Cheap Flights from Castries to London

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Flight deals from Castries to London

Looking for a cheap last-minute deal or the best return flight from Castries to London? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Castries to London

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Castries to London flights are currently cheapest in March.

Direct flights from Castries to London

Castries to London: Flight information

The things to know before you go.
Cheapest flight foundر.ق.‏ 1,551
Cheapest month to flyMarch
Average flight time8 hrs, 18 mins
Most popular airlineQatar Airways
Average flights per week56

Finding cheap flights from Castries to London: Frequently asked questions

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.
The best price we found for a return flight from Castries to London is ر.ق.‏ 3,257. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
8 hours and 18 minutes is the average flight time from Castries to London.
Qatar Airways and British Airways fly direct from Castries to London.
As of February 2026, there are 14 flights per week flying from Castries to London.
The cheapest month to fly from Castries to London is usually June.
If you're flying from Castries, the cheapest airport near London is London Stansted – which is 48.6 km away from the centre of London. We've found flights into this airport from ر.ق.‏ 3,257.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Castries to London on Sunday, 7 June 2026.
Yes – the average flight time is 8 hours and 18 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.
In February, the average temperature is usually around 4°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.
The cheapest airline that flies to London is WestJet. And the cheapest airline that flies to London Heathrow Airport is British Airways.

Flying from Castries to London: what you need to know

  • Begin planning your holiday by considering where you'll take off for your flight from Castries to London. George F. L. Charles Airport (SLU) and Hewanorra Airport (UVF) are Castries's main airports.

  • Touch down at London Heathrow Airport (LHR), London Gatwick Airport (LGW) or Stansted Airport (STN). You can also disembark at London Luton Airport (LTN) and London City Airport (LCY) in London.

  • The average length of a direct Castries to London flight is 8 hours 15 minutes.

  • London's timezone is UTC+0, making London four hours ahead of Castries.

  • Give yourself enough time to make your Castries to London flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • You can expect longer lines in popular months such as June. Arriving up to four hours ahead of international flights and two hours for a domestic departure will give you plenty of time for security and boarding.

How to find the cheapest flights from Castries to London

  • Booking early is often the key to locking in a cheap Castries to London flight. Prices tend to rise as demand increases, so the closer you get to departure, the more expensive your ticket may be.

  • If you can be flexible with your travel dates, try using the 'Whole month' search tool. It'll show you the cheapest price across each month when looking for your plane ticket from Castries to London.

  • Locking in a cheap flight from Castries to London is a piece of cake with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch when a better deal is available.

  • Find a cheap Castries to London flight with the help of our filters. Select your preferred duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

Flying from Castries

George F. L. Charles Airport (SLU)

  • Stopovers are the ideal opportunity to break up your journey — and maybe even explore a different city. When searching for Castries to London flights departing from George F. L. Charles Airport, uncheck the 'Direct flights only' box to see where you can visit along the way. Consider one of these popular options:

    • Piarco International Airport (POS)

    • Grantley Adams International Airport (BGI)

    • V.C. Bird International Airport (ANU)

  • The journey from central Castries to SLU takes about 40 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 2 kilometres in 5 minutes or so, depending on traffic conditions.

  • Have an early flight from Castries to London? Avoid the last-minute rush to the terminal (and sneak in some extra snooze time) by choosing one of these stays close to George F. L. Charles Airport:

  • When it comes to George F. L. Charles Airport's on-time performance, 74.74% of flights arrive within the expected time frame.

Hewanorra Airport (UVF)

  • Want a direct flight from Castries to London setting off from Hewanorra Airport (UVF)? Fasten your seatbelt and fly straight from UVF to London Heathrow Airport (LHR) and London Gatwick Airport (LGW).

  • From UVF, you can lock in a direct Castries to London plane ticket with British Airways.

  • Depending on traffic, you can drive to UVF from central Castries in about 1 hour 10 minutes. The airport is roughly 31 kilometres away.

  • It's your holiday, so why not book an extra night away? Think about kicking back in one of these hotels near Hewanorra Airport the day before your flight from Castries to London:

  • As far as flight punctuality goes, Hewanorra Airport has an on-time arrival rate of 75%.

Arriving in London

London Heathrow Airport (LHR)

  • The distance from London Heathrow Airport (LHR) to central London is approximately 23 kilometres. It takes around 55 minutes to get to the centre driving.

  • If you're taking public transport, expect a journey time of about 1 hour.

  • If you're arriving on a late flight from Castries to London, nothing beats the convenience of staying near the terminal. Grab your luggage from the carousel and then be showered and sleeping soon after at one of these hotels near LHR:

  • Grab a London Heathrow Airport rental car and discover London and beyond with your own set of wheels. Surprice, U-Save and Green Motion are popular providers to choose from here.

  • Reserving your ride from London Heathrow Airport about one week ahead can help you secure the lowest rate.

London Gatwick Airport (LGW)

  • London Gatwick Airport (LGW) is around 40 kilometres from central London. After your flight from Castries to London, it takes approximately 1 hour 20 minutes to reach the heart of the city in a ride-share or cab.

  • The journey will take about 30 minutes on public transport.

  • After your flight from Castries to London, tuck yourself in at a hotel close to LGW. These are some great accommodation options that'll help you get into relaxation mode:

  • The quickest way to get to where you're going is with a London Gatwick Airport rental car. Grab a set of wheels from Green Motion, U-Save or Drivalia and be off and running.

  • Lock in the lowest price by reserving your ride from LGW three weeks in advance. You'll also have access to a greater range of vehicles.

Stansted Airport (STN)

  • Hop off your flight from Castries to London and travel to your hotel or jump right into sightseeing. The centre of London is around 48 kilometres from Stansted Airport (STN) and takes roughly 1 hour to reach by car.

  • The journey takes around 1 hour 25 minutes if you use public transport.

  • If you don't want to make the trip to the centre, head for a hotel near STN. Settle in at one of these stays after your Castries to London flight:

  • Whether you'd like a compact for a solo trip or an SUV to move the whole family, you'll find the right Stansted Airport rental car for you. Check out the types of wheels available from suppliers such as Green Motion, Drivalia and Europcar.

  • Get ahead of the game and reap the rewards. Book your vehicle from STN four weeks before your flight from Castries to London for the most affordable rates.

Best time to go to London

  • February is the quietest month for flights from Castries to London, while July is the most popular. Choose the ideal time to go to London based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • The warmest month in London is July, with temperatures ranging between 11ºC and 26ºC. Lock in your Castries to London ticket then if you enjoy this type of weather.

  • January sees average temperatures of between 0ºC and 9ºC. Search for cheap flights from Castries to London around that time if you want to travel in cooler conditions.

More about London

Explore more of United Kingdom

  • London has its own special appeal, but there are so many other parts of United Kingdom just waiting to be explored. Around 161 kilometres north-west of London, a visit to Birmingham will keep your itinerary packed. Start with popular sights like Cadbury World, The Library of Birmingham and National Sea Life Centre.

  • If you're eager to discover another side of United Kingdom, head for Bristol, roughly 177 kilometres west of London. Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park are key highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.