Cheap Flights from Heathrow to St. Louis from £518

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

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

£555

Kiwi.com

01:30 - 11:56

Virgin Atlantic

2 stops

16h 26m

LHR - STL

£568

StudentUniverse

13:00 - 10:02

Multiple Airlines

1 stop

27h 02m

LHR - STL

£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.

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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.

London to Kansas City from £916 pp

Airline	Cheapest	Average	Flexibility	On-time
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

Cheap flights from Heathrow to St. Louis

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.

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

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

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

The best prices found for LHR to STL flights in July, August

London Heathrow to St. Louis 2022 flight deals

Cheap flights to St. Louis from Heathrow found for this year

Cheap American Airlines flights from Heathrow to St. Louis

Cheap Aer Lingus flights from Heathrow to St. Louis

Last-minute flights from Heathrow to St. Louis

Late deals on return flights to St. Louis from Heathrow, departing today and this week

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

The cheapest one-way flights from Heathrow to St. Louis

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?

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

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

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

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

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

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

Related searches

Flights to St. Louis (STL) from Heathrow

Hire a Car

COVID Restrictions

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

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

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.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2022.

Cheap flights from Heathrow to St. Louis

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.

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

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

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

The best prices found for LHR to STL flights in July, August

London Heathrow to St. Louis 2022 flight deals

Cheap flights to St. Louis from Heathrow found for this year

Cheap American Airlines flights from Heathrow to St. Louis

Cheap Aer Lingus flights from Heathrow to St. Louis

Last-minute flights from Heathrow to St. Louis

Late deals on return flights to St. Louis from Heathrow, departing today and this week

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

The cheapest one-way flights from Heathrow to St. Louis

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?

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

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

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

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

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

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

Related searches

Flights to St. Louis (STL) from Heathrow

Hire a Car

COVID Restrictions

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

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

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.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2022.

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