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Cheap flights from London to Castries from £436

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 24/3. 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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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
£852Multiple Airlines
Tue, 2 Jun - Sun, 7 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
£863Multiple Airlines
Mon, 1 Jun - Tue, 30 Jun
Multiple Airlines Logo
10:45 - 12:05
LHR
-
SLU
30h 20m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£885Multiple Airlines
Thu, 14 May - Mon, 22 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
£922Multiple Airlines
Wed, 1 Jul - Tue, 7 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
£931Multiple Airlines
Tue, 23 Jun - Sat, 27 Jun
Multiple Airlines Logo
09:35 - 18:25
LHR
-
SLU
13h 50m
1 stop
Multiple Airlines Logo
15:45 - 09:20
SLU
-
LHR
12h 35m
1 stop
£955Multiple Airlines
Tue, 16 Jun - Wed, 24 Jun
Multiple Airlines Logo
09:35 - 19:00
LHR
-
SLU
14h 25m
1 stop
Multiple Airlines Logo
15:45 - 09:20
SLU
-
LHR
12h 35m
1 stop
£957Multiple Airlines
Wed, 9 Sep - Wed, 23 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
£981Multiple Airlines
Wed, 6 May - Tue, 12 May
Multiple Airlines Logo
09:35 - 19:00
LHR
-
SLU
14h 25m
1 stop
Multiple Airlines Logo
15:45 - 09:20
SLU
-
LHR
12h 35m
1 stop
£996Multiple Airlines
Fri, 5 Jun - Fri, 19 Jun
Multiple Airlines Logo
09:35 - 19:00
LHR
-
SLU
14h 25m
1 stop
Multiple Airlines Logo
15:45 - 09:20
SLU
-
LHR
12h 35m
1 stop
£997Multiple Airlines
Wed, 3 Jun - Wed, 10 Jun

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 17 March 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
Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 2/6

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sun 7/6

12:35-06:15

1 stop12h 40m

£852

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 1/6

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Tue 30/6

12:35-06:15

1 stop12h 40m

£863

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 14/5

10:45-12:05

1 stop30h 20m

Castries George F. L. Charle

Mon 22/6

12:35-06:15

1 stop12h 40m

£885

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 1/7

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Tue 7/7

12:35-06:15

1 stop12h 40m

£922

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 23/6

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sat 27/6

12:35-06:15

1 stop12h 40m

£931

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 16/6

09:35-18:25

1 stop13h 50m

Castries George F. L. Charle

Wed 24/6

15:45-09:20

1 stop12h 35m

£955

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 9/9

09:35-19:00

1 stop14h 25m

Castries George F. L. Charle

Wed 23/9

15:45-09:20

1 stop12h 35m

£957

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 6/5

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Tue 12/5

12:35-06:15

1 stop12h 40m

£981

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 5/6

09:35-19:00

1 stop14h 25m

Castries George F. L. Charle

Fri 19/6

15:45-09:20

1 stop12h 35m

£996

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 3/6

09:35-19:00

1 stop14h 25m

Castries George F. L. Charle

Wed 10/6

15:45-09:20

1 stop12h 35m

£997

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, Finnair and Air Canada 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 90% of people opting to fly with this airline when travelling to Castries. Keep in mind that there are 4 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 45m

Direct flights

None
The fastest flight from London to Castries takes 12h 45m
There are no direct flights from London to Castries. There are no popular flight routes from London to Castries.
Search flight deals

  • 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 45m.

  • 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 many operators does momondo search for flights from London to Castries George F. L. Charle Airport?

  • 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?

Best airlines flying from London to Castries

Compare and see reviews for airlines that fly from London to Castries with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £493Free CancellationRating
6.7
7,797 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?

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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