Cheap flights from Heathrow to St Louis

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The best prices from Heathrow to St Louis are usually found in February or March, booked 42 days in advance, depart on a Monday or Friday and return on a Friday

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

LHR - STL
Price
£450 - £761
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, 24% potential price drop

Average price

£600

Average for round-trip flights in October 2020

Round-trip from

£450

From Heathrow to St Louis

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly return from Heathrow to St Louis?

Departing on a Sunday is a good option for securing a great price. You can expect to save up to 23% when planning your travel around this day of the week.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 48 days in advance, which can save you up to 0% on flights from Heathrow to St Louis compared to booking the week you need them. Waiting 48 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £579. For sooner than that we have options available in the next 3 days from £579.

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

March can be a great time to fly to St Louis from Heathrow with a flight ticket averaging about £596. Cheapflights users have found deals in the month of March for as cheap as £413. The most expensive prices can be found in the month of July.

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

It’s typically best to fly out from Heathrow to St Louis in the evening. Doing so could potentially save you 18% on the flight price compared to flying at midday, which is usually more expensive.

Cheap flights from Heathrow to St Louis in October, November 2020

The best prices found for LHR to STL flights in October, November
23 Nov - 27 Nov
£478pp
LHR
London Heathrow
Lufthansa
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Lufthansa
 
1 STOP
LHR
London Heathrow
21 Nov - 28 Nov
£487pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
LHR
London Heathrow
20 Oct - 27 Oct
£600pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
     
3 STOPS
LHR
London Heathrow

Heathrow to St Louis 2020 flight deals

Cheap flights to St Louis from Heathrow found for this year
23 Nov - 27 Nov
£478pp
LHR
London Heathrow
Lufthansa
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Lufthansa
 
1 STOP
LHR
London Heathrow
21 Nov - 28 Nov
£487pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
LHR
London Heathrow
2 Dec - 5 Dec
£532pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
     
3 STOPS
LHR
London Heathrow

One-way flights to St Louis from Heathrow

The cheapest one-way flights from Heathrow to St Louis
12:35 - 15:19
British Airways
2 stops
32h 44m
LHR - STL
British Airways
£397
Kiwi.com
06:35 - 05:22
Multiple Airlines
1 stop
28h 47m
LHR - STL
Multiple Airlines
£453
Kiwi.com
05:00 - 15:13
Austrian Airlines
1 stop
16h 13m
LHR - STL
Austrian Airlines
£515
aua.com

Related info for your journey

Useful info, stats and facts about Heathrow to St Louis flights.

Flight FAQs

From Heathrow to St Louis

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

Can I find flights from Heathrow to St Louis for under £540 on Cheapflights?

Yes, there are multiple flights from Heathrow to St Louis for under £540. The cheapest flight booked recently is on Lufthansa for just £478, but on average you can expect to pay £585.

Are there direct flights from Heathrow to St Louis for under £463 on Cheapflights?

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

Does it rain more in Heathrow or St Louis?

The rainfall in Heathrow is generally same as the rainfall in St Louis. This will continue over the next 21 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 St Louis?

For as low as £684, Air Canada can have you in St Louis from Heathrow in 12h 34m. 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 St Louis return?

Our cheapest airline available from Heathrow to St Louis is Lufthansa. Our recent data shows that you can find tickets from as low as £479 on this airline. Additional options worth looking into are American Airlines and Delta, starting at £529 and £577 round-trip. Users have found that Lufthansa is 19% cheaper than the other options available to this destination.

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

To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £397. Delta flights start at £432 while deals on Austrian Airlines start at £515 one-way.

Alternative routes for Heathrow to St Louis

Destination information for St Louis

Things to know before you go. Useful info for your trip from Heathrow to St Louis
Today's exchange rate
£1 = $1.30
Average temperature for October in St Louis
22.0 °C
Avg rainfall for October in St Louis
71.0 mm

Airports servicing London

Airports servicing St. Louis

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