LON - SLU

£455 Find Cheap Flights from London to Castries – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Castries departing on 15/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
£629
Multiple Airlines
Wed 18/11Wed 25/11
LGW - SLU • 1 stop
Cheapest one-way flight
£455
Multiple Airlines
Tue 15/9
LGW - SLU • 3 stops
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Booking Insights
Flight Deals

Cheap Flights from London to Castries (LON-SLU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Castries that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Castries

Wed, 18 Nov - Wed, 25 Nov
Multiple Airlines Logo
10:05 - 19:00
LGW
-
SLU
12h 55m
1 stop
Multiple Airlines Logo
15:45 - 09:05
SLU
-
LGW
13h 20m
1 stop
£629Multiple Airlines
Fri, 20 Nov - Sat, 28 Nov
Multiple Airlines Logo
10:05 - 19:00
LGW
-
SLU
12h 55m
1 stop
Multiple Airlines Logo
15:45 - 09:05
SLU
-
LGW
13h 20m
1 stop
£641Multiple Airlines
Mon, 9 Nov - Mon, 16 Nov
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
£645Multiple Airlines
Mon, 5 Oct - Mon, 12 Oct
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
£658Multiple Airlines
Mon, 14 Sep - Mon, 21 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
£660Multiple Airlines
Fri, 20 Nov - Sun, 29 Nov
Multiple Airlines Logo
10:05 - 19:00
LGW
-
SLU
12h 55m
1 stop
Multiple Airlines Logo
15:45 - 09:05
SLU
-
LGW
13h 20m
1 stop
£662Multiple Airlines
Tue, 1 Dec - Fri, 29 Jan
Multiple Airlines Logo
10:05 - 19:00
LGW
-
SLU
12h 55m
1 stop
Multiple Airlines Logo
15:45 - 09:20
SLU
-
LGW
13h 35m
1 stop
£667Multiple Airlines
Fri, 4 Dec - Sat, 12 Dec
Multiple Airlines Logo
10:35 - 19:00
LHR
-
SLU
12h 25m
1 stop
Multiple Airlines Logo
12:35 - 05:50
SLU
-
LHR
13h 15m
1 stop
£669Multiple Airlines
Mon, 9 Nov - Mon, 16 Nov
Multiple Airlines Logo
13:20 - 15:15
LHR
-
SLU
29h 55m
1 stop
Multiple Airlines Logo
15:45 - 08:30
SLU
-
LHR
12h 45m
1 stop
£687Multiple Airlines
Mon, 14 Dec - Thu, 24 Dec
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
£693Multiple Airlines
Booking Insights

Good to know - Cheap tickets from London to Castries

Cheapest flight£455
Flight 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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Castries

  • What is the cheapest flight from London to Castries?

    In the last 5 days, the lowest price for a flight from London to Castries was £455 for a one-way ticket and £629 for a return.

  • Which aircraft models fly most regularly from London to Castries?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from London to Castries?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Castries.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Castries?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Castries from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Castries?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Castries with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Castries?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Castries from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from London to Castries

 
See real verified KAYAK customer reviews for airlines flying from London to Castries. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Castries? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 8106 reviews
6.9Boarding
6.4Entertainment
6.4Food
6.8Comfort
7.7Crew
Airline reviews

I was sent an email that said my card payment was not verified. When I spoke to an agent , he said my card was not verified and the flight I thought I had to booked was no longer available so I booked another flight on another airline(United). Later I got flight updates , etc., concerning my supposed first flight. So if I was charged for this flight on British Airways/American airlines, I need a refund.

2.0 MediocreAnonymous, Jul 2026
LHR - LAX
Read more British Airways reviews

I was sent an email that said my card payment was not verified. When I spoke to an agent , he said my card was not verified and the flight I thought I had to booked was no longer available so I booked another flight on another airline(United). Later I got flight updates , etc., concerning my supposed first flight. So if I was charged for this flight on British Airways/American airlines, I need a refund.

The crew made it a great flight. They were friendly and attentive. They made me want to fly British Airways again.

BA has not been handling priority luggage with any special priority. This time our luggage was distinctly very slow to arrive, well after the first half of items to arrive. Business class flights cost a lot and it would be nice to have that reflected in the speed of baggage handling! (I note that this has worsened in our long experience of BA.) On a different note, we spent 2.5 hours on the plane after landing because of an airport mishap at Boston Logan. The pilot provided reasonably frequent update but more could have been done to ensure passenger comfort, such as more beverage and maybe snack services.

I purchased premier economy seats but I was seated one row off and was sitting in economy my bottle of water and cookie did not compare to the menus handed OP it in premier.

I understand and don't want food on a short trip, but tea and coffe (at least 1 cup) should be free. Nevertheless there was water available and the crew was nice.

Food is horrible. Flight was good and the staff were mostly men.

Delayed suitcase - terrible service to get my suitcase next day, I was informed it would arrive today in the afternoon (Jun/28). Now, I was informed I may or may not receive it until 3 am (Jun/29).

Seats were comfortable, but boarding was the worst I've ever seen. Way too much walking to get onboard as we had to go up & down steps several & then bus took us halfway around the airport for boarding & had to board outside after a very long bus rood.

I will never want to book with these people. They are arrogant and rude. Food was really really bad, crew was even worst

The plane was so old, it needs to be retired! The windows were rattling we paid for premier economy and there was no footrest. Video console was so old, barely had any games for kids. Video console is very slow to react. The gaming console was broken. The foldable food table was sticky and the air hostess had a rough time opening it and closing it for us!!

Everything you need to know for your flight from London to Castries

Information on your arrival and departure airports