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Cheap flights from London Heathrow Airport to St. Louis from £257

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 27/5. 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 Apr — 2 May1
1 adult
Thu 25/4
Thu 2/5

The best prices from London Heathrow to Lambert-St Louis are usually found in February or May, booked 10 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 April 2024.

Popular in

August

Cheapest in

February

Average price

£582

Round-trip from

£537
High demand for flights, 22% potential price rise
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Best time to find cheap flights, 12% potential price drop
Search Deals
Average for round-trip flights in April 2024
Search Deals
From London Heathrow to Lambert-St Louis
Search Deals

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 3% 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 £510, or £588 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 February. Prices to St. Louis from London Heathrow Airport average £599. You can even find prices in February for less than £599, as users have found deals to St. Louis from as low as £428. 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 30%.

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 6% 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 899,432 searches. Data last updated 20 April 2024.
Find some of the cheapest Finnair flights travelling from London to St. Louis. Make sure to double check the flight details before booking.
Wed 1/512:30LHR - STL
1 stop16h 56mFinnair
Fri 17/514:00STL - LHR
1 stop11h 30mFinnair
Deal found 19/4£617
Wed 8/514:10LHR - STL
1 stop15h 09mFinnair
Sat 18/516:20STL - LHR
1 stop10h 45mFinnair
Deal found 19/4£622
Thu 9/512:30LHR - STL
1 stop16h 49mFinnair
Sat 18/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 19/4£652
Thu 5/912:30LHR - STL
1 stop16h 30mFinnair
Thu 26/914:38STL - LHR
1 stop15h 32mFinnair
Deal found 19/4£661
Wed 22/513:00LHR - STL
1 stop13h 55mFinnair
Wed 29/511:09STL - LHR
1 stop14h 46mFinnair
Deal found 19/4£668
Mon 3/610:05LHR - STL
1 stop15h 23mFinnair
Mon 10/612:56STL - LHR
1 stop12h 49mFinnair
Deal found 19/4£678
Wed 2/1008:40LHR - STL
1 stop15h 41mFinnair
Thu 10/1009:19STL - LHR
1 stop16h 26mFinnair
Deal found 19/4£682
Tue 2/712:30LHR - STL
1 stop14h 26mFinnair
Thu 11/718:13STL - LHR
1 stop10h 57mFinnair
Deal found 18/4£683
Sun 19/513:00LHR - STL
1 stop13h 55mFinnair
Sun 26/517:08STL - LHR
1 stop23h 02mFinnair
Deal found 19/4£694

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 899,432 searches. Data last updated 20 April 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 7/514:10LHR - STL
2 stops30h 13mUnited Airlines
Tue 14/513:00STL - LHR
1 stop11h 45mUnited Airlines
Deal found 18/4£818
Tue 7/506:50LHR - STL
2 stops14h 56mUnited Airlines
Tue 14/510:10STL - LHR
2 stops14h 10mUnited Airlines
Deal found 18/4£827
Sat 4/509:30LHR - STL
1 stop17h 35mUnited Airlines
Sat 11/506:19STL - LHR
1 stop19h 21mUnited Airlines
Deal found 19/4£885
Wed 22/506:30LHR - STL
1 stop13h 00mUnited Airlines
Wed 29/510:15STL - LHR
2 stops14h 30mUnited Airlines
Deal found 19/4£921
Wed 22/506:50LHR - STL
2 stops14h 56mUnited Airlines
Wed 29/508:25STL - LHR
2 stops15h 55mUnited Airlines
Deal found 19/4£924
Tue 2/708:30LHR - STL
1 stop14h 42mUnited Airlines
Wed 10/715:10STL - LHR
2 stops13h 30mUnited Airlines
Deal found 18/4£932
Mon 14/1008:30LHR - STL
1 stop12h 18mUnited Airlines
Thu 31/1013:27STL - LHR
1 stop11h 28mUnited Airlines
Deal found 19/4£933
Fri 7/606:50LHR - STL
2 stops14h 49mUnited Airlines
Thu 20/606:15STL - LHR
1 stop23h 20mUnited Airlines
Deal found 19/4£954
Sat 25/512:15LHR - STL
1 stop13h 04mUnited Airlines
Sat 22/617:25STL - LHR
1 stop10h 45mUnited Airlines
Deal found 19/4£993

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

Find cheap flight options from Heathrow to St. Louis specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 899,432 searches. Prices were last updated on 20 April 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.
Tue 23/414:10LHR - STL
1 stop15h 16mFinnair
Fri 26/416:41STL - LHR
1 stop13h 29mFinnair
Deal found 19/4£545
Tue 23/414:10LHR - STL
1 stop15h 16mFinnair
Wed 8/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 20/4£553
Tue 23/414:10LHR - STL
1 stop15h 16mFinnair
Wed 8/516:20STL - LHR
1 stop13h 50mFinnair
Deal found 19/4£556
Wed 1/514:10LHR - STL
1 stop15h 16mFinnair
Fri 17/514:00STL - LHR
1 stop11h 30mFinnair
Deal found 20/4£615
Wed 1/512:30LHR - STL
1 stop16h 56mFinnair
Fri 17/514:00STL - LHR
1 stop11h 30mFinnair
Deal found 19/4£617
Wed 8/514:10LHR - STL
1 stop15h 09mFinnair
Sat 18/516:20STL - LHR
1 stop10h 45mFinnair
Deal found 19/4£622
Thu 9/512:30LHR - STL
1 stop16h 49mFinnair
Sat 18/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 19/4£652
Wed 22/513:00LHR - STL
1 stop13h 55mFinnair
Wed 29/511:09STL - LHR
1 stop14h 46mFinnair
Deal found 19/4£668
Sun 19/513:00LHR - STL
1 stop13h 55mFinnair
Sun 26/517:08STL - LHR
1 stop23h 02mFinnair
Deal found 19/4£694

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 899,432 searches. Data last updated 20 April 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.
Tue 23/414:10LHR - STL
1 stop15h 16mFinnair
Fri 26/416:41STL - LHR
1 stop13h 29mFinnair
Deal found 19/4£545
Tue 23/414:10LHR - STL
1 stop15h 16mFinnair
Wed 8/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 20/4£553
Tue 23/414:10LHR - STL
1 stop15h 16mFinnair
Wed 8/516:20STL - LHR
1 stop13h 50mFinnair
Deal found 19/4£556
Wed 1/514:10LHR - STL
1 stop15h 16mFinnair
Fri 17/514:00STL - LHR
1 stop11h 30mFinnair
Deal found 20/4£615
Wed 1/512:30LHR - STL
1 stop16h 56mFinnair
Fri 17/514:00STL - LHR
1 stop11h 30mFinnair
Deal found 19/4£617
Wed 8/514:10LHR - STL
1 stop15h 09mFinnair
Sat 18/516:20STL - LHR
1 stop10h 45mFinnair
Deal found 19/4£622
Thu 9/512:30LHR - STL
1 stop16h 49mFinnair
Sat 18/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 19/4£652
Thu 5/912:30LHR - STL
1 stop16h 30mFinnair
Thu 26/914:38STL - LHR
1 stop15h 32mFinnair
Deal found 19/4£661
Wed 22/513:00LHR - STL
1 stop13h 55mFinnair
Wed 29/511:09STL - LHR
1 stop14h 46mFinnair
Deal found 19/4£668

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 899,432 searches. Data last updated 20 April 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.
Sat 27/408:30LHR - STL
1 stop13h 31mAir Canada
Tue 2/712:00STL - LHR
1 stop16h 00mAir Canada
Deal found 19/4£999
Sat 27/408:30LHR - STL
1 stop13h 31mAir Canada
Wed 3/710:10STL - LHR
1 stop14h 25mAir Canada
Deal found 19/4£1,003
Sat 27/409:15LHR - STL
1 stop12h 34mAmerican Airlines
Sun 30/617:38STL - LHR
1 stop32h 02mAmerican Airlines
Deal found 19/4£1,015
Sat 27/414:25LHR - STL
1 stop12h 04mBritish Airways
Thu 27/606:00STL - LHR
1 stop10h 10mBritish Airways
Deal found 19/4£1,016
Sat 27/408:30LHR - STL
1 stop13h 31mAir Canada
Sun 30/616:05STL - LHR
1 stop32h 30mAir Canada
Deal found 19/4£1,021
Sat 27/408:30LHR - STL
1 stop13h 31mMultiple Airlines
Thu 27/611:00STL - LHR
2 stops15h 40mMultiple Airlines
Deal found 19/4£1,024
Sat 27/409:30LHR - STL
2 stops16h 24mUnited Airlines
Sun 30/615:10STL - LHR
2 stops13h 30mUnited Airlines
Deal found 19/4£1,030
Sat 27/406:30LHR - STL
2 stops20h 47mDelta
Sun 30/607:15STL - LHR
2 stops17h 30mDelta
Deal found 19/4£1,033
Sat 27/408:30LHR - STL
1 stop13h 16mUnited Airlines
Sat 29/615:43STL - LHR
1 stop10h 47mUnited Airlines
Deal found 19/4£1,036

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 899,432 searches. Data last updated 20 April 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 27/510:35LHR - STL
3 stops54h 11mMultiple Airlines
Deal found 19/4£257
Wed 15/520:15LHR - STL
3 stops40h 53mMultiple Airlines
Deal found 19/4£363
Wed 22/521:10LHR - STL
3 stops39h 58mMultiple Airlines
Deal found 19/4£365
Mon 19/821:35LHR - STL
3 stops42h 43mMultiple Airlines
Deal found 18/4£441
Sun 15/922:00LHR - STL
3 stops31h 35mMultiple Airlines
Deal found 19/4£495
Fri 17/522:25LHR - STL
3 stops38h 43mMultiple Airlines
Deal found 19/4£509
Wed 15/521:25LHR - STL
2 stops39h 43mMultiple Airlines
Deal found 19/4£523
Wed 15/521:25LHR - STL
2 stops39h 43mMultiple Airlines
Deal found 19/4£526
Wed 21/806:40LHR - STL
3 stops20h 55mMultiple Airlines
Deal found 18/4£549

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 899,432 searches. Data last updated 20 April 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£617 - £900

Route

Depart

Return

Price

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 1/5

1 stop16h 56m

Lambert-St Louis

Fri 17/5

1 stop11h 30m

£617

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 8/5

1 stop15h 09m

Lambert-St Louis

Sat 18/5

1 stop10h 45m

£622

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 5/9

1 stop16h 26m

Lambert-St Louis

Thu 12/9

1 stop15h 14m

£691

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 5/9

2 stops22h 59m

Lambert-St Louis

Thu 26/9

2 stops24h 00m

£779

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 7/5

2 stops30h 13m

Lambert-St Louis

Tue 14/5

1 stop11h 45m

£818

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 7/5

1 stop12h 51m

Lambert-St Louis

Tue 14/5

1 stop13h 30m

£825

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 8/5

2 stops15h 16m

Lambert-St Louis

Sat 18/5

1 stop12h 20m

£849

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Sat 4/5

2 stops18h 43m

Lambert-St Louis

Sat 11/5

2 stops12h 46m

£889

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 5/9

2 stops16h 44m

Lambert-St Louis

Thu 26/9

1 stop14h 10m

£900

Flights are sorted by cheapest first

Deals found on 19/4

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 28 January 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 10 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 14 April 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 £448 while a return flight costs £777. Price data was last updated on 14 April 2024.

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to St. Louis (average of £667). Flying from London Heathrow Airport to St. Louis in August is currently the most expensive (average of £837). 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

£582

February

£557

March

£570

April

£567

May

£590

June

£616

July

£615

August

£674

September

£562

October

£556

November

£537

December

£545

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 April 2024.
To help decide which airline to fly from London to St. Louis, see what other customers have to say about Finnair, United Airlines and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very Good
11,069 reviews
Check prices

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very Good
11,069 reviews
Delta
8.1
Very Good
11,069 reviews
Check prices

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

KLM
7.9
Good
1,639 reviews
Delta
8.1
Very Good
11,069 reviews
Check prices

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Finnair
7.8
Good
1,390 reviews
Delta
8.1
Very Good
11,069 reviews
Check prices

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Virgin Atlantic
7.7
Good
751 reviews
Delta
8.1
Very Good
11,069 reviews
Check prices

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Air France
7.6
Good
1,821 reviews
Delta
8.1
Very Good
11,069 reviews
Check prices

Food

7.5

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

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. 8 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 £617, but on average you can expect to pay £718.

  • Are there last-minute flights available from London Heathrow Airport to St. Louis for under £1,000?

    There are currently 19+ open flights from London Heathrow Airport to St. Louis within the next 7 days for less than £1,000.

  • 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 £617. Other airlines that can offer you cheap pricing are Iberia, from £691, and United Airlines, from £818.

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

    For one-way options, check prices for Finnair According to our data, you can fly for as little as £657. Users have also found prices from £727 and £748 on British Airways and Lufthansa, respectively.

  • 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 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 20/4.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Heathrow to St. Louis

Discover the top 8 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 899,432 searches. Data last updated 20 April 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£474Average£838FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£476Average£833FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£477Average£585FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£484Average£883FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£539Average£852FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
American AirlinesCheapest£636Average£971FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest£658Average£862FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£780Average£942FlexibilityNo cancel feeOn-time75%
Search KLM flights
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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.
First Class
Business Class
Prem Econ Class
Economy class

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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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