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Flight tickets from St Louis to London

Aer Lingus
American Airlines
Finnair
Iberia
British Airways

Compare St Louis to London flight deals

Find the cheapest month or even day of the year to fly to London

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Flight deals from St Louis to London

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to London? If you want to travel next month, return fares start from ₹ 79,211. Find the lowest prices on one-way and return tickets right here.
London.₹ 30,938 per passenger.Departing Sun, 11 Apr.One-way flight with Air France.Outbound indirect flight with Air France, departs from St Louis on Sun, 11 Apr, arriving in London Heathrow.Price includes taxes and charges.From ₹ 30,938, select.
London.₹ 30,974 per passenger.Departing Tue, 27 Jul.One-way flight with British Airways.Outbound direct flight with British Airways departs from St Louis on Tue, 27 Jul, arriving in London Heathrow.Price includes taxes and charges.From ₹ 30,974, select.
London.₹ 30,986 per passenger.Departing Sun, 2 May.One-way flight with British Airways.Outbound direct flight with British Airways departs from St Louis on Sun, 2 May, arriving in London Heathrow.Price includes taxes and charges.From ₹ 30,986, select.
London.₹ 31,018 per passenger.Departing Mon, 23 Nov.One-way flight with Air France.Outbound indirect flight with Air France, departs from St Louis on Mon, 23 Nov, arriving in London Heathrow.Price includes taxes and charges.From ₹ 31,018, select.
London.₹ 31,036 per passenger.Departing Tue, 1 Dec.One-way flight with United.Outbound indirect flight with United, departs from St Louis on Tue, 1 Dec, arriving in London Heathrow.Price includes taxes and charges.From ₹ 31,036, select.
London.₹ 31,036 per passenger.Departing Sun, 21 Feb.One-way flight with United.Outbound indirect flight with United, departs from St Louis on Sun, 21 Feb, arriving in London Heathrow.Price includes taxes and charges.From ₹ 31,036, select.
London.₹ 31,121 per passenger.Departing Sun, 17 Jan.One-way flight with United.Outbound indirect flight with United, departs from St Louis on Sun, 17 Jan, arriving in London Heathrow.Price includes taxes and charges.From ₹ 31,121, select.
London.₹ 31,253 per passenger.Departing Sun, 11 Apr.One-way flight with Iberia.Outbound direct flight with Iberia departs from St Louis on Sun, 11 Apr, arriving in London Heathrow.Price includes taxes and charges.From ₹ 31,253, select.
London.₹ 31,366 per passenger.Departing Mon, 29 Mar.One-way flight with Air France.Outbound indirect flight with Air France, departs from St Louis on Mon, 29 Mar, arriving in London Heathrow.Price includes taxes and charges.From ₹ 31,366, select.
London.₹ 33,241 per passenger.Departing Mon, 14 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Mon, 14 Sep, arriving in London Gatwick.Price includes taxes and charges.From ₹ 33,241, select.
London.₹ 53,720 per passenger.Departing Mon, 24 Aug.One-way flight with Condor.Outbound indirect flight with Condor, departs from St Louis on Mon, 24 Aug, arriving in London Gatwick.Price includes taxes and charges.From ₹ 53,720, select.
London.₹ 54,064 per passenger.Departing Wed, 7 Oct.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from St Louis on Wed, 7 Oct, arriving in London Gatwick.Price includes taxes and charges.From ₹ 54,064, select.
London.₹ 54,398 per passenger.Departing Tue, 1 Jun.One-way flight with British Airways.Outbound direct flight with British Airways departs from St Louis on Tue, 1 Jun, arriving in London Heathrow.Price includes taxes and charges.From ₹ 54,398, select.
London.₹ 70,989 per passenger.Departing Sun, 30 Aug.One-way flight with British Airways.Outbound direct flight with British Airways departs from St Louis on Sun, 30 Aug, arriving in London Heathrow.Price includes taxes and charges.From ₹ 70,989, select.
London.₹ 86,477 per passenger.Departing Sun, 6 Sep.One-way flight with British Airways.Outbound direct flight with British Airways departs from St Louis on Sun, 6 Sep, arriving in London Heathrow.Price includes taxes and charges.From ₹ 86,477, select.
London.₹ 86,508 per passenger.Departing Wed, 7 Oct.One-way flight with Iberia.Outbound direct flight with Iberia departs from St Louis on Wed, 7 Oct, arriving in London Heathrow.Price includes taxes and charges.From ₹ 86,508, select.

Find the cheapest month to fly from St Louis to London

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to London flights are currently cheapest in April.
Aug
from ₹ 53,720
Sep
from ₹ 33,241
Oct
from ₹ 54,064
Nov
from ₹ 31,018
Dec
from ₹ 31,036
Jan
from ₹ 31,121
Feb
from ₹ 31,036
Mar
from ₹ 31,366
Apr
from ₹ 30,938
May
from ₹ 30,986
Jun
from ₹ 54,398
Jul
from ₹ 30,974

Direct flights from St Louis to London

Aer Lingus
American Airlines
British Airways
Finnair
Iberia

Alternative St Louis to London routes

Looking for the cheapest, fastest or easiest route from St Louis to London? You could fly into the following airports instead.

London City

12km from central London
Closest
from ₹ 32,951
Search flights

London Heathrow

23km from central London
Cheapest
from ₹ 30,938
Search flights

London Gatwick

40km from central London
from ₹ 31,808
Search flights

London Luton

45km from central London
from ₹ 39,626
Search flights

London Stansted

49km from central London
from ₹ 39,743
Search flights

London Southend

57km from central London
from ₹ 49,949
Search flights

St Louis to London: Flight information

The things to know before you go.
Cheapest flight found₹ 30,938
Cheapest month to flyApril
Average flight time8 hrs
Most popular airlineAer Lingus
Average flights per week17

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

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.
The best price we found for a return flight from St Louis to London is ₹ 70,859. 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.
8 hours is the average flight time from St Louis to London.
Aer Lingus, American Airlines and Finnair fly direct from St Louis to London.
As of August 2026, there are 17 flights per week flying from St Louis to London.
The cheapest month to fly from St Louis to London is usually November.
If you're flying from St Louis Airport, the cheapest airport near London is London Heathrow – which is 22.9 km away from the centre of London. We've found flights into this airport from ₹ 70,859.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to London on Wednesday, 11 November 2026.
Yes – the average flight time is 8 hours.
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 London 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 London is around 40 days in advance, so don’t leave your flight to the last minute.

In August, the average temperature is usually around 17°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.
Currently, Air Canada and British Airways offer the cheapest flight tickets to London.

Travelling from St Louis Lambert International Airport (STL) to London: what you need to know

  • Hop on a direct flight from St Louis Lambert International Airport to London and you'll be in the air for around 9 hours 5 minutes.

  • St Louis Lambert International Airport is located in St Louis. Following the UTC+0 timezone, London is six hours ahead of St Louis.

  • The busiest flight route is from St Louis Lambert International Airport (STL) to London Heathrow Airport (LHR). You can choose from two services between these airports each week.

  • For a relaxed start to your STL to London flight, allow plenty of time for things like check-in and baggage drop. Turning up two hours before international departures and an hour before domestic flights is the general travel rule.

  • Flying during a popular month such as July? Public holidays and other high seasons can lead to longer queues and delays at check-in and security. Play it safe and get there up to four hours ahead of an international flight and two hours before domestic departures.

  • Start your trip at STL and fly straight to London Heathrow Airport (LHR). That will be your arrival point when searching for St Louis Lambert International Airport to London tickets.

  • Keep your eyes peeled for promotions from British Airways. This carrier operates direct flights from St Louis Lambert International Airport to London.

  • We make it easy to book plane tickets from STL to London with a stopover. To see your options, deselect 'Direct flights only.' Then, select a flight with a stop long enough to see the sights of your chosen city. The most sought-after stopovers include:

    • Chicago O'Hare International Airport (ORD)

    • Frankfurt Airport (FRA)

    • Boston Logan International Airport (BOS)

  • Located around 16 kilometres from central St Louis, STL can be reached in about 25 minutes by car, depending on traffic. The journey on public transport will take roughly 30 minutes.

  • Have an early flight from St Louis Lambert International Airport to London? Avoid the hassle of rushing to the airport (and catch some extra z's) by choosing one of these stays close to STL:

  • When it comes to the on-time performance of St Louis Lambert International Airport, 76% of flights stick to their scheduled arrival time.

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

How to find the cheapest flights from St Louis Lambert International Airport (STL) to London

  • ₹ 30,938 is currently the lowest price for a one-way St Louis Lambert International Airport to London flight. Return plane tickets start at ₹ 70,859. These prices may change based on availability.

  • To find cheap flights from STL to London, book as early as possible. Airlines generally offer their most competitively priced fares when tickets are first released.

  • Finding cheap tickets from St Louis Lambert International Airport to London is easier if you can be flexible with your travel dates. Try using the 'Whole month' search tool to get the lowest prices across every month and score an incredible deal.

  • You don't need to keep looking every day to find out if fares have dropped when you create a Price Alert. We'll update you the moment there's an even bigger deal on cheap flights from STL to London.

  • Find an affordable flight from St Louis Lambert International Airport to London with the help of our filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in London

London Heathrow Airport (LHR)

  • London Heathrow Airport (LHR) is around 24 kilometres from the centre of London. If you're getting a taxi or a ride-share, the drive will take roughly 45 minutes.

  • Travelling by public transport will take you around 25 minutes.

  • Consider booking a hotel near LHR if you have a late flight from St Louis Lambert International Airport to London. Check in to one of these accommodation options and make arrival day easier:

  • For the best deal, reserve your ride from London Heathrow Airport around one week in advance of your flight from STL to London.

London Gatwick Airport (LGW)

  • The centre of London is around 48 kilometres from London Gatwick Airport (LGW). Once your flight from St Louis Lambert International Airport to London has touched down and you've navigated your way to arrivals, the drive should take about 1 hour 5 minutes.

  • The journey will take roughly 1 hour 20 minutes on public transport.

  • Following your STL to London flight, unwind at a hotel near LGW. These are some great options that'll help you get into relaxation mode:

  • Secure your first choice, not your last resort. Securing your ride from LGW three weeks ahead of time often means better deals and a greater selection of vehicles.

London Stansted Airport (STN)

  • Make tracks for the city centre after your flight from St Louis Lambert International Airport to London has touched down. Central London is around 56 kilometres from London Stansted Airport (STN) and takes roughly 1 hour 5 minutes to get to by car.

  • Public transport can take you there in around 45 minutes.

  • Enjoy a more relaxed start to your trip by choosing a hotel near STN after your STL to London flight. Recharge after a day of travel or simply take a moment to get your footing in a new city at:

  • About four weeks ahead of your flight from St Louis Lambert International Airport to London is the ideal time to secure your ride from STN. You're likely to find a better rate or even pick up some early bird discounts.

Best time to go to London

  • It's time to work out your travel dates for your flight from St Louis Lambert International Airport to London. July is the busiest month for a trip to London. If you like a more peaceful vibe, go in January.

  • When booking your St Louis Lambert International Airport to London plane ticket, think about what kind of weather you prefer. July is the warmest month in London, with temperatures ranging from 11ºC to 26ºC.

  • January has average temperatures of between 0ºC and 9ºC. Look for a cheap ticket from STL to London around that time if you'd rather travel in cooler conditions.

More about London

  • Once you've booked your flight from St Louis Lambert International Airport to London, choose a hotel that puts you right where the action is. Make one of these accommodation options your base for exploring London:

  • Westminster Abbey and The British Museum are just a couple of the popular attractions to put on your London must-do list. Keep the sightseeing going at Big Ben.

Explore more of the United Kingdom

  • You've seen London, now it's time to explore other corners of the United Kingdom. Journey about 257 kilometres northwest to Manchester to tick off its top attractions. From Manchester United Museum & Stadium Tour to The Homes of Football and Museum of Science and Industry, you'll have a packed itinerary ahead.

  • If there's time to check out another corner of the United Kingdom, head for Birmingham, about 161 kilometres northwest of London. Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience are among its highlights.

Plan the rest of your trip from St Louis to London

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.