£402 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 10/2. 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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Flight Deals

Book Cheap Heathrow 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 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

Mon, 2 Mar - Wed, 25 Mar
JetBlue Logo
08:05 - 16:01
LHR
-
UVF
35h 56m
1 stop
JetBlue Logo
15:49 - 21:40
UVF
-
LHR
25h 51m
1 stop
£624JetBlue
Wed, 4 Mar - Tue, 10 Mar
JetBlue Logo
12:20 - 16:01
LHR
-
UVF
31h 41m
1 stop
JetBlue Logo
16:23 - 21:40
UVF
-
LHR
25h 17m
1 stop
£632JetBlue
Mon, 2 Mar - Wed, 25 Mar
Air Canada Logo
13:45 - 16:25
LHR
-
UVF
54h 40m
2 stops
Air Canada Logo
16:20 - 11:20
UVF
-
LHR
15h 00m
1 stop
£634Air Canada
Mon, 2 Mar - Wed, 25 Mar
Air Canada Logo
13:45 - 16:25
LHR
-
UVF
54h 40m
2 stops
Air Canada Logo
16:20 - 07:10
UVF
-
LHR
34h 50m
2 stops
£636Air Canada
Tue, 31 Mar - Mon, 6 Apr
Air Canada Logo
08:30 - 15:20
LHR
-
UVF
35h 50m
1 stop
Air Canada Logo
16:15 - 08:35
UVF
-
LHR
35h 20m
1 stop
£660Air Canada
Tue, 31 Mar - Mon, 6 Apr
Air Canada Logo
14:10 - 15:20
LHR
-
UVF
30h 10m
1 stop
Air Canada Logo
16:15 - 21:00
UVF
-
LHR
23h 45m
2 stops
£663Air Canada
Wed, 25 Mar - Mon, 30 Mar
Air Canada Logo
18:00 - 15:25
LHR
-
UVF
25h 25m
1 stop
Air Canada Logo
16:20 - 08:35
UVF
-
LHR
35h 15m
1 stop
£670Air Canada
Wed, 25 Mar - Mon, 30 Mar
Air Canada Logo
18:00 - 15:25
LHR
-
UVF
25h 25m
1 stop
Air Canada Logo
16:20 - 21:00
UVF
-
LHR
23h 40m
2 stops
£671Air Canada
Sun, 29 Mar - Thu, 9 Apr
Air Canada Logo
17:40 - 15:25
LHR
-
UVF
26h 45m
1 stop
Air Canada Logo
16:15 - 11:50
UVF
-
LHR
14h 35m
1 stop
£672Air Canada
Mon, 11 May - Thu, 14 May
Multiple Airlines Logo
09:20 - 18:25
LHR
-
SLU
14h 05m
1 stop
Multiple Airlines Logo
15:45 - 09:20
SLU
-
LHR
12h 35m
1 stop
£685Multiple Airlines
Booking Insights

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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Saint Lucia from London Heathrow Airport found in the last 72 hours was to Castries, at £594 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 £594.

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 £777, prices are generally cheapest when you fly direct.

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

Low seasonJune
Cheapest flight£402
Best time to beat the crowds but there is an average 86% increase in price.
Most popular time to fly (47% 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.

Reviews of the top 5 airlines flying 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.
7.7
KLMOverall score based on 1443 reviews
7.8Boarding
7.3Food
8.4Crew
7.1Entertainment
7.6Comfort
Airline reviews

Flight was on time, staff are friendly and helpful onboard.

8.0 ExcellentShereen, Dec 2025
AMS - YUL
Read more KLM reviews

Flight was on time, staff are friendly and helpful onboard.

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

Very good seat, very comfortable, good food, and good service.

It was a good flight, very comfortable seats for sleeping in business class. Probably the most comfortable business class seat I've ever had (20+ times in business class on various airlines). Service was good, but the only downside is my screen didn't work and it had to be reset multiple times to get it to shut off. I had to block my eyes because the screen was white almost the entire flight and I wore an eye mask when I slept. But when eating and reading in my seat, my eyes hurt because the only way to turn the screen off was reset it and the screen would only be off for a few minutes at a time.

Everything was wonderful! AirBus seats are more comfortable to sleep in as compared to the Boeing planes.

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

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.

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

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.

For my third flight in a row on AC 737 Max 8, it was stuffy and warm, especially mid-cabin, Business Class and rear cabin were better. Very uncomfortable 5 hour flight. Do all 737 Max 8 maybe have an HVAC software problem as well or just Air Canada?

It was good, seating was a little tight apart from that all was well.

I liked the flight but the check in was horrendous. I have booked with you before but not ever had to pay extra for luggage, it was not clear on booking, I didn't know there was different categories of economy that meant different allowances. So was alarmed when we had to pay a further £120 at the check-in at a point of not changing.

I wish they gave the earphones earlier rather than when we are already in flight.

Ditto to what i said earlier. I thought my earlier response included this flight too!

Very nice staff members are very nice and friendly helpful

We went for a family funeral. Unfortunately Air Canada will not give a bereavement discount for flights that have already occurred. We couldn't get the death certificate before our flights.

We were a little late pushing back ,but arrived a head of time.

W ended up getting stuck in Edinburgh Scotland during the air strike. They cancelled our flight and No help to get us rebooked. All said down that cost us over $2,000 extra at least to get home. Hopefully we will be reimbursed somehow! Won’t be flying Air Canada again

The 787 Dreamliner that we flew on was relatively new and a nice aircraft. We flew on a 777 which was noticeably older and the seats were average” but the 787 was very nice, especially for the price. No window blinds anymore, instead high tech adjustable polychromatic glass!! Nice.

I was unable to board this flight because of visa changes that I was not alerted about and I’ve been unable to contact Kayak to obtain a refund / credit anything.

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Late. And service was very slow - passengers sat for well over an hour with dirty trays etc surrounding them

Entertainment devices on A380 need to be fixed, the seats might do with updates.

I like everything about British Airways. Excellence. Perfect. Exquisite service.

The plane was dirty the food was awful and the boarding process took too long

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

Information on your arrival and departure airports