£308 Find Cheap Flights from Saint Lucia to London – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Saint Lucia to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Saint Lucia to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Saint Lucia to London

Fri, 18 Dec - Tue, 29 Dec
British Airways Logo
20:05 - 08:20UVF  Castries Hewanorra-LGW London Gatwick
8h 15mdirect
British Airways Logo
12:30 - 17:35LGW  London Gatwick-UVF Castries Hewanorra
9h 05mdirect
£711British Airways
Fri, 18 Dec - Thu, 28 Jan
British Airways Logo
20:05 - 08:20UVF  Castries Hewanorra-LGW London Gatwick
8h 15mdirect
British Airways Logo
12:30 - 17:35LGW  London Gatwick-UVF Castries Hewanorra
9h 05mdirect
£711British Airways
Wed, 25 Nov - Mon, 30 Nov
British Airways Logo
19:20 - 07:35UVF  Castries Hewanorra-LGW London Gatwick
8h 15mdirect
British Airways Logo
12:15 - 17:20LGW  London Gatwick-UVF Castries Hewanorra
9h 05mdirect
£734British Airways
Wed, 9 Sep - Wed, 16 Sep
JetBlue Logo
16:39 - 20:45UVF  Castries Hewanorra-LHR London Heathrow
23h 06m1 stop New York John F Kennedy Intl
JetBlue Logo
11:55 - 15:34LHR  London Heathrow-UVF Castries Hewanorra
32h 39m1 stop New York John F Kennedy Intl
£734JetBlue
Fri, 25 Sep - Sat, 3 Oct
British Airways Logo
20:45 - 10:10UVF  Castries Hewanorra-LGW London Gatwick
8h 25mdirect
British Airways Logo
11:15 - 15:05LGW  London Gatwick-UVF Castries Hewanorra
8h 50mdirect
£745British Airways
Fri, 25 Sep - Sat, 3 Oct
British Airways Logo
20:45 - 10:10UVF  Castries Hewanorra-LGW London Gatwick
8h 25mdirect
British Airways Logo
11:15 - 15:05LGW  London Gatwick-UVF Castries Hewanorra
8h 50mdirect
£746British Airways
Sat, 3 Oct - Sat, 10 Oct
British Airways Logo
20:30 - 09:50UVF  Castries Hewanorra-LGW London Gatwick
8h 20mdirect
British Airways Logo
11:15 - 15:05LGW  London Gatwick-UVF Castries Hewanorra
8h 50mdirect
£746British Airways
Fri, 25 Sep - Sat, 3 Oct
British Airways Logo
20:45 - 10:10UVF  Castries Hewanorra-LGW London Gatwick
8h 25mdirect
British Airways Logo
11:15 - 15:05LGW  London Gatwick-UVF Castries Hewanorra
8h 50mdirect
£746British Airways
Sat, 26 Sep - Sat, 3 Oct
British Airways Logo
20:25 - 09:50UVF  Castries Hewanorra-LGW London Gatwick
8h 25mdirect
British Airways Logo
11:15 - 15:05LGW  London Gatwick-UVF Castries Hewanorra
8h 50mdirect
£746British Airways
Wed, 9 Sep - Sat, 12 Sep
JetBlue Logo
16:39 - 20:45UVF  Castries Hewanorra-LHR London Heathrow
23h 06m1 stop New York John F Kennedy Intl
JetBlue Logo
08:15 - 15:34LHR  London Heathrow-UVF Castries Hewanorra
36h 19m1 stop New York John F Kennedy Intl
£767JetBlue
Booking Insights

KAYAK's insights & trends for flights to London

Get data-powered insights and trends into flights to London to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to London?

The average price of all round-trip flights to London clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to London is Wednesday where round-trip tickets can be as cheap as £737. On the other hand, the most expensive day to fly is Monday, where round-trip prices are £921 on average.

What is the cheapest month to fly to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to London, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to London is September, where tickets cost £748 on average for return flights. On the other hand, the most expensive months are August and April, where the average cost of tickets from Saint Lucia is £1,129 and £1,095 respectively. For one-way flights, the best month to travel is August with an average price of £482.

Which is the cheapest airport to fly into in London?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in London is London Stansted Airport (STN), with an average flight price of £84.

Find deals

Good to know - Cheap tickets from Saint Lucia to London

Low season

September

Cheapest flight

£308
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (48% more expensive on average)
Flight from Castries to London Gatwick Airport

FAQs - booking London flights

  • Which London airport is closest to central London?

    There are 6 major airports in London. The nearest airport from London city centre is London City (8 miles), followed by London Heathrow Airport (14 miles), London Gatwick Airport (24 miles), and London Luton Airport (28 miles).

  • How much is a flight to London?

    On average, a flight to London costs £865. The cheapest price found on KAYAK in the last 2 weeks cost £806 and departed from Castries Hewanorra Airport.

  • How does KAYAK find such low prices on flights to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to London are there each week?

    Each week there are around 2,009 direct flights from within Saint Lucia to London. The most common day for departures is Sunday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to London

  • Looking for a cheap flight from London to Saint Lucia? 25% of our users found flights on this route for £816 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

Reviews of the top airline flying from Saint Lucia to London

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Saint Lucia to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 8161 reviews
6.8Comfort
6.5Entertainment
6.4Food
7.0Boarding
7.7Crew
Airline reviews

Flight was fine. We were in business class, so lie-flat seats were appreciated. Kids were in premium and said it was nice. Flight was delayed by 3 hours, so we missed everything we had planned in London the first day.

8.0 ExcellentKarla, Aug 2026
Read more British Airways reviews

Flight was fine. We were in business class, so lie-flat seats were appreciated. Kids were in premium and said it was nice. Flight was delayed by 3 hours, so we missed everything we had planned in London the first day.

Gates were changed at Heathrow with nothing show on the board about 200 plus people needed to take a tram to another section of the terminal. At JFK airport, we had to wait 1 hour(!) on the tarmac after a 7 hour flight to get a gate to deboard!!

I am very disappointed with the way my seat reservation was handled. My husband and I purchased Business Class tickets and also paid extra to reserve our seats. However, our reserved seats were changed without our consent, and we were assigned different seats, separating us. Since we paid specifically for reserved seats, the airline did not provide the service we purchased. I would therefore like to request a full refund of the seat reservation fees. I would appreciate your prompt response and resolution to this matter. Thank you.

I can't believe you have to pay L 3.20 for a Cup of British tea on an airlines with the name British on the plane.

Long haul flight and was really good. Comfortable plane and seats. Really great service all round and always willing to help. Lovely food and drinks (Tanqueray is my favourite Gin). Media was great and helped for the long journey.

Flight was good but couldn’t sleep because bed was so uncomfortable.

This was the return leg of my trip. Tried to do online check in several times, both on BA App and online but it kept saying " it was not possible, check in at the airport". Got to Airport 3 hours before the flight to be told the flight was overbooked and I was on standby because I hadn't checked in online!!! Was told I could go and wait at the gate in case of a no show but would actually be booked on the next flight in 4 hours. At the gate I did actually get in to the original plane... And had 2 empty seats next to me.. So much for overbooked. To add insult to injury, my baggage did not arrive in LHR and was finally delivered over 24 hours later. I don't travel with BA very often.. This experience will make it even less likely, particularly as my wife had exactly the same issue 2 days later.

I couldn't check in over two days online, had to phone to secure a seat and at the airport they put me on standby, at the gate I had to push to get my seat allocated back to me! No catering, a small bottle of water and a biscuit. Yet business had a full meal and drinks service. Very poor.

Spent unnecessary hours on phone calls to resolve small error on one of the passengers name... It was extremely stressful and time consuming... Not great... Also all 4 members of the family: 2 parents/ 2 teenagers were allocated separate seats (even separate floors... Not great...

Absolutely the best airline for service and comfort by far! I only wish I could fly with them domestically!

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Hounslow
Luton
Southend-on-Sea
Winchester
Slough
Stansted
Folkestone
Croydon
Newport
Chichester
Colchester
Maidstone
Crawley
Chelmsford
Bedford
Hastings
Richmond

Everything you need to know for your flight to London

Cabin class types available on flights to London

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to London
Business Class flights to London
Premium Economy Class flights to Londonfrom £1,770
Economy class flights to Londonfrom £806