€416 Cheap Flights London to St. Louis (LHR-STL)

View €416 flight on Wed, 29 Apr 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at €416 for one-way flights and €513 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Fri, 23 Jan - Thu, 5 Feb
LHR
London
STL
St. Louis
€513 Return, found 9 hours ago
€513
Return
found 9 hours ago
Select Lufthansa flight, departing Fri, 23 Jan from London to St. Louis, returning Thu, 5 Feb, priced at €513 found 9 hours ago
Lufthansa
Mon, 16 Mar - Sun, 22 Mar
LHR
London
STL
St. Louis
€514 Return, found 6 days ago
€514
Return
found 6 days ago
Select Lufthansa flight, departing Mon, 16 Mar from London to St. Louis, returning Sun, 22 Mar, priced at €514 found 6 days ago
Lufthansa
Mon, 16 Mar - Sun, 22 Mar
LHR
London
STL
St. Louis
€520 Return, found 6 days ago
€520
Return
found 6 days ago
Select Lufthansa flight, departing Mon, 16 Mar from London to St. Louis, returning Sun, 22 Mar, priced at €520 found 6 days ago
Swiss International Air Lines
Wed, 29 Apr - Tue, 5 May
LHR
London
STL
St. Louis
€523 Return, found 5 days ago
€523
Return
found 5 days ago
Select Swiss International Air Lines flight, departing Wed, 29 Apr from London to St. Louis, returning Tue, 5 May, priced at €523 found 5 days ago
Lufthansa
Wed, 29 Apr - Tue, 5 May
LHR
London
STL
St. Louis
€524 Return, found 5 days ago
€524
Return
found 5 days ago
Select Lufthansa flight, departing Wed, 29 Apr from London to St. Louis, returning Tue, 5 May, priced at €524 found 5 days ago
Swiss International Air Lines
Wed, 29 Apr - Tue, 5 May
LHR
London
STL
St. Louis
€527 Return, found 5 days ago
€527
Return
found 5 days ago
Select Swiss International Air Lines flight, departing Wed, 29 Apr from London to St. Louis, returning Tue, 5 May, priced at €527 found 5 days ago
Lufthansa
Wed, 29 Apr - Tue, 5 May
LHR
London
STL
St. Louis
€528 Return, found 5 days ago
€528
Return
found 5 days ago
Select Lufthansa flight, departing Wed, 29 Apr from London to St. Louis, returning Tue, 5 May, priced at €528 found 5 days ago
United
Wed, 29 Apr - Tue, 5 May
LHR
London
STL
St. Louis
€544 Return, found 5 days ago
€544
Return
found 5 days ago
Select United flight, departing Wed, 29 Apr from London to St. Louis, returning Tue, 5 May, priced at €544 found 5 days ago
Austrian Airlines
Fri, 23 Jan - Thu, 5 Feb
LHR
London
STL
St. Louis
€545 Return, found 9 hours ago
€545
Return
found 9 hours ago
Select Austrian Airlines flight, departing Fri, 23 Jan from London to St. Louis, returning Thu, 5 Feb, priced at €545 found 9 hours ago
British Airways
Wed, 29 Apr - Tue, 5 May
LHR
London
STL
St. Louis
€551 Return, found 5 days ago
€551
Return
found 5 days ago
Select British Airways flight, departing Wed, 29 Apr from London to St. Louis, returning Tue, 5 May, priced at €551 found 5 days ago

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

November is typically the cheapest month to fly

From €592 - €1,265 per traveller.
London to St. Louis route information
Origin airport
Heathrow
Destination airport
Lambert-St. Louis Intl.
Return price
€512
Distance
6703 km

Perfect flights from London to St. Louis

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to St. Louis. 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 Heathrow to Lambert-St. Louis Intl. ticket options cater to your travel preferences, with incredible one-way fares from €416 and roundtrip prices from €513. 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 Lambert-St. Louis Intl. 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 St. Louis.

Frequently asked questions

How much is a flight from Heathrow Airport (LHR) to Lambert Field?
The lowest price advertised for a round-trip flight from London Heathrow to Lambert-St. Louis Intl. Airport (STL) is €513. But you better move fast. This price is based on fares offered within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport (LHR) to Lambert-St. Louis Intl. Airport (STL)?
This differs between airlines, as each has its own terms and conditions. Head to the Customer Service Portal, where there are instructions on how to cancel online.
How do I find cheap flights from Heathrow Airport to St. Louis Lambert International 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 LHR to STL flights, you'll see a "no change fees" filter for you to select.
How far is the flight from LHR to Lambert-St. Louis Intl. Airport (STL)?
The distance is around 6,800 kilometres. Travel pillow? Check. Toiletries? Check. We suggest you pack all the essentials for this long-haul Hounslow to St. Louis flight.
Which airlines fly direct from LHR to Lambert-St. Louis Intl. Airport (STL)?
Flying directly between Heathrow Airport (LHR) and Lambert Field isn't possible at this time. However, you'll still be able to book a flight to St. Louis with at least one stop.
Are Heathrow Airport (LHR) to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
It is possible to find a fantastic last-minute deal from London Heathrow to Lambert Field, but it's also possible to miss out altogether! As many airlines advertise prices up to 12 months in advance, it's worth keeping an eye on fares early and being ready to book when you spot a good bargain. Expedia compares air carrier prices and updates flight deals all the time, so you can rest easy knowing you're always getting the latest offers.

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