S$569 Cheap Flights from St. Louis to London

View S$569 flight on Wed, 26 Nov, 2025Opens 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$569 for one-way flights and S$992 for return, for the period specified. Prices and availability are subject to change. Additional terms apply.
United
Wed, 26 Nov - Sun, 30 Nov
STL
St. Louis
LHR
London
S$992
Return
Found 2 days ago
Select United flight, departing Wed, 26 Nov from St. Louis to London, returning Sun, 30 Nov, priced at S$992 Found 2 days ago
Air Canada
Wed, 26 Nov - Sun, 30 Nov
STL
St. Louis
LHR
London
S$1,001
Return
Found 2 days ago
Select Air Canada flight, departing Wed, 26 Nov from St. Louis to London, returning Sun, 30 Nov, priced at S$1,001 Found 2 days ago
Delta
Fri, 25 Jul - Sat, 2 Aug
STL
St. Louis
LHR
London
S$1,004
Return
Found 1 day ago
Select Delta flight, departing Fri, 25 Jul from St. Louis to London, returning Sat, 2 Aug, priced at S$1,004 Found 1 day ago
United
Wed, 26 Nov - Sun, 30 Nov
STL
St. Louis
LHR
London
S$1,009
Return
Found 2 days ago
Select United flight, departing Wed, 26 Nov from St. Louis to London, returning Sun, 30 Nov, priced at S$1,009 Found 2 days ago
Air Canada
Wed, 26 Nov - Sun, 30 Nov
STL
St. Louis
LHR
London
S$1,018
Return
Found 2 days ago
Select Air Canada flight, departing Wed, 26 Nov from St. Louis to London, returning Sun, 30 Nov, priced at S$1,018 Found 2 days ago
Lufthansa
Wed, 26 Nov - Sun, 30 Nov
STL
St. Louis
LHR
London
S$1,042
Return
Found 2 days ago
Select Lufthansa flight, departing Wed, 26 Nov from St. Louis to London, returning Sun, 30 Nov, priced at S$1,042 Found 2 days ago
Lufthansa
Wed, 26 Nov - Sun, 30 Nov
STL
St. Louis
LHR
London
S$1,058
Return
Found 2 days ago
Select Lufthansa flight, departing Wed, 26 Nov from St. Louis to London, returning Sun, 30 Nov, priced at S$1,058 Found 2 days ago
Lufthansa
Wed, 26 Nov - Sun, 30 Nov
STL
St. Louis
LHR
London
S$1,058
Return
Found 2 days ago
Select Lufthansa flight, departing Wed, 26 Nov from St. Louis to London, returning Sun, 30 Nov, priced at S$1,058 Found 2 days ago
United
Wed, 26 Nov - Sun, 30 Nov
STL
St. Louis
LHR
London
S$1,061
Return
Found 2 days ago
Select United flight, departing Wed, 26 Nov from St. Louis to London, returning Sun, 30 Nov, priced at S$1,061 Found 2 days ago
Austrian Airlines
Wed, 26 Nov - Sun, 30 Nov
STL
St. Louis
LHR
London
S$1,249
Return
Found 2 days ago
Select Austrian Airlines flight, departing Wed, 26 Nov from St. Louis to London, returning Sun, 30 Nov, priced at S$1,249 Found 2 days ago
St. Louis to London route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Heathrow
Return price
S$992
Distance
6703 km

Perfect flights from St. Louis to London

Your Journey from St. Louis to London

Start your unforgettable journey with Expedia. Our broad selection of flights from St. Louis to London caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including United, Delta, Virgin Atlantic, Air Canada, KLM, Air France, Lufthansa, Austrian Airlines. 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.
 

Maximizing Value with St. Louis to London Flights

Experience the joy of finding cheap flights from Lambert-St. Louis Intl. to Heathrow that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$569 and roundtrip prices from S$992*.
 

Pre-Flight Essentials

Ensure a smooth journey from St. Louis to London with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant London

Picture yourself stepping off the plane in London and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your St. Louis 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 St. Louis to London.
 

Beyond the Flight – Exploring London

With Expedia, your adventure extends beyond the flight. Explore London at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from St. Louis to London with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from St. Louis to London with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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$992. 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.

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