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Uncover the best deals on St Louis to London flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest STL - LHR Flights
Useful information for finding best airline tickets from Lambert St Louis International to London Heathrow on your next trip.
Cheapest Round Trip Flight
$1010
Delta Airlines
• 1 stop
• 22h 14m
Mar 18 – May 12
The cheapest round trip flight from St Louis to London (STL-LHR-STL) is currently $1010
Fastest Flight
18h 45m
The fastest nonstop flight from St Louis to London (STL-LHR) takes 18h 45m
Top Airlines Flying from St Louis to London
Latest Flight Deals from St Louis (STL) to London (LHR)
Compare and book low fare round-trip air tickets from St Louis to London. Ideal for travelers with confirmed return itineraries.
Mar 18 - May 12, Economy
St Louis → London
22h 14m
11:51 AM - 6:25 AM • 1 stop
St Louis → London
22h 4m
1:25 PM - 8:49 PM • 1 stop
Delta Airlines
Mar 18 - May 12, Economy
St Louis → London
35h 35m
4:55 PM - 7:30 PM • 2 stops
St Louis → London
43h 25m
1:05 PM - 9:10 AM • 2 stops
Southwest Airlines
Mar 18 - May 12, Economy
St Louis → London
53h 40m
6:10 AM - 7:30 PM • 2 stops
St Louis → London
45h 15m
1:05 PM - 10:20 AM • 3 stops
Southwest Airlines
Mar 18 - May 12, Economy
St Louis → London
20h 51m
2:24 PM - 8:15 AM • 1 stop
St Louis → London
19h 5m
2:45 PM - 8:30 PM • 1 stop
American Airlines
Mar 18 - May 12, Economy
St Louis → London
48h 47m
7:23 AM - 5:50 PM • 2 stops
St Louis → London
27h 9m
1:25 PM - 11:54 PM • 2 stops
Aer Lingus
FAQs on St Louis to London Flights
What are the airports in St Louis?
STL
What’s the most popular airline flying from STL to LHR?
The most popular airline flying from St Louis to London are
Can I fly from STL to LHR non-stop?
NO
Which airlines fly nonstop between St Louis and London?
The non-stop flights between St Louis and London are .
What’s the earliest departure time from STL to LHR Airport?
The earliest flight leaves STL at 6:00 am and lands in LHR - London Heathrow
What are the airports in London?
LHR
Can I make changes to my St Louis to London flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from STL to LHR?
Read the fare rules of the St Louis to London air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from St Louis and London?
operate flights between St Louis and London
How long does a flight from St Louis to London take?
It takes approximately 9 hour to fly non-stop from STL to LHR, which is 4200.25 miles by air.
Which airlines provide the cheapest flights from St Louis (STL) to London (LHR) ?
In the past couple of days, the cheapest tickets to LHR from STL were found on EI : USD 1324
Do I need a passport to fly between STL and LHR?
Yes
What’s the latest departure time from STL to LHR ?
The last flight leaves STL at 4:55 pm
Essential Information for Booking Flights from St Louis (STL) - AI Insights
What's the cheapest airline from stl to lhr?
You can find budget-friendly flights from St. Louis to London Heathrow with airlines such as British Airways, American Airlines, or Delta Air Lines. For a round-trip economy ticket, you can expect to pay around $800-$1,200 per person, depending on the travel dates and availability. To secure the best fares, book at least 51 days in advance.
What's the popular airline to fly from stl to lhr?
You can fly from Lambert St Louis International Airport (STL) to London Heathrow Airport (LHR) with United Airlines. This is a popular airline option for round-trip flights from St Louis to London, with a layover at another airport. Book your flights in advance to secure the best airfares and enjoy a budget-friendly experience.
What's the cheapest day of the week to fly from stl to lhr?
The cheapest day to fly from St. Louis to London is typically on Saturdays, as it tends to have lower fares compared to other days of the week.
What's the cheapest month to fly from stl to lhr?
The cheapest month to fly from St. Louis to London is December, as it is typically the low season for air travel. You can expect to find budget-friendly flights during this time. For a round-trip journey with 5 passengers, consider booking in advance to secure the best airfares. Low fares and savings can be found with airlines offering flights from St. Louis Lambert International Airport to London Heathrow Airport.
Which airline/airlines fly from stl to lhr?
Several airlines operate flights from Lambert St Louis International Airport (STL) to London Heathrow Airport (LHR), including Austrian Airlines, United Airlines, Virgin Atlantic, Frontier Airlines, Southwest Airlines, Air Canada, Delta Airlines, KLM Airlines, Lufthansa Airlines, and Alaska Airlines. You can find the most up-to-date information on airfares and flight schedules for these airlines on their official websites or through a flight comparison platform like fareleaders.com. For budget-friendly flights, consider searching for airfares on websites like Skyscanner or Google Flights.
What is the cheapest airline to fly from Lambert St Louis International to London Heathrow?
United Airlines (UA)
How much in advance should I book my flights for a round trip to London Heathrow?
It is recommended to book flights at least 51 days in advance for the cheapest fares.
Can I book flights for multiple passengers at the same time?
Yes, you can book flights for multiple passengers at the same time on fareleaders.com.
What is the best way to compare airfares on fareleaders.com?
You can compare airfares by using our airfare comparison tool on fareleaders.com.
Can I book flights for a weekend getaway to London Heathrow?
Yes, you can book flights for a weekend getaway to London Heathrow on fareleaders.com.
How do I know if I have booked the cheapest airfare?
You can check the cheapest airfare by comparing prices on fareleaders.com.
Can I cancel or change my flight booking on fareleaders.com?
Yes, you can cancel or change your flight booking on fareleaders.com.
St Louis (STL) to London (LHR): Airport Information
| Origin Airport | Lambert St Louis International , St Louis, US |
| Destination Airport | London Heathrow , London, GB |
| Distance | 4200 miles |
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