Cheap flights from the United Kingdom to St. Louis from £190

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 31 October 2025.

Wed 26/1111:55LHR - STL
1 stop13h 35mBritish Airways
Wed 3/1215:59STL - LHR
1 stop12h 01mBritish Airways
Deal found 29/10£548
Wed 26/1108:40LHR - STL
2 stops18h 06mDelta
Wed 3/1209:30STL - LHR
2 stops17h 15mDelta
Deal found 29/10£552
Thu 27/1115:00LHR - STL
1 stop25h 39mFinnair
Thu 4/1210:56STL - LHR
1 stop14h 54mFinnair
Deal found 30/10£564
Mon 24/1115:00LHR - STL
1 stop13h 59mBritish Airways
Mon 1/1215:43STL - LHR
1 stop10h 32mBritish Airways
Deal found 30/10£571
Mon 24/1113:30LHR - STL
2 stops16h 26mFinnair
Sun 30/1119:58STL - LHR
1 stop32h 27mFinnair
Deal found 30/10£572
Thu 27/1106:30LHR - STL
2 stops16h 19mDelta
Thu 4/1211:40STL - LHR
2 stops15h 05mDelta
Deal found 30/10£578
Thu 27/1109:20LCY - STL
2 stops18h 38mVirgin Atlantic
Thu 4/1211:40STL - LCY
2 stops14h 30mVirgin Atlantic
Deal found 30/10£590
Thu 20/1106:40LHR - STL
2 stops23h 04mScandinavian Airlines
Mon 8/1211:40STL - LHR
2 stops22h 20mScandinavian Airlines
Deal found 30/10£593
Wed 10/1206:15LHR - STL
2 stops20h 09mBritish Airways
Thu 8/112:01STL - LHR
1 stop15h 14mBritish Airways
Deal found 29/10£593
Thu 20/1111:45LHR - STL
1 stop13h 44mBritish Airways
Mon 8/1217:58STL - LHR
1 stop12h 02mBritish Airways
Deal found 30/10£601
Mon 24/1108:40LCY - STL
2 stops19h 18mVirgin Atlantic
Mon 1/1210:45STL - LCY
2 stops14h 30mVirgin Atlantic
Deal found 30/10£603
Tue 18/1108:55MAN - STL
2 stops15h 30mBritish Airways
Tue 25/1114:08STL - MAN
2 stops14h 52mBritish Airways
Deal found 29/10£644

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 31 October 2025.

Round-trip from

£548

One-way from

£190

Popular in

December

Cheapest in

March

Average price

£763

Good round-trip deal

£464 or less
British Airways
  • British Airways
  • 26/11-3/12
  • 2 total stops
  • 25h 36m total
  • United Kingdom to St. Louis
15/1
  • 15/1
  • 1 total stop
  • 23h 54m total
  • United Kingdom to St. Louis
Highest demand for flights based on searches. 4% potential increase in price (£30 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
Average for round-trip flights in October 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 31 October 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 5/3

12:30-12:46

2 stops30h 16m

Lambert-St Louis

Mon 9/3

19:05-09:00

2 stops56h 55m

£547

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

13:30-23:56

2 stops16h 26m

Lambert-St Louis

Mon 1/12

15:43-10:25

1 stop12h 42m

£572

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

12:35-08:09

1 stop25h 34m

Lambert-St Louis

Sun 30/11

19:58-10:25

1 stop32h 27m

£572

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 27/11

06:30-16:49

2 stops16h 19m

Lambert-St Louis

Thu 4/12

11:40-08:45

2 stops15h 05m

£578

LondonSt. Louis

LCY - STL

LCYSTL

London City

Thu 27/11

09:20-21:58

2 stops18h 38m

Lambert-St Louis

Thu 4/12

11:40-08:10

2 stops14h 30m

£590

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 10/12

06:15-20:24

2 stops20h 09m

Lambert-St Louis

Thu 8/1

12:01-09:15

1 stop15h 14m

£593

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 10/12

06:15-20:24

2 stops20h 09m

Lambert-St Louis

Wed 7/1

15:20-10:25

1 stop13h 05m

£593

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Fri 6/2

10:35-19:29

1 stop14h 54m

Lambert-St Louis

Sat 14/2

14:19-06:55

1 stop10h 36m

£594

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Fri 6/2

17:00-09:03

2 stops22h 03m

Lambert-St Louis

Sat 14/2

11:46-08:15

1 stop14h 29m

£600

LondonSt. Louis

LCY - STL

LCYSTL

London City

Mon 24/11

08:40-21:58

2 stops19h 18m

Lambert-St Louis

Mon 1/12

10:45-07:15

2 stops14h 30m

£603

Flights are sorted by cheapest return flights first.

Deals found on 29/10

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 £414). Flying from United Kingdom to St. Louis in July is currently the most expensive (average of £628). 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 31 October 2025.

It’s optimal to fly from United Kingdom to St. Louis in the afternoon. By choosing this option you can save up to 14% 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 Wednesday at midday 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 31 October 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.

Boarding

7.6

Crew

8.1

Overall

7.6

Food

6.7

Comfort

7.4

Entertainment

6.9

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.

Boarding

7.6

Crew

8.1

Overall

7.6

Food

6.7

Comfort

7.4

Entertainment

6.9

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.

Boarding

7.6

Crew

8.1

Overall

7.6

Food

6.7

Comfort

7.4

Entertainment

6.9

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.

Boarding

7.6

Crew

8.1

Overall

7.6

Food

6.7

Comfort

7.4

Entertainment

6.9

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.

Boarding

7.6

Crew

8.1

Overall

7.6

Food

6.7

Comfort

7.4

Entertainment

6.9

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.

Boarding

7.6

Crew

8.1

Overall

7.6

Food

6.7

Comfort

7.4

Entertainment

6.9

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 16h 19m. Fly via American Airlines, Finnair, or Delta 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 British Airways, with whom users have recently found tickets for as low as £388. However, be on the lookout for offers from Lufthansa and United Airlines, 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 £464 for a flight from United Kingdom to St. Louis. The cheapest flight overall is £462 while the most popular route, (London Heathrow - Lambert-St Louis) is currently priced at £548.

  • 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 £414). Flying from United Kingdom to St. Louis in July is currently the most expensive (average of £628). 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 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest£89Average£780FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Scandinavian AirlinesCheapest£488Average£670FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
KLMCheapest£512Average£900FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£518Average£725FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air CanadaCheapest£616Average£767FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£622Average£825FlexibilityNo cancel feeOn-time70%
Search British Airways flights
DeltaCheapest£633Average£883FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest£637Average£834FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£637Average£734FlexibilityNo cancel feeOn-time77%
Search Iberia flights
LufthansaCheapest£705Average£866FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

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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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