LON - SLU

£432 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 17/1. 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
£709
Multiple Airlines
Mon 16/3Sun 22/3
LHR - SLU • 1 stop
Cheapest one-way flight
£420
Multiple Airlines
Sat 17/1
LGW - SLU • 3 stops
When to travel
November
Cheapest • 28% price drop
October
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, 16 Mar - Sun, 22 Mar
Multiple Airlines Logo
09:40 - 17:30LHR-SLU
11h 50m1 stop
Multiple Airlines Logo
12:10 - 09:55SLU-LHR
17h 45m1 stop
£709Multiple Airlines
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Wed, 21 Jan - Wed, 4 Feb
Multiple Airlines Logo
13:25 - 12:05LHR-SLU
26h 40m1 stop
Multiple Airlines Logo
15:45 - 08:30SLU-LHR
12h 45m1 stop
£725Multiple Airlines
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Wed, 21 Jan - Wed, 4 Feb
Multiple Airlines Logo
13:25 - 12:05LHR-SLU
26h 40m1 stop
Multiple Airlines Logo
15:45 - 08:30SLU-LHR
12h 45m1 stop
£728Multiple Airlines
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Wed, 21 Jan - Wed, 4 Feb
Multiple Airlines Logo
13:25 - 15:15LHR-SLU
29h 50m1 stop
Multiple Airlines Logo
15:45 - 08:30SLU-LHR
12h 45m1 stop
£729Multiple Airlines
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Wed, 25 Feb - Wed, 11 Mar
Multiple Airlines Logo
10:35 - 19:00LHR-SLU
12h 25m1 stop
Multiple Airlines Logo
15:45 - 08:30SLU-LHR
12h 45m1 stop
£732Multiple Airlines
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Wed, 21 Jan - Wed, 4 Feb
Multiple Airlines Logo
13:25 - 12:05LHR-SLU
26h 40m1 stop
Multiple Airlines Logo
15:45 - 08:30SLU-LHR
12h 45m1 stop
£736Multiple Airlines
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Wed, 25 Feb - Wed, 11 Mar
Multiple Airlines Logo
13:25 - 19:00LHR-SLU
33h 35m1 stop
Multiple Airlines Logo
15:45 - 08:30SLU-LHR
12h 45m1 stop
£738Multiple Airlines
Find Deal
Wed, 21 Jan - Wed, 28 Jan
Multiple Airlines Logo
13:25 - 19:00LHR-SLU
33h 35m1 stop
Multiple Airlines Logo
12:35 - 05:50SLU-LHR
13h 15m1 stop
£739Multiple Airlines
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Mon, 9 Mar - Thu, 19 Mar
Multiple Airlines Logo
13:20 - 15:15LHR-SLU
29h 55m1 stop
Multiple Airlines Logo
15:45 - 08:30SLU-LHR
12h 45m1 stop
£747Multiple Airlines
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Thu, 8 Jan - Thu, 22 Jan
Multiple Airlines Logo
13:20 - 13:10LHR-SLU
27h 50m1 stop
Multiple Airlines Logo
15:20 - 09:35SLU-LHR
14h 15m1 stop
£764Multiple Airlines
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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 March.

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 £507 (return) on average. On the other hand, the most expensive months are April and December, where the average cost of round-trip tickets is £1,505 and £1,013 respectively.

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Good to know - Cheap tickets from London to Castries

Low seasonSeptember
Cheapest flight£420
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly and prices are also 26% 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 £420 for a one-way ticket and £709 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 7500 reviews
6.4Entertainment
6.9Boarding
7.6Crew
6.3Food
6.7Comfort
Airline reviews

The boarding process was chaotic at LHR and the seat was not as comfortable as other airlines....

8.0 ExcellentAnonymous, Nov 2025LHR - PHX
Read more British Airways reviews

The boarding process was chaotic at LHR and the seat was not as comfortable as other airlines....

Everything, every step of the process, from check in, to boarding, to exiting the plane was organized, efficient, and orderly. Excellent experience!

Great flight. One unique individual assisting in business class who should have not been there. Need more generic meals, not British centric.

We always use BA due to the direct flight options, we have always had a pleasant flight with BA.

There might be more food options for people who can't eat so much starch/sugar/bread/rice. Meat, cheese, walnuts/pecans for snack, maybe jerky or other kinds of meat-based snacks would be better than bread and rice and sweets. I had an extra chardonnay, which was fine. The entertainment was great.

Unfortunately, my flight was cancelled because of some sort of emergency over the Atlantic and had to return to London. While I think British Airways made every effort to mitigate the situation, I must say it was still pretty unpleasant. I do appreciate the fact, however, that British Airways put my safety first…and I think the effort to correct a bad situation was very sincere. But I think the process might be handled better in future.

Horrible leg room - coach seating with empty seat in middle on a 3 across seating. You buy business class for comfort which includes leg room. Absolutely no entertainment options either. Awful experience

Flight was 3h50 and was only provided with a packet of oat cookies and offered a cold drink. Thankfully i'd had breakfast but for a morning flight of that length some sort of breakfast should be included. There were 2 toilets for economy but due to turbulence we couldn't use them until the last 1hr which meant the queue was then huge. Would've been nice to open up the business one for those closest to the front to use.

Crew service was poor and very little difference between premium economy and economy. Disappointed.

My bags never made it on the flight and I now have to wait for them to arrive hopefully tomorrow. You can’t even track your bags in the app to see where they are since they didn’t arrive. You have to file a claim and then wait for them to inform you when you will receive your bag. We were already delayed for an hour due to baggage so I don’t understand how my bag didn’t make the flight.

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

Information on your arrival and departure airports

Castries (SLU)