Find cheap airlines flights from London to Castries

Choose from 1 carriers that fly from London to Castries, including British Airways, Enjoy the cheapest tickets on this route with British Airways.

Book direct flights from London to Castries: One way flights from $555, round trip flights from $755. Find flight deals for the next 3 months below.

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Info | London to Castries

The distance between London and Castries is about 6,792.26 km. It takes around 9 hours 5 minutes on average to fly from London to Castries. The most popular month to Castries is July. The off-season for travel is November.

Cheapest one-way flight price$395
Cheapest round-trip ticket price$755
Off-season for travelNovember
Peak season for travelJuly
Flight distance6,792.26 km
Average flight time9 hours 5 minutes
Popular airlineBritish Airways

When is the cheapest time to fly from London to Castries?

The cheapest time for London to Castries flights: Jan 18 to Jan 25 — one way flight prices from $384.

Cheapest flights
From price
Search
  • 916
  • 1623
  • 2330
  • Dec

    307
  • 714
  • 1421
  • 2128
  • Jan

    284
  • 411
  • 1118
  • 1825
  • Feb

    251
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • Which airlines offer direct flights from London to Castries?

    At the moment, you can catch a nonstop flight from London to Castries with the following airlines, including: British Airways Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 9 hours 5 minutes to fly from London (LON) to Castries (SLU).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Castries is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 5 flight per week flying from London to Castries. You can check the weekly schedule for popular airlines on this route below: British Airways: S/-/-/W/T/F/S -- BA2159 (11:31)
  • The cheapest months to fly from London to Castries is November, when demand for travel is lower.
  • After crunching the numbers on our November flight calendar, it's currently cheapest to fly from London to Castries on November 12, 2025 with British Airways, with prices starting at $691.
  • You can land at any one of the following hubs in Castries, with London Gatwick Airport to Hewanorra International Airport (LGW-UVF) is by far the most common option on this route: Hewanorra International Airport (UVF) George F. L. Charles Airport (SLU).
  • The time difference between Castries and London is 4h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.