
Popular airlines from St. Louis Lambert Intl. Airport (STL) to Heathrow Airport (LHR)
- British Airways
British Airways
- Iberia
Iberia
- Lufthansa
Lufthansa
- Air Canada
Air Canada
- Virgin Atlantic
Virgin Atlantic
- Austrian Airlines
Austrian Airlines
- Finnair
Finnair
- Plan, book, fly with confidence
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Cheap flights from St. Louis to London (STL-LHR)
Prices were available within the past 7 days and start at €342 for one-way flights and €449 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€449 Return, found 3 days ago
€449
Return
found 3 days ago

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€449 Return, found 3 days ago
€449
Return
found 3 days ago

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€449 Return, found 3 days ago
€449
Return
found 3 days ago

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€465 Return, found 3 days ago
€465
Return
found 3 days ago

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€499 Return, found 3 days ago
€499
Return
found 3 days ago

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€515 Return, found 3 days ago
€515
Return
found 3 days ago

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€543 Return, found 3 days ago
€543
Return
found 3 days ago

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€544 Return, found 3 days ago
€544
Return
found 3 days ago

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€548 Return, found 3 days ago
€548
Return
found 3 days ago

Sun, 21 Sep - Tue, 7 Oct
STL
St. Louis
LHR
London
€553 Return, found 3 days ago
€553
Return
found 3 days ago
Find the cheapest month to fly from St. Louis (STL) to London (LHR)
October is typically the cheapest month to fly
From €455 - €1,301 per traveller.
Graph displaying average flight prices per month
Origin airport | Lambert-St. Louis Intl. |
Destination airport | Heathrow |
Return price | €448 |
Distance | 6703 km |
Perfect flights from St. Louis to London
Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from St. Louis 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 Lambert-St. Louis Intl. to Heathrow ticket options cater to your travel preferences, with incredible one-way fares from €342 and roundtrip prices from €449. 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.
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