Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to St. Louis from £276

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
29 Apr — 6 May1
1 adult
Mon 29/4
Mon 6/5

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 24 April 2024.

Popular in

August

Cheapest in

February

Average price

£583

Round-trip from

£540
High demand for flights, 22% potential price rise
Search Deals
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 £511, or £589 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 £600. You can even find prices in February for less than £600, 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 at midday. If you’re flexible enough to do this you can expect to save up to 7% on your trip compared to booking a flight in the evening.

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 928,330 searches. Data last updated 24 April 2024.
Find some of the cheapest United Airlines flights travelling from London to St. Louis. Make sure to double check the flight details before booking.
Sun 15/906:50LHR - STL
2 stops14h 03mUnited Airlines
Wed 25/911:10STL - LHR
2 stops14h 05mUnited Airlines
Deal found 23/4£828
Fri 10/506:50LHR - STL
2 stops21h 05mUnited Airlines
Fri 17/517:25STL - LHR
1 stop33h 05mUnited Airlines
Deal found 23/4£872
Mon 3/606:50LHR - STL
2 stops14h 51mUnited Airlines
Thu 13/606:15STL - LHR
1 stop23h 20mUnited Airlines
Deal found 23/4£918
Mon 1/710:35LHR - STL
2 stops17h 02mUnited Airlines
Mon 8/717:30STL - LHR
1 stop12h 15mUnited Airlines
Deal found 23/4£926
Fri 31/506:50LHR - STL
2 stops18h 29mUnited Airlines
Wed 5/613:42STL - LHR
1 stop13h 58mUnited Airlines
Deal found 23/4£948
Thu 23/506:50LHR - STL
2 stops14h 51mUnited Airlines
Thu 30/506:08STL - LHR
2 stops18h 22mUnited Airlines
Deal found 23/4£957
Thu 23/514:05LHR - STL
1 stop13h 00mUnited Airlines
Thu 30/510:15STL - LHR
1 stop13h 40mUnited Airlines
Deal found 23/4£963
Wed 1/506:50LHR - STL
2 stops14h 56mUnited Airlines
Mon 13/510:10STL - LHR
2 stops14h 35mUnited Airlines
Deal found 23/4£1,041
Tue 30/408:40LHR - STL
2 stops17h 14mUnited Airlines
Sat 11/508:27STL - LHR
2 stops15h 28mUnited Airlines
Deal found 23/4£1,070

Cheap Austrian Airlines flights from Heathrow to St. Louis

Explore cheap flight options specifically provided by Austrian 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 928,330 searches. Data last updated 24 April 2024.
Have a look at some of the cheapest available Austrian Airlines flights departing from London and landing in St. Louis. Make sure to examine the flight information before completing your reservation.
Mon 6/506:00LHR - STL
2 stops21h 55mAustrian Airlines
Mon 20/511:10STL - LHR
1 stop15h 20mAustrian Airlines
Deal found 22/4£857
Mon 6/519:30LHR - STL
2 stops32h 25mAustrian Airlines
Mon 20/511:10STL - LHR
1 stop18h 35mAustrian Airlines
Deal found 24/4£1,044
Fri 3/506:00LHR - STL
2 stops21h 55mAustrian Airlines
Tue 7/511:10STL - LHR
2 stops13h 35mAustrian Airlines
Deal found 23/4£1,071
Mon 29/419:30LHR - STL
2 stops27h 44mAustrian Airlines
Sat 4/511:00STL - LHR
1 stop17h 10mAustrian Airlines
Deal found 23/4£1,520

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 928,330 searches. Prices were last updated on 24 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.
Mon 6/512:30LHR - STL
1 stop16h 49mFinnair
Mon 20/516:20STL - LHR
1 stop10h 45mFinnair
Deal found 22/4£584
Wed 1/514:10LHR - STL
1 stop15h 16mFinnair
Sun 5/516:41STL - LHR
1 stop32h 49mFinnair
Deal found 23/4£588
Wed 8/514:10LHR - STL
1 stop15h 09mFinnair
Sat 18/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 23/4£602
Mon 6/510:30LHR - STL
1 stop18h 49mFinnair
Fri 10/514:00STL - LHR
1 stop11h 30mFinnair
Deal found 23/4£602
Wed 8/514:10LHR - STL
1 stop15h 09mFinnair
Sat 11/510:46STL - LHR
1 stop16h 19mFinnair
Deal found 24/4£605
Tue 30/411:40LHR - STL
1 stop17h 14mFinnair
Sat 11/510:46STL - LHR
1 stop16h 19mFinnair
Deal found 23/4£614
Mon 29/413:05LHR - STL
1 stop15h 55mFinnair
Sat 4/517:06STL - LHR
1 stop16h 59mFinnair
Deal found 23/4£615
Thu 2/512:30LHR - STL
1 stop16h 56mFinnair
Mon 6/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 23/4£618
Wed 1/512:30LHR - STL
1 stop16h 56mFinnair
Sun 5/516:41STL - LHR
1 stop32h 49mFinnair
Deal found 24/4£620

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 928,330 searches. Data last updated 24 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.
Mon 6/512:30LHR - STL
1 stop16h 49mFinnair
Mon 20/516:20STL - LHR
1 stop10h 45mFinnair
Deal found 22/4£584
Wed 1/514:10LHR - STL
1 stop15h 16mFinnair
Sun 5/516:41STL - LHR
1 stop32h 49mFinnair
Deal found 23/4£588
Wed 8/514:10LHR - STL
1 stop15h 09mFinnair
Sat 18/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 23/4£602
Mon 6/510:30LHR - STL
1 stop18h 49mFinnair
Fri 10/514:00STL - LHR
1 stop11h 30mFinnair
Deal found 23/4£602
Wed 8/514:10LHR - STL
1 stop15h 09mFinnair
Sat 11/510:46STL - LHR
1 stop16h 19mFinnair
Deal found 24/4£605
Sun 15/910:30LHR - STL
1 stop18h 30mFinnair
Wed 25/911:08STL - LHR
1 stop14h 22mFinnair
Deal found 23/4£613
Tue 30/411:40LHR - STL
1 stop17h 14mFinnair
Sat 11/510:46STL - LHR
1 stop16h 19mFinnair
Deal found 23/4£614
Mon 29/413:05LHR - STL
1 stop15h 55mFinnair
Sat 4/517:06STL - LHR
1 stop16h 59mFinnair
Deal found 23/4£615
Thu 2/512:30LHR - STL
1 stop16h 56mFinnair
Mon 6/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 23/4£618

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 928,330 searches. Data last updated 24 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.
Wed 1/514:10LHR - STL
1 stop15h 16mFinnair
Sun 5/516:41STL - LHR
1 stop32h 49mFinnair
Deal found 23/4£588
Tue 30/411:40LHR - STL
1 stop17h 14mFinnair
Sat 11/510:46STL - LHR
1 stop16h 19mFinnair
Deal found 23/4£614
Mon 29/413:05LHR - STL
1 stop15h 55mFinnair
Sat 4/517:06STL - LHR
1 stop16h 59mFinnair
Deal found 23/4£615
Thu 2/512:30LHR - STL
1 stop16h 56mFinnair
Mon 6/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 23/4£618
Wed 1/512:30LHR - STL
1 stop16h 56mFinnair
Sun 5/516:41STL - LHR
1 stop32h 49mFinnair
Deal found 24/4£620
Wed 1/512:30LHR - STL
1 stop16h 56mFinnair
Fri 17/514:00STL - LHR
1 stop11h 30mFinnair
Deal found 24/4£625
Mon 29/414:10LHR - STL
1 stop15h 16mFinnair
Sun 5/513:47STL - LHR
1 stop13h 43mFinnair
Deal found 24/4£641
Tue 30/414:10LHR - STL
1 stop15h 16mFinnair
Sat 4/514:53STL - LHR
1 stop13h 52mFinnair
Deal found 24/4£646
Wed 1/514:10LHR - STL
1 stop15h 16mFinnair
Tue 23/715:18STL - LHR
1 stop11h 47mFinnair
Deal found 24/4£650

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 928,330 searches. Data last updated 24 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 27/517:30LHR - STL
3 stops47h 16mMultiple Airlines
Deal found 23/4£276
Tue 14/506:45LHR - STL
3 stops33h 33mMultiple Airlines
Deal found 23/4£344
Thu 8/810:35LHR - STL
3 stops36h 47mMultiple Airlines
Deal found 23/4£461
Fri 28/621:25LHR - STL
3 stops43h 19mMultiple Airlines
Deal found 23/4£517
Sat 18/521:25LHR - STL
2 stops42h 11mMultiple Airlines
Deal found 23/4£528
Mon 9/920:25LHR - STL
3 stops27h 56mMultiple Airlines
Deal found 23/4£547
Sun 15/921:05LHR - STL
3 stops27h 16mMultiple Airlines
Deal found 23/4£557
Mon 27/522:05LHR - STL
2 stops52h 05mMultiple Airlines
Deal found 23/4£569
Tue 14/507:15LHR - STL
2 stops32h 32mMultiple Airlines
Deal found 23/4£571

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 928,330 searches. Data last updated 24 April 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£584 - £1,028

Route

Depart

Return

Price

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 6/5

1 stop16h 49m

Lambert-St Louis

Mon 20/5

1 stop10h 45m

£584

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 18/6

1 stop14h 26m

Lambert-St Louis

Sat 22/6

1 stop13h 50m

£677

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 6/5

3 stops28h 00m

Lambert-St Louis

Mon 20/5

3 stops35h 40m

£688

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Sun 15/9

2 stops14h 03m

Lambert-St Louis

Wed 25/9

2 stops14h 05m

£828

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 6/5

2 stops21h 55m

Lambert-St Louis

Mon 20/5

1 stop15h 20m

£857

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Fri 10/5

2 stops18h 54m

Lambert-St Louis

Fri 17/5

2 stops15h 57m

£883

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 5/9

2 stops13h 55m

Lambert-St Louis

Thu 26/9

1 stop10h 30m

£888

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 3/6

1 stop14h 25m

Lambert-St Louis

Thu 13/6

1 stop14h 43m

£941

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 6/5

2 stops15h 51m

Lambert-St Louis

Mon 20/5

2 stops17h 13m

£1,028

Flights are sorted by cheapest first

Deals found on 22/4

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 21 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 £486 while a return flight costs £819. Price data was last updated on 21 April 2024.

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to St. Louis (average of £670). Flying from London Heathrow Airport to St. Louis in August is currently the most expensive (average of £836). 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

£584

February

£558

March

£570

April

£573

May

£598

June

£628

July

£618

August

£674

September

£563

October

£558

November

£540

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 24 April 2024.
To help decide which airline to fly from London to St. Louis, see what other customers have to say about United Airlines, Austrian Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very Good
11,004 reviews
Check prices

Crew

8.6

Entertainment

8.0

Food

7.5

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 10

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

Delta
8.1
Very Good
11,004 reviews
Delta
8.1
Very Good
11,004 reviews
Check prices

Crew

8.6

Entertainment

8.0

Food

7.5

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 10

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

KLM
7.9
Good
1,629 reviews
Delta
8.1
Very Good
11,004 reviews
Check prices

Crew

8.6

Entertainment

8.0

Food

7.5

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 10

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

Finnair
7.8
Good
1,385 reviews
Delta
8.1
Very Good
11,004 reviews
Check prices

Crew

8.6

Entertainment

8.0

Food

7.5

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 10

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

Austrian Airlines
7.7
Good
1,091 reviews
Delta
8.1
Very Good
11,004 reviews
Check prices

Crew

8.6

Entertainment

8.0

Food

7.5

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 10

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

WestJet
7.5
Good
2,991 reviews
Delta
8.1
Very Good
11,004 reviews
Check prices

Crew

8.6

Entertainment

8.0

Food

7.5

Boarding

8.2

Overall

8.1

Comfort

7.9

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 £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 £584, but on average you can expect to pay £659.

  • 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 £584. Another airline that can offer you cheap pricing is Iberia. Finnair is priced at 2% 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 Finnair According to our data, you can fly for as little as £673. Users have also found prices from £695 and £812 on WestJet and British Airways, 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 24/4.

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 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 928,330 searches. Data last updated 24 April 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£475Average£839FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£476Average£824FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£478Average£588FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£484Average£857FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£540Average£853FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
American AirlinesCheapest£636Average£973FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest£658Average£863FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£781Average£944FlexibilityNo cancel feeOn-time75%
Search KLM flights
London to Málaga flights
London Gatwick Airport to Seville flights
London to Dubai flights
London to Morocco flights
Birmingham to Paris flights
Bristol to Ibiza flights
London to Lisbon flights
London to Phuket City flights
Bristol to Dublin flights
London to Mozambique flights
Dublin to Crete flights
London Heathrow Airport to Stockholm 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.
First Class
Business Class
Prem Econ Class
Economy class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Providence-TFGreen
Flights to Monterey Regional
Flights to New Bern Coastal Carolina Rgnl
Flights to Clermont-Ferrand Aulnat
Flights to Lille Lesquin
Flights to Naxos
Flights to Lihue
Flights to Cagayan de Oro Laguindingan
Flights to Lynchburg Preston-Glenn Field
Flights to Kalamata
Flights to Malmö
Flights to Kavála Megas Alexandros
Flights to La Rochelle Laleu
Flights to Appleton Intl
Flights to Rijeka
Flights to Avignon-Caum
Flights to Kalamazoo Intl
Flights to Flagstaff Pulliam
Flights to Rimini Miramare

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.
View all available airlines