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St. Louis Lambert International Airport to Heathrow Airport flight

Explore the cheapest one-way and round-trip flights from St. Louis Lambert International Airport to Heathrow Airport over the next 90 days, with one-way fares from £268 and round-trip from £589. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Sat, Oct 17 | Iberia
      LHR 16:25
      9h 5m
      Direct
      STL 19:30
      London - St. Louis | Wed, Oct 21 | Iberia
      £937 £1,173
      20% off
      20% off
      £1,173 £937
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Sat, Oct 17 | British Airways
      LHR 16:25
      9h 5m
      Direct
      STL 19:30
      London - St. Louis | Wed, Oct 21 | British Airways
      £950 £1,173
      19% off
      19% off
      £1,173 £950
    • STL 16:05
      10h 25m
      1 stop
      LHR 08:30
      St. Louis - London | Mon, Dec 7 | Air Canada
      LHR 06:30
      13h 15m
      1 stop
      STL 13:45
      London - St. Louis | Sun, Dec 13 | Lufthansa
      £589 £1,173
      50% off
      50% off
      £1,173 £589
    • STL 17:29
      10h 56m
      1 stop
      LHR 10:25
      St. Louis - London | Wed, Nov 11 | American Airlines
      LHR 12:35
      12h 47m
      1 stop
      STL 19:22
      London - St. Louis | Wed, Nov 18 | American Airlines
      £591
      50% off
      £1,173 £591
    • STL 16:25
      11h 15m
      1 stop
      LHR 09:40
      St. Louis - London | Tue, Dec 1 | American Airlines
      LHR 11:45
      12h 46m
      1 stop
      STL 18:31
      London - St. Louis | Tue, Dec 8 | American Airlines
      £592
      50% off
      £1,173 £592
    • STL 17:27
      11h 58m
      1 stop
      LHR 10:25
      St. Louis - London | Tue, Oct 27 | Finnair
      LHR 11:50
      14h 29m
      1 stop
      STL 20:19
      London - St. Louis | Tue, Nov 3 | Finnair
      £592
      50% off
      £1,173 £592
    • STL 12:36
      11h 49m
      1 stop
      LHR 06:25
      St. Louis - London | Mon, Dec 7 | Virgin Atlantic
      LHR 08:55
      13h 29m
      1 stop
      STL 16:24
      London - St. Louis | Sun, Dec 13 | Delta Air Lines
      £593
      49% off
      £1,173 £593
    • STL 08:48
      17h 2m
      1 stop
      LHR 06:50
      St. Louis - London | Tue, Oct 27 | Iberia
      LHR 10:35
      15h 51m
      1 stop
      STL 20:26
      London - St. Louis | Tue, Nov 3 | Iberia
      £593
      49% off
      £1,173 £593
    • STL 16:05
      11h 25m
      1 stop
      LHR 08:30
      St. Louis - London | Tue, Oct 27 | Air Canada
      LHR 18:00
      27h 26m
      1 stop
      STL 15:26
      London - St. Louis | Tue, Nov 3 | Air Canada
      £595
      49% off
      £1,173 £595
    • STL 13:00
      17h 25m
      1 stop
      LON 14:00
      St. Louis - London | Sun, Oct 18 | Normal Airline
      LON 15:00
      6h
      Direct
      STL 16:00
      London - St. Louis | Tue, Oct 20 | Normal Airline
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    • Cheapest
      STL 13:58
      11h 22m
      1 stop
      LHR 07:20
      St. Louis - London | Thu, Dec 10 | American Airlines
      £268 £896
      70% off
      70% off
      £896 £268
    • STL 06:00
      18h 20m
      1 stop
      LHR 06:20
      St. Louis - London | Thu, Dec 10 | United Airlines
      £271 £896
      70% off
      70% off
      £896 £271
    • STL 09:50
      15h 10m
      1 stop
      LHR 07:00
      St. Louis - London | Thu, Dec 10 | Iberia
      £278 £896
      69% off
      69% off
      £896 £278
    • STL 09:50
      14h 25m
      1 stop
      LHR 06:15
      St. Louis - London | Thu, Dec 10 | British Airways
      £284
      68% off
      £896 £284
    • STL 09:45
      14h 35m
      1 stop
      LHR 06:20
      St. Louis - London | Thu, Dec 10 | Delta Air Lines
      £284
      68% off
      £896 £284
    • STL 09:50
      15h 10m
      1 stop
      LHR 07:00
      St. Louis - London | Sat, Nov 7 | Iberia
      £292
      67% off
      £896 £292
    • STL 10:25
      15h 25m
      1 stop
      LHR 07:50
      St. Louis - London | Sat, Nov 7 | KLM
      £296
      67% off
      £896 £296
    • STL 09:50
      15h 10m
      1 stop
      LHR 07:00
      St. Louis - London | Sat, Nov 7 | British Airways
      £296
      67% off
      £896 £296
    • STL 07:00
      17h 20m
      1 stop
      LHR 06:20
      St. Louis - London | Fri, Nov 6 | Delta Air Lines
      £296
      67% off
      £896 £296
    • STL 13:00
      17h 25m
      1 stop
      LON 14:00
      St. Louis - London | Sun, Oct 18 | Normal Airline
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    • Cheapest nonstop
      STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Tue, Oct 20 | Iberia
      £721 £891
      19% off
      19% off
      £891 £721
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Wed, Oct 21 | Iberia
      £721 £891
      19% off
      19% off
      £891 £721
    • STL 13:00
      17h 25m
      1 stop
      LON 14:00
      St. Louis - London | Sun, Oct 18 | Normal Airline
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    • Cheapest nonstop
      STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Tue, Oct 20 | Iberia
      £721 £959
      25% off
      25% off
      £959 £721
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Wed, Oct 21 | Iberia
      £721 £959
      25% off
      25% off
      £959 £721
    • STL 17:30
      12h 10m
      1 stop
      LHR 11:40
      St. Louis - London | Sun, Nov 22 | Virgin Atlantic
      £554 £959
      42% off
      42% off
      £959 £554
    • STL 12:29
      11h 56m
      1 stop
      LHR 06:25
      St. Louis - London | Sun, Nov 22 | Delta Air Lines
      £556
      42% off
      £959 £556
    • STL 13:08
      10h 47m
      1 stop
      LHR 05:55
      St. Louis - London | Sun, Nov 22 | United Airlines
      £566
      41% off
      £959 £566
    • STL 19:01
      10h 54m
      1 stop
      LHR 11:55
      St. Louis - London | Wed, Oct 21 | United Airlines
      £654
      32% off
      £959 £654
    • STL 14:40
      9h 55m
      1 stop
      LHR 06:35
      St. Louis - London | Wed, Oct 21 | Air Canada
      £683
      28% off
      £959 £683
    • STL 14:38
      10h 32m
      1 stop
      LHR 07:10
      St. Louis - London | Wed, Oct 21 | Virgin Atlantic
      £696
      27% off
      £959 £696
    • STL 14:25
      11h 25m
      1 stop
      LHR 07:50
      St. Louis - London | Fri, Nov 6 | Delta Air Lines
      £733
      24% off
      £959 £733
    • STL 13:00
      17h 25m
      1 stop
      LON 14:00
      St. Louis - London | Sun, Oct 18 | Normal Airline
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    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Tue, Oct 20 | American Airlines
      £790 £999
      21% off
      21% off
      £999 £790
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Wed, Oct 21 | British Airways
      £723 £999
      28% off
      28% off
      £999 £723
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Wed, Oct 21 | Finnair
      £794 £999
      21% off
      21% off
      £999 £794
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Tue, Oct 20 | British Airways
      £724
      28% off
      £999 £724
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Wed, Oct 21 | American Airlines
      £788
      21% off
      £999 £788
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Tue, Oct 20 | Iberia
      £721
      28% off
      £999 £721
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Wed, Oct 21 | Iberia
      £721
      28% off
      £999 £721
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Tue, Oct 20 | Finnair
      £809
      19% off
      £999 £809
    • STL 14:40
      9h 55m
      1 stop
      LHR 06:35
      St. Louis - London | Mon, Oct 19 | Air Canada
      £656
      34% off
      £999 £656
    • STL 13:00
      17h 25m
      1 stop
      LON 14:00
      St. Louis - London | Sun, Oct 18 | Normal Airline
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    • Cheapest nonstop
      STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Tue, Oct 20 | Iberia
      £721 £891
      19% off
      19% off
      £891 £721
    • STL 21:35
      8h
      Direct
      LHR 11:35
      St. Louis - London | Wed, Oct 21 | Iberia
      £721 £891
      19% off
      19% off
      £891 £721
    • STL 19:01
      10h 54m
      1 stop
      LHR 11:55
      St. Louis - London | Wed, Oct 21 | United Airlines
      £654 £891
      27% off
      27% off
      £891 £654
    • STL 14:40
      9h 55m
      1 stop
      LHR 06:35
      St. Louis - London | Wed, Oct 21 | Air Canada
      £683
      23% off
      £891 £683
    • STL 14:38
      10h 32m
      1 stop
      LHR 07:10
      St. Louis - London | Wed, Oct 21 | Virgin Atlantic
      £696
      22% off
      £891 £696
    • STL 13:00
      17h 25m
      1 stop
      LON 14:00
      St. Louis - London | Sun, Oct 18 | Normal Airline
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Displayed flight fares from St. Louis to London are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from St. Louis Lambert International Airport to Heathrow Airport?

The cheapest airline flying from St. Louis Lambert International Airport to Heathrow Airport is American Airlines (from £268) among 9 carriers operating this route. Based on Trip.com's latest 7-day flight data.

American Airlines
From £268
United Airlines
From £271
Iberia
From £278
Frontier Airlines
From £284
British Airways
From £284
KLM
From £296
Air France
From £296
Delta Air Lines
From £725
Virgin Atlantic
From £739

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What is the flight schedule from St. Louis Lambert International Airport to Heathrow Airport?

Check the schedule for flights from St. Louis to London and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AC8890

    St. Louis Lambert International Airport

    14:40

    STL

    1h 54m

    Direct

    17:34

    YYZ

    S M T W T F S
    Search

  2. AC856

    Toronto Pearson International Airport

    20:15

    YYZ

    7h 20m

    Direct

    08:35

    LHR

    S M - W T - S

  3. VS5370

    St. Louis Lambert International Airport

    17:15

    STL

    1h 39m

    Direct

    19:54

    ATL

    S M T W T F S
    Search

  4. VS4044

    Hartsfield–Jackson Atlanta International Airport

    17:05

    ATL

    8h 20m

    Direct

    06:25

    LHR

    S M T W T F S

  5. AC8688

    St. Louis Lambert International Airport

    13:25

    STL

    2h 31m

    Direct

    16:56

    YUL

    S M T W T F S
    Search

  6. AC866

    Montréal-Pierre Elliott Trudeau International Airport

    22:10

    YUL

    6h 50m

    Direct

    10:00

    LHR

    - M T - T F S

  7. DL1400

    St. Louis Lambert International Airport

    12:00

    STL

    1h 35m

    Direct

    14:35

    ATL

    S M T W T F S
    Search

  8. VS104

    Hartsfield–Jackson Atlanta International Airport

    18:25

    ATL

    7h

    Direct

    06:25

    LHR

    S M T W T F S

  9. AC8890

    St. Louis Lambert International Airport

    14:40

    STL

    1h 54m

    Direct

    17:34

    YYZ

    S M T W T F S
    Search

  10. AC858

    Toronto Pearson International Airport

    23:50

    YYZ

    7h

    Direct

    11:50

    LHR

    S M T W T F S

  11. BA6891

    St. Louis Lambert International Airport

    09:44

    STL

    2h 45m

    Direct

    13:29

    BOS

    - - - - - F -
    Search

  12. BA212

    Boston Logan International Airport

    19:35

    BOS

    6h 35m

    Direct

    07:10

    LHR

    S M T W T F S

  13. BA6891

    St. Louis Lambert International Airport

    09:44

    STL

    2h 45m

    Direct

    13:29

    BOS

    - - - - - F -
    Search

  14. BA1540

    Boston Logan International Airport

    19:25

    BOS

    6h 55m

    Direct

    07:20

    LHR

    S M T W T F S

  15. DL2868

    St. Louis Lambert International Airport

    10:35

    STL

    1h 34m

    Direct

    13:09

    DTW

    S M T W T F S
    Search

  16. DL016

    Detroit Metropolitan Wayne County Airport

    18:45

    DTW

    7h 25m

    Direct

    07:10

    LHR

    S M T W T F S

  17. DL5110

    St. Louis Lambert International Airport

    10:00

    STL

    2h 21m

    Direct

    13:21

    LGA

    S M T W T - -
    Search

  18. AC735

    LaGuardia Airport

    17:35

    LGA

    1h 29m

    Direct

    19:04

    YUL

    S M T W - F S

  19. AC864

    Montréal-Pierre Elliott Trudeau International Airport

    18:40

    YUL

    6h 50m

    Direct

    06:30

    LHR

    S M T W T F S

  20. AA4443

    St. Louis Lambert International Airport

    09:15

    STL

    2h 33m

    Direct

    12:48

    LGA

    S M T W T F S
    Search

  21. AC713

    LaGuardia Airport

    16:55

    LGA

    1h 33m

    Direct

    18:28

    YYZ

    S - T W T F S

  22. AC854

    Toronto Pearson International Airport

    18:35

    YYZ

    7h

    Direct

    06:35

    LHR

    S M T W T F S
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About St. Louis Lambert International Airport and Heathrow Airport

Learn about St. Louis Lambert International Airport (STL) and Heathrow Airport (LHR) — including location, terminals, transportation, and travel tips.

Flight distance 6,750.33km
Cheapest one-way ticket price £268
Cheapest return ticket price £589

FAQs for St. Louis Lambert International Airport to Heathrow Airport Flights

  • How long is the flight from St. Louis Lambert International Airport to Heathrow Airport?

    St. Louis Lambert International Airport to Heathrow Airport takes about 7 hours 18 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 3 daily flights from St. Louis Lambert International Airport (STL) to Heathrow Airport (LHR).
  • The earliest flight from St. Louis Lambert International Airport to Heathrow Airport departs at 21:35, and the last departs at 21:40, with about 1 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from St. Louis Lambert International Airport (STL) to Heathrow Airport (LHR) is quite popular. Without considering departure times or holidays, tickets cost around £791 in October, the most expensive month to book this route.
    • The distance from London Gatwick Airport to downtown is about 39km, by taxi about 50 minutes.
    • The distance from Heathrow Airport to downtown is about 23km, by taxi about 40 minutes.
    • The distance from London Luton Airport to downtown is about 44km, by taxi about 1 hour.
  • British Airways is a very popular airline operating an average of 110 flights per month.
  • One-way flights from St. Louis Lambert International Airport to Heathrow Airport currently start from £268, and round-trip fares start from £589. The current lowest fare is a American Airlines flight departing on Thu, Dec 10; prices may vary depending on availability.
  • Yes. British Airways operate direct flights from St. Louis Lambert International Airport to Heathrow Airport, with an average flight time of 7 hours 21 minutes, and around 4 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from St. Louis Lambert International Airport to Heathrow Airport is £691. Prices may vary depending on the departure date, airline, and availability.
  • St. Louis Lambert International Airport to Heathrow Airport operates around 4 weekly flights, mainly by British Airways. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter St. Louis Lambert International Airport and Heathrow Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Find Cheap Flights with Trip.com

Note: Prices shown on this page are the estimated lowest prices and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed on this page are all-inclusive (including taxes, fuel surcharges, civil aviation development fund, etc.), with all fees confirmed before payment. Fees for luggage, meals, Wi-Fi, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours—sometimes even in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the cancellation and change policies for each flight ticket during the booking process, including any fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply according to the airline's ticket policy.
Cancellation/change due to a flight schedule change:
If the flight schedule has changed and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please visit the customer support pages.