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Cheap flights from St. Louis to London Heathrow Airport from £321

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 11/5. 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.
STL — LHR
10 May — 17 May1
1 adult
Fri 10/5
Fri 17/5

The best prices from Lambert-St Louis to London Heathrow are usually found in February or January, booked 64 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from St. Louis to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Heathrow (LHR). 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 5 May 2024.

Popular in

June

Cheapest in

February

Average price

£830

Round-trip from

£69
High demand for flights, 42% potential price rise
Search Deals
Best time to find cheap flights, 21% potential price drop
Search Deals
Average for round-trip flights in May 2024
Search Deals
From Lambert-St Louis to London Heathrow
Search Deals

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

Tuesday is generally a great day to depart. Flying on this day could help you save up to 28%.

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

Users have found that booking a flight from St. Louis to London Heathrow Airport at least 10 days early can save you up to 13% on average compared to booking a flight this week. If booking 10 days before your flight isn’t an option for you, users have found flights from St. Louis to London Heathrow Airport for as little as £467 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £748 for flights departing within the next 3 days.

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

Our data shows that February tends to be the cheapest month to fly to London Heathrow Airport from St. Louis. Users have commonly found prices around £744 for the month, but tickets can be as low as £495. Due to multiple factors, prepare for potentially higher prices in June.

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

Unlike in the morning, when flights are generally more expensive, you can save up to 4% on flights from St. Louis to London Heathrow Airport by exploring options for tickets in the afternoon.

Cheap United Airlines flights from St. Louis to Heathrow

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and Heathrow. 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 892,239 searches. Data last updated 5 May 2024.
Consider these cheap United Airlines flights we've found departing from St. Louis to London. Deals update often to give you more flight options matching your criteria
Sun 18/817:03STL - LHR
1 stop12h 32mUnited Airlines
Tue 27/808:30LHR - STL
1 stop12h 51mUnited Airlines
Deal found 3/5£552
Tue 21/516:51STL - LHR
1 stop13h 29mUnited Airlines
Tue 28/508:30LHR - STL
1 stop12h 51mUnited Airlines
Deal found 4/5£598
Sat 10/816:36STL - LHR
1 stop35h 04mUnited Airlines
Sat 31/811:05LHR - STL
1 stop16h 23mUnited Airlines
Deal found 4/5£600
Tue 13/813:10STL - LHR
1 stop10h 45mUnited Airlines
Mon 19/813:40LHR - STL
2 stops26h 27mUnited Airlines
Deal found 3/5£645
Sat 17/817:30STL - LHR
2 stops34h 10mUnited Airlines
Sun 25/813:40LHR - STL
1 stop14h 33mUnited Airlines
Deal found 4/5£650
Wed 7/817:30STL - LHR
1 stop12h 15mUnited Airlines
Fri 16/808:30LHR - STL
1 stop11h 48mUnited Airlines
Deal found 3/5£716
Wed 25/912:00STL - LHR
1 stop12h 30mUnited Airlines
Tue 1/1009:30LHR - STL
1 stop34h 00mUnited Airlines
Deal found 3/5£781
Fri 9/817:03STL - LHR
1 stop12h 32mUnited Airlines
Sun 18/813:40LHR - STL
1 stop14h 37mUnited Airlines
Deal found 3/5£796

Cheap Delta flights from St. Louis to Heathrow

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Heathrow. 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 892,239 searches. Data last updated 5 May 2024.
Take a gander at the lowest prices we've found on Delta flights from St. Louis to London. Check back soon if you're not seeing flights that suit your needs.
Wed 21/809:00STL - LHR
1 stop16h 15mDelta
Wed 28/815:55LHR - STL
1 stop13h 44mDelta
Deal found 3/5£555
Thu 22/811:51STL - LHR
1 stop12h 34mDelta
Wed 28/812:45LHR - STL
1 stop12h 29mDelta
Deal found 3/5£595
Tue 14/506:30STL - LHR
1 stop18h 15mDelta
Thu 30/506:15LHR - STL
2 stops17h 07mDelta
Deal found 4/5£596
Tue 21/510:20STL - LHR
2 stops15h 45mDelta
Tue 28/511:30LHR - STL
2 stops16h 04mDelta
Deal found 4/5£599
Wed 14/814:20STL - LHR
1 stop13h 40mDelta
Thu 22/813:55LHR - STL
1 stop12h 50mDelta
Deal found 3/5£601
Wed 4/911:51STL - LHR
1 stop12h 34mDelta
Wed 18/909:00LHR - STL
2 stops18h 31mDelta
Deal found 3/5£610
Wed 4/911:51STL - LHR
2 stops16h 24mDelta
Wed 18/911:30LHR - STL
2 stops16h 01mDelta
Deal found 4/5£614
Wed 9/1011:51STL - LHR
1 stop12h 34mDelta
Wed 23/1006:15LHR - STL
2 stops16h 36mDelta
Deal found 4/5£623
Sat 10/811:51STL - LHR
2 stops14h 14mDelta
Sat 31/811:30LHR - STL
2 stops18h 09mDelta
Deal found 4/5£634

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

Find cheap flight options from St. Louis to Heathrow specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 892,239 searches. Prices were last updated on 5 May 2024.
Check out some of the best flight deals from St. Louis to London in 2024. Check back regularly for other flight deals.
Tue 21/505:55STL - LHR
1 stop10h 15mBritish Airways
Mon 27/519:35LHR - STL
2 stops27h 47mBritish Airways
Deal found 4/5£592
Tue 21/506:11STL - LHR
1 stop19h 04mDelta
Tue 28/511:30LHR - STL
2 stops18h 10mDelta
Deal found 4/5£595
Tue 21/506:11STL - LHR
1 stop19h 04mDelta
Tue 28/509:00LHR - STL
2 stops18h 34mDelta
Deal found 5/5£596
Tue 21/508:47STL - LHR
1 stop21h 33mUnited Airlines
Tue 28/508:30LHR - STL
1 stop12h 51mUnited Airlines
Deal found 5/5£598
Tue 21/514:18STL - LHR
2 stops15h 57mDelta
Tue 28/506:15LHR - STL
2 stops17h 07mDelta
Deal found 5/5£599
Wed 8/511:00STL - LHR
1 stop17h 00mAir Canada
Wed 22/519:30LHR - STL
2 stops30h 31mAir Canada
Deal found 4/5£602
Wed 8/506:00STL - LHR
2 stops18h 30mAir Canada
Wed 22/519:30LHR - STL
2 stops30h 31mAir Canada
Deal found 4/5£606
Tue 21/511:10STL - LHR
1 stop14h 30mUnited Airlines
Sat 1/606:50LHR - STL
2 stops20h 56mUnited Airlines
Deal found 5/5£634
Tue 21/510:10STL - LHR
1 stop13h 45mMultiple Airlines
Mon 27/508:30LHR - STL
1 stop12h 51mMultiple Airlines
Deal found 4/5£638

St. Louis to Heathrow 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Heathrow in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 5 May 2024.
Check out some of the best flight deals from St. Louis to London in 2024. Check back regularly for other flight deals.
Tue 10/911:51STL - LHR
2 stops25h 39mMultiple Airlines
Tue 17/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 4/5£512
Wed 18/910:10STL - LHR
2 stops27h 20mMultiple Airlines
Tue 24/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/5£522
Mon 9/906:00STL - LHR
2 stops28h 00mMultiple Airlines
Mon 16/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 4/5£536
Sat 7/911:51STL - LHR
2 stops22h 09mMultiple Airlines
Tue 17/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/5£546
Sat 14/914:05STL - LHR
2 stops19h 55mMultiple Airlines
Tue 17/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 4/5£551
Sun 18/817:03STL - LHR
1 stop12h 32mUnited Airlines
Tue 27/808:30LHR - STL
1 stop12h 51mUnited Airlines
Deal found 3/5£552
Wed 21/809:00STL - LHR
1 stop16h 15mDelta
Wed 28/815:55LHR - STL
1 stop13h 44mDelta
Deal found 3/5£555
Sat 14/911:51STL - LHR
2 stops23h 49mMultiple Airlines
Mon 16/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 4/5£575
Wed 25/911:51STL - LHR
2 stops27h 49mMultiple Airlines
Tue 1/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 4/5£585

St. Louis to Heathrow flights leaving soon

Find last-minute flight options from St. Louis to Heathrow 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 892,239 searches. Data last updated 5 May 2024.
Have a look at some of the last-minute flights available departing from St. Louis to London. Users should examine the flight details to ensure there are no surprises.
Sun 12/515:27STL - LHR
1 stop15h 48mDelta
Fri 31/506:15LHR - STL
2 stops17h 50mDelta
Deal found 4/5£596
Tue 14/516:57STL - LHR
1 stop12h 38mUnited Airlines
Thu 30/508:30LHR - STL
1 stop17h 31mUnited Airlines
Deal found 4/5£598
Sun 12/514:18STL - LHR
2 stops15h 57mDelta
Fri 31/506:15LHR - STL
2 stops17h 50mDelta
Deal found 4/5£599
Mon 13/506:11STL - LHR
1 stop19h 04mVirgin Atlantic
Sun 26/511:30LHR - STL
2 stops16h 04mVirgin Atlantic
Deal found 3/5£636
Mon 13/514:00STL - LHR
1 stop11h 30mAmerican Airlines
Sun 26/515:15LHR - STL
1 stop14h 07mAmerican Airlines
Deal found 3/5£638
Mon 13/512:00STL - LHR
2 stops13h 05mVirgin Atlantic
Sun 26/511:30LHR - STL
2 stops16h 04mVirgin Atlantic
Deal found 3/5£639
Sat 11/505:55STL - LHR
1 stop10h 15mAmerican Airlines
Fri 17/512:15LHR - STL
1 stop13h 15mAmerican Airlines
Deal found 4/5£714
Sat 11/507:45STL - LHR
1 stop18h 05mBritish Airways
Fri 17/519:35LHR - STL
2 stops32h 10mBritish Airways
Deal found 4/5£768
Sat 11/509:50STL - LHR
2 stops17h 05mMultiple Airlines
Fri 17/506:40LHR - STL
2 stops19h 21mMultiple Airlines
Deal found 4/5£795

One-way flights to Heathrow from St. Louis

Search for one-way flight options from St. Louis to Heathrow. 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 892,239 searches. Data last updated 5 May 2024.
If you're seeking multiple options on one-way flights from St. Louis to London, be sure to check out these deals, which are updated often. Those seeking round-trip flights from St. Louis to London should utilise the search form at the top of the page.
Sat 11/516:05STL - LHR
1 stop32h 30mAir Canada
Deal found 4/5£321
Fri 17/516:05STL - LHR
2 stops37h 55mMultiple Airlines
Deal found 3/5£334
Mon 22/716:45STL - LHR
3 stops21h 35mMultiple Airlines
Deal found 3/5£343
Mon 15/720:35STL - LHR
3 stops33h 20mMultiple Airlines
Deal found 3/5£344
Mon 8/707:00STL - LHR
3 stops31h 20mMultiple Airlines
Deal found 3/5£356
Sun 14/712:45STL - LHR
3 stops17h 10mMultiple Airlines
Deal found 3/5£363
Tue 16/712:15STL - LHR
3 stops17h 40mMultiple Airlines
Deal found 3/5£373
Sat 11/510:10STL - LHR
2 stops14h 25mAir Canada
Deal found 4/5£379
Tue 4/619:23STL - LHR
3 stops44h 32mMultiple Airlines
Deal found 3/5£402

Find flights from St. Louis to Heathrow within your budget

Customise your flight search to find flights from St. Louis to Heathrow 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 892,239 searches. Data last updated 5 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£504 - £637

Route

Depart

Return

Price

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 8/10

2 stops30h 20m

London Heathrow

Tue 22/10

2 stops22h 55m

£504

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sun 18/8

1 stop12h 32m

London Heathrow

Tue 27/8

1 stop12h 51m

£552

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 21/8

1 stop16h 15m

London Heathrow

Wed 28/8

1 stop13h 44m

£555

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 14/8

1 stop18h 45m

London Heathrow

Tue 20/8

2 stops15h 42m

£605

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 9/9

1 stop12h 30m

London Heathrow

Tue 17/9

1 stop17h 35m

£611

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sun 15/9

1 stop15h 32m

London Heathrow

Thu 26/9

1 stop14h 05m

£612

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 13/8

1 stop11h 58m

London Heathrow

Mon 19/8

2 stops29h 26m

£614

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 11/9

1 stop14h 25m

London Heathrow

Thu 19/9

1 stop15h 04m

£615

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sat 18/5

1 stop33h 42m

London Heathrow

Mon 3/6

1 stop13h 02m

£637

Flights are sorted by cheapest first

Deals found on 3/5

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

Use this chart to determine the cheapest time to fly return from St. Louis to Heathrow. Price data was last updated on 28 April 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their St. Louis to London Heathrow Airport flight should consider departing on Wednesday at midday when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Heathrow by month

Plan your trip from St. Louis to Heathrow by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Heathrow is currently £357 while a return flight costs £590. Price data was last updated on 28 April 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to London Heathrow Airport (average of £111). Flying from St. Louis to London Heathrow Airport in June is currently the most expensive (average of £171). 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

£88

February

£99

March

£95

April

£101

May

£108

June

£136

July

£135

August

£116

September

£112

October

£127

November

£92

December

£96

Temperature and rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature and rainfall totals by month.

LON

Temperature

4 - 17 °C

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 5 May 2024.
Read reviews from past customers who have flown United Airlines, Delta and Virgin Atlantic from St. Louis to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very Good
10,838 reviews
Check prices

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.1
Very Good
10,838 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,604 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Finnair
7.8
Good
1,381 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Virgin Atlantic
7.7
Good
742 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Air France
7.6
Good
1,786 reviews
Delta
8.1
Very Good
10,838 reviews
Check prices

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Heathrow. 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 from for flights from St. Louis to London Heathrow?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to London Heathrow. You should not have trouble finding flights to London Heathrow from Lambert-St Louis; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the St. Louis airport to London Heathrow. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • Can I find flights from St. Louis to London Heathrow Airport for under £600 on Cheapflights?

    Yes, there are multiple flights from St. Louis to London Heathrow Airport for under £600. The cheapest flight booked recently is on Multiple Airlines for just £504, but on average you can expect to pay £559.

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

    There are currently 15+ open flights from St. Louis to London Heathrow Airport within the next 7 days for less than £600.

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

    United Airlines, at £552, was found to be the cheapest airline from St. Louis to London Heathrow Airport.Alternate airlines flying return to your destination include Delta and Virgin Atlantic. You may be able to fly from St. Louis to London Heathrow Airport for 23% less than the average price by searching for these airlines.

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

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as £321. However, be on the lookout for offers from United Airlines and Iberia, as they are both options that can get you from St. Louis to London Heathrow Airport for a low price.

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

    Consider British Airways, United Airlines or Virgin Atlantic when booking your flight. These represent the most popular airlines when flying from St. Louis to London Heathrow Airport.

  • What does STL to LHR mean?

    This is defined as Lambert-St Louis Airport (STL) and London Heathrow Airport (LHR). Codes like London Heathrow Airport are often used to just call airports uniquely.

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

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

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

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

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

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

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

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

    Many airlines flying from St. Louis to Heathrow 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 St. Louis to Heathrow?

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

    The St. Louis to London Heathrow Airport 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from St. Louis to Heathrow

Discover the top 3 airlines that operate flights from St. Louis to Heathrow. 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 892,239 searches. Data last updated 5 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£442Average£588FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£485Average£616FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£543Average£577FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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St. Louis to London flights

Search flights from St. Louis to Heathrow by cabin class

Find flights from St. Louis to Heathrow, 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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How does Cheapflights help users find flights from St. Louis to Heathrow?

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Heathrow.

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

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

Not ready to book yet? You can track prices for flights from St. Louis to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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