Cheap Flights from London Stansted to St Louis

Compare London Stansted to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

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Flight deals from London Stansted to St Louis

Looking for a cheap last-minute deal or the best return flight from London Stansted to St Louis? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from London Stansted to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Stansted to St Louis flights are currently cheapest in December.

London Stansted to St Louis: Alternative routes

Compare routes from London Stansted to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

London to St Louis: Flight information

The things to know before you go.
Cheapest flight foundج.م.‏ 16,917
Cheapest month to flyDecember

Finding cheap flights from London Stansted to St Louis: Frequently asked questions

The best price we found for a return flight from London Stansted to St Louis is ج.م.‏ 40,433. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London Stansted to St Louis. But we found flights with one or more stops from ج.م.‏ 40,433.
As of September 2025, there are no flights flying from London Stansted to St Louis.
The cheapest month to fly from London Stansted to St Louis is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Stansted Airport to St Louis Airport on Wednesday, 15 October 2025.
No airlines currently offer direct flights between London Stansted Airport and St Louis Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Ryanair offers the cheapest flight tickets to St Louis.

Travelling from Stansted Airport (STN) to Lambert-St. Louis International Airport (STL): what you need to know

  • The timezone in St Louis is UTC-5, which is five hours behind London.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Be at the airport with enough time to catch your STN to STL flight.

  • Be prepared for bigger queues in popular months such as August. Arriving up to four hours in advance for international flights and two hours for domestic departures is a good idea.

How to find the cheapest flights from Stansted Airport (STN) to Lambert-St. Louis International Airport (STL)

  • The lowest price we've found for a one-way Stansted Airport to Lambert-St. Louis International Airport flight is ج.م.‏ 16,917. A return ticket is currently ج.م.‏ 40,433. Depending on the availability when you book, these fares could change.

  • It's a good idea to book as early as possible if you're hoping to get cheap tickets from STN to STL. That's because airlines change prices based on demand, which tends to rise closer to the date of departure.

  • If you're flexible with your trip dates, try using the 'Whole month' tool. It'll show you the cheapest price in every month when looking for a flight from Stansted Airport to Lambert-St. Louis International Airport.

  • Finding cheap flights from STN to STL is easy with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch as soon as fares go down.

  • Tailor your trip with filters. Choose your preferred departure and arrival times, airlines and total journey duration. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from Stansted Airport to Lambert-St. Louis International Airport.

Handy information about Stansted Airport (STN)

  • 64.73% of flights that depart Stansted Airport make it to their destination on schedule.

  • Stansted Airport is around 64 kilometres from central London. If you're catching a cab, ride-sharing or driving from the centre, it'll take 1 hour or so to arrive, depending on the traffic.

  • The journey when using public transport takes about 1 hour 25 minutes.

  • Get your break off to a hassle-free start by staying near STN. Whether you have an early flight from Stansted Airport to Lambert-St. Louis International Airport or just don't want to be rushed, these stays are the answer:

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • You'll find STL at 10701 Lambert International Blvd..

  • From Lambert-St. Louis International Airport, St Louis is approximately 26 kilometres away. It takes around 20 minutes to reach the centre driving.

  • It takes around 35 minutes to get there by public transport.

When to fly to Lambert-St. Louis International Airport (STL)

  • The quietest month for a flight from Stansted Airport to Lambert-St. Louis International Airport is April, while July is the most popular. Pick the ideal time to visit St Louis based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • The warmest month in St Louis is July, with the temperature ranging between 17ºC and 33ºC. Lock in your flights from Stansted Airport to Lambert-St. Louis International Airport in this month if this is the type of weather you like.

  • For cooler conditions, look for a cheap ticket from STN to STL in January. Average temperatures are between -8ºC and 7ºC then.

Explore more of United States

  • Chicago is just one of the many places in United States waiting to be explored after you've experienced St Louis. Around 418 kilometres away to the north-east, its best attractions include Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • Indianapolis is another must-experience destination in United States and is around 370 kilometres east of St Louis. No trip is complete without seeing The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.