LON - SLU

£499 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 26/2. 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
£649
Multiple Airlines
Wed 28/1Mon 2/2
LHR - SLU • 1 stop
Cheapest one-way flight
£499
Multiple Airlines
Thu 26/2
LGW - SLU • 3 stops
When to travel
November
Cheapest • 36% 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

Wed, 28 Jan - Mon, 2 Feb
Multiple Airlines Logo
08:00 - 12:05
LHR
-
SLU
32h 05m
1 stop
Multiple Airlines Logo
16:20 - 09:35
SLU
-
LHR
13h 15m
1 stop
£649Multiple Airlines
Wed, 18 Mar - Sun, 22 Mar
Multiple Airlines Logo
08:00 - 19:00
LHR
-
SLU
15h 00m
1 stop
Multiple Airlines Logo
12:35 - 05:25
SLU
-
LHR
12h 50m
1 stop
£652Multiple Airlines
Sun, 3 May - Sat, 9 May
Multiple Airlines Logo
09:20 - 19:00
LHR
-
SLU
14h 40m
1 stop
Multiple Airlines Logo
15:45 - 09:20
SLU
-
LHR
12h 35m
1 stop
£653Multiple Airlines
Mon, 2 Mar - Mon, 16 Mar
Multiple Airlines Logo
13:20 - 18:25
LHR
-
SLU
33h 05m
1 stop
Multiple Airlines Logo
16:20 - 09:35
SLU
-
LHR
13h 15m
1 stop
£670Multiple Airlines
Fri, 13 Mar - Fri, 20 Mar
Multiple Airlines Logo
09:40 - 19:00
LHR
-
SLU
13h 20m
1 stop
Multiple Airlines Logo
12:35 - 05:25
SLU
-
LHR
12h 50m
1 stop
£691Multiple Airlines
Fri, 13 Mar - Mon, 23 Mar
Multiple Airlines Logo
19:25 - 19:00
LHR
-
SLU
27h 35m
2 stops
Multiple Airlines Logo
16:20 - 09:35
SLU
-
LHR
13h 15m
1 stop
£693Multiple Airlines
Sat, 7 Feb - Mon, 16 Feb
Multiple Airlines Logo
14:30 - 12:05
LHR
-
SLU
25h 35m
1 stop
Multiple Airlines Logo
16:20 - 09:35
SLU
-
LHR
13h 15m
1 stop
£699Multiple Airlines
Wed, 25 Feb - Wed, 11 Mar
Multiple Airlines Logo
08:00 - 19:00
LHR
-
SLU
15h 00m
1 stop
Multiple Airlines Logo
15:45 - 09:55
SLU
-
LHR
14h 10m
1 stop
£701Multiple Airlines
Wed, 25 Feb - Wed, 11 Mar
Multiple Airlines Logo
08:00 - 19:00
LHR
-
SLU
15h 00m
1 stop
Multiple Airlines Logo
12:35 - 05:25
SLU
-
LHR
12h 50m
1 stop
£702Multiple Airlines
Fri, 24 Apr - Sat, 2 May
Multiple Airlines Logo
09:20 - 19:00
LHR
-
SLU
14h 40m
1 stop
Multiple Airlines Logo
15:45 - 09:20
SLU
-
LHR
12h 35m
1 stop
£705Multiple 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 January.

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 November, where tickets cost £494 (return) on average. On the other hand, the most expensive months are April and August, where the average cost of round-trip tickets is £2,028 and £1,011 respectively.

Find deals

Good to know - Cheap tickets from London to Castries

Low seasonSeptember
Cheapest flight£499
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly and prices are also 16% lower 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 £499 for a one-way ticket and £649 for a return.

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

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

  • Which airline alliances offer flights from London to Castries?

    oneworld is the only airline alliance operating flights between London and Castries.

  • 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 7665 reviews
6.9Boarding
6.8Comfort
6.4Food
7.6Crew
6.4Entertainment
Airline reviews

Check-in experience, for business call please provide a premium experience

6.0 GoodAli, Jan 2026
LHR - ORD
Read more British Airways reviews

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Late. And service was very slow - passengers sat for well over an hour with dirty trays etc surrounding them

Entertainment devices on A380 need to be fixed, the seats might do with updates.

I like everything about British Airways. Excellence. Perfect. Exquisite service.

The plane was dirty the food was awful and the boarding process took too long

Everything. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

The business class seating arrangement for LHR to MAA was very uncomfortable. The movie options were terrible.

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

Information on your arrival and departure airports

Castries (SLU)