£271+ Cheap flights to St. Louis

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/5. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
8 Jun — 15 Jun1
1 adult
1 adult, Economy, 0 bags

Flights to St. Louis in 2026

Enter your travel dates to find the best prices.

Cheapest flights to St. Louis
Explore the most affordable flight options available to St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 9 May 2026.

Wed 2/909:45
LHR
-
STL
1 stop12h 39m
British Airways
Wed 23/911:18
STL
-
LHR
1 stop13h 32m
British Airways
Deal found 5/5£629
Wed 2/911:45
LHR
-
STL
2 stops17h 52m
KLM
Wed 23/919:05
STL
-
LHR
1 stop12h 10m
KLM
Deal found 8/5£630
Wed 2/911:15
LHR
-
STL
1 stop12h 47m
Virgin Atlantic
Wed 23/913:30
STL
-
LHR
1 stop11h 45m
Virgin Atlantic
Deal found 4/5£634
Wed 2/908:40
LHR
-
STL
2 stops16h 02m
Multiple Airlines
Wed 23/912:47
STL
-
LHR
1 stop12h 08m
Multiple Airlines
Deal found 6/5£637
Mon 28/918:10
LHR
-
STL
2 stops35h 10m
Finnair
Sun 4/1016:29
STL
-
LHR
1 stop33h 11m
Finnair
Deal found 5/5£637
Mon 8/614:00
LGW
-
STL
2 stops48h 47m
Multiple Airlines
Mon 22/616:17
STL
-
LGW
1 stop35h 43m
Multiple Airlines
Deal found 7/5£640
Thu 25/614:00
LGW
-
STL
1 stop15h 49m
Multiple Airlines
Thu 9/716:09
STL
-
LGW
1 stop35h 51m
Multiple Airlines
Deal found 4/5£641
Wed 2/906:30
LHR
-
STL
1 stop12h 55m
Multiple Airlines
Wed 9/913:30
STL
-
LHR
2 stops15h 10m
Multiple Airlines
Deal found 8/5£642
Tue 22/916:25
LHR
-
STL
Nonstop9h 05m
British Airways
Tue 6/1016:51
STL
-
LHR
1 stop13h 19m
British Airways
Deal found 7/5£642
Tue 22/916:25
LHR
-
STL
Nonstop9h 05m
American Airlines
Tue 6/1021:35
STL
-
LHR
Nonstop8h 00m
American Airlines
Deal found 5/5£643
Wed 27/514:00
LGW
-
STL
2 stops33h 33m
Multiple Airlines
Wed 17/616:17
STL
-
LGW
1 stop35h 43m
Multiple Airlines
Deal found 6/5£657
Tue 9/614:00
LGW
-
STL
1 stop15h 49m
Multiple Airlines
Sun 21/616:17
STL
-
LGW
1 stop35h 43m
Multiple Airlines
Deal found 5/5£667

Find flight deals to St. Louis

Find the latest flights to St. Louis in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 9 May 2026.

Return from

£629

One-way from

£271

Popular in

July

Cheapest in

February

Average price

£670

Good round-trip deal

£798 or less
British Airways
  • British Airways
  • 2/9-23/9
  • 2 total stops
  • 26h 11m total
  • London to St. Louis
28/5
  • 28/5
  • 1 total stop
  • 15h 57m total
  • London to St. Louis
Highest demand for flights based on searches. 11% potential increase in price (£93 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£14 potential savings vs. average return price).
Average for return flights in May 2026
Price to beat on a round-trip flight from London to Lambert-St Louis.

Cheapflights Fare Finder

 
Locate flights to St. Louis that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 9 May 2026.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 2/9

09:55-20:31

2 stops16h 36m

Lambert-St Louis

Wed 23/9

10:45-06:45

2 stops14h 00m

£649

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 5/6

14:00-23:57

1 stop15h 57m

Lambert-St Louis

Sun 21/6

18:31-10:00

2 stops33h 29m

£677

LondonSt. Louis

LCY - STL

LCYSTL

London City

Mon 7/9

10:00-20:50

2 stops16h 50m

Lambert-St Louis

Fri 11/9

15:42-11:40

2 stops13h 58m

£711

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Sun 6/9

10:25-23:01

2 stops18h 36m

Lambert-St Louis

Fri 11/9

16:13-16:00

2 stops17h 47m

£728

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 9/6

19:55-13:25

2 stops23h 30m

Lambert-St Louis

Sun 21/6

14:15-14:35

3 stops18h 20m

£733
Fastest return journey

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 8/6

09:15-17:19

1 stop14h 04m

Lambert-St Louis

Mon 22/6

18:13-12:10

1 stop11h 57m

£768

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 17/6

06:30-15:17

2 stops14h 47m

Lambert-St Louis

Tue 23/6

17:36-13:05

1 stop13h 29m

£769

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 16/6

15:15-23:56

1 stop14h 41m

Lambert-St Louis

Tue 23/6

15:57-13:05

1 stop15h 08m

£783

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Mon 8/6

10:25-20:39

2 stops16h 14m

Lambert-St Louis

Mon 22/6

11:18-09:40

2 stops16h 22m

£785

LondonSt. Louis

LCY - STL

LCYSTL

London City

Tue 16/6

10:00-20:39

2 stops16h 39m

Lambert-St Louis

Tue 23/6

10:20-07:55

2 stops15h 35m

£798

Flights are sorted by cheapest return flights first.

Deals found on 5/5

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to St. Louis

When is the best time to book a flight to St. Louis?

Booking 46 days in advance of your planned departure date is, on average, the best time to get cheap flights to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

How long is the flight to St. Louis?

On average, a flight from London to St. Louis takes 14 hours 16 minutes. Flights to St. Louis from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the cheapest airlines that fly to St. Louis?

The cheapest airlines flying from London to St. Louis are American Airlines, Aer Lingus and United Airlines.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 inches per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated 9 May 2026.
Read through reviews of airlines serving the United States, such as Finnair,United Airlines, andVirgin Atlantic. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

6.7

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

Comfort

7.4

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

Food

6.7

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

Comfort

7.4

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

Food

6.7

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

Comfort

7.4

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

Food

6.7

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

Comfort

7.4

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

Food

6.7

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

Comfort

7.4

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

Food

6.7

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

Comfort

7.4

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

FAQs about flying to St. Louis

St. Louis climate

St Louis has moderate, seasonal weather, but storms can occur at any time of the year. July and August are the hottest and most humid months of the year, and January and February are cold, usually with snow. Winter temperatures range from below 0 to 13 degrees C, while summers have daily temperatures of between 14 to 32 degrees C.

Getting around St. Louis

The local transport connects the central regions and is a great way to travel throughout the city. It’s possible to access the majority of St. Louis tourist attractions via the public transport, so a car isn’t necessary. There are shuttle buses that will transport travellers from some attractions to the nearest station. Travellers can pick up a shuttle service map at any of the stations, or at first attraction. Bus services are part of the same network, but extend throughout St. Louis counties.

Renting a car is also an option. St. Louis is a very easy city to navigate and parking is abundant throughout the city. However, if you plan to drive to the suburbs, the navigation might become a little tricky. Make sure to check with your hotel or a local before hitting the motorway in your rental car.

Taxi stands are located at most major hotels around the city and at common tourist attractions. Cabs can also be reserved ahead of time.

Getting from the Airport to the City

Lambert–St. Louis International Airport (STL) is located around 10 miles (16 km) northwest of downtown St. Louis.

What is good to know if travelling to St. Louis?

  • Celebrate Independence Day in style with a flight to St. Louis. Grab a blanket and a couple of chairs and head down to the riverfront for 4th of July. Grab a spot underneath the Arch and enjoy the spectacle. From people watching, to concerts and outdoor vendors and markets, there is much to do to celebrate America’s birthday. And of course, an amazing fireworks display happens on the riverfront.
  • St. Louis’ Soulard Market Place is home to the best outdoor markets in the city, and also one of the best Mardi Gras parties in the Midwest.
  • The Butterfly Garden in St. Louis’ suburb, Chesterfield, is a must-see for travellers of any age. Located in Faust Park about 30 minutes west of St. Louis City, the Butterfly Garden is a delight for everyone.
  • You don’t have to be a baseball fan to appreciate Busch Stadium. Take a tour of the Stadium or take in a game.
  • Beer lovers know St. Louis as the home of Anheuser-Busch. Brewed right in the city centre, the Anheuser-Busch Brewery offers daily tours, and of course, beer tastings. 

St. Louis airport overview

Lambert-St Louis International Airport, or Lamberts as it’s affectionately known, is located 17km (10 miles) northwest of the city of St Louis, Missouri, and is in close proximity to connecting interstate highways. With four long runways and more than 12 million passengers per year, Lamberts is the state’s busiest airport; nonstop flights to Lambert-St Louis International Airport arrive from 88 domestic and international hubs.

Lambert-St Louis has a certain historical pedigree, too. It served as a balloon-launching base in the 19th century and was later visited by the Wright Brothers on one of their early flights. In 1910, Theodore Roosevelt took a flight from here, becoming the first US President to fly, and a few years later the first experimental parachute jump took place over the airfield.

A new construction project – launched in spring 2011 – is set to improve passenger services, boost airport operations and offer good views of the establishment. Terminal 1 is already an architectural spectacle, with exciting LED lighting that may be viewed from the interior and exterior of the building, as well as new flooring, ticket counters, signs, security checkpoints and an atrium, all of which have resulted in a completely new and attractive look for Lambert-St Louis International Airport.

  • What airport do you fly into for flights to St. Louis?

    If you book a flight to St. Louis, you will be flying into Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 2 flights from London to Lambert-St Louis per day from 11 different airlines.

  • Can I find cheaper flights to St. Louis if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to St. Louis on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to St. Louis?

    Based on reviews from Cheapflights users, American Airlines is rated the highest out of the airlines that fly to St. Louis.

  • What is the cheapest airport to fly to in St. Louis?

    Lambert-St Louis is currently the cheapest airport to fly to in St. Louis. One-way flights to Lambert-St Louis typically cost £139, while return flights cost around £216.

  • Where does the fastest flight to St. Louis depart from?

    For those looking to save time traveling to St. Louis, London offers the quickest one-way flight (9 hours 5 minutes).

  • Does Lambert-St Louis have car hire?

    Yes. Those touching down at Lambert-St Louis can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Lambert-St Louis?

    Yes. Lambert-St Louis has hotels nearby for those requiring accommodations. Hampton Inn St. Louis-Airport is the closest property to Lambert-St Louis (0.0 mi away from Lambert-St Louis).

See more FAQs

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