Q: What is the typical price of a round-trip flight between London and St. Louis?

Prices are currently low for flights on this route. Typical prices usually range from £751 to £625. The lowest price recently found on this route was £630.

Question 1

How far in advance should I book a flight from London to St. Louis?

Accepted Answer

You are more likely to see cheaper flights to St. Louis from London when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around £733 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from London for as low as £644 on momondo.

Question 2

How many flights depart from London to St. Louis on average per day?

Accepted Answer

2 flights are operational daily from London to St. Louis as of April 2026. The most popular departure time for this route is 16:00, with 100% of flights per day taking off in the afternoon.

Question 3

Which stopover airport offers the lowest fares from London to St. Louis?

Accepted Answer

Flights via Toronto (YYZ) offer the lowest average return price of £609.

Question 4

Which stopover airport has the shortest travel time from London to St. Louis?

Accepted Answer

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 11h 32m.

Question 5

Which airlines fly to St. Louis?

Accepted Answer

British Airways, Lufthansa and United Airlines are the top three most popular airlines that fly to St. Louis from London according to our data. British Airways is the first choice among our users, with 45% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 10 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

Question 6

What is the cheapest airline that flies from London to Lambert-St Louis?

Accepted Answer

Finnair, Delta, and Lufthansa are the most popular carriers operating from London to Lambert-St Louis

Question 7

What is the typical price of a round-trip flight between London and St. Louis?

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from £751 to £625.
The lowest price recently found on this route was £630.

Question 8

Can stopping save me money on London to St. Louis flights?

Accepted Answer

You could potentially save up to 26% on your flight if you consider stops on a London to St. Louis flight.

Question 9

What is the cheapest London to Lambert-St Louis flight route?

Accepted Answer

Fly from London Heathrow to Lambert-St Louis for the best London - Lambert-St Louis flight prices

Question 10

Which stopover airport has the shortest connection time from London to St. Louis?

Accepted Answer

Charlotte (CLT) has the shortest average stopover time for this route: 1h 30m.

Question 11

Which airport is the most popular for stopovers for flights between London and St. Louis?

Accepted Answer

Chicago (ORD) was the most common stop: 35% of momondo users choosing one-stop flights on this route connected there.

Question 12

How many flights depart from London to St. Louis on average per week?

Accepted Answer

As of April 2026, 20 flights take off from London and land in St. Louis each week. The most common flight departure day for this route is Tue, with 25% of weekly flights taking off on this day.

Question 13

How have London to St. Louis flight prices changed over time?

Accepted Answer

As of April 2026, prices for London to St. Louis flights are approximately 33% cheaper when compared to flights at the same time last year.

Question 14

What is the cheapest month to fly to St. Louis?

Accepted Answer

The month of August is, on average, the cheapest month to fly to St. Louis from London, with most prices found around £85. If you’re not able to fly to St. Louis in August, then September is your next best option. Flight prices from London to St. Louis during September average around £126.

Question 15

What is the cheapest day to depart on your flight to St. Louis?

Accepted Answer

Our data shows that Saturday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as £591. Flights from London to St. Louis on a Sunday will generally be more expensive and average around £758. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Question 16

What are the benefits of the different airports in London and St Louis?

Accepted Answer

While there are other efficient airports in London, most London to St Louis flights depart from London Heathrow Airport (LHR). London Heathrow Airport (LHR) terminals are numerous and a substantial distance apart, so plan ahead so that you arrive on time. Enjoy excellent hospitality in the restaurants, lounges or cafes spread throughout the airport. Children can have fun at the play areas in Terminals 2, 3, 4, and 5. There are also numerous charging ports where you can work and boost your devices before departure. Lambert-St Louis Airport (STL) has an interfaith chapel at both terminals. Enjoy great food, snacks, and drinks at the Wingtips and USO Lounges. The airport also offers cash machines and Banking services, duty-free shops, disability services, baby-feeding suites, eateries, massage centres, animal rest areas, medical services, and device charging ports. Remember that both airports have a no smoking policy.

Question 17

What is the best way to get in and out of airports in London and St Louis?

Accepted Answer

Among the three most popular airports in London, the London Heathrow Airport (LHR) is the busiest. All London airports are connected to the airport terminals by train. If you depart from London Heathrow Airport (LHR), you can also use the bus, coach, or taxi. The Tube is one of the cheapest options, as it serves all terminals at London Heathrow Airport (LHR). For those who live in London’s outskirts, the bus will conveniently get you to Terminals 2 and 3. The TfL Rail and the Heathrow Express are the two primary train operators serving the London Heathrow Airport (LHR). The TfL Rail accesses all Terminals, while Heathrow Express serves Terminals 4 and 5. In St Louis, you will land at Lambert-St Louis Airport (STL). You can get to and from Lambert-St Louis Airport (STL) by bus, taxi, train, or car hire. Public buses are operated by the Greyhound Bus Service and MetroBus service. Buses operate regularly from Terminals 1 and 2 and take about 30min to get to the city centre. Taxis at Terminals 1 and 2 are the quickest way to get to and from the airport, taking about 20min. The MetroLink leaves the airport approximately every 10 to 30min, taking approximately 33min to get to the city centre, and operates from early morning to midnight.

Which cities can you get to from St Louis?

Flights from London to St Louis land at Lambert-St Louis Airport (STL). Passengers can then travel to the city centre by taxi, bus, or train. Some cities near St. Louis include Chesterfield, Wildwood, and Ellisville. You can travel to these cities by car, taxi, bus, or train. Taking a bus is one of the easiest, cheapest, and most popular ways to travel between the cities, taking one to a few hours. You can also use car hire services to travel around the country in your own time.

Question 18

Which airlines fly direct from London to St Louis?

Accepted Answer

Unfortunately, no airlines offer direct flights from London to St Louis. The fastest flight from London to St. Louis takes approximately 13h 14min depending on flying conditions and air traffic around both airports. Airlines offering one-way flights from London to St Louis with one or two stopovers are Aer Lingus and Air Canada. Finnair and Delta Airlines offer the cheapest flights, while United Airlines and Air France offer the quickest flights from London to St Louis. Enjoy cheap flights from London to St Louis by booking your flight 56 days to take off. Some airlines that may not charge you when you cancel your flight if you provide a valid reason are Finnair, United Airlines, and American Airlines. Passengers can choose to fly from London City Airport (LCY), London Heathrow Airport (LHR) or London Gatwick Airport (LGW) to Lambert-St Louis Airport (STL).

Question 19

When did momondo last update prices for flights from London to Lambert-St Louis Airport?

Accepted Answer

Prices for flights from London to Lambert-St Louis Airport are updated daily.

Question 20

How many operators does momondo search for flights from London to Lambert-St Louis Airport?

Accepted Answer

As of April 2026, there are 10 operators available to choose from for flights from London to Lambert-St Louis Airport.

Question 21

How old do you have to be to fly from London to Lambert-St Louis Airport?

Accepted Answer

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Lambert-St Louis Airport.

Question 22

What documentation or ID do you need to fly to Lambert-St Louis Airport?

Accepted Answer

The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best price found	£646
Fastest flight time	9h 05m
Direct flights	Mon, Wed, Thu and Sat
Airports in St. Louis	1 airport

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom £172	Free Cancellation	Rating 7.1 11,681 reviews	Search American Airlines flights
United Airlines	PriceFrom £469	Free Cancellation	Rating 7.4 9,677 reviews	Search United Airlines flights
British Airways	PriceFrom £475	Free Cancellation	Rating 6.7 7,937 reviews	Search British Airways flights
KLM	PriceFrom £516	Free Cancellation	Rating 7.8 1,512 reviews	Search KLM flights
Virgin Atlantic	PriceFrom £551	Free Cancellation	Rating 7.4 688 reviews	Search Virgin Atlantic flights
Finnair	PriceFrom £582	Free Cancellation	Rating 7.6 1,392 reviews	Search Finnair flights
Scandinavian Airlines	PriceFrom £591	Free Cancellation	Rating 7.4 1,767 reviews	Search Scandinavian Airlines flights
Air Canada	PriceFrom £598	Free Cancellation	Rating 7.1 10,982 reviews	Search Air Canada flights
Lufthansa	PriceFrom £648	Free Cancellation	Rating 6.8 7,962 reviews	Search Lufthansa flights
Iberia	PriceFrom £652	Free Cancellation	Rating 7.0 3,204 reviews	Search Iberia flights

Cheap flights from London to St. Louis from £337

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to St. Louis departing on 30/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from London to St. Louis

What is the typical price of a round-trip flight between London and St. Louis?

What is the cheapest month to fly to St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest London to Lambert-St Louis flight route?

How far in advance should I book a flight from London to St. Louis?

Can stopping save me money on London to St. Louis flights?

How have London to St. Louis flight prices changed over time?

What is the cheapest airline that flies from London to Lambert-St Louis?

Which airlines fly to St. Louis?

Which airport is the most popular for stopovers for flights between London and St. Louis?

Which stopover airport offers the lowest fares from London to St. Louis?

Which stopover airport has the shortest travel time from London to St. Louis?

Which stopover airport has the shortest connection time from London to St. Louis?

How many flights depart from London to St. Louis on average per day?

How many flights depart from London to St. Louis on average per week?

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