Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to St. Louis from £286

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
14 Jun — 21 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to St. Louis

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to St. Louis
Explore the most affordable flight options available from United Kingdom to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 May 2026.

Wed 2/911:45
LHR
-
STL
2 stops17h 52m
KLM
Wed 23/919:05
STL
-
LHR
1 stop12h 10m
KLM
Deal found 11/5£644
Wed 23/912:25
LHR
-
STL
1 stop16h 36m
Virgin Atlantic
Sun 4/1017:45
STL
-
LHR
1 stop31h 25m
Virgin Atlantic
Deal found 12/5£649
Sat 6/620:00
EDI
-
STL
3 stops30h 25m
Multiple Airlines
Sat 13/608:40
STL
-
EDI
2 stops23h 35m
Multiple Airlines
Deal found 11/5£652
Fri 19/614:00
LGW
-
STL
1 stop15h 49m
Multiple Airlines
Fri 3/717:06
STL
-
LGW
2 stops34h 54m
Multiple Airlines
Deal found 11/5£652
Tue 22/916:25
LHR
-
STL
Nonstop9h 05m
British Airways
Wed 30/916:47
STL
-
LHR
1 stop13h 23m
British Airways
Deal found 13/5£654
Wed 23/906:30
LHR
-
STL
1 stop12h 55m
Multiple Airlines
Sun 4/1021:40
STL
-
LHR
Nonstop8h 00m
Multiple Airlines
Deal found 12/5£655
Mon 7/906:15
LHR
-
STL
2 stops19h 10m
British Airways
Thu 17/909:46
STL
-
LHR
1 stop16h 14m
British Airways
Deal found 13/5£655
Tue 22/916:25
LHR
-
STL
Nonstop9h 05m
British Airways
Tue 6/1018:51
STL
-
LHR
1 stop11h 59m
British Airways
Deal found 11/5£656
Wed 2/912:15
LHR
-
STL
1 stop17h 44m
Finnair
Wed 23/916:29
STL
-
LHR
1 stop13h 46m
Finnair
Deal found 14/5£657
Fri 26/614:00
LGW
-
STL
1 stop15h 49m
Multiple Airlines
Sat 11/716:52
STL
-
LGW
2 stops35h 08m
Multiple Airlines
Deal found 14/5£657
Tue 15/906:30
LHR
-
STL
2 stops14h 01m
Delta
Wed 23/917:30
STL
-
LHR
1 stop13h 45m
Delta
Deal found 15/5£658
Wed 23/911:00
LHR
-
STL
2 stops28h 16m
Iberia
Wed 30/918:51
STL
-
LHR
1 stop13h 34m
Iberia
Deal found 13/5£659

Find flight deals from United Kingdom to St. Louis

Keep the following information in mind while searching for United Kingdom to St. Louis flight deals. Data was last updated 15 May 2026.

Round-trip from

£644

One-way from

£286

Popular in

July

Cheapest in

February

Average price

£683

Good round-trip deal

£814 or less
KLM
  • KLM
  • 2/9-23/9
  • 3 total stops
  • 30h 02m total
  • United Kingdom to St. Louis
Search Deals
1/9
  • 1/9
  • 1 total stop
  • 16h 14m total
  • United Kingdom to St. Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£70 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 May 2026.
Use the filters below to find and compare flights from the United Kingdom to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 1/9

06:30-18:02

2 stops17h 32m

Lambert-St Louis

Tue 22/9

09:00-07:10

2 stops16h 10m

£658

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 8/9

06:30-18:02

2 stops17h 32m

Lambert-St Louis

Tue 15/9

10:45-08:50

2 stops16h 05m

£661
Fastest return journey

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 10/9

12:15-18:02

1 stop11h 47m

Lambert-St Louis

Tue 15/9

16:47-09:25

1 stop10h 38m

£705

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 9/6

10:05-19:21

1 stop15h 16m

Lambert-St Louis

Tue 15/9

20:07-12:15

1 stop10h 08m

£722

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 19/6

14:00-23:49

1 stop15h 49m

Lambert-St Louis

Fri 3/7

16:17-10:00

1 stop35h 43m

£729

ManchesterSt. Louis

MAN - STL

MANSTL

Manchester

Thu 3/9

08:50-23:23

2 stops20h 33m

Lambert-St Louis

Wed 9/9

09:46-09:50

2 stops18h 04m

£759

LondonSt. Louis

LCY - STL

LCYSTL

London City

Wed 16/9

07:00-21:23

2 stops20h 23m

Lambert-St Louis

Wed 23/9

09:46-13:10

2 stops21h 24m

£768

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 17/6

06:30-17:23

2 stops16h 53m

Lambert-St Louis

Tue 23/6

17:36-13:05

1 stop13h 29m

£783

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 16/6

14:45-00:16

1 stop15h 31m

Lambert-St Louis

Tue 23/6

13:42-09:05

1 stop13h 23m

£784

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 16/6

08:40-20:39

2 stops17h 59m

Lambert-St Louis

Tue 23/6

15:57-12:15

2 stops14h 18m

£788

Flights are sorted by cheapest return flights first.

Deals found on 12/5

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from United Kingdom to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from United Kingdom 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 from the United Kingdom to St. Louis

How far ahead should I book a flight from United Kingdom to St. Louis?

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from United Kingdom to St. Louis?

Currently, August is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of £68). Flying from United Kingdom to St. Louis in November is currently the most expensive (average of £491). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GB to STL?

Find hourly flight availability from United Kingdom to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 May 2026.

When flying from United Kingdom to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 15 May 2026.
See what other customers who have flown with United Airlines,Virgin Atlantic, andAir Canada from the United Kingdom to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,728 reviews
Check prices

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,728 reviews
United Airlines
7.4
Good
9,728 reviews
Check prices

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Virgin Atlantic
7.4
Good
688 reviews
United Airlines
7.4
Good
9,728 reviews
Check prices

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Air Canada
7.1
Good
11,046 reviews
United Airlines
7.4
Good
9,728 reviews
Check prices

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Lufthansa
6.8
Okay
8,004 reviews
United Airlines
7.4
Good
9,728 reviews
Check prices

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
British Airways
6.7
Okay
7,982 reviews
United Airlines
7.4
Good
9,728 reviews
Check prices

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from United Kingdom to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

  • How long is the flight from United Kingdom to St. Louis?

    There are many flights that can get you from United Kingdom to St. Louis in 11h 47m. Fly via Delta, British Airways, or Scandinavian Airlines to get the fastest option. The distance from United Kingdom to St. Louis is about 4186 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from United Kingdom to St. Louis one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as £341. However, be on the lookout for offers from British Airways and Finnair, as they are both options that can get you from United Kingdom to St. Louis for a low price.

  • What are the most popular routes from United Kingdom to St. Louis?

    When deciding which route to take from United Kingdom to St. Louis consider London Heathrow - Lambert-St Louis, London Gatwick - Lambert-St Louis or London Stansted - Lambert-St Louis as they are the most popular.

  • What are the most reliable airlines from United Kingdom to St. Louis?

    Consider American Airlines (100%), Aer Lingus (100%) or Finnair (100%) when booking your flight. These represent the most reliable airlines when flying from United Kingdom to St. Louis.

  • What are the cheapest flights from United Kingdom to St. Louis?

    On average you can expect to pay £984 for a flight from United Kingdom to St. Louis. The cheapest flight overall is £713 while the most popular route, (London Heathrow - Lambert-St Louis) is currently priced at £632.

  • Can I find deals for flights from United Kingdom to St. Louis that include hotel bookings?

    Yes. In addition to deals on United Kingdom to St. Louis flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to St. Louis.

  • Can I find deals for business class flights from United Kingdom to St. Louis?

    Yes. Cheapflights offers flight deals from United Kingdom to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of £68). Flying from United Kingdom to St. Louis in November is currently the most expensive (average of £491). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from United Kingdom to St. Louis

Discover the top 10 airlines that operate flights from United Kingdom to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 May 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest£174Average£743FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Aer LingusCheapest£370Average£859FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£475Average£796FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£480Average£766FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£522Average£853FlexibilityNo cancel feeOn-time75%
Search KLM flights
Virgin AtlanticCheapest£558Average£823FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£589Average£672FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Scandinavian AirlinesCheapest£598Average£707FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air CanadaCheapest£606Average£717FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapest£611Average£868FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to St. Louis?

Cheapflights makes it easy to find United Kingdom to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to St. Louis?

Cheapflights helps you find that perfect flight to St. Louis from United Kingdom by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from United Kingdom to St. Louis with no change fees?

Need flexible booking options for your flight to St. Louis from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from United Kingdom to St. Louis become cheaper?

Yes! Start tracking prices for United Kingdom to St. Louis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.