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St. Louis

$250+ Cheap flights from the United Kingdom to St. Louis (STL)

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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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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 October 29, 2025.

This British Airways deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2611:55 amLHR - STL
1 stop13h 35mBritish Airways
Wed 12/33:59 pmSTL - LHR
1 stop12h 01mBritish Airways
Deal found 10/29$722
This lastminute.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:35 pmLHR - STL
2 stops34h 22mVirgin Atlantic
Tue 12/237:02 pmSTL - LHR
1 stop30h 48mVirgin Atlantic
Deal found 10/28$723
This Finnair deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:45 amLHR - STL
1 stop12h 58mMultiple Airlines
Tue 12/2311:41 amSTL - LHR
1 stop16h 19mMultiple Airlines
Deal found 10/28$724
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2611:45 amLHR - STL
2 stops15h 01mDelta
Wed 12/311:40 amSTL - LHR
1 stop12h 45mDelta
Deal found 10/29$727
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:40 amLHR - STL
2 stops18h 07mDelta
Wed 12/109:30 amSTL - LHR
2 stops17h 15mDelta
Deal found 10/28$728
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/272:00 pmLGW - STL
1 stop15h 57mMultiple Airlines
Thu 12/43:30 pmSTL - LGW
1 stop12h 30mMultiple Airlines
Deal found 10/28$742
This The Travel House deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/275:05 pmLHR - STL
1 stop22h 18mFinnair
Thu 12/42:54 pmSTL - LHR
1 stop10h 06mFinnair
Deal found 10/28$749
This oojo deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:50 amLCY - STL
2 stops21h 16mBritish Airways
Wed 12/1010:13 amSTL - LCY
2 stops16h 37mBritish Airways
Deal found 10/28$750
This TravelUp deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:45 amLHR - STL
1 stop13h 50mVirgin Atlantic
Thu 12/45:12 pmSTL - LHR
1 stop12h 28mVirgin Atlantic
Deal found 10/28$755
This Netflights deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/243:00 pmLHR - STL
1 stop13h 59mBritish Airways
Mon 12/12:17 pmSTL - LHR
1 stop11h 58mBritish Airways
Deal found 10/29$757
This KLM deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:30 amLHR - STL
2 stops16h 19mKLM
Thu 12/412:49 pmSTL - LHR
1 stop12h 16mKLM
Deal found 10/28$768
This British Airways deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:55 amLHR - STL
1 stop13h 10mBritish Airways
Sun 11/306:45 pmSTL - LHR
1 stop32h 30mBritish Airways
Deal found 10/28$780

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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$716
(lastminute.com)

One-way from

$250
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,005
Provider with most accurate pricing for London (LON)-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Lambert-St Louis flights.
Search Deals
From United Kingdom to Lambert-St Louis
Search Deals
One-way flight from United Kingdom to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated October 29, 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 3/5

11:20 am-6:08 pm

2 stops36h 48m

Lambert-St Louis

Mon 3/9

9:39 am-9:00 am

2 stops18h 21m

$723

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 12/8

11:45 am-6:43 pm

1 stop12h 58m

Lambert-St Louis

Tue 12/23

11:41 am-10:00 am

1 stop16h 19m

$724

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 12/3

8:40 am-8:47 pm

2 stops18h 07m

Lambert-St Louis

Wed 12/10

9:30 am-8:45 am

2 stops17h 15m

$728

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 12/3

11:45 am-8:47 pm

2 stops15h 02m

Lambert-St Louis

Wed 12/10

2:02 pm-7:50 am

1 stop11h 48m

$728

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 11/27

2:00 pm-11:57 pm

1 stop15h 57m

Lambert-St Louis

Thu 12/4

3:30 pm-10:00 am

1 stop12h 30m

$742

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 11/24

2:45 pm-11:07 pm

1 stop14h 22m

Lambert-St Louis

Mon 12/1

3:43 pm-8:15 am

1 stop10h 32m

$759

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 11/27

6:30 am-4:49 pm

2 stops16h 19m

Lambert-St Louis

Thu 12/4

12:49 pm-7:05 am

1 stop12h 16m

$768

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 11/27

6:30 am-4:49 pm

2 stops16h 19m

Lambert-St Louis

Thu 12/4

7:02 pm-11:40 am

1 stop10h 38m

$768

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Fri 2/20

6:30 am-4:50 pm

2 stops16h 20m

Lambert-St Louis

Wed 2/25

1:00 pm-6:25 am

1 stop11h 25m

$776

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 12/10

6:15 am-8:24 pm

2 stops20h 09m

Lambert-St Louis

Wed 1/7

3:20 pm-10:25 am

1 stop13h 05m

$782

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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 round-trip 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 $545). Flying from United Kingdom to St. Louis in July is currently the most expensive (average of $828). 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 October 29, 2025.

It’s typically best to fly out from United Kingdom to St. Louis in the evening. Doing so could potentially save you 15% on the flight price compared to flying in the morning, which is usually more expensive.

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 October 29, 2025.
Get a feel of what it's like to fly with Lufthansa and British Airways from the United Kingdom to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,541 reviews

Overall

6.8

Food

6.3

Boarding

7.0

Comfort

6.8

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.
Lufthansa
6.8
Okay
7,541 reviews
Lufthansa
6.8
Okay
7,541 reviews

Overall

6.8

Food

6.3

Boarding

7.0

Comfort

6.8

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.
British Airways
6.7
Okay
7,487 reviews
Lufthansa
6.8
Okay
7,541 reviews

Overall

6.8

Food

6.3

Boarding

7.0

Comfort

6.8

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.

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?

    If you book a flight to St. Louis from United Kingdom, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • How long is the flight from United Kingdom to St. Louis?

    For as low as $728, American Airlines can have you in St. Louis from United Kingdom in 15h 02m. United Kingdom and St. Louis are separated by a distance of 4186 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as $511. Users have also found prices from $517 and $523 on Lufthansa and United Airlines, respectively.

  • 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 vacation 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 $545). Flying from United Kingdom to St. Louis in July is currently the most expensive (average of $828). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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 2 airlines flying from United Kingdom to St. Louis

Discover the top 2 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 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$555Average$1,063FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$925Average$925FlexibilityNo cancel feeOn-time76%

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