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Cheap flights from the United Kingdom to St. Louis from £432

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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
6 Apr — 13 Apr1
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 1 April 2025.

Round-trip from

£512

One-way from

£432

Popular in

December

Cheapest in

March

Average price

£660
30/4-14/5
  • 30/4-14/5
  • 3 total stops
  • 47h 49m total
  • United Kingdom to St. Louis
4/7
  • 4/7
  • 3 total stops
  • 32h 04m total
  • United Kingdom to St. Louis
Highest demand for flights based on searches. 5% potential increase in price (£33 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).
Average for round-trip flights in April 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 1 April 2025.

Wed 30/414:00LGW - STL
1 stop16h 04mMultiple Airlines
Wed 14/520:15STL - LGW
2 stops31h 45mMultiple Airlines
Deal found 31/3£512
Wed 30/414:10LHR - STL
2 stops36h 00mMultiple Airlines
Wed 7/513:00STL - LHR
2 stops35h 20mMultiple Airlines
Deal found 30/3£597
Thu 15/517:40LHR - STL
2 stops28h 09mUnited Airlines
Thu 22/516:32STL - LHR
1 stop13h 48mUnited Airlines
Deal found 31/3£604
Wed 3/906:15LHR - STL
2 stops20h 08mIberia
Wed 24/914:42STL - LHR
1 stop13h 38mIberia
Deal found 31/3£653
Wed 7/509:25LCY - STL
3 stops32h 45mMultiple Airlines
Mon 12/512:15STL - LCY
3 stops24h 20mMultiple Airlines
Deal found 31/3£664
Wed 30/412:30LHR - STL
1 stop14h 28mBritish Airways
Wed 7/516:15STL - LHR
1 stop12h 15mBritish Airways
Deal found 30/3£669
Tue 16/913:50EDI - STL
2 stops26h 11mUnited Airlines
Wed 24/911:05STL - EDI
2 stops15h 00mUnited Airlines
Deal found 31/3£688
Thu 15/513:10STN - STL
2 stops36h 33mMultiple Airlines
Mon 2/607:30STL - STN
2 stops24h 30mMultiple Airlines
Deal found 31/3£720
Wed 30/406:30LHR - STL
1 stop13h 00mLufthansa
Wed 14/517:29STL - LHR
1 stop12h 16mLufthansa
Deal found 31/3£721
Wed 30/406:50LHR - STL
2 stops13h 59mAir Canada
Wed 14/513:30STL - LHR
1 stop11h 00mAir Canada
Deal found 31/3£739
Wed 3/921:05LHR - STL
3 stops29h 42mScandinavian Airlines
Wed 24/915:30STL - LHR
2 stops20h 10mScandinavian Airlines
Deal found 31/3£741
Thu 15/521:10LTN - STL
2 stops28h 33mMultiple Airlines
Mon 2/607:30STL - LTN
2 stops27h 25mMultiple Airlines
Deal found 31/3£764

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 1 April 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

Wed 30/4

14:00-00:04

1 stop16h 04m

Lambert-St Louis

Wed 14/5

20:15-10:00

2 stops31h 45m

£512

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 30/4

14:10-20:10

2 stops36h 00m

Lambert-St Louis

Wed 7/5

13:00-06:20

2 stops35h 20m

£597

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 15/5

17:40-15:49

2 stops28h 09m

Lambert-St Louis

Thu 22/5

16:32-12:20

1 stop13h 48m

£604

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 3/9

06:15-20:23

2 stops20h 08m

Lambert-St Louis

Wed 24/9

14:42-10:20

1 stop13h 38m

£653

LondonSt. Louis

LCY - STL

LCYSTL

London City

Wed 7/5

09:25-12:10

3 stops32h 45m

Lambert-St Louis

Mon 12/5

12:15-18:35

3 stops24h 20m

£664

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 30/4

12:30-20:58

1 stop14h 28m

Lambert-St Louis

Wed 7/5

16:15-10:30

1 stop12h 15m

£669

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

Tue 16/9

13:50-10:01

2 stops26h 11m

Lambert-St Louis

Wed 24/9

11:05-08:05

2 stops15h 00m

£688

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Thu 15/5

13:10-19:43

2 stops36h 33m

Lambert-St Louis

Mon 2/6

07:30-14:00

2 stops24h 30m

£720

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 30/4

06:30-13:30

1 stop13h 00m

Lambert-St Louis

Wed 14/5

17:29-11:45

1 stop12h 16m

£721

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 30/4

06:50-14:49

2 stops13h 59m

Lambert-St Louis

Wed 14/5

13:30-06:30

1 stop11h 00m

£739

Flights are sorted by cheapest return flights first.

Deals found on 31/3

Showing 1-10 of 49 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 1 April 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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 inches per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

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 1 April 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from United Kingdom to St. Louis. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very Good

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 £477. However, be on the lookout for offers from Aer Lingus 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?

  • 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

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 1 April 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£524Average£715FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£621Average£740FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£645Average£850FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£659Average£936FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£662Average£959FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£702Average£944FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£728Average£891FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
KLMCheapest£754Average£954FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£778Average£1,098FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£809Average£953FlexibilityNo cancel feeOn-timeN/A
Search Delta 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?

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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