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London To St Louis Flights

  • One-Way
  • Round-Trip
  • Multi-City

From

Indira Gandhi International Airport

To

Chhatrapati Shivaji International Airport

DEPARTURE DATE

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Friday

Return Date

Book a round trip
to save more

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TRAVELLER & CLASS

1 Traveller(s)

Economy

June
July
August
September
October
November
December
January
February
March
April

November is by far the best month, wherein you can get cheapest flights for London to St Louis. Meanwhile, August is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.

Things to know
arrow One Way Fare
July

July- During this month the footfall is less so, the flight is gradually inexpensive.

round Round Trip Fare
July

July - is the cheapest month to book round trip flights.

Cheaper Fare
£ 735

Cheapest Fare- Currently, this is the fare price based on the current demand.

disclDisclaimer - All the above-mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.

Best Flight From London To St Louis

Cheapest
Air Canada
Air Canada

LHR

14:05

London

London Heathrow Airport

Fri , 23 May 2025

11h 53m
ellipse
1 Stop

STL

19:58

St Louis

St Louis Lambert International Airport

Fri, 23 May 2025

£1265
United Airlines
United Airlines

LHR

14:10

London

London Heathrow Airport

Fri , 23 May 2025

13h 05m
ellipse
1 Stop

STL

21:15

St Louis

St Louis Lambert International Airport

Fri, 23 May 2025

£1269
Austrian Airlines
Austrian Airlines

LHR

14:10

London

London Heathrow Airport

Fri , 23 May 2025

33h 50m
ellipse
1 Stop

STL

18:00

St Louis

St Louis Lambert International Airport

Sat, 24 May 2025

£1269
American Airlines
American Airlines

LHR

09:15

London

London Heathrow Airport

Fri , 23 May 2025

12h 06m
ellipse
1 Stop

STL

15:21

St Louis

St Louis Lambert International Airport

Fri, 23 May 2025

£1269
Delta Airlines
Delta Airlines

LHR

11:20

London

London Heathrow Airport

Fri , 23 May 2025

12h 41m
ellipse
1 Stop

STL

18:01

St Louis

St Louis Lambert International Airport

Fri, 23 May 2025

£1269
American Airlines
American Airlines

LHR

09:15

London

London Heathrow Airport

Thu , 29 May 2025

12h 06m
ellipse
1 Stop

STL

15:21

St Louis

St Louis Lambert International Airport

Thu, 29 May 2025

£600
Finnair
Finnair

LHR

14:10

London

London Heathrow Airport

Thu , 29 May 2025

13h 42m
ellipse
1 Stop

STL

21:52

St Louis

St Louis Lambert International Airport

Thu, 29 May 2025

£778
British Airways
British Airways

LHR

13:30

London

London Heathrow Airport

Thu , 29 May 2025

13h 28m
ellipse
1 Stop

STL

20:58

St Louis

St Louis Lambert International Airport

Thu, 29 May 2025

£782
Lufthansa
Lufthansa

LHR

09:30

London

London Heathrow Airport

Thu , 29 May 2025

17h 55m
ellipse
1 Stop

STL

21:25

St Louis

St Louis Lambert International Airport

Thu, 29 May 2025

£786
United Airlines
United Airlines

LHR

08:30

London

London Heathrow Airport

Thu , 29 May 2025

12h 23m
ellipse
1 Stop

STL

14:53

St Louis

St Louis Lambert International Airport

Thu, 29 May 2025

£786
Delta Airlines
Delta Airlines

LHR

12:25

London

London Heathrow Airport

Thu , 29 May 2025

17h 01m
ellipse
1 Stop

STL

23:26

St Louis

St Louis Lambert International Airport

Thu, 29 May 2025

£786
ellipse

Find the Lowest Airfare London to St Louis

Cheapest Fares
Fare
Date
Airline
Departure
Lowest Airfare
£735
01 May 2025
Lufthansa
19:30 PM
Cheapest Airfare Within 30 Days
£735
01 May 2025
Lufthansa
19:30 PM
Cheapest Airfare Within 90 Days
£634
03 July 2025
American Airlines
16:10 PM
ellipse

Early Morning Flight London to St Louis

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Cheapest Flight
Found
£1282
group
Average Flight
Time
15h 02m
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Date/Time
23 May 2025
07:45 AM
plane
Airlines
KLM Royal Dutch Airlines
Ellipse

Late Night Flight London to St Louis

wallet
Cheapest Flight
Found
£1269
group
Average Flight
Time
13h 05m
calendar
Date/Time
23 May 2025
14:10 PM
plane
Airlines
United Airlines

Flights from London to St Louis with Easemytrip

Flying from London to St Louis has never been easier. Whether you’re planning a short business trip, a weekend getaway, or reconnecting with family and friends, Easemytrip brings you the best deals, seamless booking, and flexible options for this popular flight route. Our platform is built to help travellers like you compare flight prices, explore direct and connecting options, and find the perfect departure time — all within a few clicks.

The air route between London to St Louis is one of the most frequently travelled, offering reliable services from top airlines and excellent connectivity between London Heathrow Airport (LHR) and St Louis Lambert International Airport (STL). You can expect a flight distance of approximately 6741 km, and most direct services cover it in around 11:21.

Let’s take a closer look at everything you need to know before booking your flight from London to St Louis.

Travel Overview: London to St Louis

Flight Details Information
Route Distance 6741 km
Average Flight Time 11:21 hrs
Departure Airport London Heathrow Airport (LHR)
Arrival Airport St Louis Lambert International Airport (STL)
Cabin Classes Available Economy Class, Premium Economy, Business Class, First Class
Direct Flights NO
Common Airlines Air Canada, United Airlines, Austrian Airlines, American Airlines

The route is serviced regularly by both full-service and budget airlines, catering to all types of travellers — from those looking for no-frills budget options to those preferring business and first-class comfort. If you're flying for business, early morning weekday flights are a great choice, while leisure travellers often opt for weekend and evening departures.

Read more

FAQs about flights from London to St Louis

Are there direct flights from London to St Louis?

How early should I book?

Which airlines offer the most frequent service?

Is it cheaper to fly round-trip or one-way?

Can I mix airlines for departure and return?

Is it possible to change or cancel my booking after confirmation?

Can I book additional baggage or in-flight services in advance?