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Cheap flights from London Heathrow Airport to Castries from £564

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SLU
24 Aug — 31 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Castries

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Castries
Explore the most affordable flight options available from Heathrow to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 July 2026.

Mon 9/1113:20
LHR
-
SLU
1 stop29h 55m
Multiple Airlines
Mon 16/1115:45
SLU
-
LHR
1 stop12h 45m
Multiple Airlines
Deal found 20/7£677
Tue 15/911:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Sun 20/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 24/7£692
Mon 14/1210:35
LHR
-
SLU
1 stop12h 25m
Multiple Airlines
Mon 21/1212:35
SLU
-
LHR
1 stop13h 15m
Multiple Airlines
Deal found 22/7£699
Mon 9/1113:20
LHR
-
SLU
1 stop29h 55m
Multiple Airlines
Mon 7/1215:45
SLU
-
LHR
1 stop12h 45m
Multiple Airlines
Deal found 24/7£705
Mon 21/911:10
LHR
-
SLU
1 stop29h 55m
Multiple Airlines
Mon 28/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 21/7£712
Mon 7/911:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Tue 3/1115:45
SLU
-
LHR
1 stop12h 45m
Multiple Airlines
Deal found 24/7£729
Wed 16/911:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Wed 23/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 22/7£737
Mon 21/911:10
LHR
-
SLU
1 stop29h 55m
Multiple Airlines
Sun 4/1012:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 20/7£748
Tue 22/1213:25
LHR
-
SLU
1 stop26h 40m
Multiple Airlines
Tue 29/1215:45
SLU
-
LHR
1 stop12h 45m
Multiple Airlines
Deal found 21/7£749

Find flight deals from Heathrow to Castries

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Castries (SLU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 July 2026.

Round-trip from

£677

One-way from

£564
9/11-16/11
  • 9/11-16/11
  • 2 total stops
  • 42h 40m total
  • London to Castries
Search Deals
27/8
  • 27/8
  • 1 total stop
  • 13h 15m total
  • London to Castries
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Castries that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 July 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Castries that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 16/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Wed 23/9

12:35-06:15

1 stop12h 40m

£737

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 11/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Mon 21/9

12:35-06:15

1 stop12h 40m

£772

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 7/9

09:35-18:55

1 stop14h 20m

Castries George F. L. Charle

Wed 7/10

10:15-06:20

3 stops39h 05m

£1,081

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 19/8

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Wed 26/8

12:35-06:15

1 stop12h 40m

£1,136

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 5/9

20:50-18:10

3 stops26h 20m

Castries George F. L. Charle

Mon 2/11

12:35-21:00

3 stops28h 25m

£1,156

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 21/9

12:40-08:10

3 stops24h 30m

Castries George F. L. Charle

Sun 4/10

05:00-20:10

2 stops34h 10m

£1,232

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 28/8

17:40-22:10

2 stops33h 30m

Castries George F. L. Charle

Mon 31/8

19:40-20:10

2 stops19h 30m

£1,373

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 30/7

10:45-19:00

1 stop13h 15m

Castries George F. L. Charle

Sat 8/8

09:10-06:15

1 stop16h 05m

£1,376
Cheapest one-way

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 27/8

10:45-19:00

1 stop13h 15m

£564

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 21/8

11:10-15:15

1 stop33h 05m

£592

Flights are sorted by cheapest return flights first.

Deals found on 24/7

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight from Heathrow to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Castries. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Castries from London Heathrow?

    Castries George F. L. Charle (SLU), located 0.7 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Castries. 0 airlines have flights to George F. L. Charle from London Heathrow on a regular basis. Booking flights from London Heathrow to Castries George F. L. Charle should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

  • Can I find deals for flights from Heathrow to Castries that include hotel bookings?

    Yes. In addition to deals on Heathrow to Castries flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Castries?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Castries.

  • Can I find deals for business class flights from Heathrow to Castries?

    Yes. Cheapflights offers flight deals from Heathrow to Castries by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Gros Islet
Rodney Bay

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Castries

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Castries flights
Gatwick to Castries flights
London City to Castries flights
Gatwick to Castries flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Castries?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Castries from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Castries?

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Castries for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Heathrow to Castries with no change fees?

Yes! Cheapflights helps users easily find flights from Heathrow to Castries with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Castries become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Castries from Heathrow today and book when prices fit your budget.

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