Cheap flights from the United Kingdom to St. Louis from £291

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
18 out — 25 out1
1 adult
1 adult, Economy

Cheap 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 18 setembro 2025.

Round-trip from

£596

One-way from

£291

Popular in

December

Cheapest in

March

Average price

£685
Scandinavian Airlines
  • Scandinavian Airlines
  • 20/11-8/12
  • 5 total stops
  • 46h 35m total
  • United Kingdom to St. Louis
6/10
  • 6/10
  • 2 total stops
  • 49h 07m total
  • United Kingdom to St. Louis
Highest demand for flights based on searches. 5% potential increase in price (£31 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from United Kingdom to St. Louis

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 18 setembro 2025.

qui 20/1107:05LHR - STL
3 stops22h 35mScandinavian Airlines
seg 8/1211:40STL - LHR
2 stops24h 00mScandinavian Airlines
Deal found 16/9£596
sex 31/1021:05LHR - STL
3 stops29h 59mScandinavian Airlines
sex 7/1115:59STL - LHR
2 stops18h 01mScandinavian Airlines
Deal found 16/9£602
qui 23/1006:40LHR - STL
2 stops23h 01mScandinavian Airlines
ter 28/1015:59STL - LHR
2 stops24h 41mScandinavian Airlines
Deal found 15/9£624
qui 2/1006:50LHR - STL
2 stops19h 07mMultiple Airlines
sex 17/1011:39STL - LHR
1 stop12h 16mMultiple Airlines
Deal found 16/9£625
qua 26/1106:30LHR - STL
1 stop13h 25mLufthansa
dom 30/1112:31STL - LHR
1 stop11h 24mLufthansa
Deal found 15/9£627
qua 19/1106:30LHR - STL
1 stop13h 25mLufthansa
sex 5/1213:00STL - LHR
1 stop10h 55mLufthansa
Deal found 16/9£630
qui 2/1006:50LHR - STL
2 stops19h 07mMultiple Airlines
qui 16/1017:28STL - LHR
1 stop12h 17mMultiple Airlines
Deal found 16/9£633
qui 16/1014:00LGW - STL
2 stops25h 07mMultiple Airlines
qui 23/1013:41STL - LGW
1 stop14h 19mMultiple Airlines
Deal found 16/9£637
qua 26/1109:00LHR - STL
2 stops18h 40mUnited Airlines
dom 30/1111:05STL - LHR
1 stop12h 50mUnited Airlines
Deal found 15/9£638
qua 19/1109:00LHR - STL
2 stops18h 40mUnited Airlines
sex 5/1212:55STL - LHR
1 stop11h 45mUnited Airlines
Deal found 16/9£639
sex 31/1006:30LHR - STL
1 stop13h 25mLufthansa
sex 7/1111:49STL - LHR
1 stop12h 31mLufthansa
Deal found 16/9£640
ter 7/1011:20LHR - STL
1 stop12h 42mVirgin Atlantic
qua 22/1014:15STL - LHR
2 stops14h 15mVirgin Atlantic
Deal found 15/9£640

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 18 setembro 2025.
Use the filters below to find and compare flights from the United Kingdom to St. Louis that are best for you.

Fly from

United Kingdom

Fly to

St. Louis

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

qui 20/11

07:05-23:40

3 stops22h 35m

Lambert-St Louis

seg 8/12

11:40-17:40

2 stops24h 00m

£596

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

sex 31/10

21:05-22:04

3 stops29h 59m

Lambert-St Louis

sex 7/11

15:59-16:00

2 stops18h 01m

£602

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

qui 23/10

06:40-23:41

2 stops23h 01m

Lambert-St Louis

ter 28/10

15:59-21:40

2 stops24h 41m

£624

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

qui 9/10

06:50-19:57

2 stops19h 07m

Lambert-St Louis

sáb 18/10

12:29-07:15

1 stop12h 46m

£625

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

qua 26/11

06:30-13:55

1 stop13h 25m

Lambert-St Louis

dom 30/11

12:31-05:55

1 stop11h 24m

£627

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

qui 16/10

14:00-09:07

2 stops25h 07m

Lambert-St Louis

qui 23/10

13:41-10:00

1 stop14h 19m

£637

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

qua 26/11

09:00-22:45

2 stops19h 45m

Lambert-St Louis

dom 30/11

06:30-05:55

1 stop17h 25m

£639

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

qua 19/11

09:00-21:40

2 stops18h 40m

Lambert-St Louis

qui 4/12

11:25-06:40

2 stops13h 15m

£639

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

qua 19/11

09:00-21:40

2 stops18h 40m

Lambert-St Louis

sex 5/12

12:55-06:40

1 stop11h 45m

£639

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

ter 7/10

11:20-18:02

1 stop12h 42m

Lambert-St Louis

qua 22/10

17:15-11:10

1 stop11h 55m

£640

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 60 results
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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

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

Currently, February is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of £722). Flying from United Kingdom to St. Louis in December is currently the most expensive (average of £1,033). 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 18 setembro 2025.

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 18 setembro 2025.
See what other customers who have flown with Finnair, United Airlines, andVirgin Atlantic 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.

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Comfort

7.5

Boarding

7.6

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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 13h 25m. Fly via Scandinavian Airlines, Lufthansa, or American 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 most popular routes from United Kingdom to St. Louis?

  • 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, February is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of £722). Flying from United Kingdom to St. Louis in December is currently the most expensive (average of £1,033). 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

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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 18 setembro 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest£86Average£753FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Scandinavian AirlinesCheapest£471Average£651FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
FinnairCheapest£501Average£694FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air CanadaCheapest£594Average£741FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£605Average£815FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£615Average£710FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£621Average£800FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£662Average£831FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£664Average£874FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£705Average£876FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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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?

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

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

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