United
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$826 Return, found 4 days ago
S$826
Return
found 4 days ago
Select United flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$826 found 4 days ago
Delta
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$832 Return, found 4 days ago
S$832
Return
found 4 days ago
Select Delta flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$832 found 4 days ago
Virgin Atlantic
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$835 Return, found 4 days ago
S$835
Return
found 4 days ago
Select Virgin Atlantic flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$835 found 4 days ago
United
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$835 Return, found 4 days ago
S$835
Return
found 4 days ago
Select United flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$835 found 4 days ago
Delta
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$835 Return, found 4 days ago
S$835
Return
found 4 days ago
Select Delta flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$835 found 4 days ago
Delta
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$836 Return, found 4 days ago
S$836
Return
found 4 days ago
Select Delta flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$836 found 4 days ago
Delta
Sun, 18 Jan - Tue, 27 Jan
STL
St. Louis
LHR
London
S$839 Return, found 4 days ago
S$839
Return
found 4 days ago
Select Delta flight, departing Sun, 18 Jan from St. Louis to London, returning Tue, 27 Jan, priced at S$839 found 4 days ago

Find the cheapest month to fly from St. Louis (STL) to London (LHR)

November is typically the cheapest month to fly

From S$670 - S$1,894 per traveller.

Frequently asked questions

How much is a flight from St. Louis Lambert International Airport to LHR?
Pack your bags, because round-trip flights between STL and LHR start from S$789. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can go up quickly, so book now to lock in the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to London Heathrow?
This can differ between air carriers, as each one has its own terms and conditions. Visit the Customer Service Portal, where there are easy instructions on how to cancel online.
How do I find cheap flights from St. Louis Lambert International Airport to Heathrow Airport 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 Lambert-St. Louis Intl. Airport (STL) to Heathrow Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from St. Louis Lambert International Airport to LHR?
With around 6,800 kilometres separating St. Louis and Hounslow, your flight will be a long one. Pack wisely to make your time in the air comfortable. Things like a spare pair of socks and a cosy travel pillow should be in your hand luggage.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to London Heathrow?
Unfortunately, there aren't any airlines that fly directly between St. Louis Lambert International Airport and Heathrow Airport. You'll need to book a flight with one or more stops.
Are Lambert-St. Louis Intl. Airport (STL) to Heathrow Airport (LHR) flight tickets cheaper when they're purchased at the last minute?
It is possible to get an awesome last-minute deal from Lambert Field 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 pounce when you see a bargain. Expedia compares air carrier prices and updates flight deals frequently, so you can rest easy knowing you're always seeing the latest offers.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Heathrow
Return price
S$789
Distance
6703 km

Book with confidence

Perfect flights from St. Louis to London

Your Journey from St. Louis to London

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With Expedia, you have access to a wide range of airlines, including Delta, Virgin Atlantic, British Airways, United, Air Canada, KLM, Air France. Our selection of flights from Lambert-St. Louis Intl. to Heathrow 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 Vibrant London

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from St. Louis to London

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