Cheap flights from Heathrow to St. Louis

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How to find the cheapest flight from
Heathrow (LHR) to St. Louis (STL)

All the information you need to plan the best LHR to STL flight in 2022: compare Heathrow to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.
LHR - STL
Price
£738 - £961
STL
Temperature
0 - 27 °C
STL
Rainfall
56 - 119 mm

Popular in

July

High demand for flights, 13% potential price rise

Cheapest in

February

Best time to find cheap flights, 12% potential price drop

Round-trip from

£614

From London Heathrow to Lambert-St Louis

One-way from

£555

One-way flight from London Heathrow to Lambert-St Louis

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from London Heathrow Airport to St. Louis?

Travelers have found it’s best to book a flight 43 days in advance to save up to 7% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 43 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London Heathrow Airport to St. Louis 1-2 weeks in advance for as low as £692, or £734 for flights within the next 24 hours.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to St. Louis as you normally would.

Cheap flights from Heathrow to St. Louis in July, August 2022

The best prices found for LHR to STL flights in July, August
7 Jul - 14 Jul
£592pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
26 Aug - 10 Sep
£641pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
22 Aug - 1 Sep
£721pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow

London Heathrow to St. Louis 2022 flight deals

Cheap flights to St. Louis from Heathrow found for this year
2 Nov - 7 Nov
£518pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
16 Nov - 30 Nov
£543pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
12 Oct - 19 Oct
£551pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow

Cheap American Airlines flights from Heathrow to St. Louis

21 Oct - 25 Oct
£771pp
LHR
London Heathrow
American Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
   
2 STOPS
LHR
London Heathrow

Cheap Aer Lingus flights from Heathrow to St. Louis

13 Dec - 23 Dec
£782pp
LHR
London Heathrow
Aer Lingus
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Aer Lingus
   
2 STOPS
LHR
London Heathrow

Last-minute flights from Heathrow to St. Louis

Late deals on return flights to St. Louis from Heathrow, departing today and this week
13 Jul - 17 Jul
£732pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
13 Jul - 17 Jul
£820pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
11 Jul - 15 Aug
£1,058pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow

One-way flights to Lambert-St Louis from London Heathrow

The cheapest one-way flights from Heathrow to St. Louis
10:05 - 11:14
Air Canada
2 stops
31h 09m
LHR - STL
Air Canada
£555
Kiwi.com
01:30 - 11:56
Virgin Atlantic
2 stops
16h 26m
LHR - STL
Virgin Atlantic
£568
StudentUniverse
13:00 - 10:02
Multiple Airlines
1 stop
27h 02m
LHR - STL
Multiple Airlines
£580
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Heathrow</span> to <span class="emphasized">St. Louis</span> flights.

Flight FAQs

From Heathrow to St. Louis

What airport do you fly into for flights to St. Louis from London Heathrow?

For a flight from London Heathrow to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 inbound flights from London Heathrow per day. 10 airlines have flights to Lambert-St Louis from London Heathrow on a regular basis.

Which airlines flying from London Heathrow to Lambert-St Louis have flexible cancellations due to COVID-19?

Some of the carriers operating flights from London Heathrow to Lambert-St Louis that may be offering flexible cancellation policies are Finnair, Virgin Atlantic, and British Airways. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from London Heathrow Airport to St. Louis for under £600 on Cheapflights?

Yes, there are multiple flights from London Heathrow Airport to St. Louis for under £600. The cheapest flight booked recently is on Finnair for just £543, but on average you can expect to pay £599.

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

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

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

Cheapflights users have booked flights from London Heathrow Airport to St. Louis round-trip from £543. Other airlines that can offer you cheap pricing are Lufthansa, from £572, and United Airlines, from £731. Finnair is priced at 21% lower than the current average price of a flight leaving 3 months from now.

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

Before booking your flight from London Heathrow Airport to St. Louis check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

What are the cheapest flights from London Heathrow Airport to St. Louis?

While on average a flight from London Heathrow Airport to St. Louis is generally £3,009, our data shows the cheapest flight currently is £580. When looking at the most popular route, (London Heathrow - Lambert-St Louis), you can expect to pay £543 for that flight.

COVID Restrictions

View COVID Travel Restrictions for St. Louis, MO

Do I need a COVID test to fly to St. Louis from Heathrow?

Information is based on travel restrictions from London Heathrow to Lambert-St Louis

Most visitors from London Heathrow need to provide a negative COVID-19 test result and/or quarantine to enter Lambert-St Louis.

COVID-19 testing requirements
Visitors from London Heathrow are not required to present a negative COVID-19 PCR test or antigen result upon entering Lambert-St Louis.

Quarantine requirements
Visitors from London Heathrow are not required to quarantine after entering Lambert-St Louis.

Do I need a test to fly back to Heathrow from St. Louis?

Returning to London Heathrow from Lambert-St Louis

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering London Heathrow.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering London Heathrow.

Hide COVID Travel Restrictions for St. Louis, MO

Alternative routes for Heathrow to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from London Heathrow to Lambert-St Louis

The chart below displays the airlines Cheapflights users travelling from Heathrow to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Lufthansa
£517 £854 No cancel fee 76%
Search Lufthansa flights
Virgin Atlantic
£517 £665 No cancel fee 72%
Search Virgin Atlantic flights
United Airlines
£536 £958 No cancel fee 69%
Search United Airlines flights
Finnair
£551 £672 No cancel fee 76%
Search Finnair flights
British Airways
£678 £893 No cancel fee 70%
Search British Airways flights
Air Canada
£700 £849 No cancel fee 67%
Search Air Canada flights
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