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Cheap flights from London Heathrow Airport to Castries from £463

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 4/9. 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

Logo
11:25 - 12:05LHR-SLU
29h 40m1 stop
Logo
12:35 - 06:20SLU-LHR
12h 45m1 stop
£711
Find Deal
Mon, 29 Sep - Mon, 13 Oct
Logo
13:25 - 15:15LHR-SLU
29h 50m1 stop
Logo
15:45 - 08:30SLU-LHR
12h 45m1 stop
£712
Find Deal
Tue, 28 Oct - Tue, 4 Nov
Logo
11:25 - 19:00LHR-SLU
12h 35m1 stop
Logo
12:35 - 06:20SLU-LHR
12h 45m1 stop
£713
Find Deal
Mon, 13 Oct - Mon, 20 Oct
Logo
11:25 - 19:00LHR-SLU
12h 35m1 stop
Logo
12:35 - 06:20SLU-LHR
12h 45m1 stop
£720
Find Deal
Tue, 9 Sep - Fri, 19 Sep
Logo
11:25 - 19:00LHR-SLU
12h 35m1 stop
Logo
09:10 - 06:20SLU-LHR
16h 10m1 stop
£725
Find Deal
Tue, 14 Oct - Tue, 21 Oct
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09:40 - 13:10LHR-SLU
31h 30m1 stop
Logo
15:20 - 09:55SLU-LHR
14h 35m1 stop
£730
Find Deal
Thu, 20 Nov - Thu, 27 Nov
Logo
11:25 - 19:00LHR-SLU
12h 35m1 stop
Logo
12:35 - 06:20SLU-LHR
12h 45m1 stop
£743
Find Deal
Mon, 13 Oct - Mon, 20 Oct
Logo
11:25 - 19:00LHR-SLU
12h 35m1 stop
Logo
12:35 - 06:20SLU-LHR
12h 45m1 stop
£749
Find Deal
Fri, 12 Sep - Fri, 19 Sep
Logo
08:00 - 13:10LHR-SLU
33h 10m1 stop
Logo
15:20 - 11:30SLU-LHR
16h 10m2 stops
£763
Find Deal
Thu, 20 Nov - Thu, 27 Nov
Logo
11:25 - 19:00LHR-SLU
12h 35m1 stop
Logo
12:35 - 05:50SLU-LHR
13h 15m1 stop
£765
Find Deal
Wed, 27 Aug - Wed, 17 Dec

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 1 August 2025.
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

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 29/9

11:25-12:05

1 stop29h 40m

Castries George F. L. Charle

Mon 13/10

12:35-06:20

1 stop12h 45m

£711

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 28/10

13:25-15:15

1 stop29h 50m

Castries George F. L. Charle

Tue 4/11

15:45-08:30

1 stop12h 45m

£712

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 13/10

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

Mon 20/10

12:35-06:20

1 stop12h 45m

£713

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 9/9

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

Fri 19/9

12:35-06:20

1 stop12h 45m

£720

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 14/10

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

Tue 21/10

09:10-06:20

1 stop16h 10m

£725

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 20/11

09:40-13:10

1 stop31h 30m

Castries George F. L. Charle

Thu 27/11

15:20-09:55

1 stop14h 35m

£730

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 13/10

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

Mon 20/10

12:35-06:20

1 stop12h 45m

£743

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 12/9

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

Fri 19/9

12:35-06:20

1 stop12h 45m

£749

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 20/11

08:00-13:10

1 stop33h 10m

Castries George F. L. Charle

Thu 27/11

15:20-11:30

2 stops16h 10m

£763

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 27/8

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

Wed 17/12

12:35-05:50

1 stop13h 15m

£765

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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

What is the typical price of a round-trip flight between London Heathrow Airport and Castries?

What is the cheapest day to depart on your flight to Castries?

Our data shows that Sunday is the least expensive day to fly to Castries. Tickets to fly out on this day can be as low as £518. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Castries on Saturday is £670.

What is the cheapest time of day to depart on your flight to Castries?

According to our data, the cheapest time of day to fly to Castries is in the morning. momondo users have found flights departing from London Heathrow Airport to Castries in the morning for as low as £590. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Castries, so prices are often more expensive at around £836 per ticket.

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

Best price found

£463

Fastest flight time

11h 30m

Direct flights

None

Airports in Castries

1 airport
The best one-way flight to Castries from London Heathrow Airport in the past 72 hours is £463. The best return flight deal from London Heathrow Airport to Castries found on momondo in the last 72 hours is £711.
The fastest flight from London Heathrow Airport to Castries takes 11h 30m
There are no direct flights from London Heathrow Airport to Castries. Popular non-direct route for this connection is London Heathrow Airport - Castries George F. L. Charle Airport.
There is 1 airport near Castries: Castries George F. L. Charle (SLU)
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  • 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 11h 30m 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 many operators does momondo search for flights from London Heathrow Airport to Castries George F. L. Charle Airport?

  • 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.

  • What is the most popular airline from London Heathrow Airport to Castries?

Best airlines flying from London Heathrow Airport to Castries

Compare and see reviews for airlines that fly from London Heathrow Airport to Castries with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £431Free CancellationRating
6.6
7,222 reviews
Search British Airways flights

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.

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