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Cheap flights from London Heathrow Airport to Castries from £571

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Castries departing on 16/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from London Heathrow Airport to Castries

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£797Multiple Airlines
Wed, 17 Jun - Wed, 1 Jul
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£804Multiple Airlines
Fri, 12 Jun - Fri, 19 Jun
Multiple Airlines Logo
09:35 - 18:25
LHR
-
SLU
13h 50m
1 stop
Multiple Airlines Logo
16:20 - 09:20
SLU
-
LHR
12h 00m
1 stop
£847Multiple Airlines
Mon, 8 Jun - Mon, 15 Jun
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£860Multiple Airlines
Sat, 12 Sep - Sat, 19 Sep
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£862Multiple Airlines
Sat, 5 Sep - Sat, 19 Sep
Multiple Airlines Logo
10:45 - 19:00
LHR
-
SLU
13h 15m
1 stop
Multiple Airlines Logo
12:35 - 05:50
SLU
-
LHR
12h 15m
1 stop
£878Multiple Airlines
Thu, 18 Jun - Thu, 25 Jun
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£893Multiple Airlines
Sat, 6 Jun - Sat, 13 Jun
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£916Multiple Airlines
Fri, 26 Jun - Fri, 3 Jul
Multiple Airlines Logo
09:40 - 18:25
LHR
-
SLU
12h 45m
1 stop
Multiple Airlines Logo
16:20 - 09:55
SLU
-
LHR
13h 35m
1 stop
£935Multiple Airlines
Tue, 27 Oct - Tue, 3 Nov
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£963Multiple Airlines
Fri, 19 Jun - Fri, 26 Jun

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Castries that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 13 May 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Castries that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 17/6

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Wed 1/7

12:35-06:15

1 stop12h 40m

£797

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 12/6

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Fri 19/6

12:35-06:15

1 stop12h 40m

£804

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 8/6

09:35-18:25

1 stop13h 50m

Castries George F. L. Charle

Mon 15/6

16:20-09:20

1 stop12h 00m

£847

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 12/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sat 19/9

12:35-06:15

1 stop12h 40m

£860

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 5/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sat 19/9

12:35-06:15

1 stop12h 40m

£862

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 18/6

10:45-19:00

1 stop13h 15m

Castries George F. L. Charle

Thu 25/6

12:35-05:50

1 stop12h 15m

£878

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 6/6

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sat 13/6

12:35-06:15

1 stop12h 40m

£893

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 26/6

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Fri 3/7

12:35-06:15

1 stop12h 40m

£916

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 27/10

09:40-18:25

1 stop12h 45m

Castries George F. L. Charle

Tue 3/11

16:20-09:55

1 stop13h 35m

£935

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 19/6

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Fri 26/6

12:35-06:15

1 stop12h 40m

£963

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Castries from

How to get the cheapest flight ticket from London Heathrow Airport to Castries

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Which airlines fly to Castries?

British Airways, Air Canada and Finnair are the top three most popular airlines that fly to Castries from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 48% of people opting to fly with this airline when travelling to Castries. Keep in mind that there are 6 different airlines that fly to Castries on a routine basis, so you have a few additional options to choose from.

When to book flights from London Heathrow Airport to Castries

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Castries according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Castries (LHR to SLU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Castries

Fastest flight time

12h 45m

Direct flights

None
The fastest flight from London Heathrow Airport to Castries takes 12h 45m
There are no direct flights from London Heathrow Airport to Castries. There are no popular flight routes from London Heathrow Airport to Castries.
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Frequently asked questions about flying from London Heathrow Airport to Castries

  • How far is London Heathrow to Castries George F. L. Charle by plane?

    The distance between London Heathrow and Castries George F. L. Charle is about 4203.1 mi. Typically, this will take 12h 45m by plane in normal conditions.

  • When did momondo last update prices for flights from London Heathrow Airport to Castries George F. L. Charle Airport?

    Prices for flights from London Heathrow Airport to Castries George F. L. Charle Airport are refreshed on a daily basis.

  • How old do you have to be to fly from London Heathrow Airport to Castries George F. L. Charle Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Castries George F. L. Charle Airport.

  • What documentation or ID do you need to fly to Castries George F. L. Charle Airport?

    The travel and health documents required for your trip to Castries George F. L. Charle Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Castries George F. L. Charle Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Gros Islet
Rodney Bay
Marigot Bay

Why use momondo?

Why should I use momondo to find a flight deal from London to Castries?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Castries from London.

Can I find flights from London to Castries with flexible booking policies on momondo?

momondo does allow users to show only those flights to Castries from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Castries?

momondo provides multiple filters to help you find the best flight to Castries from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Castries right now. Can momondo alert me if prices change?

Price alerts on flights to Castries from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Castries trip

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