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Cheap flights from London Heathrow Airport to St. Louis from £371

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 12/6. 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
6 Jun — 13 Jun1
1 adult
Thu 6/6
Thu 13/6

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 1 June 2024.

Popular in

August

Cheapest in

November

Average price

£647

Round-trip from

£523
High demand for flights, 27% potential price rise
Search Deals
Best time to find cheap flights, 18% potential price drop
Search Deals
Average for round-trip flights in June 2024
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From London Heathrow to Lambert-St Louis
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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 £519, or £697 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 £608. You can even find prices in November for less than £608, as users have found deals to St. Louis from as low as £432. 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 32%.

What is the cheapest time of day to fly from LHR to 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 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 909,873 searches. Data last updated 1 June 2024.
Find some of the cheapest Air Canada flights travelling from London to St. Louis. Make sure to double check the flight details before booking.
Fri 25/1014:05LHR - STL
1 stop13h 00mAir Canada
Sat 2/1116:10STL - LHR
2 stops47h 25mAir Canada
Deal found 31/5£914
Sun 30/609:30LHR - STL
2 stops16h 31mAir Canada
Sun 7/716:05STL - LHR
2 stops32h 25mAir Canada
Deal found 31/5£947
Mon 8/718:00LHR - STL
2 stops26h 18mAir Canada
Wed 24/710:19STL - LHR
2 stops17h 41mAir Canada
Deal found 31/5£948
Tue 2/709:30LHR - STL
2 stops16h 31mAir Canada
Sun 14/710:10STL - LHR
2 stops14h 20mAir Canada
Deal found 31/5£968
Thu 25/708:30LHR - STL
1 stop12h 51mAir Canada
Sun 4/510:10STL - LHR
2 stops14h 20mAir Canada
Deal found 31/5£1,159
Sun 9/612:05LHR - STL
1 stop15h 00mAir Canada
Fri 14/609:50STL - LHR
1 stop14h 40mAir Canada
Deal found 31/5£1,678

Cheap United Airlines flights from Heathrow to St. Louis

Explore cheap flight options specifically provided by United Airlines 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 909,873 searches. Data last updated 1 June 2024.
Have a look at some of the cheapest available United Airlines flights departing from London and landing in St. Louis. Make sure to examine the flight information before completing your reservation.
Tue 1/1006:50LHR - STL
2 stops13h 58mUnited Airlines
Thu 24/1010:00STL - LHR
2 stops15h 15mUnited Airlines
Deal found 31/5£918
Mon 1/706:30LHR - STL
2 stops15h 10mUnited Airlines
Thu 11/710:19STL - LHR
2 stops14h 26mUnited Airlines
Deal found 1/6£921
Tue 25/606:50LHR - STL
2 stops14h 51mUnited Airlines
Tue 2/710:19STL - LHR
2 stops14h 26mUnited Airlines
Deal found 31/5£932
Tue 25/606:50LHR - STL
2 stops14h 51mUnited Airlines
Wed 10/708:58STL - LHR
1 stop16h 42mUnited Airlines
Deal found 31/5£941
Tue 2/706:30LHR - STL
2 stops15h 10mUnited Airlines
Sun 14/710:19STL - LHR
2 stops14h 01mUnited Airlines
Deal found 1/6£951
Thu 27/606:50LHR - STL
2 stops14h 50mUnited Airlines
Thu 4/711:25STL - LHR
1 stop18h 20mUnited Airlines
Deal found 31/5£962
Thu 27/606:50LHR - STL
2 stops14h 50mUnited Airlines
Thu 4/713:04STL - LHR
1 stop15h 36mUnited Airlines
Deal found 1/6£963
Fri 5/708:30LHR - STL
2 stops14h 42mUnited Airlines
Fri 12/710:19STL - LHR
2 stops14h 51mUnited Airlines
Deal found 31/5£991
Sat 15/606:50LHR - STL
2 stops14h 51mUnited Airlines
Sat 22/613:42STL - LHR
1 stop13h 58mUnited Airlines
Deal found 31/5£992

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

Find cheap flight options from Heathrow to St. Louis specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 909,873 searches. Prices were last updated on 1 June 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 10/611:40LHR - STL
1 stop17h 18mFinnair
Sun 16/618:08STL - LHR
1 stop22h 02mFinnair
Deal found 1/6£566
Mon 10/611:40LHR - STL
1 stop17h 18mFinnair
Sun 23/617:38STL - LHR
1 stop33h 27mFinnair
Deal found 31/5£566
Tue 11/610:10LHR - STL
1 stop18h 48mFinnair
Fri 21/615:27STL - LHR
1 stop14h 43mFinnair
Deal found 31/5£595
Wed 19/611:40LHR - STL
1 stop17h 18mFinnair
Sat 29/609:44STL - LHR
1 stop16h 21mFinnair
Deal found 1/6£599
Thu 27/611:15LHR - STL
1 stop17h 43mFinnair
Wed 10/707:03STL - LHR
1 stop18h 27mFinnair
Deal found 31/5£601
Fri 14/616:55LHR - STL
1 stop36h 03mFinnair
Sat 22/615:27STL - LHR
1 stop14h 43mFinnair
Deal found 31/5£620
Sat 15/610:05LHR - STL
1 stop30h 27mFinnair
Sat 22/606:29STL - LHR
1 stop24h 21mFinnair
Deal found 31/5£625
Fri 28/611:15LHR - STL
1 stop17h 43mFinnair
Fri 5/707:03STL - LHR
1 stop20h 02mFinnair
Deal found 31/5£628
Thu 13/613:00LHR - STL
1 stop16h 26mFinnair
Thu 20/609:23STL - LHR
1 stop17h 42mFinnair
Deal found 1/6£668

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 909,873 searches. Data last updated 1 June 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.
Thu 26/911:15LHR - STL
1 stop17h 45mFinnair
Sun 29/918:14STL - LHR
1 stop21h 56mFinnair
Deal found 1/6£547
Mon 10/611:40LHR - STL
1 stop17h 18mFinnair
Sun 16/618:08STL - LHR
1 stop22h 02mFinnair
Deal found 1/6£566
Mon 10/611:40LHR - STL
1 stop17h 18mFinnair
Sun 23/617:38STL - LHR
1 stop33h 27mFinnair
Deal found 31/5£566
Mon 8/720:35LHR - STL
2 stops31h 19mFinnair
Wed 24/706:29STL - LHR
1 stop23h 01mFinnair
Deal found 31/5£571
Tue 1/1011:15LHR - STL
1 stop17h 45mFinnair
Thu 24/1011:08STL - LHR
1 stop15h 57mFinnair
Deal found 31/5£575
Thu 5/910:10LHR - STL
1 stop18h 50mFinnair
Thu 26/916:51STL - LHR
1 stop11h 59mFinnair
Deal found 1/6£576
Tue 11/610:10LHR - STL
1 stop18h 48mFinnair
Fri 21/615:27STL - LHR
1 stop14h 43mFinnair
Deal found 31/5£595
Mon 8/712:15LHR - STL
1 stop31h 01mFinnair
Wed 24/706:29STL - LHR
1 stop20h 31mFinnair
Deal found 31/5£595
Wed 19/611:40LHR - STL
1 stop17h 18mFinnair
Sat 29/609:44STL - LHR
1 stop16h 21mFinnair
Deal found 1/6£599

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 909,873 searches. Data last updated 1 June 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.
Mon 10/611:40LHR - STL
1 stop17h 18mFinnair
Sun 16/618:08STL - LHR
1 stop22h 02mFinnair
Deal found 1/6£566
Mon 10/611:40LHR - STL
1 stop17h 18mFinnair
Sun 23/617:38STL - LHR
1 stop33h 27mFinnair
Deal found 31/5£566
Tue 11/610:10LHR - STL
1 stop18h 48mFinnair
Fri 21/615:27STL - LHR
1 stop14h 43mFinnair
Deal found 31/5£595
Sat 8/614:10LHR - STL
1 stop15h 16mFinnair
Sat 15/618:27STL - LHR
1 stop9h 53mFinnair
Deal found 31/5£701
Mon 10/614:05LHR - STL
3 stops32h 10mMultiple Airlines
Sun 23/615:55STL - LHR
3 stops32h 40mMultiple Airlines
Deal found 31/5£716
Sat 8/615:15LHR - STL
2 stops31h 17mMultiple Airlines
Sat 15/611:34STL - LHR
1 stop15h 41mMultiple Airlines
Deal found 31/5£734
Mon 10/606:00LHR - STL
3 stops35h 45mMultiple Airlines
Sun 16/612:45STL - LHR
3 stops35h 50mMultiple Airlines
Deal found 1/6£738
Mon 10/615:15LHR - STL
2 stops29h 08mMultiple Airlines
Sun 23/618:15STL - LHR
2 stops33h 00mMultiple Airlines
Deal found 31/5£757
Sat 8/613:05LHR - STL
3 stops28h 40mMultiple Airlines
Sat 15/612:15STL - LHR
3 stops17h 40mMultiple Airlines
Deal found 31/5£796

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 909,873 searches. Data last updated 1 June 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.
Wed 12/613:45LHR - STL
3 stops35h 37mMultiple Airlines
Deal found 31/5£371
Wed 12/613:45LHR - STL
3 stops35h 37mMultiple Airlines
Deal found 1/6£397
Sat 31/807:40LHR - STL
3 stops29h 22mMultiple Airlines
Deal found 31/5£398
Fri 19/714:00LHR - STL
3 stops33h 29mMultiple Airlines
Deal found 31/5£413
Thu 6/620:35LHR - STL
3 stops43h 59mMultiple Airlines
Deal found 31/5£460
Sun 23/621:40LHR - STL
3 stops39h 27mMultiple Airlines
Deal found 1/6£493
Thu 1/809:50LHR - STL
3 stops28h 46mMultiple Airlines
Deal found 31/5£496
Wed 12/619:30LHR - STL
2 stops45h 12mMultiple Airlines
Deal found 31/5£507
Mon 9/921:35LHR - STL
3 stops42h 43mMultiple Airlines
Deal found 1/6£512

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 909,873 searches. Data last updated 1 June 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£547 - £1,009

Route

Depart

Return

Price

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 26/9

1 stop17h 45m

Lambert-St Louis

Sun 29/9

1 stop21h 56m

£547

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 20/11

2 stops15h 46m

Lambert-St Louis

Tue 26/11

1 stop10h 40m

£789

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 20/11

1 stop13h 25m

Lambert-St Louis

Tue 26/11

1 stop11h 38m

£796

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 20/11

2 stops28h 23m

Lambert-St Louis

Tue 26/11

2 stops33h 00m

£803

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Sun 29/9

2 stops43h 02m

Lambert-St Louis

Sat 15/3

2 stops39h 13m

£896

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 5/9

2 stops19h 33m

Lambert-St Louis

Thu 26/9

2 stops14h 20m

£901

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Fri 25/10

1 stop13h 00m

Lambert-St Louis

Sat 2/11

2 stops47h 25m

£914

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 1/10

2 stops13h 58m

Lambert-St Louis

Thu 24/10

2 stops15h 15m

£918

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Fri 21/6

2 stops16h 31m

Lambert-St Louis

Sun 7/7

2 stops12h 39m

£1,009

Flights are sorted by cheapest first

Deals found on 1/6

How far ahead should I 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 24 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.
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What is the cheapest day 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 26 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

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

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

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 1 June 2024.
To help decide which airline to fly from London to St. Louis, see what other customers have to say about Air Canada, United Airlines and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
10,410 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

Overall

8.0

Boarding

8.2

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
10,410 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

Overall

8.0

Boarding

8.2

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
1,368 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

Overall

8.0

Boarding

8.2

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
1,016 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

Overall

8.0

Boarding

8.2

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
720 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

Overall

8.0

Boarding

8.2

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.

Air France
7.5
Good
1,729 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

Overall

8.0

Boarding

8.2

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 £600 on Cheapflights?

    Yes, there are multiple flights from London Heathrow Airport to St. Louis for under £600. The cheapest flight booked recently is on Finnair for just £547, but on average you can expect to pay £618.

  • Are there last-minute flights available from London Heathrow Airport to St. Louis for under £600?

    There are currently 20+ open flights from London Heathrow Airport to St. Louis within the next 7 days for less than £600.

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

    Cheapflights users have booked flights from London Heathrow Airport to St. Louis round-trip from £547. Other airlines that can offer you cheap pricing are American Airlines, from £789, and Lufthansa, from £796. Finnair is priced at 12% lower than the current average price of a flight leaving 3 months from now.

  • 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 1/6.

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

    Before booking your flight from London Heathrow Airport to St. Louis check out the most popular airlines for this route: American Airlines, Air Canada or Finnair.

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

    Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to St. Louis (average of £666). 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.

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 909,873 searches. Data last updated 1 June 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£463Average£817FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£464Average£772FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£469Average£577FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£470Average£848FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£526Average£830FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IberiaCheapest£557Average£737FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£620Average£947FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest£632Average£838FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£761Average£919FlexibilityNo cancel feeOn-time75%
Search KLM flights
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Find flights from Heathrow to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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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.

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