Cheap flights from Castries to London

George F. L. Charles
SLU
London
LON

Flight deals from Castries to London

Below you can see the best deals on flights Castries — London 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 11 September, from $479.

Top 10 cheap flights from Castries to London

AC
AC
Z0
$ 479

Castries — London

15:10—06:20
11 Sep 2026
34 h 10 m
2 stops
AC
AC
Z0
$ 479

Castries — London

15:10—06:20
11 Sep 2026
34 h 10 m
2 stops
AC
AC
Z0
$ 479

Castries — London

15:10—06:20
11 Sep 2026
34 h 10 m
2 stops
WS
TS
$ 520

Castries — London

14:30—10:45
13 Sep 2026
15 h 15 m
1 stop
WS
TS
$ 520

Castries — London

14:30—07:55
13 Sep 2026
36 h 25 m
1 stop
AC
AC
TS
$ 535

Castries — London

15:10—09:50
11 Sep 2026
37 h 40 m
2 stops
B6
Z0
$ 539

Castries — London

16:39—06:20
11 Sep 2026
32 h 41 m
1 stop
B6
Z0
$ 540

Castries — London

16:39—06:20
10 Sep 2026
56 h 41 m
1 stop
DL
DL
DL
DL
$ 550

Castries — London

15:32—20:10
9 Sep 2026
23 h 38 m
3 stops
DL
DL
UA
UA
$ 550

Castries — London

15:32—20:40
9 Sep 2026
24 h 8 m
3 stops

Prices were found in the last 72 hours and may change — check the exact price when you continue.

When is the best time to book a flight from Castries to London?

The price of a flight from Castries to London changes depending on how far ahead you book. For the best chance of a lower fare, book around 8 days before departure, when the average ticket costs about $565. Fares also tend to climb as the departure date gets closer.

About the Castries — London flight

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

The route has direct flights — around 5 flights per week, flights are operated by British Airways, a nonstop flight takes about 8 h 20 min, the distance between the cities is around 6,794 km.

Planning your trip? You may find our London travel guide, how to get from the airport into town and London 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 $479Min. price
SeptemberCheapest
DecemberPeak season
YesDirect flights
6,794 kmDistance
8 h 20 minTravel time
1Airlines
5 / wkFlights

Flight schedule from Castries to London

The table shows direct flights from Castries to London on the selected date. The flight takes approximately 8 h 20 min. Regular flights are operated by British Airways. Departures from Hewanorra Airport and George F. L. Charles Airport airports, arrivals at Heathrow Airport, London Gatwick Airport and Stansted 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: 15 Aug 2026

Flight ticket prices by day: Castries — London

Below is a calendar of the lowest flight ticket prices for Castries — London by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $479 in September, and the most expensive are around $800 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 Castries to London by month. Tickets are usually cheapest in October (around $744) and priciest in December (about $1,152) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$888mediumMay$936mediumSep$792low
Feb$864mediumJun$1,080highOct$744low
Mar$1,056highJul$1,128highNov$768low
Apr$912mediumAug$1,104highDec$1,152high

Some values are estimated based on seasonality.

When to fly

Weather in London: it is warmest in July (up to 22 °C on average) and coolest in January (around 7 °C). The driest month is June.

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

Temperature · London

Dry and wet days · London

Wind speed and direction · London

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

  • Book ahead: fares for Castries — London 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.
  • Castries is served by more than one airport — compare fares and travel time to each before you book.
  • Flights Castries — London operate on Mondays, Fridays and Saturdays — keep that in mind when picking your travel dates.
  • The cheapest month to fly to London is usually September — 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 Castries — London route are operated by 1 airline; British Airways runs the most flights (around 100% of all flights). Compare carriers, flight shares and schedules below.

  • British AirwaysBA
    2x/week
    WebsiteFleet: 29243M pax/year
    • Direct flight UVF → LGW2x/week
      Duration
      8h 24m
      Days
      MTWTFSS
    100.0%Open →

Cities and airports on the Castries — London route

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

Departure

Castries

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

London

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

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Frequently asked questions about the Castries — London flight

How long is the flight from Castries to London?

A nonstop Castries — London flight takes about 8 h 20 min — the distance between the cities is around 6,794 km.

How far is it from Castries to London?

The distance from Castries to London is about 6,794 km, which a nonstop flight covers in around 8 h 20 min.

Are there direct flights from Castries to London?

Yes, there are nonstop flights Castries — London — around 5 flights per week.

Which airlines fly from Castries to London?

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

Which airports do Castries — London flights use?

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

How much is a ticket from Castries to London?

The price of a Castries — London ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in December. Tickets typically cost between $479 and $800. Check the current lowest fare and low-price calendar on this page.

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

Flights Castries — London 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 September. Compare prices by month in the price trend chart on this page.

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

To catch a low fare Castries — London, 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 September.

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.

Where else you can fly from Castries

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Where else you can fly from London

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