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Cheap flights from the United Kingdom to St. Louis from £262

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
20 Jul — 27 Jul1
1 adult

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 15 July 2025.

Round-trip from

£619

One-way from

£262

Popular in

December

Cheapest in

March

Average price

£859
28/8-4/9
  • 28/8-4/9
  • 6 total stops
  • 54h 25m total
  • United Kingdom to St. Louis
Search Deals
6/9
  • 6/9
  • 2 total stops
  • 29h 30m total
  • United Kingdom to St. Louis
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£17 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 15 July 2025.

Thu 28/813:05LHR - STL
3 stops29h 05mMultiple Airlines
Thu 4/913:00STL - LHR
3 stops25h 20mMultiple Airlines
Deal found 14/7£619
Tue 9/919:10MAN - STL
2 stops32h 52mScandinavian Airlines
Tue 23/915:36STL - MAN
2 stops35h 54mScandinavian Airlines
Deal found 14/7£624
Wed 27/807:10LGW - STL
3 stops36h 22mMultiple Airlines
Wed 3/916:05STL - LGW
2 stops19h 00mMultiple Airlines
Deal found 13/7£633
Wed 27/806:45GLA - STL
3 stops36h 47mMultiple Airlines
Wed 3/913:30STL - GLA
2 stops22h 45mMultiple Airlines
Deal found 13/7£645
Thu 16/1006:40LHR - STL
2 stops22h 59mScandinavian Airlines
Tue 21/1013:30STL - LHR
2 stops22h 10mScandinavian Airlines
Deal found 13/7£646
Sun 24/808:00LHR - STL
1 stop21h 44mUnited Airlines
Sun 7/906:00STL - LHR
1 stop19h 15mUnited Airlines
Deal found 13/7£660
Thu 28/806:15STN - STL
3 stops19h 45mMultiple Airlines
Thu 4/913:30STL - STN
3 stops19h 50mMultiple Airlines
Deal found 14/7£663
Wed 27/806:05LTN - STL
3 stops37h 27mMultiple Airlines
Wed 3/916:05STL - LTN
2 stops22h 40mMultiple Airlines
Deal found 13/7£666
Sat 20/909:30LHR - STL
1 stop16h 27mAir Canada
Sat 4/1013:30STL - LHR
1 stop14h 05mAir Canada
Deal found 14/7£700
Tue 25/1114:10LHR - STL
1 stop13h 31mBritish Airways
Mon 1/1217:57STL - LHR
1 stop11h 43mBritish Airways
Deal found 14/7£712
Thu 4/1209:40LCY - STL
2 stops20h 02mLufthansa
Mon 8/1218:42STL - LCY
2 stops15h 58mLufthansa
Deal found 12/7£726
Mon 25/808:40LHR - STL
2 stops15h 43mDelta
Tue 9/915:36STL - LHR
2 stops13h 49mDelta
Deal found 14/7£727

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 July 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

Thu 28/8

13:05-12:10

3 stops29h 05m

Lambert-St Louis

Thu 4/9

13:00-20:20

3 stops25h 20m

£619

ManchesterSt. Louis

MAN - STL

MANSTL

Manchester

Tue 9/9

19:10-22:02

2 stops32h 52m

Lambert-St Louis

Tue 23/9

15:36-09:30

2 stops35h 54m

£624

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Wed 27/8

07:10-13:32

3 stops36h 22m

Lambert-St Louis

Wed 3/9

16:05-17:05

2 stops19h 00m

£633

GlasgowSt. Louis

GLA - STL

GLASTL

Glasgow Intl

Wed 27/8

06:45-13:32

3 stops36h 47m

Lambert-St Louis

Wed 3/9

13:30-18:15

2 stops22h 45m

£645

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 16/10

06:40-23:39

2 stops22h 59m

Lambert-St Louis

Tue 21/10

13:30-17:40

2 stops22h 10m

£646

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sun 24/8

08:00-23:44

1 stop21h 44m

Lambert-St Louis

Sun 7/9

06:00-07:15

1 stop19h 15m

£660

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Thu 28/8

06:15-20:00

3 stops19h 45m

Lambert-St Louis

Thu 4/9

13:30-15:20

3 stops19h 50m

£663

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Wed 27/8

06:05-13:32

3 stops37h 27m

Lambert-St Louis

Wed 3/9

16:05-20:45

2 stops22h 40m

£666

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sat 20/9

09:30-19:57

1 stop16h 27m

Lambert-St Louis

Sat 4/10

13:30-09:35

1 stop14h 05m

£700

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 25/11

14:10-21:41

1 stop13h 31m

Lambert-St Louis

Mon 1/12

17:57-11:40

1 stop11h 43m

£712

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 52 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 15 July 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 15 July 2025.
See what other customers who have flown with Delta, KLM, andFinnair 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.
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,956 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,858 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as £518. However, be on the lookout for offers from Aer Lingus and Lufthansa, 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 City - Lambert-St Louis as they are the most popular.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for United Kingdom to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 15 July 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest£173Average£763FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Scandinavian AirlinesCheapest£478Average£618FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
FinnairCheapest£508Average£682FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£623Average£854FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£623Average£829FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£624Average£718FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest£633Average£911FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£675Average£847FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£715Average£890FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest£726Average£849FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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