Cheap flights from London to Castries

London
LON
George F. L. Charles
SLU

Flight deals from London to Castries

Below you can see the best deals on flights London — Castries for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 24 August, from $551.

Top 10 cheap flights from London to Castries

About the London — Castries flight

Looking for cheap flights from London to Castries? Compare fares from different airlines, check the flight schedule and travel time — and book your London — Castries ticket online at the best price.

The route has direct flights — around 9 flights per week, flights are operated by British Airways, Qatar Airways, a nonstop flight takes about 8 h 50 min, the distance between the cities is around 6,794 km.

Planning your trip? You may find our Castries travel guide, how to get from the airport into town and Castries weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $527Min. price
FebruaryCheapest
DecemberPeak season
YesDirect flights
6,794 kmDistance
8 h 50 minTravel time
2Airlines
9 / wkFlights

Flight schedule from London to Castries

The table shows direct flights from London to Castries on the selected date. The flight takes approximately 8 h 50 min. Regular flights are operated by British Airways and Qatar Airways. Departures from Heathrow Airport, London Gatwick Airport and Stansted Airport airports, arrivals at Hewanorra Airport and George F. L. Charles Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 24 Aug 2026

Flight ticket prices by day: London — Castries

Below is a calendar of the lowest flight ticket prices for London — Castries by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $527 in February, and the most expensive are around $757 in December. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from London to Castries by month. Tickets are usually cheapest in October (around $689) and priciest in January (about $943) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$943highMay$750lowSep$701low
Feb$919highJun$725lowOct$689low
Mar$895highJul$822mediumNov$786medium
Apr$846mediumAug$834mediumDec$931high

Some values are estimated based on seasonality.

When to fly

Weather in Castries: it is warmest in September (up to 29 °C on average) and coolest in January (around 27 °C). The driest month is March.

Tickets are usually cheapest in February and most expensive in December. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Castries

Dry and wet days · Castries

Wind speed and direction · Castries

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How to get the best deal on a London — Castries ticket

  • Book ahead: fares for London — Castries are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • London is served by more than one airport — compare fares and travel time to each before you book.
  • Flights London — Castries operate on Sundays, Mondays and Tuesdays — keep that in mind when picking your travel dates.
  • The cheapest month to fly to Castries is usually February — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the London — Castries route are operated by 2 airlines; British Airways runs the most flights (around 89% of all flights). Compare carriers, flight shares and schedules below.

  • British AirwaysBA
    3x/week
    WebsiteFleet: 29243M pax/year
    • Direct flight LGW → UVF3x/week
      Duration
      8h 45m
      Days
      MTWTFSS
    88.9%Open →
  • Qatar AirwaysQR
    1x/week
    WebsiteFleet: 26640M pax/year
    • Direct flight LGW → UVF1x/week
    11.1%Open →

Cities and airports on the London — Castries route

Flights London — Castries depart from Heathrow Airport, London Gatwick Airport, Stansted Airport and London Luton Airport and arrive at Hewanorra Airport and George F. L. Charles Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

London

LON
United Kingdom
About the cityHow to get thereWeatherAll about the country United Kingdom
Arrival

Castries

SLU
Saint Lucia
About the cityHow to get thereWeatherAll about the country Saint Lucia
Departure airports
Arrival airports

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Frequently asked questions about the London — Castries flight

How long is the flight from London to Castries?

A nonstop London — Castries flight takes about 8 h 50 min — the distance between the cities is around 6,794 km.

How far is it from London to Castries?

The distance from London to Castries is about 6,794 km, which a nonstop flight covers in around 8 h 50 min.

Are there direct flights from London to Castries?

Yes, there are nonstop flights London — Castries — around 9 flights per week.

Which airlines fly from London to Castries?

Airlines operating London — Castries include British Airways, Qatar Airways. See the full list with schedules in the "Airlines" section on this page.

Which airports do London — Castries flights use?

Flights from London depart from Heathrow Airport, London Gatwick Airport, Stansted Airport, and arrive at Hewanorra Airport, George F. L. Charles Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from London to Castries?

The price of a London — Castries ticket depends on your travel date, season and demand: it is usually cheapest to fly in February, and most expensive in December. Tickets typically cost between $527 and $757. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights London — Castries?

Flights London — Castries are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is February. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from London to Castries?

To catch a low fare London — Castries, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually February.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

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