£349 Find Cheap Flights from London 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 London to Saint Lucia departing on 5/9. 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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Cheap Flights from London to Saint Lucia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Castries
Castries1 stop£711
Castries
Castries1 stop£711

Book Cheap London to Saint Lucia Plane Tickets

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

Sun, 23 Nov - Sun, 26 Apr
British Airways Logo
10:05 - 15:10LGW-UVF
9h 05mdirect
British Airways Logo
20:25 - 09:45UVF-LGW
8h 20mdirect
£504British Airways
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Sun, 14 Sep - Sun, 21 Sep
British Airways Logo
11:15 - 15:00LGW-UVF
8h 45mdirect
British Airways Logo
20:25 - 09:45UVF-LGW
8h 20mdirect
£509British Airways
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Mon, 13 Oct - Mon, 20 Oct
Icelandair Logo
12:10 - 13:45LGW-UVF
30h 35m2 stops
Icelandair Logo
15:05 - 09:35UVF-LGW
37h 30m2 stops
£629Icelandair
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Wed, 27 Aug - Wed, 10 Sep
Icelandair Logo
08:25 - 16:11LHR-UVF
36h 46m2 stops
Icelandair Logo
15:20 - 20:45UVF-LHR
24h 25m1 stop
£646Icelandair
Find Deal
Wed, 21 Jan - Wed, 28 Jan
Air Canada Logo
19:25 - 16:25LHR-UVF
49h 00m2 stops
Air Canada Logo
17:15 - 11:20UVF-LHR
14h 05m1 stop
£654Air Canada
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Mon, 20 Oct - Mon, 3 Nov
Air Canada Logo
12:05 - 14:15LHR-UVF
31h 10m1 stop
Air Canada Logo
17:15 - 06:30UVF-LHR
33h 15m1 stop
£679Air Canada
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Sat, 13 Sep - Sat, 20 Sep
Finnair Logo
10:40 - 14:17LGW-UVF
32h 37m2 stops
Finnair Logo
15:17 - 10:40UVF-LGW
38h 23m2 stops
£756Finnair
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Sun, 14 Sep - Sun, 21 Sep
Finnair Logo
14:30 - 14:17LGW-UVF
28h 47m2 stops
Finnair Logo
15:17 - 08:10UVF-LGW
35h 53m2 stops
£789Finnair
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Tue, 14 Oct - Tue, 21 Oct
KLM Logo
07:45 - 14:26LCY-UVF
35h 41m2 stops
KLM Logo
15:41 - 17:20UVF-LCY
20h 39m2 stops
£1,252KLM
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Sat, 13 Sep - Sat, 20 Sep
KLM Logo
08:40 - 14:23LCY-UVF
34h 43m2 stops
KLM Logo
15:33 - 08:10UVF-LCY
35h 37m2 stops
£1,477KLM
Find Deal
Booking Insights

KAYAK's insights & trends for London to Saint Lucia flights

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

What is the cheapest London 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 to Saint Lucia.

The cheapest ticket to Saint Lucia from London found in the last 72 hours was to Castries, at £517 return. The most popular route is from London Gatwick Airport (LGW) to Castries (UVF), and the cheapest round-trip airline ticket found on this route in the last 72 hours was £517.

Can I save money by flying with a stopover from London 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 £1,645, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from London to Saint Lucia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Saint Lucia, 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 from London to Saint Lucia is September, when tickets cost £487 (return) on average. On the other hand, the most expensive months are December and August, when the average cost of return tickets is £938 and £789 respectively.


Good to know - Cheap tickets from London to Saint Lucia

Low seasonJune
Cheapest flight£349
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.
Flight from London Gatwick Airport to Castries

FAQs - booking Saint Lucia flights

  • How does KAYAK find such low prices on flights from London 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 to Saint Lucia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London 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 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 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 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 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.

Reviews of the top 5 airlines flying from London to Saint Lucia

 
Need help choosing which airline to fly with from London 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.
7.6
FinnairOverall score based on 1316 reviews
8.1Crew
7.6Boarding
6.9Entertainment
7.5Comfort
6.7Food
Airline reviews

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

8.0 ExcellentSandrine, Jul 2025JFK - DCA
Read more Finnair reviews

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Crew very lovely. Arrived an hour late due to bad weather. We were given new tickets to an other flight but it could have been organised better, so we did not have to run through the whole airport to.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

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.

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

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,

Boarded with no problems. Sat on the tarmac for an hour before taking off. We were the last ones on our connecting flight. Didn't think we were going to make it. Our flight to Iceland was similarly delayed. When we've flown other airlines, pilots have tried to make up time while in the air. This doesn't seem to be something that Icelandair does. We made all of our flights, but it was stressful and we didn't think it was going to happen based on the time we arrived.

The flight was delayed and as a consequence we missed our connecting flight. Were stuck for another 6h in Reykyavik. Appreciated that we got a generous food voucher at least. Would have liked to see more information upon arrival including a person waiting for connecting flight travellers and informing already that we will not catch the flight and directing us to the office dealing with the matter; unfortunately that didnt happen and we hence first needed to find out whether flight had indeed left already and then locate the adequate office to help us with booking us on the next connecting flight. Also my suitcase broke and it is not clear whether it is happened on the leg with Iceland Air from DC to Reykyavik or on the leg with Lufthansa from Reykyavik to Frankfurt. Finally, understood that it is a low cost company but at least provision of earplugs for free would have been nice, instead of making them buy.

Great experience on Icelandair flight from Newark to Amsterdam by way of Reykjavík. Courteous and professional staff. Food was solid. Service - outstanding. Cabin was a little warm.

Good service. No complementary food for international flight. WiFi kinda pricey. Got the job done for the right price.

The plane was very small and the aisle was so narrow that every time someone walked by they rubbed against me, so it was very uncomfortable.

Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.

For a four hour flight, I was disappointed that everything was for purchase except for coffee, tea, or water. The disembarking in Iceland was so inefficient and time-consuming. We landed and stopped in the middle of the tarmac, had to disembark in the rain, and then squeeze into a bus which took us to the airport. Crazy! How does that work in winter?

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Everything about the flight check-in was smooth no line the plane is clean and bathroom

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

All good. Loo’s weren’t great and as clean as i would like.

A great flight. The crew was excellent too. Of particular note of excellence was the gluten-free meal which was one of the best offerings I’ve ever had on a plane. Outstanding work, BA chefs.

I was put into business class. Wow! My flight attendant was great! The food amazing’

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

I got stuffed on both flights into terrible seats. Second flight the seat didn’t even recline and fit s tall person, that’s very uncomfortable.

I arrived at Bridgetown only to fins that a suitcase was missing. It was left at Manchester. I had to wait wait 2 days before deciding on going to collect from the airport personally. I am not happy about paying for baggage at the airport. This I thought was included in the price of the ticket. Who goes away for 2 weeks and does not bring luggage. This was a total rip off and I am not happy. I need someone to contact me before returning so that I don't have to pay all over again to return homde.

Boarding market okay just because of the delay we had, but not related to the crew in any way…

The 737-8 is too small for the length of flight especially if there are any delays

The flight was delayed over 2 hours, we should off left the plane2 late passengers as it’s not fair on everyone who’s followed the rules.

Dreamliner. Yes great if maintained. I didn't see anyones screen work consistently during either of our flights. Worse was their ability to not only dump you out of premium but separate couples and seat someone's carer at the opposite end of the aircraft. This poor gentleman had no hand so his partner who assists him, being seated at the other end of the aircraft, well that really showed us all what Tui think :( It was fairly dire all in all, they advertise all the perks of the dreamliner only in reality you don't have the features and they change the windows and colours to suit their constant sales pitches. Ironically they were so low on stock for the return flight that all their sales pitches were a waste of time! Their contract only favours them and 'operational changes' well they cover every excuse and Tui use it. Surprisingly we haven't reinstalled the Tui app or booked with them since. It's a shame as I rated them highly during the pandemic.

One flight attendant not wearing a mask over nose, 50% of passengers not either, and no effort to correct. Boarding was very late with no information - lots of standing around waiting.

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

Cabin class types available on flights to Saint Lucia

Cabin classes available on flights to Saint Lucia. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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