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Cheap flights from London (LON) to St. Louis (STL) from $297

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 6/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
LON — STL
Jun 5 — Jun 121
From?
To?
Wed 6/5
Wed 6/12
1 adult, Economy
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The best prices from London to Lambert-St Louis are usually found in November or October, booked 27 days in advance, depart on a Wednesday or Saturday and return on a Wednesday

Cheap flight deals from London to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 31, 2024.

Popular in

August

Cheapest in

November

Average price

$756

Round-trip from

$319
High demand for flights, 25% potential price rise
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Best time to find cheap flights, 18% potential price drop
Search Deals
Average for round-trip flights in May 2024
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From London (LON) to Lambert-St Louis
Search Deals

What is the cheapest day to fly round-trip from London to St. Louis?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 31% on the overall cost on flights from London to St. Louis.

How far in advance should I book a flight from London to St. Louis?

Find a great deal and save up to 14% by booking at least 28 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London to St. Louis within the next two weeks, with the cheapest ticket starting at $661.

What is the cheapest month to fly from London to St. Louis?

The best pricing can be found in the month of November. Prices to St. Louis from London average $774. You can even find prices in November for less than $774, as users have found deals to St. Louis from as low as $550. The month of August appears to be one of the more expensive times to travel to St. Louis from London. Flying in the targeted month can save you up to 32%.

What is the cheapest time of day to fly from LON to STL?

A simple way to save on the total cost of your ticket is to fly from London to St. Louis in the afternoon. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight at noon.

Cheap Finnair flights from London to St. Louis

Explore cheap flight options specifically provided by Finnair for the route between London and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,765,679 searches. Data last updated May 31, 2024.
Peruse some of the lowest-priced Finnair flights we've found from London to St. Louis. Deals update often to give you more flight options matching your criteria
Thu 9/2610:10 amLHR - STL
1 stop18h 50mFinnair
Sun 9/295:35 pmSTL - LHR
1 stop33h 30mFinnair
Deal found 5/30$688
Wed 10/211:15 amLHR - STL
1 stop17h 45mFinnair
Tue 10/222:38 pmSTL - LHR
1 stop10h 52mFinnair
Deal found 5/30$720
Thu 9/511:15 amLHR - STL
1 stop17h 45mFinnair
Thu 9/2612:48 pmSTL - LHR
1 stop14h 17mFinnair
Deal found 5/30$725
Mon 8/2611:15 amLHR - STL
1 stop17h 27mFinnair
Wed 9/49:05 amSTL - LHR
1 stop16h 25mFinnair
Deal found 5/30$726
Thu 6/2711:15 amLHR - STL
1 stop17h 43mFinnair
Thu 7/45:15 amSTL - LHR
1 stop20h 25mFinnair
Deal found 5/30$755
Fri 9/610:10 amLHR - STL
1 stop18h 50mFinnair
Fri 9/206:51 pmSTL - LHR
1 stop31h 14mFinnair
Deal found 5/30$763
Sat 6/1511:15 amLHR - STL
1 stop17h 43mFinnair
Sat 6/225:38 pmSTL - LHR
1 stop12h 32mFinnair
Deal found 5/30$795
Sat 10/511:40 amLHR - STL
1 stop17h 20mFinnair
Sat 10/192:38 pmSTL - LHR
1 stop10h 52mFinnair
Deal found 5/30$799
Sat 6/2912:15 pmLHR - STL
1 stop11h 42mFinnair
Sat 7/66:29 amSTL - LHR
1 stop21h 41mFinnair
Deal found 5/30$800

Cheap Virgin Atlantic flights from London to St. Louis

Explore cheap flight options specifically provided by Virgin Atlantic for the route between London and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,765,679 searches. Data last updated May 31, 2024.
Some of the lowest-priced Virgin Atlantic flights we've found at this time heading from London to St. Louis. Deals are refreshing constantly so come back soon for more options.
Thu 6/273:55 pmLHR - STL
1 stop13h 48mVirgin Atlantic
Thu 7/410:15 amSTL - LHR
2 stops14h 30mVirgin Atlantic
Deal found 5/30$1,180
Thu 6/2012:00 pmLGW - STL
2 stops17h 43mVirgin Atlantic
Wed 6/2611:25 amSTL - LGW
2 stops16h 35mVirgin Atlantic
Deal found 5/30$1,222
Fri 6/216:30 amLHR - STL
2 stops16h 31mVirgin Atlantic
Sun 7/72:16 pmSTL - LHR
2 stops12h 39mVirgin Atlantic
Deal found 5/30$1,287
Mon 7/159:20 amLHR - STL
1 stop13h 46mVirgin Atlantic
Wed 7/245:26 pmSTL - LHR
1 stop13h 49mVirgin Atlantic
Deal found 5/30$6,033

Cheap London to St. Louis flights in May & June 2024

Find cheap flight options from London to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,765,679 searches. Prices were last updated on May 31, 2024.
These are some of the most attractive deals on flights from London to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
Thu 6/2711:15 amLHR - STL
1 stop17h 43mFinnair
Thu 7/45:15 amSTL - LHR
1 stop20h 25mFinnair
Deal found 5/30$755
Thu 6/139:20 amLHR - STL
1 stop16h 02mMultiple Airlines
Sat 6/2211:34 amSTL - LHR
1 stop13h 41mMultiple Airlines
Deal found 5/30$756
Thu 6/1311:40 amLHR - STL
1 stop17h 18mFinnair
Thu 6/203:27 pmSTL - LHR
1 stop14h 43mFinnair
Deal found 5/29$757
Mon 6/1011:40 amLHR - STL
1 stop17h 18mFinnair
Sat 6/155:38 pmSTL - LHR
1 stop12h 32mFinnair
Deal found 5/29$778
Fri 6/144:55 pmLHR - STL
1 stop36h 03mFinnair
Fri 6/213:27 pmSTL - LHR
1 stop14h 43mFinnair
Deal found 5/29$794
Sat 6/1511:15 amLHR - STL
1 stop17h 43mFinnair
Sat 6/225:38 pmSTL - LHR
1 stop12h 32mFinnair
Deal found 5/30$795
Sat 6/2912:15 pmLHR - STL
1 stop11h 42mFinnair
Sat 7/66:29 amSTL - LHR
1 stop21h 41mFinnair
Deal found 5/30$800
Sat 6/2912:15 pmLHR - STL
1 stop16h 17mFinnair
Sat 7/66:29 amSTL - LHR
1 stop23h 01mFinnair
Deal found 5/29$809
Mon 6/101:00 pmLHR - STL
1 stop16h 26mFinnair
Fri 6/213:27 pmSTL - LHR
1 stop14h 43mFinnair
Deal found 5/29$827

London to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between London and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,765,679 searches. Data last updated May 31, 2024.
These are some of the most attractive deals on flights from London to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
Tue 9/1011:15 amLHR - STL
1 stop17h 45mFinnair
Wed 9/2512:48 pmSTL - LHR
1 stop14h 17mFinnair
Deal found 5/29$649
Tue 9/1012:30 pmLHR - STL
1 stop16h 51mFinnair
Tue 9/2412:48 pmSTL - LHR
1 stop14h 17mFinnair
Deal found 5/29$657
Fri 8/302:00 pmLGW - STL
1 stop26h 28mMultiple Airlines
Sat 9/2111:39 amSTL - LGW
1 stop16h 21mMultiple Airlines
Deal found 5/29$675
Thu 9/129:15 amLHR - STL
1 stop20h 38mFinnair
Mon 9/307:00 amSTL - LHR
1 stop23h 50mFinnair
Deal found 5/29$686
Thu 9/2610:10 amLHR - STL
1 stop18h 50mFinnair
Sun 9/295:35 pmSTL - LHR
1 stop33h 30mFinnair
Deal found 5/30$688
Wed 10/211:15 amLHR - STL
1 stop17h 45mFinnair
Tue 10/222:38 pmSTL - LHR
1 stop10h 52mFinnair
Deal found 5/30$720
Thu 9/511:15 amLHR - STL
1 stop17h 45mFinnair
Thu 9/2612:48 pmSTL - LHR
1 stop14h 17mFinnair
Deal found 5/30$725
Mon 8/2611:15 amLHR - STL
1 stop17h 27mFinnair
Wed 9/49:05 amSTL - LHR
1 stop16h 25mFinnair
Deal found 5/30$726
Thu 9/511:40 amLHR - STL
1 stop17h 20mFinnair
Thu 9/2612:48 pmSTL - LHR
1 stop14h 17mFinnair
Deal found 5/29$727

London to St. Louis flights leaving soon

Find last-minute flight options from London to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,765,679 searches. Data last updated May 31, 2024.
Check out these flights departing soon from London to St. Louis. Users should be sure to double check the price, date, and time of their last-minute flight.
Sat 6/88:10 amLHR - STL
1 stop12h 16mFinnair
Sat 6/85:38 pmSTL - LHR
1 stop12h 32mFinnair
Deal found 5/30$3,180
Sat 6/89:45 amLHR - STL
1 stop12h 20mAmerican Airlines
Sat 6/86:27 pmSTL - LHR
2 stops18h 28mAmerican Airlines
Deal found 5/30$3,337
Fri 6/78:10 amLHR - STL
1 stop12h 16mBritish Airways
Thu 6/136:00 amSTL - LHR
1 stop10h 10mBritish Airways
Deal found 5/30$4,361
Fri 6/76:35 amLHR - STL
2 stops21h 12mMultiple Airlines
Thu 6/135:31 pmSTL - LHR
2 stops21h 19mMultiple Airlines
Deal found 5/30$5,460
Fri 6/75:15 pmLGW - STL
2 stops28h 26mTurkish Airlines
Thu 6/135:31 pmSTL - LGW
2 stops34h 19mTurkish Airlines
Deal found 5/30$7,668
Fri 6/77:30 amLHR - STL
2 stops20h 32mFinnair
Thu 6/1312:44 pmSTL - LHR
1 stop19h 41mFinnair
Deal found 5/30$8,149
Fri 6/78:40 amLCY - STL
2 stops21h 03mKLM
Thu 6/134:02 pmSTL - LCY
2 stops19h 18mKLM
Deal found 5/30$9,186

One-way flights to St. Louis from London

Search for one-way flight options from London to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,765,679 searches. Data last updated May 31, 2024.
Take a look at some of the one-way flights we've detected from London to St. Louis. For those needing a return trip from London, there is a search form available above.
Tue 6/117:00 pmLTN - STL
3 stops52h 28mMultiple Airlines
Deal found 5/29$297
Thu 6/63:10 pmLGW - STL
3 stops49h 24mMultiple Airlines
Deal found 5/30$347
Wed 6/58:05 pmLTN - STL
3 stops41h 02mMultiple Airlines
Deal found 5/29$348
Wed 6/122:00 pmLGW - STL
1 stop23h 07mMultiple Airlines
Deal found 5/30$362
Thu 6/62:00 pmLGW - STL
1 stop23h 07mMultiple Airlines
Deal found 5/30$364
Fri 6/72:00 pmLGW - STL
1 stop26h 34mMultiple Airlines
Deal found 5/30$368
Mon 9/92:00 pmLGW - STL
1 stop14h 14mMultiple Airlines
Deal found 5/30$383
Wed 6/1210:00 pmLGW - STL
3 stops39h 07mMultiple Airlines
Deal found 5/30$392
Thu 6/67:45 amSTN - STL
3 stops32h 57mMultiple Airlines
Deal found 5/30$392

Find flights from London to St. Louis within your budget

Customize your flight search to find flights from London 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 2,765,679 searches. Data last updated May 31, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$688 - $1,180

Route

Depart

Return

Price

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 9/26

1 stop18h 50m

Lambert-St Louis

Sun 9/29

1 stop33h 30m

$688

London GatwickLambert-St Louis

LGW - STL

LGWSTL

London Gatwick

Mon 7/1

1 stop26h 57m

Lambert-St Louis

Thu 7/11

1 stop31h 11m

$731

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 11/20

2 stops15h 46m

Lambert-St Louis

Tue 11/26

1 stop10h 40m

$1,009

London GatwickLambert-St Louis

LGW - STL

LGWSTL

London Gatwick

Tue 9/10

2 stops14h 31m

Lambert-St Louis

Tue 9/24

2 stops16h 09m

$1,013

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 9/10

2 stops42h 56m

Lambert-St Louis

Tue 9/24

2 stops38h 45m

$1,017

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 9/10

1 stop15h 00m

Lambert-St Louis

Tue 9/24

1 stop12h 30m

$1,025

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 7/8

1 stop12h 51m

Lambert-St Louis

Mon 10/7

1 stop12h 30m

$1,117

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 8/27

2 stops15h 19m

Lambert-St Louis

Tue 9/10

1 stop11h 30m

$1,177

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 6/27

1 stop13h 48m

Lambert-St Louis

Thu 7/4

2 stops14h 30m

$1,180

Flights are sorted by cheapest first

Deals found on 5/30

How far ahead should I book a flight from London to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from London to St. Louis. Price data was last updated on May 24, 2024.
Booking 27 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from London to St. Louis. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their London to St. Louis flight should consider departing on Wednesday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from London to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from London 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.

Temperature and rainfall in St. Louis by month

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

STL

Temperature

32 - 80.6 °F

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 May 31, 2024.
See what other customers who have flown with Finnair, Virgin Atlantic and United Airlines from London to St. Louis have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,438 reviews
Check prices

Overall

8.0

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very good
10,438 reviews
Delta
8.0
Very good
10,438 reviews
Check prices

Overall

8.0

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

KLM
7.9
Good
1,516 reviews
Delta
8.0
Very good
10,438 reviews
Check prices

Overall

8.0

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Finnair
7.8
Good
1,372 reviews
Delta
8.0
Very good
10,438 reviews
Check prices

Overall

8.0

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Austrian Airlines
7.7
Good
1,023 reviews
Delta
8.0
Very good
10,438 reviews
Check prices

Overall

8.0

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Virgin Atlantic
7.6
Good
719 reviews
Delta
8.0
Very good
10,438 reviews
Check prices

Overall

8.0

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from London 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 London?

    If you book a flight to St. Louis from London, 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. There are 0 flights from London to Lambert-St Louis per day from 4 different airlines.

  • Can I find flights from London to St. Louis for under $700 on Cheapflights?

    Yes, there are multiple flights from London to St. Louis for under $700. The cheapest flight booked recently is on Finnair for just $688, but on average you can expect to pay $798.

  • Are there last-minute flights available from London to St. Louis for under $3,200?

    There are currently 7+ open flights from London to St. Louis within the next 7 days for less than $3,200.

  • What are the cheapest airlines flying from London to St. Louis round-trip?

    Our cheapest airline available from London to St. Louis is Finnair. Our recent data shows that you can find tickets from as low as $688 on this airline. An additional option worth looking into is American Airlines, starting at $1,009. Finnair is currently priced 11% below the average price you’ll pay for this route.

  • What are the most popular routes from London to St. Louis?

    While some choose either London Gatwick - Lambert-St Louis or London City - Lambert-St Louis, London Heathrow - Lambert-St Louis is the most popular route from London to St. Louis.

  • What does LHR to STL mean?

    This is defined as London Heathrow Airport (LHR) and Lambert-St Louis Airport (STL). Codes like Lambert-St Louis Airport are often used to just call airports uniquely. Ready for more IATA code knowledge? These are related airports for your current travel destination: London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN).

  • Can I find deals for flights from London to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your London to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from London to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter London to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from London to St. Louis that include hotel bookings?

    Yes. In addition to deals on London to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to St. Louis.

  • Can I find deals for business class flights from London to St. Louis?

    Yes. Cheapflights offers flight deals from London 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.

  • Can I find deals for flights from London to St. Louis that allow pets onboard?

    Many airlines flying from London to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from London to St. Louis?

    Yes, you can often find last-minute deals on London to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the London to St. Louis flight deals updated?

    The London to St. Louis flight deals you see on this page were last updated on 5/30.

  • What are the most popular airlines that fly from London to St. Louis?

    When booking a flight from London to St. Louis, you may want to consider flying on American Airlines, British Airways or Lufthansa as they are the most popular for this route.

  • What is the cheapest month to book a flight from London to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from London to St. Louis (average of $319). Flying from London to St. Louis in July is currently the most expensive (average of $366). 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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Alternative routes for London to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

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Top 4 airlines flying from London to St. Louis

Discover the top 4 airlines that operate flights from London 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 2,765,679 searches. Data last updated May 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$739Average$993FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest$740Average$1,099FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest$971Average$1,113FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest$987Average$1,287FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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Find flights from London to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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How does Cheapflights help users find flights from London to St. Louis?

Deals for London to St. Louis flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London to St. Louis?

Cheapflights simply makes it quick and affordable to book flights from London to St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from London to St. Louis with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to St. Louis, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from London to St. Louis become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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