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

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

All the information you need to plan the best STL to LHR flight in 2022: compare St. Louis to Heathrow flight prices with the expected peak season, weather and rainfall in Heathrow.
STL - LHR
Price
$767 - $1,180
LHR
Temperature
39.2 - 62.6 °F
LHR
Rainfall
1.6 - 2.8 inches

Popular in

June

High demand for flights, 21% potential price rise

Cheapest in

October

Best time to find cheap flights, 17% potential price drop

Round-trip from

$767

From Lambert-St Louis to London Heathrow

One-way from

$570

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

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
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 December. Prices are generally better when you fly from St. Louis to London Heathrow Airport in September, with the cheapest ticket starting at $390.

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

When flying from St. Louis to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Find a great deal and save up to 77% by booking at least 53 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 $1,203.

Cheap flights from St. Louis to Heathrow in May, June 2022

The best prices found for STL to LHR flights for May, June
7 Jun - 14 Jun
$933pp
STL
Lambert-St Louis
United Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
United Airlines
   
2 STOPS
STL
Lambert-St Louis
7 Jun - 14 Jun
$934pp
STL
Lambert-St Louis
Delta
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Delta
   
2 STOPS
STL
Lambert-St Louis
7 Jun - 14 Jun
$950pp
STL
Lambert-St Louis
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis to Heathrow 2022 flight deals

Cheap flights to Heathrow from St. Louis found for this year
27 Sep - 19 Oct
$711pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
   
2 STOPS
STL
Lambert-St Louis
1 Nov - 7 Nov
$718pp
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Finnair
   
2 STOPS
STL
Lambert-St Louis
25 Oct - 2 Nov
$719pp
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Finnair
   
2 STOPS
STL
Lambert-St Louis

Last minute flights from St. Louis to Heathrow

Late deals on round-trip flights to Heathrow from St. Louis, departing today and this week
24 May - 31 May
$1,078pp
STL
Lambert-St Louis
Scandinavian Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Scandinavian Airlines
   
2 STOPS
STL
Lambert-St Louis
24 May - 31 May
$1,117pp
STL
Lambert-St Louis
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
   
2 STOPS
STL
Lambert-St Louis
24 May - 31 May
$1,122pp
STL
Lambert-St Louis
United Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
United Airlines
   
2 STOPS
STL
Lambert-St Louis

One-way flights to Heathrow from St. Louis

The cheapest one-way flights from St. Louis to Heathrow
8:23 am - 5:20 am
Lufthansa
1 Stop
14h 57m
STL - LHR
Lufthansa
$570
ScholarTrip
5:43 am - 10:35 am
Scandinavian Airlines
2 Stops
22h 52m
STL - LHR
Scandinavian Airlines
$594
ChatDeal
2:40 am - 7:35 am
Multiple Airlines
2 Stops
46h 55m
STL - LHR
Multiple Airlines
$669
Kiwi.com

Related info for your journey

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

Flight FAQs

From St. Louis to Heathrow

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 15 different airlines.

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

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

Can I find flights from St. Louis to London Heathrow Airport for under $800 on Cheapflights?

Yes, there are multiple flights from St. Louis to London Heathrow Airport for under $800. The cheapest flight booked recently is on Finnair for just $718, but on average you can expect to pay $734.

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

There are currently 20+ 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, Finnair ($718), Lufthansa ($722), and Air Canada ($729) offers the cheapest pricing from St. Louis to London Heathrow Airport. Finnair is 22% cheaper than the average price of flights available within the next 90 days to this destination.

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 Cape Air, American Airlines and Air Canada. Something to consider prior to booking your flight.

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

While on average a flight from St. Louis to London Heathrow Airport is generally $1,807, our data shows the cheapest flight currently is $690. When looking at the most popular route, (Lambert-St Louis - London Heathrow), you can expect to pay $718 for that flight.

Related searches

Flights to Heathrow from St. Louis (STL)
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Rent a Car

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COVID Restrictions

View COVID Travel Restrictions for Heathrow (LHR)

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

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

Most visitors from Lambert-St Louis can enter London Heathrow without restrictions.

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.

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

Returning to Lambert-St Louis from London Heathrow

COVID-19 testing requirements
Visitors from London Heathrow must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Lambert-St Louis.

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

Hide COVID Travel Restrictions for Heathrow (LHR)

Alternative routes for St. Louis to Heathrow

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

Destination information for Heathrow

Things to know before you go - useful duration and weather info for your trip from St. Louis to Heathrow.
Today's exchange rate
$1 = £0.81
Average temperature for May in Heathrow
64.4 °F
Avg rainfall for May in Heathrow
1.9 ″

Airports servicing St. Louis

Airports servicing London

Top 10 airlines flying from Lambert-St Louis to London Heathrow

The chart below displays the airlines Cheapflights users traveling from St. Louis to Heathrow 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
Brussels Airlines
$351 $627 No cancel fee N/A
Virgin Atlantic
$430 $850 No cancel fee 72%
United Airlines
$524 $745 No cancel fee 69%
Finnair
$561 $835 No cancel fee 76%
British Airways
$606 $863 No cancel fee 70%
American Airlines
$620 $860 No cancel fee 71%
Iberia
$627 $889 No cancel fee 77%
Delta
$649 $1,143 No cancel fee N/A
Air France
$650 $1,051 No cancel fee 77%
Air Canada
$671 $878 No cancel fee 67%