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Cheap flights from London to Castries from £427

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 27/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SLU
19 May — 26 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Castries

Enter your travel dates to find the best prices.

Cheapest flights from London to Castries
Explore the most affordable flight options available from London to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 April 2026.

Sat 14/1110:05
LGW
-
SLU
1 stop12h 55m
Multiple Airlines
Tue 24/1115:45
SLU
-
LGW
1 stop13h 35m
Multiple Airlines
Deal found 16/4£760
Sat 21/1110:05
LGW
-
SLU
1 stop12h 55m
Multiple Airlines
Sat 28/1115:45
SLU
-
LGW
1 stop13h 20m
Multiple Airlines
Deal found 18/4£794
Sat 21/1113:25
LHR
-
SLU
1 stop29h 50m
Multiple Airlines
Sat 28/1115:45
SLU
-
LHR
1 stop12h 45m
Multiple Airlines
Deal found 18/4£821
Sun 22/1110:05
LGW
-
SLU
1 stop12h 55m
Multiple Airlines
Mon 30/1115:45
SLU
-
LGW
1 stop14h 40m
Multiple Airlines
Deal found 18/4£840
Thu 16/410:20
LGW
-
SLU
2 stops33h 15m
Multiple Airlines
Thu 23/409:10
SLU
-
LGW
1 stop15h 50m
Multiple Airlines
Deal found 15/4£842
Thu 24/910:45
LHR
-
SLU
1 stop13h 15m
Multiple Airlines
Fri 25/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 15/4£847
Thu 4/610:45
LHR
-
SLU
1 stop13h 15m
Multiple Airlines
Tue 17/1112:35
SLU
-
LHR
1 stop13h 15m
Multiple Airlines
Deal found 15/4£854
Thu 1/1010:45
LHR
-
SLU
1 stop13h 15m
Multiple Airlines
Thu 22/1012:35
SLU
-
LHR
1 stop12h 15m
Multiple Airlines
Deal found 16/4£857
Sun 22/1113:20
LHR
-
SLU
1 stop26h 45m
Multiple Airlines
Mon 30/1115:45
SLU
-
LHR
1 stop12h 45m
Multiple Airlines
Deal found 18/4£861
Thu 11/610:45
LHR
-
SLU
1 stop13h 15m
Multiple Airlines
Thu 23/709:10
SLU
-
LHR
1 stop15h 40m
Multiple Airlines
Deal found 18/4£863
Thu 8/1010:45
LHR
-
SLU
1 stop13h 15m
Multiple Airlines
Sun 11/1012:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 16/4£865
Sat 5/911:10
LHR
-
SLU
1 stop29h 55m
Multiple Airlines
Sat 12/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 15/4£875

Find flight deals from London to Castries

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 19 April 2026.

Round-trip from

£847

One-way from

£427

Popular in

August

Cheapest in

November

Good round-trip deal

£665 or less

Good one-way deal

£543 or less
24/9-25/9
  • 24/9-25/9
  • 2 total stops
  • 25h 55m total
  • London to Castries
Search Deals
27/5
  • 27/5
  • 3 total stops
  • 45h 35m total
  • London to Castries
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£112 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease (£55 potential savings vs. average return price).
Search Deals
Price to beat on a round-trip flight from London (LON) to Castries George F. L. Charle.
Search Deals
Price to beat on a one-way flight from London (LON) to Castries George F. L. Charle.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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 19 April 2026.
Use the filters below to find and compare flights from London to Castries that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 24/9

10:45-19:00

1 stop13h 15m

Castries George F. L. Charle

Fri 25/9

12:35-06:15

1 stop12h 40m

£847
Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sun 14/6

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sat 25/7

12:35-06:15

1 stop12h 40m

£897

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Mon 25/5

09:40-12:05

3 stops31h 25m

Castries George F. L. Charle

Sat 30/5

17:50-07:55

3 stops33h 05m

£1,046

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 13/5

11:20-13:10

2 stops30h 50m

Castries George F. L. Charle

Wed 20/5

10:15-20:10

3 stops28h 55m

£1,072

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Sat 16/5

09:40-14:35

2 stops33h 55m

Castries George F. L. Charle

Sat 23/5

17:50-10:45

2 stops35h 55m

£1,119

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 12/5

20:05-19:00

3 stops27h 55m

Castries George F. L. Charle

Sat 16/5

17:50-20:10

2 stops21h 20m

£1,147

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Fri 22/5

09:40-13:10

3 stops32h 30m

Castries George F. L. Charle

Sat 30/5

17:50-10:45

2 stops35h 55m

£1,155

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Sat 2/5

05:20-14:35

3 stops38h 15m

Castries George F. L. Charle

Sat 16/5

17:50-10:45

2 stops35h 55m

£1,176

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Wed 27/5

21:15-17:05

3 stops24h 50m

Castries George F. L. Charle

Thu 11/6

13:55-18:40

3 stops23h 45m

£1,185

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Thu 4/6

13:05-14:35

2 stops30h 30m

Castries George F. L. Charle

Thu 18/6

17:50-06:20

2 stops31h 30m

£1,198

Flights are sorted by cheapest return flights first.

Deals found on 18/4

Showing 1-10 of 39 resultsSorted by cheapest first
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Best time to book a flight from London to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from London 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.

Cheapflights Insights

Everything you need to know about your flight from London to Castries
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Castries

Get insights into the airlines that provide service to Castries. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Castries. Reviews last updated 19 April 2026.
Get a feel of what it's like to fly with British Airways from London to Castries by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,893 reviews
Check prices

Crew

7.7

Comfort

6.8

Boarding

6.9

Food

6.4

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
6.0
Good

David,Jan 2026

LHR - MAD

It was a very old and tried plane. Lots of duck tape holding things together. Staff and food very good. Boarding was chaos at Madrid. Arrival in Lima swift and effective.
British Airways
6.7
Okay
7,893 reviews
British Airways
6.7
Okay
7,893 reviews
Check prices

Crew

7.7

Comfort

6.8

Boarding

6.9

Food

6.4

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
6.0
Good

David,Jan 2026

LHR - MAD

It was a very old and tried plane. Lots of duck tape holding things together. Staff and food very good. Boarding was chaos at Madrid. Arrival in Lima swift and effective.

Related info for your journey

Find useful and relevant information for your journey from London 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?

    For a flight from London to Castries, you will be flying into George F. L. Charle. Castries George F. L. Charle (SLU) is just 0.7 mi from the center of the city. George F. L. Charle is the only Castries airport and it handles 0 inbound flights from London per day. 0 airlines have flights to Castries George F. L. Charle from London on a regular basis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London 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

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

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Castries flexibly with Cheapflights today.

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Of course! You can now track prices for flights from London to Castries and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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