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Cheap flights from St. Louis (STL) to Heathrow (LHR) from $401

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 7/16. 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 5 — May 121
From?
To?
Sun 5/5
Sun 5/12
1 adult, Economy
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The best prices from Lambert-St Louis to London Heathrow are usually found in February or November, booked 19 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 April 30, 2024.

Popular in

June

Cheapest in

February

Round-trip from

$643

One-way from

$583
High demand for flights, 34% potential price rise
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Best time to find cheap flights, 22% 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 134% by booking at least 35 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 $1,161.

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 $656.

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 15% on airfare.

Cheap American Airlines flights from St. Louis to Heathrow

Explore cheap flight options specifically provided by American 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 2,948,547 searches. Data last updated April 30, 2024.
Find some of the cheapest American Airlines flights traveling from St. Louis to London. Deals update often to give you more flight options matching your criteria
Mon 8/1212:48 pmSTL - LHR
1 stop14h 17mAmerican Airlines
Fri 8/2312:15 pmLHR - STL
1 stop17h 08mAmerican Airlines
Deal found 4/29$787
Fri 9/206:26 amSTL - LHR
1 stop9h 44mAmerican Airlines
Fri 9/273:15 pmLHR - STL
1 stop11h 52mAmerican Airlines
Deal found 4/29$837
Sun 9/14:18 pmSTL - LHR
1 stop12h 27mAmerican Airlines
Mon 9/99:15 amLHR - STL
1 stop14h 02mAmerican Airlines
Deal found 4/29$838
Tue 5/1411:17 amSTL - LHR
1 stop14h 28mAmerican Airlines
Thu 5/309:15 amLHR - STL
1 stop20h 07mAmerican Airlines
Deal found 4/29$879
Mon 5/135:55 amSTL - LHR
1 stop10h 15mAmerican Airlines
Sun 5/269:15 amLHR - STL
1 stop12h 13mAmerican Airlines
Deal found 4/29$929
Sat 8/246:00 amSTL - LHR
1 stop10h 10mAmerican Airlines
Fri 8/302:25 pmLHR - STL
1 stop11h 22mAmerican Airlines
Deal found 4/29$965
Fri 5/172:00 pmSTL - LHR
1 stop11h 30mAmerican Airlines
Sun 5/263:15 pmLHR - STL
1 stop14h 07mAmerican Airlines
Deal found 4/29$977
Wed 5/810:46 amSTL - LHR
1 stop16h 19mAmerican Airlines
Wed 5/229:15 amLHR - STL
1 stop16h 15mAmerican Airlines
Deal found 4/29$1,021
Wed 7/243:18 pmSTL - LHR
1 stop11h 47mAmerican Airlines
Sat 8/39:45 amLHR - STL
1 stop12h 27mAmerican Airlines
Deal found 4/29$1,028

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 2,948,547 searches. Data last updated April 30, 2024.
Take a gander at the lowest prices we've found on Air Canada 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.
Mon 5/1311:00 amSTL - LHR
1 stop13h 30mAir Canada
Mon 5/209:30 amLHR - STL
1 stop17h 35mAir Canada
Deal found 4/29$806
Sat 9/144:05 pmSTL - LHR
1 stop32h 30mAir Canada
Sat 9/2812:05 pmLHR - STL
1 stop15h 00mAir Canada
Deal found 4/28$872
Sun 9/110:10 amSTL - LHR
2 stops14h 20mAir Canada
Sun 9/158:30 amLHR - STL
2 stops18h 35mAir Canada
Deal found 4/29$921

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

Find cheap flight options from St. Louis to Heathrow specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,948,547 searches. Prices were last updated on April 30, 2024.
Scroll through some of the best deals on flights from St. Louis to London in 2024. Check back soon for alternative fares.
Tue 5/2112:00 pmSTL - LHR
1 stop12h 45mDelta
Tue 5/2811:30 amLHR - STL
2 stops18h 10mDelta
Deal found 4/29$783
Tue 5/2110:10 amSTL - LHR
2 stops14h 35mDelta
Thu 5/306:15 amLHR - STL
2 stops16h 31mDelta
Deal found 4/29$788
Tue 5/2111:40 amSTL - LHR
1 stop16h 40mAmerican Airlines
Thu 5/3012:15 pmLHR - STL
1 stop17h 07mAmerican Airlines
Deal found 4/29$789
Mon 5/139:59 amSTL - LHR
1 stop21h 16mVirgin Atlantic
Mon 5/2011:30 amLHR - STL
2 stops16h 22mVirgin Atlantic
Deal found 4/29$804
Mon 5/1311:00 amSTL - LHR
1 stop13h 30mAir Canada
Mon 5/209:30 amLHR - STL
1 stop17h 35mAir Canada
Deal found 4/29$806
Mon 5/1312:00 pmSTL - LHR
2 stops13h 05mVirgin Atlantic
Mon 5/2011:30 amLHR - STL
2 stops16h 04mVirgin Atlantic
Deal found 4/29$808
Mon 5/137:10 pmSTL - LHR
1 stop12h 05mKLM
Mon 5/201:55 pmLHR - STL
1 stop12h 30mKLM
Deal found 4/29$810
Tue 5/146:30 pmSTL - LHR
1 stop12h 45mDelta
Thu 5/306:15 amLHR - STL
2 stops16h 31mDelta
Deal found 4/29$873
Tue 5/1412:00 pmSTL - LHR
2 stops16h 15mDelta
Thu 5/3011:30 amLHR - STL
2 stops16h 22mDelta
Deal found 4/29$878

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 2,948,547 searches. Data last updated April 30, 2024.
Scroll through some of the best deals on flights from St. Louis to London in 2024. Check back soon for alternative fares.
Wed 9/187:10 amSTL - LHR
2 stops28h 30mMultiple Airlines
Tue 9/246:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 4/30$641
Thu 9/196:00 amSTL - LHR
2 stops31h 30mMultiple Airlines
Tue 9/246:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 4/30$691
Wed 8/219:00 amSTL - LHR
1 stop19h 15mDelta
Fri 8/309:00 amLHR - STL
2 stops18h 29mDelta
Deal found 4/29$709
Wed 8/216:30 amSTL - LHR
1 stop18h 45mVirgin Atlantic
Wed 8/2812:10 pmLHR - STL
1 stop15h 07mVirgin Atlantic
Deal found 4/29$715
Wed 8/216:30 amSTL - LHR
1 stop18h 45mVirgin Atlantic
Tue 8/278:20 amLHR - STL
2 stops16h 54mVirgin Atlantic
Deal found 4/29$720
Wed 8/2112:00 pmSTL - LHR
1 stop12h 30mUnited Airlines
Thu 8/299:30 amLHR - STL
2 stops19h 26mUnited Airlines
Deal found 4/29$721
Wed 9/410:10 amSTL - LHR
2 stops24h 50mMultiple Airlines
Wed 9/186:40 amLHR - STL
2 stops22h 55mMultiple Airlines
Deal found 4/29$725
Thu 10/246:00 amSTL - LHR
2 stops33h 40mMultiple Airlines
Sat 11/26:40 amLHR - STL
2 stops21h 55mMultiple Airlines
Deal found 4/30$741
Thu 8/2212:00 pmSTL - LHR
1 stop13h 15mDelta
Fri 8/3011:30 amLHR - STL
2 stops15h 59mDelta
Deal found 4/29$759

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 2,948,547 searches. Data last updated April 30, 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.
Wed 5/812:53 pmSTL - LHR
1 stop11h 32mDelta
Wed 5/2211:30 amLHR - STL
2 stops18h 10mDelta
Deal found 4/29$1,017
Wed 5/810:46 amSTL - LHR
1 stop16h 19mAmerican Airlines
Wed 5/229:15 amLHR - STL
1 stop16h 15mAmerican Airlines
Deal found 4/29$1,021
Wed 5/812:00 pmSTL - LHR
2 stops15h 25mDelta
Wed 5/226:15 amLHR - STL
2 stops17h 07mDelta
Deal found 4/29$1,022
Wed 5/86:02 pmSTL - LHR
2 stops42h 08mMultiple Airlines
Wed 5/229:05 amLHR - STL
3 stops44h 12mMultiple Airlines
Deal found 4/29$12,716

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 2,948,547 searches. Data last updated April 30, 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.
Tue 7/1611:11 amSTL - LHR
3 stops18h 44mMultiple Airlines
Deal found 4/29$401
Thu 7/188:49 pmSTL - LHR
3 stops33h 06mMultiple Airlines
Deal found 4/29$477
Fri 7/198:35 pmSTL - LHR
3 stops33h 20mMultiple Airlines
Deal found 4/29$485
Sun 7/76:15 pmSTL - LHR
3 stops44h 05mMultiple Airlines
Deal found 4/29$499
Tue 5/287:23 pmSTL - LHR
3 stops44h 12mMultiple Airlines
Deal found 4/29$541
Wed 9/187:29 pmSTL - LHR
3 stops43h 21mMultiple Airlines
Deal found 4/29$550
Wed 7/1011:05 amSTL - LHR
1 stop14h 50mIberia
Deal found 4/29$571
Tue 7/162:05 pmSTL - LHR
1 stop16h 40mFinnair
Deal found 4/29$579
Wed 9/186:58 pmSTL - LHR
1 stop11h 12mAmerican Airlines
Deal found 4/29$583

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 2,948,547 searches. Data last updated April 30, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$641 - $901

Route

Depart

Return

Price

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 9/25

2 stops19h 55m

London Heathrow

Tue 10/1

2 stops22h 55m

$641

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 8/21

1 stop15h 50m

London Heathrow

Wed 8/28

2 stops18h 17m

$709

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 8/21

1 stop18h 45m

London Heathrow

Wed 8/28

1 stop15h 07m

$715

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 8/21

1 stop12h 30m

London Heathrow

Thu 8/29

2 stops19h 26m

$721

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 8/12

1 stop14h 17m

London Heathrow

Fri 8/23

1 stop17h 08m

$787

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 5/13

1 stop13h 30m

London Heathrow

Mon 5/20

1 stop17h 35m

$806

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 5/13

1 stop12h 05m

London Heathrow

Mon 5/20

1 stop12h 30m

$810

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Thu 9/19

1 stop9h 44m

London Heathrow

Mon 9/30

2 stops26h 17m

$820

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 10/9

2 stops19h 15m

London Heathrow

Wed 10/16

1 stop13h 00m

$901

Flights are sorted by cheapest first

Deals found on 4/29

When is the best time to book a flight from St. Louis to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Heathrow. Price data was last updated on January 28, 2024.
To ensure you get the cheapest price possible for a flight from St. Louis to London Heathrow Airport, you should look to book at least 19 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Search Deals

When is the cheapest time to fly from 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 April 28, 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 $521 while a round-trip flight costs $768. Price data was last updated on April 28, 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 $1,173). 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

$675

February

$664

March

$715

April

$700

May

$748

June

$1,173

July

$987

August

$779

September

$748

October

$712

November

$653

December

$672

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 April 30, 2024.
Get a feel of what it's like to fly with American Airlines, Air Canada and Lufthansa 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
10,895 reviews
Check prices

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very good
10,895 reviews
Delta
8.1
Very good
10,895 reviews
Check prices

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

KLM
7.9
Good
1,616 reviews
Delta
8.1
Very good
10,895 reviews
Check prices

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Finnair
7.8
Good
1,379 reviews
Delta
8.1
Very good
10,895 reviews
Check prices

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Virgin Atlantic
7.7
Good
743 reviews
Delta
8.1
Very good
10,895 reviews
Check prices

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Austrian Airlines
7.7
Good
1,078 reviews
Delta
8.1
Very good
10,895 reviews
Check prices

Food

7.4

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

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 $641, but on average you can expect to pay $753.

  • Are there last-minute flights available from St. Louis to London Heathrow Airport for under $1,100?

    There are currently 4+ open flights from St. Louis to London Heathrow Airport within the next 7 days for less than $1,100.

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

    According to our current data, Delta ($709), Virgin Atlantic ($715), and United Airlines ($721) offers the cheapest pricing from St. Louis to London Heathrow Airport. Delta 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 Iberia. According to our data, you can fly for as low as $571. Users have also found prices from $579 and $583 on Finnair 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 4/30.

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.

Kansas City to Heathrow flights
Kansas City to Gatwick flights
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Springfield to London City flights
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St. Louis to Luton flights
Joplin to Heathrow flights
St. Louis to Stansted flights

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 2,948,547 searches. Data last updated April 30, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$587Average$861FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest$620Average$791FlexibilityNo 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$796FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest$656Average$1,259FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
DeltaCheapest$660Average$832FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$665Average$1,034FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest$688Average$885FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest$699Average$1,093FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
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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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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

Deals for St. Louis to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights helps you find that perfect flight to Heathrow from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes, we can. To see specific flights from St. Louis to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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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