Cheap flights from Heathrow to Lambert-St Louis Intl

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How to find the cheapest flight from
Heathrow (LHR) to Lambert-St Louis Intl (STL)

LHR - STL
Price
£419 - £713
STL
Temperature
7 - 32 °C
STL
Rainfall
57 - 130 mm

Popular in

August

High demand for flights, 22% potential price rise

Cheapest in

February

Best time to find cheap flights, 25% potential price drop

Average price

£501

Average for round-trip flights in April 2021

Round-trip from

£419

From Heathrow to Lambert-St Louis Intl

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 Heathrow to Lambert-St Louis Intl?

Travellers have found it’s best to book a flight 57 days in advance to save up to 14% 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 57 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 Heathrow to Lambert-St Louis Intl 1-2 weeks in advance for as low as £618, or £661 for flights within the next 24 hours.

Cheap flights from Heathrow to Lambert-St Louis Intl in April, May 2021

19 May - 23 May
£456pp
LHR
London Heathrow
Finnair
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
19 May - 23 May
£486pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
17 May - 14 Jun
£494pp
LHR
London Heathrow
Lufthansa
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Lufthansa
 
1 STOP
LHR
London Heathrow

Heathrow to Lambert-St Louis Intl 2021 flight deals

19 May - 23 May
£456pp
LHR
London Heathrow
Finnair
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
19 May - 23 May
£486pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
17 May - 14 Jun
£494pp
LHR
London Heathrow
Lufthansa
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Lufthansa
 
1 STOP
LHR
London Heathrow

Last-minute flights from Heathrow to Lambert-St Louis Intl

20 Apr - 4 May
£1,483pp
LHR
London Heathrow
Delta
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
 
1 STOP
LHR
London Heathrow
20 Apr - 4 May
£1,484pp
LHR
London Heathrow
Delta
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
 
1 STOP
LHR
London Heathrow
20 Apr - 4 May
£1,496pp
LHR
London Heathrow
Delta
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
 
1 STOP
LHR
London Heathrow

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

02:30 - 11:52
Lufthansa
2 stops
15h 22m
LHR - STL
Lufthansa
£617
Lufthansa
10:55 - 17:11
Delta
1 stop
12h 16m
LHR - STL
Delta
£637
Delta
06:05 - 15:25
Air Canada
2 stops
15h 20m
LHR - STL
Air Canada
£680
ChecknFly

Related info for your journey

Flight FAQs

From Heathrow to Lambert-St Louis Intl

Are flight prices decreasing from Heathrow to St Louis due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Heathrow and St Louis for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

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, American Airlines, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Heathrow to Lambert-St Louis Intl for under £511 on Cheapflights?

Yes, there are multiple flights from Heathrow to Lambert-St Louis Intl for under £511. The cheapest flight booked recently is on Finnair for just £456, but on average you can expect to pay £604.

Are there direct flights from Heathrow to Lambert-St Louis Intl for under £438 on Cheapflights?

There are no direct flights from Heathrow to Lambert-St Louis Intl, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Heathrow to Lambert-St Louis Intl for under £1,532?

There are currently 4+ open flights from Heathrow to Lambert-St Louis Intl within the next 7 days for less than £1,532.

Does it rain more in Heathrow or St Louis?

The rainfall in Heathrow is generally more than the rainfall in St Louis. This will continue over the next 20 days.

Is Heathrow weather warmer or cooler than St Louis?

Expect the weather to be around 32 °C on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in St Louis is generally hotter than in Heathrow.

How long does is the flight from Heathrow to Lambert-St Louis Intl?

Airlines like United Airlines, Lufthansa, and Virgin Atlantic fly from Heathrow to Lambert-St Louis Intl in about 11h 52m. The time it takes to get you to your destination can typically vary by up to 1h 04m. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to flying from Heathrow to Lambert-St Louis Intl return?

Our cheapest airline available from Heathrow to Lambert-St Louis Intl is Finnair. Our recent data shows that you can find tickets from as low as £456 on this airline. Additional options worth looking into are Lufthansa and American Airlines, starting at £494 and £695 round-trip. Finnair is currently priced 18% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Heathrow to Lambert-St Louis Intl one-way?

The cheapest airline one-way is Lufthansa, with whom users have recently found tickets for as low as £496. However, be on the lookout for offers from Air Canada and KLM, as they are both options that can get you from Heathrow to Lambert-St Louis Intl for a low price.

Alternative routes for Heathrow to Lambert-St Louis Intl

Destination information for Lambert-St Louis Intl

Today's exchange rate
£1 = $1.38
Average temperature for April in Lambert-St Louis Intl
21.0 °C
Avg rainfall for April in Lambert-St Louis Intl
104.0 mm

Airports servicing London

Airports servicing St. Louis

Top 7 airlines flying from Heathrow to Lambert-St Louis Intl

Airline Cheapest Average Flexibility On-time COVID-19 safety
Iberia
£451 £687 No cancel fee 77%
Search Iberia flights
Finnair
£526 £743 No cancel fee 76%
Search Finnair flights
American Airlines
£492 £746 No cancel fee 71%
Search American Airlines flights
United Airlines
£563 £854 No cancel fee 69%
Search United Airlines flights
British Airways
£475 £1,024 No cancel fee 70%
Search British Airways flights
Virgin Atlantic
£849 £1,106 No cancel fee 72%
Search Virgin Atlantic flights
Air Canada
£691 £1,191 No cancel fee 67%
Search Air Canada flights
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