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Cheap flights from London to Castries from £553

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 to Castries departing on 15/11. 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
1 adult, Economy, 0 bags
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Find the cheapest flights from London to Castries

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:05 - 19:00
LGW
-
SLU
12h 55m
1 stop
Multiple Airlines Logo
15:45 - 10:25
SLU
-
LGW
14h 40m
1 stop
£631Multiple Airlines
Thu, 12 Nov - Thu, 26 Nov
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
£657Multiple Airlines
Thu, 3 Sep - Thu, 17 Sep
Multiple Airlines Logo
10:05 - 19:00
LGW
-
SLU
12h 55m
1 stop
Multiple Airlines Logo
15:45 - 10:25
SLU
-
LGW
14h 40m
1 stop
£759Multiple Airlines
Sat, 7 Nov - Mon, 7 Dec
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
£775Multiple Airlines
Sat, 26 Sep - Mon, 5 Oct
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
15:45 - 08:30
SLU
-
LHR
12h 45m
1 stop
£795Multiple Airlines
Sat, 10 Oct - Tue, 10 Nov
Multiple Airlines Logo
11:10 - 12:05
LHR
-
SLU
29h 55m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£795Multiple Airlines
Fri, 10 Jul - Sat, 25 Jul
Multiple Airlines Logo
13:25 - 12:05
LHR
-
SLU
26h 40m
1 stop
Multiple Airlines Logo
15:45 - 08:30
SLU
-
LHR
12h 45m
1 stop
£812Multiple Airlines
Wed, 11 Nov - Wed, 18 Nov
Multiple Airlines Logo
09:40 - 18:55
LHR
-
SLU
13h 15m
1 stop
Multiple Airlines Logo
16:50 - 09:55
SLU
-
LHR
13h 05m
1 stop
£832Multiple Airlines
Mon, 9 Nov - Mon, 16 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
£841Multiple Airlines
Sun, 26 Jul - Fri, 4 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
£843Multiple Airlines
Mon, 13 Jul - Fri, 4 Sep

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momondo Fare Finder

 
Customise your flight search to find flights from London 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 12 June 2026.
Use the filters below to find and compare flights from London to Castries that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Thu 12/11

10:05-19:00

1 stop12h 55m

Castries George F. L. Charle

Thu 26/11

15:45-10:25

1 stop14h 40m

£631
Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 3/9

10:45-19:00

1 stop13h 15m

Castries George F. L. Charle

Thu 17/9

12:35-05:50

1 stop12h 15m

£657

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Sat 7/11

10:05-19:00

1 stop12h 55m

Castries George F. L. Charle

Mon 7/12

15:45-10:25

1 stop14h 40m

£759

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 26/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Mon 5/10

12:35-06:15

1 stop12h 40m

£775

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 10/10

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Tue 10/11

15:45-08:30

1 stop12h 45m

£795

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 10/7

11:10-12:05

1 stop29h 55m

Castries George F. L. Charle

Sat 25/7

12:35-06:15

1 stop12h 40m

£795

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 11/11

13:25-12:05

1 stop26h 40m

Castries George F. L. Charle

Wed 18/11

15:45-08:30

1 stop12h 45m

£812

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 9/11

09:40-18:55

1 stop13h 15m

Castries George F. L. Charle

Mon 16/11

16:50-09:55

1 stop13h 05m

£832

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sun 26/7

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Fri 4/9

12:35-06:15

1 stop12h 40m

£841

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 13/7

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Fri 4/9

12:35-06:15

1 stop12h 40m

£843

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Castries from

How to get the cheapest flight ticket from London 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 KLM are the top three most popular airlines that fly to Castries from London according to our data. British Airways is the first choice among our users, with 93% 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 to Castries

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

Cheap London to Castries (LON to SLU) flight deals and tips

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

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from London to Castries takes 12h 25m
There are no direct flights from London to Castries. There are no popular flight routes from London to Castries.
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Frequently asked questions about flying from London to Castries

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

    London and Castries George F. L. Charle are 4217.4 mi apart from one another. A reasonable flight in good conditions will take 12h 25m.

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

    Prices for flights from London to Castries George F. L. Charle Airport are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London 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 you'll need for your trip to Castries George F. L. Charle Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Castries George F. L. Charle Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Castries . Millions of users trust and use momondo every year so you are in good hands.

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

Flights from London to Castries with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Castries.

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

If you are simply researching potential flights to Castries, momondo offers a useful price alert feature which will track prices for flights to Castries from London and alert you when they change.

An easier way to manage your Castries trip

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