LON - SLU

£490 Find Cheap Flights from London to Castries

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 15/6. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Castries

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Castries, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Castries, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£813
Multiple Airlines
Mon 21/9Thu 1/10
LHR - SLU • 1 stop
Cheapest one-way flight
£490
Multiple Airlines
Mon 15/6
LGW - SLU • 3 stops
When to travel
March
Cheapest • 100% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Castries!
Flight Deals
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

Mon, 21 Sep - Thu, 1 Oct
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
12:35 - 05:50
SLU
-
LHR
12h 15m
1 stop
£813Multiple Airlines
Mon, 24 Aug - Fri, 11 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
£818Multiple Airlines
Sun, 27 Sep - Thu, 1 Oct
Multiple Airlines Logo
11:10 - 19:00
LHR
-
SLU
12h 50m
1 stop
Multiple Airlines Logo
12:35 - 05:50
SLU
-
LHR
12h 15m
1 stop
£835Multiple Airlines
Fri, 12 Jun - Fri, 19 Jun
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
£858Multiple Airlines
Wed, 10 Jun - Sat, 13 Jun
Multiple Airlines Logo
11:10 - 15:15
LHR
-
SLU
33h 05m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£908Multiple Airlines
Thu, 25 Jun - Mon, 29 Jun
Multiple Airlines Logo
10:45 - 19:00
LHR
-
SLU
13h 15m
1 stop
Multiple Airlines Logo
12:35 - 06:15
SLU
-
LHR
12h 40m
1 stop
£914Multiple Airlines
Tue, 27 Oct - Tue, 3 Nov
Multiple Airlines Logo
09:40 - 18:25
LHR
-
SLU
12h 45m
1 stop
Multiple Airlines Logo
16:20 - 09:55
SLU
-
LHR
13h 35m
1 stop
£946Multiple Airlines
Mon, 15 Jun - Mon, 22 Jun
Multiple Airlines Logo
09:35 - 18:55
LHR
-
SLU
14h 20m
1 stop
Multiple Airlines Logo
16:20 - 09:20
SLU
-
LHR
12h 00m
1 stop
£949Multiple Airlines
Sat, 22 Aug - Wed, 26 Aug
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
£963Multiple Airlines
Tue, 27 Oct - Tue, 3 Nov
Multiple Airlines Logo
09:40 - 18:25
LHR
-
SLU
12h 45m
1 stop
Multiple Airlines Logo
16:20 - 09:55
SLU
-
LHR
13h 35m
1 stop
£972Multiple Airlines
Booking Insights

KAYAK’s insights & trends for London to Castries flights

Get data-powered insights and trends into flights from London to Castries to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London to Castries?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to Castries departing in September.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Castries, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Castries is March, where tickets cost £0 (return) on average. On the other hand, the most expensive months are August and December, where the average cost of round-trip tickets is £1,413 and £987 respectively.

Find deals

Good to know - Cheap tickets from London to Castries

Low seasonNovember
Cheapest flight£490
Best time to beat the crowds (36% less expensive on average)
Most popular time to fly (23% more expensive on average)
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 3 days, the lowest price for a flight from London to Castries was £490 for a one-way ticket and £815 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 8007 reviews
7.7Crew
6.8Comfort
6.9Boarding
6.4Entertainment
6.4Food
Airline reviews

Cheap Flight Fares would not provide booking info. I canceled the reservation and we arbitrated with American Express. They provided erroneous info to Amex and it was determined that C.F.F. deserved the price of the ticket. Worse experience I've ever had.

2.0 MediocreAnonymous, May 2026
LHR - ATL
Read more British Airways reviews

Cheap Flight Fares would not provide booking info. I canceled the reservation and we arbitrated with American Express. They provided erroneous info to Amex and it was determined that C.F.F. deserved the price of the ticket. Worse experience I've ever had.

Seating space is appalling. Seats and all surrounding area in "Economy" is built for individuals shorter than 4' 10" and below 120 lbs. Ridiculous. While I'm not expecting fine dining, the food was the worst airplane food that I can recall.

Business class lounge for my gate was closed and no email was sent, causing me to walk back and forth to different gates, etc for over 20 minutes one way. Flight entertainment was mediocre with very poor choices especially for business class cabin. Original flight was cancelled and rebooking was difficult and no reason given for cancellation.

Waiting area not big enough for all the passengers, no airport lounge.

Very comfortable flight and simple and directed one way and back. Amazing price.

We loved our flight attendant, Emma from Scotland, the meal and entertainment offerings were wonderful, the flight was smooth, and enough leg room to stretch. We would fly with you again!

Los Angeles to London. 25th of April 2026. Business class. I was flying backwards with a complete stranger snoring next to me. In Business class. Males and females, strangers lying next to each other. Seats were backwards. I paid for comfort. I got dizziness and stress.

I liked that we got there safely. I disliked long delays, gate and ticket agents incompetence and apathy and having my luggage lost. Five days later I've yet to get anything more than a generic apology from British Air. Luggage yet to be located, much less returned.

Long line with check in at the DIA British Airway counter.

The flights were on time. Cabin crew were nice. The food was terrible! Checking in was not easy using my phone.

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

Information on your arrival and departure airports

Castries (SLU)