£534 Find Cheap Flights from London Heathrow Airport to Saint Lucia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Saint Lucia departing on 15/9. 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

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Best Saint Lucia Flight Deals from Heathrow

Cheapest return prices found by our users on KAYAK in the last 72 hours
Castries
Castries1 stop£625
Castries
Castries1 stop£625

Cheap Flights from Heathrow to Saint Lucia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Saint Lucia 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 Heathrow to Saint Lucia

Wed, 3 Dec - Wed, 17 Dec
Air Canada Logo
19:25 - 16:00LHR-UVF
48h 35m2 stops
Air Canada Logo
17:05 - 06:30UVF-LHR
33h 25m1 stop
£534Air Canada
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Wed, 3 Dec - Wed, 17 Dec
Air Canada Logo
19:25 - 16:00LHR-UVF
48h 35m2 stops
Air Canada Logo
17:05 - 11:20UVF-LHR
14h 15m1 stop
£560Air Canada
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Mon, 10 Nov - Mon, 24 Nov
Air Canada Logo
18:00 - 16:00LHR-UVF
26h 00m1 stop
Air Canada Logo
17:05 - 11:20UVF-LHR
14h 15m1 stop
£561Air Canada
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Thu, 4 Sep - Thu, 11 Sep
 Logo
08:05 - 14:35LHR-SLU
11h 30m1 stop
 Logo
15:20 - 07:50SLU-LHR
11h 30m1 stop
Mon, 10 Nov - Mon, 24 Nov
Icelandair Logo
08:25 - 15:34LHR-UVF
35h 09m2 stops
Icelandair Logo
16:54 - 20:45UVF-LHR
23h 51m1 stop
£628Icelandair
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Mon, 8 Sep - Mon, 22 Sep
Icelandair Logo
08:25 - 13:45LHR-UVF
34h 20m2 stops
Icelandair Logo
15:06 - 20:45UVF-LHR
24h 39m1 stop
£637Icelandair
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Thu, 11 Sep - Thu, 18 Sep
 Logo
08:05 - 14:35LHR-SLU
11h 30m1 stop
 Logo
15:20 - 07:50SLU-LHR
11h 30m1 stop
Sun, 27 Jul - Sun, 3 Aug
British Airways Logo
17:00 - 14:00LHR-UVF
26h 00m2 stops
British Airways Logo
15:20 - 06:20UVF-LHR
34h 00m2 stops
£925British Airways
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Wed, 2 Jul - Wed, 16 Jul
Finnair Logo
19:05 - 13:45LHR-UVF
23h 40m2 stops
Finnair Logo
15:00 - 10:35UVF-LHR
14h 35m1 stop
£949Finnair
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Wed, 2 Jul - Wed, 9 Jul
Finnair Logo
09:45 - 13:45LHR-UVF
33h 00m2 stops
Finnair Logo
15:00 - 10:35UVF-LHR
14h 35m1 stop
£952Finnair
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KAYAK's insights & trends for Heathrow to Saint Lucia flights

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

What is the cheapest London Heathrow Airport to Saint Lucia flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from London Heathrow Airport to Saint Lucia.

The cheapest ticket to Saint Lucia from London Heathrow Airport found in the last 72 hours was to Castries, at £603 return. The most popular route is from London Heathrow Airport (LHR) to Castries (UVF), and the cheapest round-trip airline ticket found on this route in the last 72 hours was £603.

Can I save money by flying with a stopover from London Heathrow Airport to Saint Lucia?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £789, prices are generally cheapest when you fly direct.


Good to know - Cheap tickets from London Heathrow Airport to Saint Lucia

Low seasonMay
High seasonDecember
Cheapest flight£400
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly (28% more expensive on average)
Flight from London Heathrow Airport to Castries

FAQs - booking Saint Lucia flights

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Saint Lucia?

    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 from London Heathrow Airport to Saint Lucia.

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

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

  • What is the Hacker Fare option on flights from London Heathrow Airport to Saint Lucia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London Heathrow Airport to Saint Lucia 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 from London Heathrow Airport to Saint Lucia?

    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 from London Heathrow Airport to Saint Lucia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Saint Lucia?

    The cheapest time of day to fly to Saint Lucia is generally in the morning, when retur flights cost £812 on average. The most expensive time of day to fly to Saint Lucia is generally in the morning, which is peak travel time and where the average cost of a ticket is £812.

Top 5 airlines serving from Heathrow to Saint Lucia

 
Need help choosing which airline to fly with from Heathrow to Saint Lucia? 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.
7.8
KLMOverall score based on 1358 reviews
7.8Boarding
7.2Food
8.4Crew
7.7Comfort
7.1Entertainment
Airline reviews

The service was great. However the lounge only gets passing grade

10.0 ExcellentMostafa, May 2025YYC - AMS
Read more KLM reviews

The service was great. However the lounge only gets passing grade

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

Any flight that lands safely is a good flight. However our leg from Helsinki was delayed 1 hour with no explanation. The delay would not allow us to make our connection to Cincinnati. I was informed by American Airlines that our Cincinnati flight was rescheduled for the following day. I immediately made a non refundable hotel reservation in Dallas. Upon exiting the plane at Dallas I was given a hotel voucher. Nice, but I can't get a refund on the hotel I booked. A little communication would have been helpful. Food on Finnair is below quality of Korean Air.

The cabin crew really looked like they wanted to be somewhere else. They weren't really interested in providing an attentive service to full fare paying passengers at all. However the Captiain's in flight announcements were relaxed and very entertaining.

Crew were professional and responsive. Food was mediocre and breakfast could do with revampinmg

Food was very ordinary for premium economy, very small portions.

i dont know WHY they call it business class. the seats are NOT significantly wider than economy seats, they just do not let the middle seats be beepked to give the illusion of more space between passengers. the seats do NOT recline any more than economy seats either. the only real difference is the full meal served to business (vs none for economy). I would rather have a wider, lie flat ACTUAL business class seat with no food for a 3 hr flight. this was pretty disappointing to say the least.

There wore nice leather like sits, in my opinion seats lay out bit tight . Crew was great they did averything possible to make averywone comfortable as possible, food was, think worst I ever head on flight, head chicken and yellow rice. Ice cream was a nic treat.

Our previous flight was delayed but they waited for us to board.

Super friendly and helpful staff, from check-in desk to cabin crew.

Following a paid seat upgrade for enhanced comfort, I encountered an unacceptable odor in my assigned area. It took three hours for the crew to relocate me, and the replacement seat was unacceptably close to the lavatory, offering no improvement.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

I did not fly by vergin atlantic from bangalore to vasco da gama

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

We had an unfortunate experience where we had to leave the aircraft after boarding, shortly before the scheduled takeoff time, and re-board. The reason given was that a passenger felt ill and had to cancel their plans and therefor their luggage had to be found and removed.

We’ve used VA before many times the experience is always been good they have lovely staff and the food is always delicious.

Everything about the flight was amazing from check in to boarding entertainment was okay food we didn’t try.

Service Director cut all cabin lights and window screens defaulted to dark, but it was an afternoon flight going west. I spent hours trying to see what was reading as reading lights weren't working either. What the hell.

an absolute disaster and nightmare on air condition. IT WAS FREEZING!! everyone around us had hats, hoodies, gloves outdoor jackets on. that segment of the aircraft had a fault I assume...no amount of suggestion to turn down the air con helped. otherwise all good.

Everything was very good, short delay Toronto to Regina on my return to Canada but not a big deal. Thanks Kayak, Dr. Ian Stewart

Very good AC Rouge flight YYZ-TPA. Great crew, all went smoothly. Thank you!

Boarded smoothly, took off on time. Entertainment screens were reliable and the movie library is abundant. Food better than wtst was served on the first leg of the journey by another airline.

Check in was incredibly fast, fukuoka was comfortable and crew very pleasant. The only negative was that the boarding was somewhat chaotic, but it so often is these days as airlines tend to board by how much you pay and not by what an orderly process of filling the plane would be.

It was ok. Even after the airport bus took us to the terminal , we did not expect to walk 35 mins inside the airport to the gate . A 15 min walk is ok . Especially if there was any delay in TSA check which happens to is too then people can easily miss the flight.

I was not even asked if I want some water. Joke. Steward gave me a biscuit cover in chocolate and did not even look at me.

Excellent bit seats are still a little too small and there's that $75 baggage charge.

Very disappointed with how we left Heathrow, and the service from Air Canada. When food was given, I was skipped by the attendant, and when I went to tell him, he just dropped the tray of food on my table. Leaving Heathrow and landing in Montreal were bad, which is not Air Canada’s fault, but the service itself was not good.

I didn’t have food and they don’t include entertainment. Not much leg room at all. Staff were great.

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

Business class was nothing more than Economy with middle seat empty. Uncomfortable seat and leg room. A mom behind me had a 18 month/2 yr old on her lap, who had his feet on my back all the time- while middle seat remained empty. Pretty much not worth the fare. Very disappointed.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

charging port did not work, no entertainment system. Other than that the flight was good and safe.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

When Stephen arrived with our wheel chairs - we were in excellent hands! He was such great help with getting our rental car and then reporting our missing luggage. When you are exhausted from traveling for too many hours, he was just what we needed to navigate everything! Give that guy a raise!

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

Gate information deliberately delayed to only one hour B4 flight, lack of info finding gate.

Everything you need to know for your flight from Heathrow to Saint Lucia

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