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Cheap flights from St. Louis to London Heathrow Airport from £340

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 22/7. 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
22 maj — 29 maj1
1 adult
ons. 22/5
ons. 29/5

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 17 maj 2024.

Popular in

June

Cheapest in

February

Average price

£822

Round-trip from

£68
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 £462 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 £740 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 £736 for the month, but tickets can be as low as £491. 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 at midday, when flights are generally more expensive, you can save up to 5% 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 844,321 searches. Data last updated 17 maj 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
man. 23/917:20STL - LHR
1 stop30h 35mUnited Airlines
tor. 3/1015:50LHR - STL
1 stop29h 30mUnited Airlines
Deal found 15/5£578
ons. 4/912:55STL - LHR
1 stop11h 00mUnited Airlines
ons. 18/918:00LHR - STL
2 stops24h 22mUnited Airlines
Deal found 16/5£581
søn. 9/609:50STL - LHR
1 stop14h 45mUnited Airlines
ons. 19/606:50LHR - STL
2 stops20h 54mUnited Airlines
Deal found 16/5£590
ons. 25/912:00STL - LHR
1 stop12h 30mUnited Airlines
tir. 1/1009:30LHR - STL
1 stop34h 00mUnited Airlines
Deal found 16/5£596
fre. 4/1011:17STL - LHR
1 stop13h 53mUnited Airlines
fre. 18/1007:25LHR - STL
2 stops15h 46mUnited Airlines
Deal found 16/5£620
ons. 11/906:15STL - LHR
1 stop23h 20mUnited Airlines
lør. 21/918:00LHR - STL
1 stop27h 20mUnited Airlines
Deal found 16/5£621
fre. 4/1015:35STL - LHR
2 stops13h 05mUnited Airlines
fre. 18/1007:25LHR - STL
2 stops15h 46mUnited Airlines
Deal found 16/5£623
ons. 25/913:15STL - LHR
2 stops13h 05mUnited Airlines
tir. 1/1009:30LHR - STL
1 stop34h 00mUnited Airlines
Deal found 16/5£627
fre. 7/613:42STL - LHR
1 stop16h 38mUnited Airlines
fre. 14/606:50LHR - STL
2 stops20h 54mUnited Airlines
Deal found 16/5£629

Cheap Air Canada flights from St. Louis to Heathrow

Explore cheap flight options specifically provided by Air Canada 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 844,321 searches. Data last updated 17 maj 2024.
Take a gander at the lowest prices we've found on Air Canada flights from St. Louis to London. Check back soon if you're not seeing flights that suit your needs.
man. 23/912:00STL - LHR
1 stop16h 00mAir Canada
tor. 3/1009:30LHR - STL
1 stop17h 35mAir Canada
Deal found 16/5£579
søn. 15/912:00STL - LHR
1 stop12h 30mAir Canada
tor. 26/914:05LHR - STL
1 stop13h 00mAir Canada
Deal found 16/5£582
tir. 1/1016:05STL - LHR
1 stop11h 30mAir Canada
tir. 15/1014:05LHR - STL
1 stop13h 00mAir Canada
Deal found 16/5£585
ons. 4/916:05STL - LHR
1 stop13h 45mAir Canada
ons. 18/909:30LHR - STL
1 stop17h 35mAir Canada
Deal found 16/5£587
tir. 1/1016:05STL - LHR
1 stop11h 30mAir Canada
ons. 9/1008:30LHR - STL
1 stop12h 50mAir Canada
Deal found 16/5£589
tir. 21/509:50STL - LHR
2 stops14h 40mAir Canada
tor. 30/514:05LHR - STL
1 stop13h 00mAir Canada
Deal found 16/5£589
lør. 28/912:00STL - LHR
1 stop16h 00mAir Canada
ons. 9/1012:05LHR - STL
1 stop13h 55mAir Canada
Deal found 16/5£624
ons. 11/912:00STL - LHR
1 stop16h 00mAir Canada
lør. 21/908:30LHR - STL
2 stops18h 35mAir Canada
Deal found 16/5£626
søn. 1/910:10STL - LHR
1 stop14h 25mAir Canada
søn. 15/909:30LHR - STL
1 stop17h 35mAir Canada
Deal found 16/5£626

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 844,321 searches. Prices were last updated on 17 maj 2024.
Check out some of the best flight deals from St. Louis to London in 2024. Check back regularly for other flight deals.
fre. 14/618:08STL - LHR
1 stop10h 12mFinnair
søn. 23/610:30LHR - STL
1 stop14h 13mFinnair
Deal found 14/5£576
søn. 9/616:55STL - LHR
1 stop32h 45mUnited Airlines
tir. 18/618:00LHR - STL
1 stop27h 21mUnited Airlines
Deal found 15/5£584
tir. 21/511:00STL - LHR
1 stop13h 30mAir Canada
tor. 30/509:30LHR - STL
1 stop17h 35mAir Canada
Deal found 16/5£585
man. 3/605:55STL - LHR
1 stop10h 15mBritish Airways
man. 10/619:35LHR - STL
2 stops27h 12mBritish Airways
Deal found 14/5£586
søn. 19/511:00STL - LHR
1 stop12h 55mMultiple Airlines
fre. 7/609:30LHR - STL
1 stop17h 35mMultiple Airlines
Deal found 15/5£588
tir. 21/516:05STL - LHR
1 stop10h 30mAir Canada
tor. 30/509:30LHR - STL
1 stop17h 35mAir Canada
Deal found 15/5£589
tir. 21/509:50STL - LHR
2 stops14h 40mAir Canada
tor. 30/514:05LHR - STL
1 stop13h 00mAir Canada
Deal found 16/5£589
tir. 21/506:11STL - LHR
1 stop19h 04mDelta
tir. 28/506:15LHR - STL
2 stops17h 07mDelta
Deal found 15/5£590
søn. 9/609:50STL - LHR
2 stops16h 45mAir Canada
ons. 19/608:30LHR - STL
1 stop12h 51mAir Canada
Deal found 15/5£593

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 844,321 searches. Data last updated 17 maj 2024.
Check out some of the best flight deals from St. Louis to London in 2024. Check back regularly for other flight deals.
ons. 25/910:00STL - LHR
2 stops25h 40mMultiple Airlines
tir. 8/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 16/5£506
søn. 29/910:10STL - LHR
2 stops23h 50mMultiple Airlines
ons. 9/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 16/5£525
man. 30/911:51STL - LHR
2 stops23h 49mMultiple Airlines
man. 7/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 15/5£530
tor. 3/1014:05STL - LHR
2 stops19h 55mMultiple Airlines
tor. 10/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 16/5£546
tir. 17/910:00STL - LHR
2 stops24h 00mMultiple Airlines
tir. 24/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 16/5£554
fre. 4/1007:10STL - LHR
2 stops26h 50mMultiple Airlines
tir. 15/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 16/5£570
fre. 14/618:08STL - LHR
1 stop10h 12mFinnair
søn. 23/610:30LHR - STL
1 stop14h 13mFinnair
Deal found 14/5£576
man. 23/917:20STL - LHR
1 stop30h 35mUnited Airlines
tor. 3/1015:50LHR - STL
1 stop29h 30mUnited Airlines
Deal found 15/5£578
tir. 24/912:00STL - LHR
1 stop16h 00mAir Canada
tir. 1/1009:30LHR - STL
1 stop17h 35mAir Canada
Deal found 15/5£579

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 844,321 searches. Data last updated 17 maj 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.
tir. 21/511:00STL - LHR
1 stop13h 30mAir Canada
tor. 30/509:30LHR - STL
1 stop17h 35mAir Canada
Deal found 16/5£585
tir. 21/516:05STL - LHR
1 stop10h 30mAir Canada
tor. 30/509:30LHR - STL
1 stop17h 35mAir Canada
Deal found 15/5£589
tir. 21/509:50STL - LHR
2 stops14h 40mAir Canada
tor. 30/514:05LHR - STL
1 stop13h 00mAir Canada
Deal found 16/5£589
tir. 21/506:11STL - LHR
1 stop19h 04mDelta
tir. 28/506:15LHR - STL
2 stops17h 07mDelta
Deal found 15/5£590
tir. 21/518:12STL - LHR
2 stops12h 03mDelta
tir. 28/506:15LHR - STL
2 stops17h 07mDelta
Deal found 15/5£593
tir. 21/510:20STL - LHR
2 stops15h 45mDelta
tor. 30/511:30LHR - STL
2 stops16h 04mDelta
Deal found 15/5£594
tir. 21/505:55STL - LHR
1 stop10h 15mAmerican Airlines
tir. 28/509:15LHR - STL
1 stop16h 15mAmerican Airlines
Deal found 15/5£595
tir. 21/505:55STL - LHR
1 stop10h 15mBritish Airways
man. 27/519:35LHR - STL
2 stops31h 20mBritish Airways
Deal found 16/5£609
tir. 21/516:20STL - LHR
1 stop13h 50mAmerican Airlines
man. 27/512:15LHR - STL
1 stop13h 15mAmerican Airlines
Deal found 16/5£633

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 844,321 searches. Data last updated 17 maj 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.
man. 22/716:45STL - LHR
3 stops21h 35mMultiple Airlines
Deal found 16/5£340
tor. 13/620:12STL - LHR
3 stops43h 23mMultiple Airlines
Deal found 16/5£407
fre. 20/920:35STL - LHR
3 stops33h 20mMultiple Airlines
Deal found 15/5£410
ons. 11/912:00STL - LHR
1 stop12h 30mAir Canada
Deal found 16/5£429
ons. 10/711:25STL - LHR
1 stop12h 30mUnited Airlines
Deal found 16/5£432
lør. 27/717:30STL - LHR
1 stop30h 25mUnited Airlines
Deal found 16/5£442
søn. 16/617:22STL - LHR
3 stops43h 33mMultiple Airlines
Deal found 16/5£443
lør. 27/717:30STL - LHR
2 stops36h 50mUnited Airlines
Deal found 16/5£449
ons. 12/615:27STL - LHR
2 stops13h 23mAmerican Airlines
Deal found 16/5£460

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 844,321 searches. Data last updated 17 maj 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£506 - £710

Route

Depart

Return

Price

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

man. 30/9

2 stops21h 35m

London Heathrow

tir. 15/10

2 stops22h 55m

£506

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

man. 23/9

1 stop30h 35m

London Heathrow

tor. 3/10

1 stop29h 30m

£578

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

man. 23/9

1 stop16h 00m

London Heathrow

tor. 3/10

1 stop17h 35m

£579

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

lør. 10/8

1 stop11h 36m

London Heathrow

lør. 31/8

1 stop12h 42m

£592

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

ons. 5/6

1 stop11h 38m

London Heathrow

tir. 11/6

1 stop16h 14m

£593

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

søn. 9/6

2 stops14h 40m

London Heathrow

ons. 19/6

2 stops17h 05m

£594

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

ons. 14/8

1 stop14h 25m

London Heathrow

tir. 20/8

1 stop13h 44m

£596

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

ons. 5/6

2 stops17h 42m

London Heathrow

tir. 11/6

1 stop13h 48m

£600

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

søn. 28/7

1 stop12h 06m

London Heathrow

tir. 6/8

1 stop19h 58m

£710

Flights are sorted by cheapest first

Deals found on 16/5

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 12 May 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. Thursday afternoons 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 £424 while a return flight costs £594. Price data was last updated on 12 May 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to London Heathrow Airport (average of £110). Flying from St. Louis to London Heathrow Airport in July is currently the most expensive (average of £165). 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

£87

February

£98

March

£94

April

£103

May

£108

June

£129

July

£130

August

£114

September

£109

October

£125

November

£91

December

£95

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 17 maj 2024.
Read reviews from past customers who have flown United Airlines, Air Canada and American Airlines from St. Louis to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
10,673 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.4

Overall

8.0

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
8.0
Very Good
10,673 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.4

Overall

8.0

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
1,568 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.4

Overall

8.0

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
1,376 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.4

Overall

8.0

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
735 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.4

Overall

8.0

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.

United Airlines
7.4
Good
10,924 reviews
Delta
8.0
Very Good
10,673 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

8.0

Food

7.4

Overall

8.0

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 £506, but on average you can expect to pay £574.

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

    There are currently 20+ 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 £578, was found to be the cheapest airline from St. Louis to London Heathrow Airport.Alternate airlines flying return to your destination include Air Canada and British Airways. You may be able to fly from St. Louis to London Heathrow Airport for 18% 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 £429. However, be on the lookout for offers from United Airlines and American Airlines, 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 16/5.

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 844,321 searches. Data last updated 17 maj 2024.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£438Average£597FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£489Average£611FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£537Average£571FlexibilityNo 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.
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Prem Econ Class
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Why should you use Cheapflights to find cheap flight tickets from St. Louis to Heathrow?

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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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