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Cheap flights from London Heathrow Airport to St. Louis from £411

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 13/5. 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
11 May — 18 May1
1 adult
Sat 11/5
Sat 18/5

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 6 May 2024.

Popular in

August

Cheapest in

November

Average price

£606

Round-trip from

£534
High demand for flights, 23% potential price rise
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Best time to find cheap flights, 17% potential price drop
Search Deals
Average for round-trip flights in May 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 11% 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 £527, or £704 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 £612. You can even find prices in November for less than £612, as users have found deals to St. Louis from as low as £438. 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 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 878,137 searches. Data last updated 6 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.
Wed 15/511:15LHR - STL
1 stop18h 02mFinnair
Thu 30/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 5/5£527
Tue 4/610:10LHR - STL
1 stop19h 07mFinnair
Tue 11/617:38STL - LHR
1 stop12h 32mFinnair
Deal found 5/5£541
Mon 3/615:15LHR - STL
1 stop14h 07mFinnair
Tue 11/606:29STL - LHR
1 stop20h 31mFinnair
Deal found 5/5£548
Thu 5/909:45LHR - STL
1 stop16h 26mFinnair
Thu 26/917:30STL - LHR
1 stop16h 35mFinnair
Deal found 5/5£555
Fri 24/511:15LHR - STL
1 stop18h 02mFinnair
Tue 4/616:20STL - LHR
1 stop10h 45mFinnair
Deal found 5/5£574
Mon 3/612:30LHR - STL
1 stop16h 49mFinnair
Thu 13/609:23STL - LHR
1 stop16h 17mFinnair
Deal found 5/5£590
Fri 25/1015:15LHR - STL
1 stop11h 52mFinnair
Sat 2/1119:23STL - LHR
1 stop15h 37mFinnair
Deal found 5/5£603
Wed 15/512:15LHR - STL
1 stop15h 32mFinnair
Sat 18/517:08STL - LHR
1 stop23h 02mFinnair
Deal found 5/5£738
Tue 13/811:15LHR - STL
1 stop17h 27mFinnair
Mon 2/918:18STL - LHR
1 stop21h 52mFinnair
Deal found 5/5£750

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 878,137 searches. Data last updated 6 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 26/914:05LHR - STL
2 stops31h 44mAir Canada
Sun 29/916:05STL - LHR
2 stops32h 25mAir Canada
Deal found 5/5£742
Mon 8/708:30LHR - STL
1 stop17h 31mAir Canada
Mon 7/1010:10STL - LHR
2 stops14h 20mAir Canada
Deal found 5/5£781
Fri 25/1014:05LHR - STL
1 stop13h 00mAir Canada
Sat 2/1116:10STL - LHR
2 stops47h 25mAir Canada
Deal found 5/5£798
Sat 26/1009:30LHR - STL
2 stops16h 30mAir Canada
Sat 2/1113:27STL - LHR
2 stops16h 53mAir Canada
Deal found 5/5£1,414

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 878,137 searches. Prices were last updated on 6 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.
Wed 15/511:15LHR - STL
1 stop18h 02mFinnair
Thu 30/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 5/5£527
Wed 8/511:15LHR - STL
1 stop18h 02mFinnair
Sat 18/510:46STL - LHR
1 stop16h 19mFinnair
Deal found 5/5£535
Tue 4/610:10LHR - STL
1 stop19h 07mFinnair
Tue 11/617:38STL - LHR
1 stop12h 32mFinnair
Deal found 5/5£541
Mon 3/615:15LHR - STL
1 stop14h 07mFinnair
Tue 11/606:29STL - LHR
1 stop20h 31mFinnair
Deal found 5/5£548
Thu 9/514:10LHR - STL
1 stop15h 09mFinnair
Sat 18/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 5/5£571
Fri 24/511:15LHR - STL
1 stop18h 02mFinnair
Tue 4/616:20STL - LHR
1 stop10h 45mFinnair
Deal found 5/5£574
Mon 3/612:30LHR - STL
1 stop16h 49mFinnair
Thu 13/609:23STL - LHR
1 stop16h 17mFinnair
Deal found 5/5£590
Wed 15/512:15LHR - STL
1 stop15h 32mFinnair
Sat 18/517:08STL - LHR
1 stop23h 02mFinnair
Deal found 5/5£738
Wed 15/506:50LHR - STL
2 stops14h 56mUnited Airlines
Thu 30/506:08STL - LHR
2 stops18h 22mUnited Airlines
Deal found 5/5£743

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 878,137 searches. Data last updated 6 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.
Wed 15/511:15LHR - STL
1 stop18h 02mFinnair
Thu 30/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 5/5£527
Wed 8/511:15LHR - STL
1 stop18h 02mFinnair
Sat 18/510:46STL - LHR
1 stop16h 19mFinnair
Deal found 5/5£535
Tue 4/610:10LHR - STL
1 stop19h 07mFinnair
Tue 11/617:38STL - LHR
1 stop12h 32mFinnair
Deal found 5/5£541
Mon 3/615:15LHR - STL
1 stop14h 07mFinnair
Tue 11/606:29STL - LHR
1 stop20h 31mFinnair
Deal found 5/5£548
Thu 5/909:45LHR - STL
1 stop16h 26mFinnair
Thu 26/917:30STL - LHR
1 stop16h 35mFinnair
Deal found 5/5£555
Thu 9/514:10LHR - STL
1 stop15h 09mFinnair
Sat 18/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 5/5£571
Fri 24/511:15LHR - STL
1 stop18h 02mFinnair
Tue 4/616:20STL - LHR
1 stop10h 45mFinnair
Deal found 5/5£574
Mon 3/612:30LHR - STL
1 stop16h 49mFinnair
Thu 13/609:23STL - LHR
1 stop16h 17mFinnair
Deal found 5/5£590
Fri 25/1015:15LHR - STL
1 stop11h 52mFinnair
Sat 2/1119:23STL - LHR
1 stop15h 37mFinnair
Deal found 5/5£603

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 878,137 searches. Data last updated 6 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.
Wed 15/511:15LHR - STL
1 stop18h 02mFinnair
Thu 30/510:46STL - LHR
1 stop14h 44mFinnair
Deal found 5/5£527
Wed 15/512:15LHR - STL
1 stop15h 32mFinnair
Sat 18/517:08STL - LHR
1 stop23h 02mFinnair
Deal found 5/5£738
Wed 15/506:50LHR - STL
2 stops14h 56mUnited Airlines
Thu 30/506:08STL - LHR
2 stops18h 22mUnited Airlines
Deal found 5/5£743
Wed 15/508:30LHR - STL
1 stop17h 24mUnited Airlines
Thu 30/508:05STL - LHR
1 stop15h 50mUnited Airlines
Deal found 5/5£751
Wed 15/506:30LHR - STL
2 stops18h 11mDelta
Thu 30/518:12STL - LHR
2 stops12h 03mDelta
Deal found 5/5£754
Wed 15/509:55LHR - STL
3 stops28h 59mMultiple Airlines
Thu 30/506:30STL - LHR
3 stops20h 25mMultiple Airlines
Deal found 5/5£885
Wed 15/522:05LHR - STL
2 stops25h 24mMultiple Airlines
Thu 30/518:19STL - LHR
3 stops33h 56mMultiple Airlines
Deal found 5/5£1,159
Wed 15/506:00LHR - STL
2 stops21h 55mAustrian Airlines
Sat 18/511:10STL - LHR
2 stops17h 30mAustrian Airlines
Deal found 5/5£1,524
Wed 15/508:30LHR - STL
2 stops18h 35mMultiple Airlines
Sat 18/515:15STL - LHR
2 stops12h 45mMultiple Airlines
Deal found 5/5£1,532

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 878,137 searches. Data last updated 6 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 13/521:10LHR - STL
3 stops43h 08mMultiple Airlines
Deal found 5/5£411
Tue 4/621:25LHR - STL
3 stops51h 57mMultiple Airlines
Deal found 5/5£414
Mon 13/513:55LHR - STL
2 stops37h 57mWestJet
Deal found 5/5£478
Tue 4/620:30LHR - STL
2 stops23h 00mMultiple Airlines
Deal found 5/5£497
Sun 28/706:45LHR - STL
3 stops33h 33mMultiple Airlines
Deal found 5/5£508
Mon 9/920:00LHR - STL
3 stops28h 21mMultiple Airlines
Deal found 5/5£546
Sat 13/721:25LHR - STL
3 stops39h 40mMultiple Airlines
Deal found 4/5£571
Mon 29/706:45LHR - STL
3 stops30h 17mMultiple Airlines
Deal found 5/5£575
Mon 9/914:10LHR - STL
1 stop14h 50mFinnair
Deal found 5/5£600

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 878,137 searches. Data last updated 6 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£527 - £771

Route

Depart

Return

Price

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 15/5

1 stop18h 02m

Lambert-St Louis

Thu 30/5

1 stop14h 44m

£527

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Tue 4/6

1 stop19h 07m

Lambert-St Louis

Tue 11/6

1 stop12h 32m

£541

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 26/9

1 stop13h 19m

Lambert-St Louis

Sun 29/9

2 stops32h 25m

£722

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Thu 26/9

2 stops31h 44m

Lambert-St Louis

Sun 29/9

2 stops32h 25m

£742

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 15/5

2 stops14h 56m

Lambert-St Louis

Thu 30/5

2 stops18h 22m

£743

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Wed 15/5

2 stops18h 11m

Lambert-St Louis

Thu 30/5

2 stops12h 03m

£754

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 8/7

1 stop13h 14m

Lambert-St Louis

Mon 7/10

1 stop12h 02m

£766

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 8/7

1 stop18h 16m

Lambert-St Louis

Mon 7/10

2 stops12h 50m

£767

London HeathrowLambert-St Louis

LHR - STL

LHRSTL

London Heathrow

Mon 8/7

1 stop14h 39m

Lambert-St Louis

Mon 7/10

1 stop15h 32m

£771

Flights are sorted by cheapest first

Deals found on 5/5

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 3 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 5 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 £511 while a return flight costs £704. Price data was last updated on 5 May 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 £838). 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

£577

February

£551

March

£563

April

£571

May

£593

June

£654

July

£613

August

£668

September

£556

October

£551

November

£534

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 6 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 United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very Good
10,826 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Entertainment

8.0

Overall

8.1

Crew

8.6

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
8.1
Very Good
10,826 reviews
Delta
8.1
Very Good
10,826 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Entertainment

8.0

Overall

8.1

Crew

8.6

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
1,379 reviews
Delta
8.1
Very Good
10,826 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Entertainment

8.0

Overall

8.1

Crew

8.6

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
7.7
Good
740 reviews
Delta
8.1
Very Good
10,826 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Entertainment

8.0

Overall

8.1

Crew

8.6

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
1,072 reviews
Delta
8.1
Very Good
10,826 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Entertainment

8.0

Overall

8.1

Crew

8.6

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.

WestJet
7.6
Good
2,966 reviews
Delta
8.1
Very Good
10,826 reviews
Check prices

Comfort

7.9

Food

7.4

Boarding

8.2

Entertainment

8.0

Overall

8.1

Crew

8.6

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 £527, but on average you can expect to pay £687.

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

    There are currently 10+ 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 £527. Other airlines that can offer you cheap pricing are Air Canada, from £742, and United Airlines, from £743. Finnair is priced at 15% 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 £478. Users have also found prices from £600 and £901 on Finnair and Turkish Airlines, 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 5/5.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 878,137 searches. Data last updated 6 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£469Average£829FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£471Average£814FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£476Average£584FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£477Average£842FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£533Average£842FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IberiaCheapest£565Average£724FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£629Average£961FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest£638Average£850FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£772Average£932FlexibilityNo cancel feeOn-time75%
Search KLM flights
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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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