Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to St. Louis from £388

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 3/6. 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.
LHR — STL
25 May — 1 Jun1
1 adult
Sat 25/5
Sat 1/6

The best prices from London Heathrow to Lambert-St Louis are usually found in November or October, booked 16 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from Heathrow to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 20 May 2024.

Popular in

August

Cheapest in

November

Average price

£603

Round-trip from

£526
High demand for flights, 23% potential price rise
Best time to find cheap flights, 17% potential price drop
Average for round-trip flights in May 2024
From London Heathrow to Lambert-St Louis

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

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to St. Louis. Check prices with Cheapflights to find a great deal for your trip.

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

Travelers have found it’s best to book a flight 28 days in advance to save up to 14% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 28 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London Heathrow Airport to St. Louis 1-2 weeks in advance for as low as £520, or £696 for flights within the next 24 hours.

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

The best pricing can be found in the month of November. Prices to St. Louis from London Heathrow Airport average £606. You can even find prices in November for less than £606, as users have found deals to St. Louis from as low as £433. The month of August appears to be one of the more expensive times to travel to St. Louis from London Heathrow Airport. Flying in the targeted month can save you up to 34%.

When is the cheapest time to fly from London Heathrow Airport to St. Louis (LHR - STL)?

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to St. Louis in the morning. If you’re flexible enough to do this you can expect to save up to 5% on your trip compared to booking a flight in the evening.

Cheap Finnair flights from Heathrow to St. Louis

Explore cheap flight options specifically provided by Finnair for the route between Heathrow 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 835,519 searches. Data last updated 20 May 2024.
Find some of the cheapest Finnair flights travelling from London to St. Louis. Make sure to double check the flight details before booking.
Thu 26/912:30LHR - STL
1 stop16h 30mFinnair
Sun 29/918:58STL - LHR
1 stop32h 07mFinnair
Deal found 19/5£606
Thu 5/912:30LHR - STL
1 stop16h 30mFinnair
Thu 26/914:38STL - LHR
1 stop10h 52mFinnair
Deal found 19/5£657
Tue 22/1011:05LHR - STL
1 stop12h 17mFinnair
Thu 31/1014:41STL - LHR
1 stop13h 39mFinnair
Deal found 19/5£661
Mon 1/709:45LHR - STL
1 stop12h 21mFinnair
Mon 8/706:04STL - LHR
1 stop10h 06mFinnair
Deal found 19/5£663
Mon 10/612:00LHR - STL
1 stop14h 24mFinnair
Sun 16/616:48STL - LHR
1 stop32h 57mFinnair
Deal found 19/5£664
Mon 24/612:30LHR - STL
1 stop27h 55mFinnair
Sun 7/718:09STL - LHR
1 stop22h 01mFinnair
Deal found 19/5£668
Mon 3/613:00LHR - STL
1 stop13h 55mFinnair
Mon 10/614:56STL - LHR
1 stop10h 54mFinnair
Deal found 19/5£672
Thu 27/612:30LHR - STL
1 stop14h 26mFinnair
Wed 24/718:09STL - LHR
1 stop10h 11mFinnair
Deal found 19/5£690
Thu 11/712:30LHR - STL
1 stop14h 19mFinnair
Thu 25/717:30STL - LHR
1 stop14h 55mFinnair
Deal found 19/5£691

Cheap Air Canada flights from Heathrow to St. Louis

Explore cheap flight options specifically provided by Air Canada for the route between Heathrow 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 835,519 searches. Data last updated 20 May 2024.
Have a look at some of the cheapest available Air Canada flights departing from London and landing in St. Louis. Make sure to examine the flight information before completing your reservation.
Thu 26/912:40LHR - STL
2 stops14h 25mAir Canada
Sun 29/912:00STL - LHR
2 stops27h 00mAir Canada
Deal found 19/5£850
Mon 24/609:30LHR - STL
2 stops16h 31mAir Canada
Mon 8/716:05STL - LHR
1 stop10h 30mAir Canada
Deal found 19/5£913
Fri 25/1014:05LHR - STL
1 stop13h 00mAir Canada
Sat 2/1116:10STL - LHR
2 stops47h 25mAir Canada
Deal found 19/5£915
Mon 14/1014:05LHR - STL
1 stop13h 00mAir Canada
Thu 31/1010:40STL - LHR
1 stop14h 50mAir Canada
Deal found 19/5£920
Mon 24/609:30LHR - STL
2 stops16h 31mAir Canada
Fri 5/712:00STL - LHR
1 stop12h 30mAir Canada
Deal found 19/5£927
Tue 11/609:30LHR - STL
1 stop17h 35mAir Canada
Tue 18/609:50STL - LHR
1 stop14h 40mAir Canada
Deal found 19/5£938
Fri 28/608:30LHR - STL
1 stop12h 51mAir Canada
Sun 30/611:00STL - LHR
2 stops13h 30mAir Canada
Deal found 19/5£990
Mon 22/708:30LHR - STL
1 stop12h 51mAir Canada
Sun 28/716:05STL - LHR
2 stops32h 25mAir Canada
Deal found 19/5£1,144
Tue 28/509:30LHR - STL
2 stops16h 31mAir Canada
Thu 30/510:15STL - LHR
2 stops14h 20mAir Canada
Deal found 20/5£1,680

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

Find cheap flight options from Heathrow 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 835,519 searches. Prices were last updated on 20 May 2024.
These are some of the most attractive deals on flights from London to St. Louis in 2024. For more flight deals, be sure to check back very soon.
Mon 10/612:00LHR - STL
1 stop14h 24mFinnair
Sun 16/616:48STL - LHR
1 stop32h 57mFinnair
Deal found 19/5£664
Mon 24/612:30LHR - STL
1 stop27h 55mFinnair
Sun 7/718:09STL - LHR
1 stop22h 01mFinnair
Deal found 19/5£668
Mon 3/613:00LHR - STL
1 stop13h 55mFinnair
Mon 10/614:56STL - LHR
1 stop10h 54mFinnair
Deal found 19/5£672
Thu 27/612:30LHR - STL
1 stop14h 26mFinnair
Wed 24/718:09STL - LHR
1 stop10h 11mFinnair
Deal found 19/5£690
Mon 24/612:00LHR - STL
1 stop14h 24mFinnair
Fri 5/716:52STL - LHR
1 stop11h 38mFinnair
Deal found 19/5£692
Thu 20/609:45LHR - STL
1 stop12h 21mFinnair
Thu 27/606:00STL - LHR
1 stop10h 10mFinnair
Deal found 19/5£694
Mon 3/610:05LHR - STL
1 stop12h 12mFinnair
Sat 15/612:56STL - LHR
1 stop12h 49mFinnair
Deal found 19/5£697
Mon 10/610:05LHR - STL
1 stop13h 13mFinnair
Fri 14/612:56STL - LHR
1 stop15h 34mFinnair
Deal found 19/5£707
Wed 19/617:00LHR - STL
1 stop23h 42mMultiple Airlines
Wed 26/613:55STL - LHR
1 stop19h 40mMultiple Airlines
Deal found 19/5£761

Heathrow to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Heathrow and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 835,519 searches. Data last updated 20 May 2024.
These are some of the most attractive deals on flights from London to St. Louis in 2024. For more flight deals, be sure to check back very soon.
Mon 28/1012:35LHR - STL
1 stop15h 36mFinnair
Mon 4/1114:43STL - LHR
1 stop15h 07mFinnair
Deal found 20/5£573
Thu 26/912:30LHR - STL
1 stop16h 30mFinnair
Sun 29/918:58STL - LHR
1 stop32h 07mFinnair
Deal found 19/5£606
Thu 26/914:10LHR - STL
1 stop14h 50mFinnair
Sun 29/918:58STL - LHR
1 stop32h 07mFinnair
Deal found 20/5£616
Thu 5/912:30LHR - STL
1 stop16h 30mFinnair
Thu 26/914:38STL - LHR
1 stop10h 52mFinnair
Deal found 19/5£657
Tue 22/1011:05LHR - STL
1 stop12h 17mFinnair
Thu 31/1014:41STL - LHR
1 stop13h 39mFinnair
Deal found 19/5£661
Mon 1/709:45LHR - STL
1 stop12h 21mFinnair
Mon 8/706:04STL - LHR
1 stop10h 06mFinnair
Deal found 19/5£663
Mon 10/612:00LHR - STL
1 stop14h 24mFinnair
Sun 16/616:48STL - LHR
1 stop32h 57mFinnair
Deal found 19/5£664
Mon 24/612:30LHR - STL
1 stop27h 55mFinnair
Sun 7/718:09STL - LHR
1 stop22h 01mFinnair
Deal found 19/5£668
Mon 3/613:00LHR - STL
1 stop13h 55mFinnair
Mon 10/614:56STL - LHR
1 stop10h 54mFinnair
Deal found 19/5£672

Heathrow to St. Louis flights leaving soon

Find last-minute flight options from Heathrow 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 835,519 searches. Data last updated 20 May 2024.
Check out these flights departing soon from London to St. Louis. To prevent any unwanted surprises, users should verify their flight info before booking.
Sun 26/508:40LHR - STL
1 stop14h 42mFinnair
Fri 31/506:40STL - LHR
1 stop19h 05mFinnair
Deal found 19/5£820
Mon 27/513:00LHR - STL
1 stop13h 55mFinnair
Fri 31/505:55STL - LHR
1 stop10h 15mFinnair
Deal found 19/5£841
Tue 28/509:15LHR - STL
1 stop12h 13mFinnair
Thu 30/516:48STL - LHR
1 stop34h 37mFinnair
Deal found 20/5£901
Mon 27/516:10LHR - STL
2 stops35h 37mFinnair
Fri 31/517:08STL - LHR
1 stop23h 02mFinnair
Deal found 19/5£1,107
Tue 28/511:30LHR - STL
2 stops29h 16mMultiple Airlines
Thu 30/519:30STL - LHR
3 stops32h 30mMultiple Airlines
Deal found 20/5£1,109
Sun 26/516:35LHR - STL
2 stops29h 42mFinnair
Fri 31/515:00STL - LHR
1 stop10h 50mFinnair
Deal found 19/5£1,153
Mon 27/510:30LHR - STL
1 stop18h 49mAmerican Airlines
Sat 1/616:20STL - LHR
1 stop33h 10mAmerican Airlines
Deal found 19/5£1,218
Sun 26/508:20LHR - STL
2 stops21h 20mKLM
Fri 31/509:59STL - LHR
2 stops18h 31mKLM
Deal found 19/5£1,270
Tue 28/516:35LHR - STL
2 stops28h 00mFinnair
Thu 30/513:40STL - LHR
1 stop23h 05mFinnair
Deal found 20/5£1,271

One-way flights to St. Louis from Heathrow

Search for one-way flight options from Heathrow 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 835,519 searches. Data last updated 20 May 2024.
Take a look at some of the best available options we've come across on one-way flights from London to St. Louis. Users can also find round-trip London to St. Louis flights by using the search form above.
Mon 3/614:30LHR - STL
3 stops29h 07mMultiple Airlines
Deal found 19/5£388
Sun 15/922:00LHR - STL
3 stops42h 18mMultiple Airlines
Deal found 19/5£457
Thu 27/619:45LHR - STL
3 stops44h 49mMultiple Airlines
Deal found 19/5£483
Fri 30/806:15LHR - STL
3 stops34h 13mMultiple Airlines
Deal found 19/5£490
Mon 9/921:25LHR - STL
3 stops42h 53mMultiple Airlines
Deal found 19/5£508
Wed 11/920:15LHR - STL
3 stops28h 06mMultiple Airlines
Deal found 19/5£525
Fri 30/806:45LHR - STL
2 stops19h 16mMultiple Airlines
Deal found 19/5£531
Tue 10/906:00LHR - STL
3 stops23h 35mMultiple Airlines
Deal found 19/5£553
Mon 9/922:30LHR - STL
2 stops25h 14mMultiple Airlines
Deal found 19/5£572

Find flights from Heathrow to St. Louis within your budget

Customise your flight search to find flights from Heathrow 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 835,519 searches. Data last updated 20 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£606 - £931

Route

Depart

Return

Price

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 26/9

1 stop16h 30m

Lambert-St Louis

Sun 29/9

1 stop32h 07m

£606

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 5/9

1 stop16h 30m

Lambert-St Louis

Thu 26/9

1 stop10h 52m

£657

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 5/9

2 stops22h 59m

Lambert-St Louis

Thu 26/9

2 stops23h 49m

£757

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 26/9

2 stops14h 25m

Lambert-St Louis

Sun 29/9

2 stops27h 00m

£850

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 23/10

1 stop13h 00m

Lambert-St Louis

Tue 29/10

1 stop11h 35m

£917

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 18/6

2 stops14h 51m

Lambert-St Louis

Tue 25/6

1 stop17h 25m

£919

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 25/6

1 stop14h 27m

Lambert-St Louis

Mon 8/7

2 stops15h 39m

£926

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 22/10

1 stop17h 02m

Lambert-St Louis

Wed 30/10

1 stop11h 57m

£927

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/6

2 stops18h 00m

Lambert-St Louis

Mon 8/7

2 stops15h 32m

£931

Flights are sorted by cheapest first

Deals found on 19/5

When is the best time to book a flight from London Heathrow Airport to St. Louis?

Use this chart to determine the optimal time to book a return flight from Heathrow to St. Louis. Price data was last updated on 10 May 2024.
To ensure you get the cheapest price possible for a flight from London Heathrow Airport to St. Louis, you should look to book at least 16 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Search Deals

When is the cheapest time to fly from London Heathrow Airport to St. Louis?

Use this chart to determine the cheapest time to fly return from Heathrow to St. Louis. Price data was last updated on 12 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their London Heathrow Airport to St. Louis flight should consider departing on Tuesday evenings 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.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Heathrow to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Heathrow to St. Louis is currently £501 while a return flight costs £832. Price data was last updated on 12 May 2024.

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to St. Louis (average of £668). Flying from London Heathrow Airport to St. Louis in August is currently the most expensive (average of £852). 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.

January

£570

February

£545

March

£556

April

£564

May

£587

June

£646

July

£608

August

£671

September

£549

October

£542

November

£526

December

£549

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

0 - 27 °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 20 May 2024.
To help decide which airline to fly from London to St. Louis, see what other customers have to say about Finnair, Air Canada and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very Good
10,615 reviews

Overall

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

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.

8.0
Very Good
10,615 reviews
8.0
Very Good
10,615 reviews

Overall

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

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.

7.9
Good
1,558 reviews
8.0
Very Good
10,615 reviews

Overall

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

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.

7.8
Good
1,373 reviews
8.0
Very Good
10,615 reviews

Overall

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

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.

7.7
Good
730 reviews
8.0
Very Good
10,615 reviews

Overall

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

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.

7.7
Good
1,046 reviews
8.0
Very Good
10,615 reviews

Overall

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

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 Heathrow 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 Heathrow?

    For a flight from London Heathrow to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 inbound flights from London Heathrow per day. 9 airlines have flights to Lambert-St Louis from London Heathrow on a regular basis.

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

    Yes, there are multiple flights from London Heathrow Airport to St. Louis for under £700. The cheapest flight booked recently is on Finnair for just £606, but on average you can expect to pay £706.

  • Are there last-minute flights available from London Heathrow Airport to St. Louis for under £900?

    There are currently 20+ open flights from London Heathrow Airport to St. Louis within the next 7 days for less than £900.

  • What is the cheapest airline to fly from London Heathrow Airport to St. Louis round-trip?

    Cheapflights users have booked flights from London Heathrow Airport to St. Louis round-trip from £606. Finnair is priced at 1% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from London Heathrow Airport to St. Louis one-way?

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as £657. Users have also found prices from £663 and £894 on Finnair and Turkish Airlines, respectively.

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

  • What does LHR to STL mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a London Heathrow Airport to Lambert-St Louis Airport flight would often be abbreviated as a LHR to STL flight.

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

    The amount of baggage you can bring on your Heathrow 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 Heathrow to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Heathrow 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 Heathrow to St. Louis that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow to St. Louis that allow pets onboard?

    Many airlines flying from Heathrow 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 Heathrow to St. Louis?

    Yes, you can often find last-minute deals on Heathrow 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 Heathrow Airport to St. Louis flight deals updated?

    The London Heathrow Airport to St. Louis flight deals you see on this page were last updated on 20/5.

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 9 airlines flying from Heathrow to St. Louis

Discover the top 9 airlines that operate flights from Heathrow 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 835,519 searches. Data last updated 20 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£464Average£819FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£465Average£798FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£470Average£577FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£471Average£850FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£527Average£832FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IberiaCheapest£558Average£715FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£621Average£949FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest£632Average£840FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£763Average£921FlexibilityNo cancel feeOn-time75%
Search KLM flights

Search flights from Heathrow to St. Louis by cabin class

Find flights from Heathrow to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

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 Heathrow to St. Louis?

Cheapflights makes it easy to find Heathrow 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 Heathrow to St. Louis?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to St. Louis from Heathrow.

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

Certainly. Search results for flights to St. Louis from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Heathrow to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.