Cheap flights from the United Kingdom to St. Louis from £236

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 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
16 Jan — 23 Jan1
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 17 December 2025.

Thu 25/1210:05LHR - STL
1 stop15h 17mAmerican Airlines
Sun 18/113:35STL - LHR
1 stop12h 40mAmerican Airlines
Deal found 16/12£969
Sat 27/1214:50LHR - STL
2 stops30h 39mMultiple Airlines
Thu 8/116:05STL - LHR
1 stop10h 25mMultiple Airlines
Deal found 15/12£985
Sat 27/1210:05LHR - STL
1 stop15h 21mAmerican Airlines
Thu 8/113:35STL - LHR
1 stop12h 40mAmerican Airlines
Deal found 15/12£1,000
Thu 25/1211:45LHR - STL
2 stops14h 56mDelta
Sun 18/111:23STL - LHR
1 stop13h 42mDelta
Deal found 15/12£1,036
Tue 16/1219:25LCY - STL
2 stops31h 13mMultiple Airlines
Sat 31/109:33STL - LCY
2 stops25h 12mMultiple Airlines
Deal found 16/12£1,079
Tue 16/1213:00LHR - STL
1 stop13h 47mVirgin Atlantic
Sat 31/117:04STL - LHR
2 stops45h 06mVirgin Atlantic
Deal found 16/12£1,112
Tue 23/1213:30LHR - STL
1 stop30h 25mMultiple Airlines
Sun 4/116:05STL - LHR
1 stop32h 25mMultiple Airlines
Deal found 15/12£1,139
Tue 16/1211:30LHR - STL
2 stops16h 27mDelta
Sat 31/109:59STL - LHR
2 stops17h 06mDelta
Deal found 16/12£1,170
Tue 23/1213:45LHR - STL
2 stops55h 44mAir Canada
Sun 4/118:35STL - LHR
2 stops53h 55mAir Canada
Deal found 15/12£1,204
Mon 15/1220:40MAN - STL
2 stops50h 10mAer Lingus
Sat 31/113:40STL - MAN
2 stops23h 35mAer Lingus
Deal found 15/12£1,213
Mon 15/1211:25MAN - STL
3 stops29h 25mMultiple Airlines
Sat 31/118:06STL - MAN
3 stops34h 29mMultiple Airlines
Deal found 15/12£1,251
Mon 15/1211:00MAN - STL
2 stops28h 50mDelta
Sat 31/117:04STL - MAN
1 stop11h 26mDelta
Deal found 15/12£1,259

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 17 December 2025.

Round-trip from

£380

One-way from

£236

Popular in

December

Cheapest in

March

Average price

£1,021

Good round-trip deal

£577 or less
30/1-6/2
  • 30/1-6/2
  • 2 total stops
  • 32h 15m total
  • United Kingdom to St. Louis
22/1
  • 22/1
  • 1 total stop
  • 26h 23m total
  • United Kingdom to St. Louis
Highest demand for flights based on searches. 4% potential increase in price (£25 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from United Kingdom to Lambert-St Louis.

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 17 December 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

LGW - STL

LGWSTL

London Gatwick

Thu 22/1

14:00-23:33

1 stop15h 33m

Lambert-St Louis

Mon 26/1

10:16-10:00

1 stop17h 44m

£360

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 30/1

14:00-23:33

1 stop15h 33m

Lambert-St Louis

Fri 6/2

11:18-10:00

1 stop16h 42m

£380

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 29/1

14:00-10:23

1 stop26h 23m

Lambert-St Louis

Thu 5/2

17:42-10:00

1 stop34h 18m

£410

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Mon 2/2

14:00-23:33

1 stop15h 33m

Lambert-St Louis

Fri 6/2

11:18-10:00

1 stop16h 42m

£423

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 16/1

14:00-22:34

1 stop14h 34m

Lambert-St Louis

Mon 19/1

08:39-10:00

1 stop19h 21m

£431

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 16/3

08:20-17:13

1 stop13h 53m

Lambert-St Louis

Mon 23/3

18:57-12:00

1 stop12h 03m

£527

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 16/3

10:15-21:26

2 stops16h 11m

Lambert-St Louis

Mon 23/3

11:47-06:50

1 stop14h 03m

£536

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 12/1

09:55-18:34

1 stop14h 39m

Lambert-St Louis

Mon 19/1

13:35-06:55

1 stop11h 20m

£546

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 5/5

08:20-16:11

1 stop13h 51m

Lambert-St Louis

Tue 19/5

18:29-21:40

2 stops21h 11m

£548

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 12/1

11:45-18:34

1 stop12h 49m

Lambert-St Louis

Mon 26/1

14:54-07:00

1 stop10h 06m

£548

Flights are sorted by cheapest return flights first.

Deals found on 15/12

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, September is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of £403). Flying from United Kingdom to St. Louis in July is currently the most expensive (average of £607). 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 17 December 2025.

It’s optimal to fly from United Kingdom to St. Louis in the evening. By choosing this option you can save up to 9% on the cost of your flight, compared to a flight at midday.

What is the cheapest day to fly from United Kingdom to St. Louis?

Use this chart to determine the cheapest time to fly return from United Kingdom to St. Louis. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their United Kingdom to St. Louis flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 17 December 2025.
See what other customers who have flown with Finnair, Virgin Atlantic, andUnited Airlines 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.

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.4

Crew

8.1

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.

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.4

Crew

8.1

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.

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.4

Crew

8.1

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.

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.4

Crew

8.1

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.

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.4

Crew

8.1

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.

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.4

Crew

8.1

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 07m. Fly via British Airways, Finnair, or KLM to get the fastest option. The distance from United Kingdom to St. Louis is about 4061 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 British Airways, with whom users have recently found tickets for as low as £343. However, be on the lookout for offers from WestJet and Iberia, 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?

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

    On average you can expect to pay £635 for a flight from United Kingdom to St. Louis. The cheapest flight overall is £538 while the most popular route, (London Heathrow - Lambert-St Louis) is currently priced at £527.

  • 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, September is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of £403). Flying from United Kingdom to St. Louis in July is currently the most expensive (average of £607). 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

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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 17 December 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest£171Average£767FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest£481Average£811FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£504Average£886FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£508Average£682FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£561Average£852FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£595Average£698FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air CanadaCheapest£603Average£748FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£616Average£815FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest£622Average£846FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IberiaCheapest£647Average£721FlexibilityNo cancel feeOn-time77%
Search Iberia 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.

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