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Cheap flights from St. Louis to London Heathrow Airport from £320

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 14/7. 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
23 May — 30 May1
1 adult
Thu 23/5
Thu 30/5

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 18 May 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 Virgin Atlantic flights from St. Louis to Heathrow

Explore cheap flight options specifically provided by Virgin Atlantic 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 835,321 searches. Data last updated 18 May 2024.
Consider these cheap Virgin Atlantic flights we've found departing from St. Louis to London. Deals update often to give you more flight options matching your criteria
Tue 8/1010:10STL - LHR
1 stop14h 35mVirgin Atlantic
Wed 23/1011:35LHR - STL
1 stop13h 34mVirgin Atlantic
Deal found 17/5£568
Tue 17/917:05STL - LHR
1 stop14h 10mVirgin Atlantic
Tue 1/1013:55LHR - STL
1 stop15h 40mVirgin Atlantic
Deal found 17/5£570
Tue 4/606:11STL - LHR
1 stop19h 04mVirgin Atlantic
Thu 20/611:30LHR - STL
2 stops16h 25mVirgin Atlantic
Deal found 17/5£647
Tue 4/606:11STL - LHR
1 stop19h 04mVirgin Atlantic
Thu 20/615:55LHR - STL
1 stop13h 48mVirgin Atlantic
Deal found 17/5£652
Wed 24/717:25STL - LHR
1 stop13h 50mVirgin Atlantic
Wed 31/711:35LHR - STL
1 stop18h 09mVirgin Atlantic
Deal found 17/5£737

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 835,321 searches. Data last updated 18 May 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.
Tue 8/1010:10STL - LHR
1 stop14h 25mAir Canada
Wed 23/1006:50LHR - STL
2 stops20h 15mAir Canada
Deal found 17/5£572
Sun 15/912:00STL - LHR
1 stop12h 30mAir Canada
Thu 26/914:05LHR - STL
1 stop13h 00mAir Canada
Deal found 17/5£583
Wed 25/910:10STL - LHR
2 stops14h 20mAir Canada
Tue 8/1014:05LHR - STL
1 stop13h 00mAir Canada
Deal found 17/5£585
Wed 18/916:05STL - LHR
1 stop11h 30mAir Canada
Tue 24/919:30LHR - STL
2 stops30h 30mAir Canada
Deal found 17/5£600
Sun 1/912:00STL - LHR
1 stop16h 00mAir Canada
Sun 15/909:30LHR - STL
1 stop17h 35mAir Canada
Deal found 17/5£622
Wed 11/912:00STL - LHR
1 stop12h 30mAir Canada
Sat 21/908:30LHR - STL
1 stop12h 50mAir Canada
Deal found 18/5£627
Tue 13/812:00STL - LHR
1 stop12h 30mAir Canada
Mon 19/808:40LHR - STL
2 stops18h 25mAir Canada
Deal found 17/5£630
Wed 18/912:00STL - LHR
1 stop12h 30mAir Canada
Tue 24/912:05LHR - STL
1 stop15h 00mAir Canada
Deal found 17/5£682
Fri 30/812:00STL - LHR
1 stop12h 30mAir Canada
Thu 12/912:05LHR - STL
1 stop15h 00mAir Canada
Deal found 16/5£736

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 835,321 searches. Prices were last updated on 18 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 21/506:00STL - LHR
2 stops18h 30mUnited Airlines
Wed 29/508:40LHR - STL
2 stops19h 07mUnited Airlines
Deal found 17/5£584
Mon 20/510:10STL - LHR
1 stop16h 20mUnited Airlines
Wed 5/606:50LHR - STL
2 stops20h 54mUnited Airlines
Deal found 17/5£585
Tue 21/511:00STL - LHR
1 stop13h 30mAir Canada
Thu 30/514:05LHR - STL
1 stop13h 00mAir Canada
Deal found 17/5£585
Tue 21/511:10STL - LHR
1 stop12h 45mMultiple Airlines
Wed 29/514:05LHR - STL
1 stop13h 00mMultiple Airlines
Deal found 17/5£588
Tue 21/510:20STL - LHR
1 stop14h 55mDelta
Tue 28/506:15LHR - STL
2 stops18h 26mDelta
Deal found 17/5£590
Mon 20/515:15STL - LHR
1 stop14h 30mUnited Airlines
Wed 5/606:30LHR - STL
1 stop13h 00mUnited Airlines
Deal found 17/5£591
Tue 21/510:20STL - LHR
2 stops15h 45mDelta
Tue 28/506:15LHR - STL
2 stops18h 26mDelta
Deal found 17/5£594
Tue 21/514:18STL - LHR
2 stops15h 57mDelta
Thu 30/506:15LHR - STL
2 stops17h 07mDelta
Deal found 17/5£595
Tue 4/606:11STL - LHR
1 stop19h 04mVirgin Atlantic
Thu 20/611:30LHR - STL
2 stops16h 25mVirgin Atlantic
Deal found 17/5£647

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 835,321 searches. Data last updated 18 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 8/1006:00STL - LHR
2 stops33h 40mMultiple Airlines
Wed 23/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 17/5£502
Wed 25/910:00STL - LHR
2 stops27h 30mMultiple Airlines
Tue 8/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 17/5£507
Wed 25/910:00STL - LHR
2 stops29h 40mMultiple Airlines
Tue 8/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 18/5£508
Tue 17/914:05STL - LHR
2 stops21h 35mMultiple Airlines
Tue 1/1006:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 17/5£526
Sun 15/906:00STL - LHR
2 stops31h 30mMultiple Airlines
Thu 26/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 17/5£531
Wed 18/910:10STL - LHR
2 stops23h 50mMultiple Airlines
Tue 24/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 18/5£536
Tue 17/907:10STL - LHR
2 stops28h 30mMultiple Airlines
Tue 24/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 18/5£541
Wed 11/911:51STL - LHR
2 stops22h 09mMultiple Airlines
Sat 21/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 17/5£547
Wed 11/914:05STL - LHR
2 stops21h 35mMultiple Airlines
Sat 21/906:40LHR - STL
2 stops22h 55mMultiple Airlines
Deal found 18/5£547

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 835,321 searches. Data last updated 18 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.
Fri 24/510:20STL - LHR
1 stop14h 55mDelta
Mon 27/508:40LHR - STL
2 stops18h 54mDelta
Deal found 17/5£727
Fri 24/510:20STL - LHR
1 stop14h 55mAir France
Mon 27/509:20LHR - STL
1 stop18h 32mAir France
Deal found 17/5£730
Fri 24/514:00STL - LHR
1 stop16h 10mAmerican Airlines
Wed 29/509:15LHR - STL
1 stop20h 07mAmerican Airlines
Deal found 17/5£747
Fri 24/510:20STL - LHR
1 stop14h 55mDelta
Wed 29/506:15LHR - STL
2 stops17h 07mDelta
Deal found 17/5£749
Fri 24/515:25STL - LHR
1 stop13h 15mLufthansa
Tue 28/520:25LHR - STL
2 stops25h 16mLufthansa
Deal found 17/5£785
Sun 26/511:00STL - LHR
1 stop13h 30mAir Canada
Tue 11/609:30LHR - STL
1 stop17h 35mAir Canada
Deal found 17/5£826
Fri 24/518:12STL - LHR
2 stops12h 03mDelta
Wed 29/511:30LHR - STL
2 stops16h 04mDelta
Deal found 17/5£827
Sun 26/506:08STL - LHR
2 stops18h 22mUnited Airlines
Tue 11/606:50LHR - STL
2 stops20h 54mUnited Airlines
Deal found 17/5£831
Fri 24/514:00STL - LHR
1 stop16h 10mAmerican Airlines
Sun 2/609:15LHR - STL
1 stop12h 13mAmerican Airlines
Deal found 17/5£913

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 835,321 searches. Data last updated 18 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.
Sun 14/718:41STL - LHR
3 stops35h 14mMultiple Airlines
Deal found 18/5£320
Mon 15/715:55STL - LHR
3 stops22h 25mMultiple Airlines
Deal found 17/5£336
Wed 23/1012:15STL - LHR
3 stops17h 40mMultiple Airlines
Deal found 17/5£344
Sat 13/719:33STL - LHR
3 stops35h 52mMultiple Airlines
Deal found 17/5£356
Wed 14/812:15STL - LHR
3 stops17h 40mMultiple Airlines
Deal found 17/5£362
Fri 12/717:25STL - LHR
3 stops36h 30mMultiple Airlines
Deal found 17/5£380
Fri 12/717:19STL - LHR
2 stops36h 36mMultiple Airlines
Deal found 17/5£393
Tue 25/619:29STL - LHR
3 stops44h 06mMultiple Airlines
Deal found 17/5£408
Sun 14/713:07STL - LHR
1 stop12h 38mIberia
Deal found 18/5£422

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 835,321 searches. Data last updated 18 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£502 - £724

Route

Depart

Return

Price

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 8/10

2 stops33h 40m

London Heathrow

Wed 23/10

2 stops22h 55m

£502

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 8/10

1 stop14h 35m

London Heathrow

Wed 23/10

1 stop13h 34m

£568

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 8/10

1 stop14h 25m

London Heathrow

Wed 23/10

2 stops20h 15m

£572

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 16/10

1 stop10h 57m

London Heathrow

Wed 23/10

2 stops15h 46m

£576

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 14/8

1 stop14h 10m

London Heathrow

Wed 21/8

2 stops17h 12m

£591

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sat 10/8

1 stop10h 10m

London Heathrow

Sat 31/8

1 stop13h 32m

£592

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 13/8

1 stop16h 21m

London Heathrow

Tue 20/8

1 stop16h 05m

£594

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 12/6

2 stops17h 29m

London Heathrow

Wed 19/6

2 stops19h 04m

£697

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 7/8

2 stops20h 10m

London Heathrow

Sun 11/8

1 stop16h 54m

£724

Flights are sorted by cheapest first

Deals found on 17/5

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 £369 while a return flight costs £602. 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 18 May 2024.
Read reviews from past customers who have flown Virgin Atlantic, Air Canada and United 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
10,647 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

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
10,647 reviews
Delta
8.0
Very Good
10,647 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

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
1,561 reviews
Delta
8.0
Very Good
10,647 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

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
1,374 reviews
Delta
8.0
Very Good
10,647 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

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
733 reviews
Delta
8.0
Very Good
10,647 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

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.

Austrian Airlines
7.7
Good
1,049 reviews
Delta
8.0
Very Good
10,647 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Food

7.4

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 £502, but on average you can expect to pay £551.

  • Are there last-minute flights available from St. Louis to London Heathrow Airport for under £800?

    There are currently 20+ open flights from St. Louis to London Heathrow Airport within the next 7 days for less than £800.

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

    Virgin Atlantic, at £568, 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 United Airlines. You may be able to fly from St. Louis to London Heathrow Airport for 20% 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 Iberia, with whom users have recently found tickets for as low as £422. 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 18/5.

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 835,321 searches. Data last updated 18 May 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.
First Class
Business Class
Prem Econ Class
Economy class

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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 St. Louis to Heathrow?

Cheapflights helps you search for flights from St. Louis to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Heathrow?

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?

Yes! Cheapflights helps users easily find flights from St. Louis to Heathrow with no change fees.

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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