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LHR - SLU

£673 Find cheap flights from London Heathrow Airport to Castries

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Castries departing on 7/11. 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
0 bags
Sat 22/6
Sat 29/6

Search 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
In the last 7 days, travellers have searched 43,800,826 times on KAYAK, and here's why:

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Cheap flight deals from Heathrow to Castries (LHR-SLU)

 
These are the cheapest deals for flights from Heathrow to Castries currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from Heathrow to Castries

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Heathrow to Castries.

Recent one-way flight deals from Heathrow to Castries

Only flying one-way? Below are some of the best one-way flight deals from Heathrow to Castries found on KAYAK recently.

Recent last-minute flight deals from Heathrow to Castries

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Heathrow to Castries.

Recent direct flight deals from Heathrow to Castries

The latest deals for direct flights from Heathrow to Castries so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Heathrow to Castries

Find recent round-trip train or bus tickets from Heathrow to Castries.

All round-trip flight deals to Castries

The cheapest plane tickets to Castries found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
12:10 - 13:10LHR-SLU
29h 00m1 stop
15:20 - 10:05SLU-LHR
14h 45m1 stop
Thu, 7 Nov - Thu, 14 Nov
12:10 - 13:10LHR-SLU
29h 00m1 stop
15:20 - 08:25SLU-LHR
13h 05m1 stop
Thu, 14 Nov - Thu, 21 Nov
12:10 - 14:35LHR-SLU
30h 25m1 stop
12:10 - 10:05SLU-LHR
17h 55m1 stop
Wed, 13 Nov - Sun, 17 Nov
11:25 - 19:00LHR-SLU
12h 35m1 stop
09:25 - 06:20SLU-LHR
15h 55m1 stop
Thu, 27 Jun - Wed, 18 Sep
11:25 - 11:25LHR-SLU
29h 00m1 stop
09:25 - 06:20SLU-LHR
15h 55m1 stop
Mon, 23 Sep - Mon, 30 Sep
12:10 - 14:35LHR-SLU
30h 25m1 stop
12:10 - 10:50SLU-LHR
18h 40m2 stops
Wed, 13 Nov - Sun, 17 Nov
11:15 - 11:25LHR-SLU
29h 10m1 stop
07:30 - 12:05SLU-LHR
23h 35m1 stop
Sat, 24 Aug - Tue, 3 Sep
11:25 - 19:00LHR-SLU
12h 35m1 stop
09:25 - 06:20SLU-LHR
15h 55m1 stop
Tue, 10 Sep - Fri, 20 Sep
11:25 - 19:00LHR-SLU
12h 35m1 stop
09:25 - 06:20SLU-LHR
15h 55m1 stop
Wed, 19 Jun - Wed, 18 Sep
11:25 - 19:00LHR-SLU
12h 35m1 stop
16:25 - 06:20SLU-LHR
32h 55m1 stop
Tue, 25 Jun - Sun, 15 Sep
11:25 - 19:00LHR-SLU
12h 35m1 stop
£1,044
Find Deal
Wed, 11 Sep
11:20 - 11:30LHR-SLU
29h 10m3 stops
£1,557
Find Deal
Thu, 3 Oct
11:25 - 19:00LHR-SLU
12h 35m1 stop
£1,769
Find Deal
Thu, 3 Oct
11:25 - 11:30LHR-SLU
29h 05m2 stops
£2,699
Find Deal
Thu, 3 Oct
06:35 - 17:30LHR-SLU
39h 55m3 stops
£3,514
Find Deal
Sun, 2 Jun
11:25 - 19:00LHR-SLU
12h 35m1 stop
£4,834
Find Deal
Sun, 2 Jun
11:15 - 19:00LHR-SLU
12h 45m1 stop
16:25 - 12:05SLU-LHR
14h 40m1 stop
£1,750
Find Deal
Fri, 24 May - Mon, 27 May
11:25 - 15:55LHR-SLU
33h 30m1 stop
16:25 - 06:20SLU-LHR
32h 55m1 stop
£1,853
Find Deal
Tue, 28 May - Tue, 11 Jun
11:15 - 19:00LHR-SLU
12h 45m1 stop
11:55 - 12:05SLU-LHR
19h 10m2 stops
£1,925
Find Deal
Fri, 24 May - Mon, 27 May
14:10 - 19:00LHR-SLU
33h 50m3 stops
09:25 - 11:50SLU-LHR
21h 25m2 stops
£2,210
Find Deal
Fri, 24 May - Mon, 27 May
11:25 - 15:55LHR-SLU
33h 30m1 stop
07:30 - 06:20SLU-LHR
17h 50m1 stop
£2,263
Find Deal
Tue, 28 May - Tue, 4 Jun
11:25 - 19:00LHR-SLU
12h 35m1 stop
11:55 - 06:20SLU-LHR
13h 25m2 stops
£2,344
Find Deal
Tue, 28 May - Tue, 4 Jun
14:10 - 19:00LHR-SLU
33h 50m3 stops
09:25 - 11:55SLU-LHR
45h 30m3 stops
£2,435
Find Deal
Fri, 24 May - Mon, 27 May
11:15 - 19:00LHR-SLU
12h 45m1 stop
09:25 - 11:55SLU-LHR
45h 30m3 stops
£3,046
Find Deal
Fri, 24 May - Mon, 27 May
11:15 - 19:00LHR-SLU
12h 45m1 stop
11:55 - 12:05SLU-LHR
19h 10m2 stops
£4,318
Find Deal
Fri, 24 May - Mon, 27 May

Flights from Heathrow to Castries - Travel Insights & Trends

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London Heathrow Airport 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 Heathrow Airport to Castries is May, where tickets cost £539 on average. On the other hand, the most expensive months are December and August, where the average cost of tickets is £1,130 and £797 respectively.

How far in advance should I book a flight from London Heathrow Airport to Castries?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London Heathrow Airport to Castries, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London Heathrow Airport to Castries, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 2 days before departure.

Good to know - Cheap tickets from London Heathrow Airport to Castries

Low season

July

High season

May

Cheapest flight

£673
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from London Heathrow Airport to Castries

When to book flights from Heathrow to Castries

Are your dates flexible? Find out the best times to travel from Heathrow 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 London Heathrow Airport to Castries flights

  • What is the cheapest flight from London Heathrow Airport to Castries?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Castries was £1,328 for a one-way ticket and £856 for a return.

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

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

  • How does KAYAK find such low prices on flights from London Heathrow Airport 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 Heathrow Airport to Castries.

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

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

  • What is the Hacker Fare option on flights from London Heathrow Airport 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 Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport 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 Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Heathrow 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 Heathrow 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.
6.8
British AirwaysOverall score based on 6788 reviews
6.5Entertainment
7.0Boarding
6.8Comfort
7.7Crew
6.4Food
Airline reviews

Left late. Crowded like cattle. Standing and waiting. Food on board getting worse.

4.0 OkaySimon, May 2024LHR - AMS
Read more about British Airways reviews

Left late. Crowded like cattle. Standing and waiting. Food on board getting worse.

Terrible- the flight time was delayed and then I was denied boarding because I arrived at the new time of departure

Flight delayed an hour due to plane maintenance issues after getting in line to board. Issue was plane galley ovens which eliminated hot meals for overseas flight. Cold selections were limited due to availability. Drink and meal service (already an hour delayed) was very slow. Upon arrival in Nashville, had to sit at gate for about 15 minutes before disembarking with no explanation. Local police then boarded plane as we were disembarking so maybe that was the issue.

Boarding good. Seats uncomfortable when lie flat. Food was awful. Tasted stale and chicken was dry. No live tv or flight map. Had to pay for internet.

Poor technical details on this plane. 1) There was no WiFi on an 8 hour long-haul flight. So no work could be done. That's below the standard expected for airlines these days. 2) The power outlet at my seat was busted and not working. 3) The headphone jack was loose and I had to keep adjusting my headphones to get good reception, or when it slipped out. - The flight was delayed to due mechanics. Sometimes this can't be avoided, I understand, and it's a big inconvenience to arrive that much later when traveling across time zones (then arriving at 4am from the prior time zone). - Also unique to this flight, the northern lights were visible on the right side of the aircraft, but I only found out after we landed (b/c again no wifi). I understand there are considerations about people being out of their seats to look, but I feel extremely disappointed and resentful that I wasn't told so that I could have a chance to look at this probably once-in-a-lifetime cosmic event from a view in the sky. - Flight crew was otherwise friendly and helpful.

Our flight was delayed by over 6 hours. We then had to deplane, stay overnight in a hotel then fly out the next day, 23 hours late.

I would have preferred something lighter for the second meal. Maybe a small sandwich .

They cancelled our flight the morning of departure at 4:30am.

We were told to check our bags at the last minute, and the communication was poor.

Lost our luggage in Heathrow. Showed up 3 days into a 7 day vacation. Very inconvenient and disappointing!!

Book cheap flights from London to Castries

Cheapest flights to Castries from London found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Castries found on KAYAK in the last 72 hours.
11/9Wed
1 stop
12h 35mLHR-SLU
£1,044
3/10Thu
3 stops
29h 10mLHR-SLU
£1,557
3/10Thu
1 stop
12h 35mLHR-SLU
£1,769
3/10Thu
2 stops
29h 05mLHR-SLU
£2,699
2/6Sun
3 stops
39h 55mLHR-SLU
£3,514
2/6Sun
1 stop
12h 35mLHR-SLU
£4,834

Search by stops

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Last minute flights from Heathrow to Castries

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to Castries that are departing in the next 10 days.
24/5Fri
multi-stop
12h 45mLHR-SLU
27/5Mon
multi-stop
14h 40mSLU-LHR
£1,750
28/5Tue
multi-stop
33h 30mLHR-SLU
11/6Tue
multi-stop
32h 55mSLU-LHR
£1,853
24/5Fri
multi-stop
12h 45mLHR-SLU
27/5Mon
multi-stop
19h 10mSLU-LHR
£1,925
24/5Fri
multi-stop
33h 50mLHR-SLU
27/5Mon
multi-stop
21h 25mSLU-LHR
£2,210
28/5Tue
multi-stop
33h 30mLHR-SLU
4/6Tue
multi-stop
17h 50mSLU-LHR
£2,263
28/5Tue
multi-stop
12h 35mLHR-SLU
4/6Tue
multi-stop
13h 25mSLU-LHR
£2,344
24/5Fri
multi-stop
33h 50mLHR-SLU
27/5Mon
multi-stop
45h 30mSLU-LHR
£2,435
24/5Fri
multi-stop
12h 45mLHR-SLU
27/5Mon
multi-stop
45h 30mSLU-LHR
£3,046
24/5Fri
multi-stop
12h 45mLHR-SLU
27/5Mon
multi-stop
19h 10mSLU-LHR
£4,318

Search by stops

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London Heathrow Airport - Castries Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Destination:

Castries (SLU)Saint Lucia

Cabin classes:

Browse destinations: