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Cheap flights from St. Louis (STL) to Heathrow (LHR) from $427

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 8/18. 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
May 13 — May 201
From?
To?
Mon 5/13
Mon 5/20
1 adult, Economy
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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 Saturday

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 May 8, 2024.

Popular in

June

Cheapest in

February

Round-trip from

$643

One-way from

$583
High demand for flights, 42% potential price rise
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Best time to find cheap flights, 21% potential price drop
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From Lambert-St Louis to London Heathrow
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One-way flight from Lambert-St Louis to London Heathrow
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What is the cheapest day to fly round-trip from St. Louis to London Heathrow Airport?

Flights from St. Louis to London Heathrow Airport are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London Heathrow Airport.

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

Find a great deal and save up to 13% by booking at least 10 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to London Heathrow Airport within the next two weeks, with the cheapest ticket starting at $586.

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

Flights from St. Louis to London Heathrow Airport lean towards being more expensive in June. Prices are generally better when you fly from St. Louis to London Heathrow Airport in February, with the cheapest ticket starting at $621.

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

One of the essential ways to save on airfare from St. Louis to London Heathrow Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 14% on airfare.

Cheap British Airways flights from St. Louis to Heathrow

Explore cheap flight options specifically provided by British Airways 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 2,752,338 searches. Data last updated May 8, 2024.
Find some of the cheapest British Airways flights traveling from St. Louis to London. Deals update often to give you more flight options matching your criteria
Mon 8/124:18 pmSTL - LHR
1 stop16h 07mBritish Airways
Mon 8/267:35 pmLHR - STL
2 stops31h 24mBritish Airways
Deal found 5/7$695
Tue 8/136:10 pmSTL - LHR
1 stop12h 35mBritish Airways
Mon 8/197:35 pmLHR - STL
2 stops29h 26mBritish Airways
Deal found 5/7$771
Sat 10/56:21 pmSTL - LHR
1 stop21h 49mBritish Airways
Sun 10/138:10 amLHR - STL
1 stop13h 59mBritish Airways
Deal found 5/7$833
Wed 9/256:21 pmSTL - LHR
1 stop9h 59mBritish Airways
Tue 10/18:35 pmLHR - STL
2 stops31h 49mBritish Airways
Deal found 5/7$852
Wed 6/56:00 amSTL - LHR
1 stop10h 10mBritish Airways
Mon 6/107:35 pmLHR - STL
2 stops31h 21mBritish Airways
Deal found 5/8$917
Fri 6/71:42 pmSTL - LHR
1 stop12h 08mBritish Airways
Wed 6/192:25 pmLHR - STL
1 stop13h 37mBritish Airways
Deal found 5/8$950
Fri 6/76:08 pmSTL - LHR
1 stop10h 12mBritish Airways
Mon 6/173:35 pmLHR - STL
1 stop12h 27mBritish Airways
Deal found 5/8$1,000
Sun 6/166:00 amSTL - LHR
1 stop10h 10mBritish Airways
Thu 7/46:10 amLHR - STL
2 stops17h 50mBritish Airways
Deal found 5/7$1,024
Mon 6/177:47 pmSTL - LHR
1 stop12h 38mBritish Airways
Mon 7/17:25 pmLHR - STL
2 stops27h 53mBritish Airways
Deal found 5/7$1,033

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 2,752,338 searches. Data last updated May 8, 2024.
Take a gander at the lowest prices we've found on United Airlines flights from St. Louis to London. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Wed 8/148:05 amSTL - LHR
1 stop15h 50mUnited Airlines
Wed 8/212:05 pmLHR - STL
2 stops26h 02mUnited Airlines
Deal found 5/7$733
Sat 8/104:05 pmSTL - LHR
1 stop32h 30mUnited Airlines
Sat 8/318:30 amLHR - STL
1 stop12h 51mUnited Airlines
Deal found 5/7$745
Wed 9/45:32 pmSTL - LHR
1 stop11h 38mUnited Airlines
Fri 9/134:00 pmLHR - STL
2 stops28h 53mUnited Airlines
Deal found 5/7$756
Sat 8/105:30 pmSTL - LHR
2 stops34h 10mUnited Airlines
Sat 8/318:30 amLHR - STL
1 stop14h 41mUnited Airlines
Deal found 5/7$759
Tue 5/2111:00 amSTL - LHR
1 stop13h 30mUnited Airlines
Sun 6/26:50 amLHR - STL
2 stops20h 54mUnited Airlines
Deal found 5/7$792
Tue 5/2111:00 amSTL - LHR
1 stop13h 30mUnited Airlines
Sun 6/28:30 amLHR - STL
1 stop14h 42mUnited Airlines
Deal found 5/7$801
Fri 8/1611:25 amSTL - LHR
2 stops13h 45mUnited Airlines
Tue 8/2010:35 amLHR - STL
1 stop16h 01mUnited Airlines
Deal found 5/6$809
Sat 8/175:30 pmSTL - LHR
1 stop30h 25mUnited Airlines
Sun 8/2510:35 amLHR - STL
1 stop16h 01mUnited Airlines
Deal found 5/8$811
Fri 9/65:01 pmSTL - LHR
1 stop12h 34mUnited Airlines
Fri 9/132:05 pmLHR - STL
2 stops15h 02mUnited Airlines
Deal found 5/7$822

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 2,752,338 searches. Prices were last updated on May 8, 2024.
Scroll through some of the best deals on flights from St. Louis to London in 2024. Check back soon for alternative fares.
Tue 5/1411:00 amSTL - LHR
1 stop13h 30mAir Canada
Thu 5/302:05 pmLHR - STL
1 stop13h 00mAir Canada
Deal found 5/7$741
Sun 5/129:50 amSTL - LHR
2 stops14h 40mAir Canada
Fri 5/319:30 amLHR - STL
1 stop17h 35mAir Canada
Deal found 5/7$746
Tue 5/219:50 amSTL - LHR
2 stops14h 40mAir Canada
Tue 5/289:30 amLHR - STL
2 stops16h 31mAir Canada
Deal found 5/8$752
Sun 5/125:55 amSTL - LHR
1 stop10h 15mAmerican Airlines
Fri 5/319:15 amLHR - STL
1 stop16h 15mAmerican Airlines
Deal found 5/7$754
Tue 5/214:05 pmSTL - LHR
2 stops14h 55mMultiple Airlines
Thu 5/309:30 amLHR - STL
2 stops16h 31mMultiple Airlines
Deal found 5/7$770
Sun 5/122:18 pmSTL - LHR
2 stops15h 57mDelta
Fri 5/3111:30 amLHR - STL
2 stops16h 22mDelta
Deal found 5/7$773
Tue 5/2111:00 amSTL - LHR
1 stop13h 30mUnited Airlines
Sun 6/26:50 amLHR - STL
2 stops20h 54mUnited Airlines
Deal found 5/7$792
Tue 5/2111:00 amSTL - LHR
1 stop13h 30mAir Canada
Sun 6/28:30 amLHR - STL
1 stop17h 31mAir Canada
Deal found 5/7$796
Tue 5/216:11 amSTL - LHR
1 stop19h 04mDelta
Mon 5/2711:30 amLHR - STL
2 stops16h 22mDelta
Deal found 5/7$798

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 2,752,338 searches. Data last updated May 8, 2024.
Scroll through some of the best deals on flights from St. Louis to London in 2024. Check back soon for alternative fares.
Wed 9/2510:00 amSTL - LHR
2 stops25h 40mMultiple Airlines
Tue 10/86:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/8$642
Wed 9/1810:10 amSTL - LHR
2 stops27h 20mMultiple Airlines
Tue 9/246:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/7$655
Wed 9/1811:51 amSTL - LHR
2 stops25h 39mMultiple Airlines
Tue 9/246:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/8$672
Fri 10/2511:51 amSTL - LHR
2 stops22h 09mMultiple Airlines
Wed 10/306:40 amLHR - STL
2 stops21h 55mMultiple Airlines
Deal found 5/7$692
Mon 8/124:18 pmSTL - LHR
1 stop16h 07mBritish Airways
Mon 8/267:35 pmLHR - STL
2 stops31h 24mBritish Airways
Deal found 5/7$695
Fri 9/67:10 amSTL - LHR
2 stops26h 50mMultiple Airlines
Wed 9/116:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 5/6$722
Wed 8/148:05 amSTL - LHR
1 stop15h 50mUnited Airlines
Wed 8/212:05 pmLHR - STL
2 stops26h 02mUnited Airlines
Deal found 5/7$733
Tue 5/1411:00 amSTL - LHR
1 stop13h 30mAir Canada
Thu 5/302:05 pmLHR - STL
1 stop13h 00mAir Canada
Deal found 5/7$741
Sat 8/104:05 pmSTL - LHR
1 stop32h 30mUnited Airlines
Sat 8/318:30 amLHR - STL
1 stop12h 51mUnited Airlines
Deal found 5/7$745

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 2,752,338 searches. Data last updated May 8, 2024.
Have a look at some of the last-minute flights available departing from St. Louis to London. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Tue 5/1411:00 amSTL - LHR
1 stop13h 30mAir Canada
Thu 5/302:05 pmLHR - STL
1 stop13h 00mAir Canada
Deal found 5/7$741
Sun 5/129:50 amSTL - LHR
2 stops14h 40mAir Canada
Fri 5/319:30 amLHR - STL
1 stop17h 35mAir Canada
Deal found 5/7$746
Tue 5/219:50 amSTL - LHR
2 stops14h 40mAir Canada
Tue 5/289:30 amLHR - STL
2 stops16h 31mAir Canada
Deal found 5/8$752
Sun 5/125:55 amSTL - LHR
1 stop10h 15mAmerican Airlines
Fri 5/319:15 amLHR - STL
1 stop16h 15mAmerican Airlines
Deal found 5/7$754
Tue 5/214:05 pmSTL - LHR
2 stops14h 55mMultiple Airlines
Thu 5/309:30 amLHR - STL
2 stops16h 31mMultiple Airlines
Deal found 5/7$770
Sun 5/122:18 pmSTL - LHR
2 stops15h 57mDelta
Fri 5/3111:30 amLHR - STL
2 stops16h 22mDelta
Deal found 5/7$773
Tue 5/2111:00 amSTL - LHR
1 stop13h 30mUnited Airlines
Sun 6/26:50 amLHR - STL
2 stops20h 54mUnited Airlines
Deal found 5/7$792
Tue 5/2111:00 amSTL - LHR
1 stop13h 30mAir Canada
Sun 6/28:30 amLHR - STL
1 stop17h 31mAir Canada
Deal found 5/7$796
Tue 5/216:11 amSTL - LHR
1 stop19h 04mDelta
Mon 5/2711:30 amLHR - STL
2 stops16h 22mDelta
Deal found 5/7$798

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 2,752,338 searches. Data last updated May 8, 2024.
Users in need of a one-way flight from St. Louis to London can choose from these deals. Users needing a return flight from St. Louis to London should utilize the search form above.
Sun 8/1812:45 pmSTL - LHR
3 stops25h 35mMultiple Airlines
Deal found 5/6$427
Tue 8/1312:15 pmSTL - LHR
3 stops17h 40mMultiple Airlines
Deal found 5/7$446
Fri 8/236:05 pmSTL - LHR
3 stops35h 50mMultiple Airlines
Deal found 5/6$476
Wed 7/109:26 pmSTL - LHR
3 stops32h 29mMultiple Airlines
Deal found 5/7$531
Wed 5/227:23 pmSTL - LHR
3 stops58h 37mMultiple Airlines
Deal found 5/7$535
Tue 8/1312:00 pmSTL - LHR
1 stop16h 00mAir Canada
Deal found 5/7$544
Wed 7/108:25 amSTL - LHR
1 stop16h 20mUnited Airlines
Deal found 5/7$548
Sat 7/274:05 pmSTL - LHR
1 stop32h 30mUnited Airlines
Deal found 5/7$550
Sat 9/75:01 pmSTL - LHR
1 stop32h 39mUnited Airlines
Deal found 5/7$562

Find flights from St. Louis to Heathrow within your budget

Customize 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 2,752,338 searches. Data last updated May 8, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$642 - $911

Route

Depart

Return

Price

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 9/25

2 stops25h 40m

London Heathrow

Tue 10/8

2 stops22h 55m

$642

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 8/12

1 stop16h 07m

London Heathrow

Mon 8/26

2 stops31h 24m

$695

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 8/14

1 stop15h 50m

London Heathrow

Wed 8/21

2 stops26h 02m

$733

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 5/21

1 stop13h 30m

London Heathrow

Thu 5/30

1 stop13h 00m

$741

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 9/25

1 stop11h 12m

London Heathrow

Tue 10/8

1 stop12h 04m

$748

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 9/4

1 stop12h 34m

London Heathrow

Wed 9/18

2 stops16h 01m

$766

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 9/4

2 stops25h 20m

London Heathrow

Fri 9/13

2 stops21h 42m

$779

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sun 6/9

1 stop10h 12m

London Heathrow

Wed 6/19

1 stop13h 37m

$900

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Sun 6/9

2 stops14h 40m

London Heathrow

Tue 6/18

1 stop13h 48m

$911

Flights are sorted by cheapest first

Deals found on 5/8

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Heathrow. Price data was last updated on May 5, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to London Heathrow Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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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 $513 while a round-trip flight costs $768. Price data was last updated on May 5, 2024.

Currently, November is the cheapest month in which you can book a flight from St. Louis to London Heathrow Airport (average of $653). Flying from St. Louis to London Heathrow Airport in June is currently the most expensive (average of $1,158). 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

$673

February

$663

March

$715

April

$692

May

$735

June

$1,158

July

$980

August

$776

September

$743

October

$710

November

$653

December

$671

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

39.2 - 62.6 °F

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 May 8, 2024.
Get a feel of what it's like to fly with British Airways, United Airlines and Air Canada from St. Louis to London by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,789 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Entertainment

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
8.1
Very good
10,789 reviews
Delta
8.1
Very good
10,789 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Entertainment

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
1,592 reviews
Delta
8.1
Very good
10,789 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Entertainment

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
1,379 reviews
Delta
8.1
Very good
10,789 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Entertainment

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
739 reviews
Delta
8.1
Very good
10,789 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Entertainment

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.

Air France
7.5
Good
1,777 reviews
Delta
8.1
Very good
10,789 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Entertainment

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?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to London Heathrow from St. Louis. Booking flights from Lambert-St Louis (STL) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 11 different airlines.

  • Can I find flights from St. Louis to London Heathrow Airport for under $700 on Cheapflights?

    Yes, there are multiple flights from St. Louis to London Heathrow Airport for under $700. The cheapest flight booked recently is on Multiple Airlines for just $642, but on average you can expect to pay $731.

  • 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?

    According to our current data, British Airways ($695), United Airlines ($733), and Air Canada ($741) offers the cheapest pricing from St. Louis to London Heathrow Airport. British Airways is 23% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as $544. Users have also found prices from $548 and $583 on United Airlines and American Airlines, respectively.

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

    The most popular airlines flying from St. Louis to London Heathrow Airport are American Airlines, Air Canada and Air France. Something to consider prior to booking your flight.

  • 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 vacation 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 5/8.

See more FAQs

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Alternative routes for St. Louis to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.

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Top 10 airlines flying from St. Louis to Heathrow

Discover the top 10 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 2,752,338 searches. Data last updated May 8, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$587Average$861FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest$619Average$786FlexibilityNo cancel feeOn-time77%
Search Iberia flights
FinnairCheapest$643Average$840FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest$652Average$869FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest$654Average$793FlexibilityNo cancel feeOn-time72%
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