Cheap Flights from London to St Louis

Your route at a glance

Cheapest monthJanuary

Average flight duration9 hours and 5 minutes

Flight deals from London to St Louis

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

St Louis.Rs90,540 per passenger.Departing Fri, 23 Jan.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Fri, 23 Jan, arriving in St Louis.Price includes taxes and charges.From Rs90,540, select.

St Louis.Rs125,208 per passenger.Departing Sun, 22 Mar.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Sun, 22 Mar, arriving in St Louis.Price includes taxes and charges.From Rs125,208, select.

St Louis.Rs131,485 per passenger.Departing Mon, 9 Feb.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from London Heathrow on Mon, 9 Feb, arriving in St Louis.Price includes taxes and charges.From Rs131,485, select.

St Louis.Rs135,047 per passenger.Departing Wed, 6 May.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from London Heathrow on Wed, 6 May, arriving in St Louis.Price includes taxes and charges.From Rs135,047, select.

St Louis.Rs135,511 per passenger.Departing Wed, 22 Apr.One-way flight with Finnair.Outbound direct flight with Finnair departs from London Heathrow on Wed, 22 Apr, arriving in St Louis.Price includes taxes and charges.From Rs135,511, select.

St Louis.Rs135,511 per passenger.Departing Wed, 6 May.One-way flight with Finnair.Outbound direct flight with Finnair departs from London Heathrow on Wed, 6 May, arriving in St Louis.Price includes taxes and charges.From Rs135,511, select.

St Louis.Rs136,087 per passenger.Departing Tue, 8 Sep.One-way flight with Finnair.Outbound direct flight with Finnair departs from London Heathrow on Tue, 8 Sep, arriving in St Louis.Price includes taxes and charges.From Rs136,087, select.

St Louis.Rs166,578 per passenger.Departing Fri, 19 Jun.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Stansted on Fri, 19 Jun, arriving in St Louis.Price includes taxes and charges.From Rs166,578, select.

Find the cheapest month to fly from London to St Louis

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

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Direct flights from London to St Louis

London to St Louis: Alternative routes

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

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

How much are return flights from London to St Louis?

The best price we found for a return flight from London to St Louis is Rs139,214. 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.

How long does it take to fly from London to St Louis?

9 hours and 5 minutes is the average flight time from London to St Louis.

Which airlines fly direct from London to St Louis?

Aer Lingus, American Airlines and Finnair fly direct from London to St Louis.

How many flights are there a week from London to St Louis?

As of December 2025, there are 20 flights per week flying from London to St Louis.

When is the cheapest time to fly from London to St Louis?

The cheapest month to fly from London to St Louis is usually January.

Which upcoming date is cheapest to fly from London to St Louis Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to St Louis Airport on Thursday, 22 January 2026.

Can I get a direct flight from London to St Louis Airport?

Yes – the average flight time is 9 hours and 5 minutes.

How can I find the best flight deal to St Louis?

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.

When is the best time to book flights to St Louis?

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.

Flying from London to Lambert-St. Louis International Airport (STL): What you need to know

London has numerous airports to start your journey from. Check out your departure options from London Heathrow Airport (LHR) and London Gatwick Airport (LGW) when organising your flight from London to Lambert-St. Louis International Airport (STL). Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY) are the city's other major bases.
St Louis is five hours behind London. Lambert-St. Louis International Airport is located in St Louis, which is in the UTC-5 timezone.
To ensure you get on your flight from London to STL, leave plenty of time for things like check-in and baggage drop. Arriving two hours ahead of international departures and one hour before domestic flights is the standard rule.
If you're taking off during a major holiday or other peak period, give yourself extra time. Arrive two hours before domestic flights and up to four hours before international departures. Queues at check-in and security will be longer.

Airports in London

London Heathrow Airport (LHR)

Consider adding a stopover to find cheap flights from London to STL. Simply uncheck 'Direct flights only' when searching for departures from London Heathrow Airport (LHR). Pause your trip (and maybe pocket some savings) with a stop at one of these popular options:
- O'Hare International Airport (ORD)
- Detroit Metropolitan Wayne County Airport (DTW)
- Montreal-Pierre Elliott Trudeau International Airport (YUL)
Located around 31 kilometres from central London, LHR can be reached in about 55 minutes by car (depending on traffic). The journey on public transport will take roughly 1 hour.
Looking for a comfortable hotel near London Heathrow Airport? If you're catching an early flight from London to Lambert-St. Louis International Airport, these accommodation options will put you conveniently close to check-in:
When it comes to the on-time performance of London Heathrow Airport, 68.18% of flights arrive within the scheduled time frame.

London Gatwick Airport (LGW)

Add a little extra to your holiday with a stopover on your flight from London to Lambert-St. Louis International Airport. Here's where you can connect between London Gatwick Airport and STL:
- Pearson International Airport (YYZ)
- Orlando International Airport (MCO)
- Cancun International Airport (CUN)
You can reach LGW from the centre of London in about 1 hour 20 minutes by car (depending on traffic). The journey by public transport will take roughly 30 minutes to travel the 80 kilometres or so.
Start your holiday sooner with an additional night away from home. Before your London to STL flight, stay in one of these hotels close to London Gatwick Airport:
When it comes to flights staying on schedule, London Gatwick Airport has an on-time arrival performance of 69.26%.

Stansted Airport (STN)

From the centre of London, STN is around 64 kilometres away. It takes roughly 1 hour to reach the airport by car and 1 hour 25 minutes or so if you take public transport.
Relax in bed for a little longer and still make your London to Lambert-St. Louis International Airport flight without having to rush. These hotels near Stansted Airport make it a breeze to get to the terminal if you're jetting off early:
The on-time performance rate of STN is 64.73%. To put it simply, that's how often flights that depart this airport reach their final stop as planned.

About Lambert-St. Louis International Airport (STL)

If you have a late flight from London to Lambert-St. Louis International Airport, nothing tops the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and resting soon after at one of these hotels near STL:
Grab a Lambert-St. Louis International Airport rental car and discover St Louis and beyond with your own wheels. Hertz, Budget and Alamo are popular providers to choose from here.
For the best deal, reserve your vehicle around one week ahead of your London to Lambert-St. Louis International Airport flight.
You'll find STL at 10701 Lambert International Blvd..

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

Lambert-St. Louis International Airport is roughly 16 kilometres from central St Louis. How long it'll take to get there by cab or car hire depends on the time of day. Do some research before you go.
Travelling by public transport takes around 35 minutes.

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

Rs90,540 is currently the lowest price for a one-way ticket from London to Lambert-St. Louis International Airport. A return flight starts from Rs139,214. These fares can change depending on availability and demand.
Booking in advance is often the key to scoring a cheap flight from London to STL. Fares tend to rise as demand increases, so the closer you get to departure, the more you'll likely pay.
The 'Whole month' tool shows you the cheapest London to Lambert-St. Louis International Airport tickets across the month. It's a great way to find a bargain if your dates aren't set in stone.
Save time looking for cheap flight tickets from London to STL by creating a Price Alert. We'll send you an email or push notification on the app when fares go down.
Filters make it easier to scoop up a deal on your flight from London to Lambert-St. Louis International Airport. Choose the airlines, flight times and number of stops that line up with your plans. Then sort the results by 'Cheapest' to find the most affordable option fast.

The best time to fly from London to Lambert-St. Louis International Airport (STL)

July is when most people book flights from London to Lambert-St. Louis International Airport (STL). Plan your visit to St Louis in April if you'd rather be there when it's quieter.
The warmest month in St Louis is July, with temperatures ranging between 17ºC and 33ºC. Book your London to STL flight ticket then if that's your idea of comfortable weather.
If you like travelling in cooler conditions, search for a cheap ticket from London to Lambert-St. Louis International Airport in January when temperatures are between -8ºC and 7ºC.

More about St Louis

When it comes to searching for somewhere to lay your head, you'll find the most popular stays in St Louis right here. Browse these options after locking in your flight from London to Lambert-St. Louis International Airport:
There are loads of fantastic things to do in St Louis when you're ready to see the sights. Make your way to The Gateway Arch followed by Saint Louis Arch and Museum at the Gateway Arch.

Explore more of the United States

Evansville is just one of the many places in the United States waiting to be discovered once you've seen the sights of St Louis. Around 257 kilometres away to the east, top sights here include Mesker Park Zoo, Riverfront Park and Evansville Zoological Society.
Columbia is another must-experience destination in the United States and is around 177 kilometres west of St Louis. No journey is complete without dropping by Sentinel Park, Museum of Art and Archaeology and Bur Oak Brewing Company.