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Cheap flights from London to Castries from £530

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.
LON — SLU
9 Jul — 16 Jul1
1 adult

Cheap 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 4 July 2025.

Round-trip from

£672

One-way from

£530

Popular in

December

Cheapest in

September

Average price

£577

Good round-trip deal

£585 or less

Good one-way deal

£449 or less
22/9-26/9
  • 22/9-26/9
  • 2 total stops
  • 27h 20m total
  • London to Castries
27/8
  • 27/8
  • 3 total stops
  • 30h 30m total
  • London to Castries
Highest demand for flights based on searches. 12% potential increase in price (£64 potential increase over avg. return price).
Cheapest flight prices on average. 6% potential price decrease (£26 potential savings vs. average return price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from London (LON) to Castries George F. L. Charle.
Price to beat on a one-way flight from London (LON) to Castries George F. L. Charle.

Find flight deals from London to Castries

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 4 July 2025.

Mon 22/908:05LHR - SLU
1 stop14h 25mMultiple Airlines
Fri 26/913:55SLU - LHR
1 stop12h 55mMultiple Airlines
Deal found 1/7£672
Thu 18/910:00LGW - SLU
2 stops30h 30mMultiple Airlines
Thu 20/1115:20SLU - LGW
3 stops34h 40mMultiple Airlines
Deal found 3/7£777

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 4 July 2025.
Use the filters below to find and compare flights from London to Castries that are best for you.

Fly from

London

Fly to

Castries

Route

Depart

Return

Price

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 22/9

08:05-17:30

1 stop14h 25m

Castries George F. L. Charle

Fri 26/9

13:55-07:50

1 stop12h 55m

£672

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Thu 18/9

10:00-11:30

2 stops30h 30m

Castries George F. L. Charle

Thu 20/11

15:20-06:00

3 stops34h 40m

£777

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Wed 27/8

13:05-14:35

3 stops30h 30m

£530

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 7/8

10:35-11:30

3 stops29h 55m

£629

Flights are sorted by cheapest return flights first.

Deals found on 2/7

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

How much does it cost for a return flight from London to Castries?

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. 1 airline has 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 London?

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

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Top airline flying from London to Castries

Discover the top airline that operate flights from London to Castries. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£418Average£592FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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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.

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