Find flights
When to book
Airlines
FAQs

Cheap flights from London to Castries from £522

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SLU
9 Jul — 16 Jul1
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 9 June 2026.

Thu 3/910:45
LHR
-
SLU
1 stop13h 15m
Multiple Airlines
Thu 17/912:35
SLU
-
LHR
1 stop12h 15m
Multiple Airlines
Deal found 9/6£659
Wed 16/911:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Wed 30/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 6/6£717
Sun 26/711:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Mon 7/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 7/6£774
Sat 26/911:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Mon 5/1012:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 8/6£777
Fri 24/711:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Sun 6/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 6/6£800
Fri 24/711:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Sat 5/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 5/6£816
Sat 25/711:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Sun 6/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 6/6£844
Fri 31/711:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Sun 6/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 6/6£845
Mon 13/711:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Fri 4/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 8/6£845
Sat 10/1011:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Sat 17/1012:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 5/6£850
Fri 24/711:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Fri 31/712:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Deal found 9/6£854
Sat 21/1110:05
LGW
-
SLU
1 stop12h 55m
Multiple Airlines
Wed 2/1215:45
SLU
-
LGW
1 stop13h 20m
Multiple Airlines
Deal found 6/6£862

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 9 June 2026.

Round-trip from

£717

One-way from

£522

Good round-trip deal

£614 or less

Good one-way deal

£493 or less
16/9-30/9
  • 16/9-30/9
  • 2 total stops
  • 25h 30m total
  • London to Castries
Search Deals
7/10
  • 7/10
  • 3 total stops
  • 51h 50m total
  • London to Castries
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 9 June 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

LGW - SLU

LGWSLU

London Gatwick

Sat 21/11

10:05-19:00

1 stop12h 55m

Castries George F. L. Charle

Wed 2/12

15:45-09:05

1 stop13h 20m

£862

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Tue 1/12

10:05-19:00

1 stop12h 55m

Castries George F. L. Charle

Sun 20/12

15:45-09:05

1 stop13h 20m

£924
Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 7/7

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Mon 20/7

12:35-06:15

1 stop12h 40m

£925

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 1/8

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Mon 10/8

12:35-06:15

1 stop12h 40m

£955

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Sat 5/12

10:05-19:00

1 stop12h 55m

Castries George F. L. Charle

Wed 16/12

15:45-09:05

1 stop13h 20m

£961

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 16/7

10:45-19:00

1 stop13h 15m

Castries George F. L. Charle

Thu 23/7

09:10-05:50

1 stop15h 40m

£992

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 16/7

10:45-19:00

1 stop13h 15m

Castries George F. L. Charle

Wed 22/7

12:35-06:15

1 stop12h 40m

£1,010

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 24/9

16:50-14:35

3 stops26h 45m

Castries George F. L. Charle

Sun 4/10

18:55-10:00

3 stops34h 05m

£1,109

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 2/10

14:05-19:00

3 stops33h 55m

Castries George F. L. Charle

Fri 9/10

12:35-21:00

3 stops27h 25m

£1,173

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 21/7

09:35-19:00

1 stop14h 25m

Castries George F. L. Charle

Tue 4/8

12:35-09:20

1 stop15h 45m

£1,194

Flights are sorted by cheapest return flights first.

Deals found on 5/6

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3

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 9 June 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
8,031 reviews
Check prices

Comfort

6.8

Boarding

6.9

Entertainment

6.4

Crew

7.7

Overall

6.7

Food

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
8,031 reviews
British Airways
6.7
Okay
8,031 reviews
Check prices

Comfort

6.8

Boarding

6.9

Entertainment

6.4

Crew

7.7

Overall

6.7

Food

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights makes it easy to find London to Castries flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights helps you find that perfect flight to Castries from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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.

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

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.