LON - SLU

£520 Find Cheap Flights from London to Castries – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
£581
Typical prices: £748-£1,026
Multiple Airlines
Mon 29/10Sun 11/11
LGW - SLU • 1 stop
Cheapest one-way flight
£512
Typical prices: £511-£645
Multiple Airlines
Fri 30/11
LGW - SLU • 1 stop
Direct flights
Not available
There are currently no direct flights between London and Castries. You'll need to take a connecting flight to reach the destination.
Insights
Insights
Top routes
LGW - SLU
Cheapest • 2% average savings
LHR - SLU
Most popular
Insights
Insights
When to travel
February
Cheapest • 16% price drop
January
Most popular
Good to know
+1
Good to know
+1
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We hope you enjoy your trip to Castries!
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Booking Insights
Flight Deals

Cheap Flights from London to Castries (LON-SLU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Castries

Thu, 29 Oct - Wed, 11 Nov
Multiple Airlines Logo
10:05 - 19:00LGW  London Gatwick-SLU Castries George F. L. Charle
12h 55m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 09:05SLU  Castries George F. L. Charle-LGW London Gatwick
13h 20m1 stop Bridgetown Grantley Adams Intl
£581Multiple Airlines
Wed, 4 Nov - Wed, 11 Nov
Multiple Airlines Logo
10:05 - 19:00LGW  London Gatwick-SLU Castries George F. L. Charle
12h 55m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 09:05SLU  Castries George F. L. Charle-LGW London Gatwick
13h 20m1 stop Bridgetown Grantley Adams Intl
£583Multiple Airlines
Mon, 2 Nov - Mon, 9 Nov
Multiple Airlines Logo
10:05 - 19:00LGW  London Gatwick-SLU Castries George F. L. Charle
12h 55m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 10:25SLU  Castries George F. L. Charle-LGW London Gatwick
14h 40m1 stop Bridgetown Grantley Adams Intl
£583Multiple Airlines
Mon, 2 Nov - Sun, 15 Nov
Multiple Airlines Logo
10:05 - 19:00LGW  London Gatwick-SLU Castries George F. L. Charle
12h 55m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 09:05SLU  Castries George F. L. Charle-LGW London Gatwick
13h 20m1 stop Bridgetown Grantley Adams Intl
£583Multiple Airlines
Thu, 29 Oct - Wed, 11 Nov
Multiple Airlines Logo
10:05 - 19:00LGW  London Gatwick-SLU Castries George F. L. Charle
12h 55m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 09:05SLU  Castries George F. L. Charle-LGW London Gatwick
13h 20m1 stop Bridgetown Grantley Adams Intl
£583Multiple Airlines
Thu, 29 Oct - Wed, 11 Nov
Multiple Airlines Logo
10:05 - 19:00LGW  London Gatwick-SLU Castries George F. L. Charle
12h 55m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 09:05SLU  Castries George F. L. Charle-LGW London Gatwick
13h 20m1 stop Bridgetown Grantley Adams Intl
£584Multiple Airlines
Mon, 2 Nov - Sun, 15 Nov
Multiple Airlines Logo
08:00 - 19:00LHR  London Heathrow-SLU Castries George F. L. Charle
15h 00m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 10:55SLU  Castries George F. L. Charle-LHR London Heathrow
15h 10m1 stop Bridgetown Grantley Adams Intl
£587Multiple Airlines
Fri, 5 Mar - Mon, 15 Mar
Multiple Airlines Logo
10:05 - 19:00LGW  London Gatwick-SLU Castries George F. L. Charle
12h 55m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 10:25SLU  Castries George F. L. Charle-LGW London Gatwick
14h 40m1 stop Bridgetown Grantley Adams Intl
£590Multiple Airlines
Mon, 18 Jan - Tue, 9 Feb
Multiple Airlines Logo
10:05 - 19:00LGW  London Gatwick-SLU Castries George F. L. Charle
12h 55m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 09:20SLU  Castries George F. L. Charle-LGW London Gatwick
13h 35m1 stop Bridgetown Grantley Adams Intl
£590Multiple Airlines
Wed, 4 Nov - Wed, 11 Nov
Multiple Airlines Logo
10:05 - 19:00LGW  London Gatwick-SLU Castries George F. L. Charle
12h 55m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
15:45 - 09:05SLU  Castries George F. L. Charle-LGW London Gatwick
13h 20m1 stop Bridgetown Grantley Adams Intl
£591Multiple Airlines
Booking Insights

Price, demand, and travel trends for London to Castries flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from London to Castries with more confidence.

What is the cheapest London to Castries flight route?

There's little price difference between London to Castries routes. They average around £863 return, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from London to Castries?

Thursday is the cheapest day of the week to fly from London to Castries and is 13% cheaper than the average day. Sunday is the most expensive day with flight prices 11% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from London to Castries?

•February is the cheapest month to fly from London to Castries at £739 return.
•May (£4,171) and March (£1,372) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 464% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for London to Castries flights

Low season

September

Cheapest flight

£512
Most popular time to fly and prices are also 14% lower on average.
Flights from London Gatwick Airport to Castries

When to book flights from London to Castries

Are your dates flexible? Find out the best times to travel from London to Castries based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your London to Castries flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which cabin classes can I book on flights from London to Castries?

    Three cabin classes are available on flights from London to Castries:

    • Economy class
    • Premium Economy Class
    • Business Class

  • How long is a flight from London to Castries?

    A direct flight from London to Castries takes 0h 00m, covering 4,217 miles.

  • Do I need a passport to fly from London to Castries?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a London to Castries flight?

    Return flights from London to Castries range from £748 to £1,026, with an average of £879 over the past 12 months. Anything below £748 counts as a good deal.

  • Have flight prices from London to Castries changed much recently?

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £581 to £3,105. That means the highest observed fare was about 5x higher than the lowest one.

  • How are flight prices from London to Castries looking right now?

    One-way fares from London to Castries are currently in line with typical prices for this route. Average one-way fares are about £582.

  • Which car hire options are available at Castries George F. L. Charle Airport (SLU)?

    Castries George F. L. Charle Airport (SLU) hosts 5 major car hire companies, with daily rates starting from around £10 for economy cars. Top options include:
    • Ace
    • Drive A Matic
    • Final Rentals
    • Sixt
    • Hertz

  • Which airports can I use when flying from London to Castries?

    Flights from London to Castries may depart from several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN). Flights usually arrive at Castries George F. L. Charle (SLU).

  • Which airports do connecting flights from London to Castries pass through?

    Most connecting flights from London to Castries pass through Bridgetown Grantley Adams Intl (BGI), which handles 100% of one-stop traffic on this route. Other stopover airports each see under 5%.

  • Can I save money by using flexible dates for flights from London to Castries?

    Yes. Being flexible with your travel dates can save you up to 22% on the London to Castries route. Thursday is the cheapest departure day at £772 return on average, while Sunday is the most expensive at £981, a difference of £209. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What is the time difference between London and Castries?

    Castries is 5 hours behind London (Atlantic Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking London to Castries flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure instead of Sunday. On this route, Thursday flights average £772 – about £209 less than Sunday (21% savings) based on the last 12 months.
  • If you can choose when to travel, plan your London to Castries trip for February. Fares historically average £739 return in that month – typically £3,432 less than the most expensive month, which is May (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Castries George F. L. Charle Airport.
    - Stolen Time St. Lucia
    - Sandals Regency La Toc

More options for your flight from London to Castries

Complete your trip to Castries with a hotel stay or car hire

Car hire in Castries
Hotels in Castries