Find flights
Deals
When to book
FAQs & Tips
Airlines

Find cheap flights from London Heathrow Airport to Saint Lucia from £346

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 20/9. 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
0 bags
Fri 31/5
Fri 7/6

Search hundreds of travel sites at once for deals on flights to Saint Lucia

In the last 7 days, travellers have searched 43,740,974 times on KAYAK, and here's why:

Save 28% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Best Saint Lucia Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours

Castries
Castries1 stop£774

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

Low season

June

High season

December

Cheapest flight

£346
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (17% 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 to Saint Lucia from London Heathrow Airport 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 to Saint Lucia with an airline and back to London Heathrow Airport 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 to Saint Lucia from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from London Heathrow Airport to Saint Lucia

  • Morning departure is around 5% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 3 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.
7.7
FinnairOverall score based on 1379 reviews
7.8Boarding
7.6Comfort
7.0Entertainment
6.9Food
8.2Crew
Airline reviews

All good- I love BA and the professionalism of the crew and pilots.

8.0 ExcellentAnonymous, Apr 2024JFK - LHR
Read more about Finnair reviews

All good- I love BA and the professionalism of the crew and pilots.

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

It was listed on my ticket as Finnair but there was no indication that the flight was Finnair. In fact the number was even different. There were no employees there until exactly 2 hours before so we had to wait in line at Iberia and hope

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

The flight was Finnair but there was no indications anywhere that the checkin was for Finnair also. There was no one to ask. I think at a minimum they should list the code shares so people don’t stand in the wrong line for an hour.

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Flight ok, but me and other two passengers didn’t have connection with the entertainment in our seats. So, no movies, no games, no music… for 9 hours. The crew just told us that there’s nothing they can do but I noticed during the flight that there were empty seats, so they could have offered to us to change seats. Customer service could be better.

Had a nice flight to London on BA will fly with them again in the future

Finnair cancelled my flight 12 hours prior to leaving for Helsinki. They stated there were mechanical problems. I had to scurry around to find a new flight that would meet my needs for arrival in Helsinki. Luckily I was able to find alternate transportation through Lufthansa/United.

Helpful steward. Allowed me to move to some empty seats and I was able to get some sleep. He also had milk for my tea. Americans don’t realise that cream or half and half ruin tea.

Cabin crew on our flight showed lack of any customer service gruff and acting annoyed if you asked anything and I mean anything Example a man on the seat over dropped his beer on my husbands blanket We asked if we could switch out blankets cabin crew Said. No we don’t have any extras OK well can you take the wet one Cabin crew looked disgusted and annoyed Took it no OK or yes just a growl

My ticket was for Premium Economy and all the seats were taken, I was placed in Economy class and I’m looking for a refund.

Unfortunately delayed 2 hrs due to faulty tyre.. which had to be changed, but better safe than sorry.

Hi vergin Atlantic service was good but the flight ticket agent travel up charge me extra 57 pounds as a airport charges, actually I refuse to pay but they say if I not pay £57 then they say you will not be able to travel from Heathrow to goa ,so for me there was no option and it was just 3 day before my departure so i paid, so please look in to the matter. And I have a receipt of £ 57 as well .thanks

Staff didn’t check cabin well for landing seemed more interested in chatting to each other. Food was poor and differed from pre order.

We were in the last group to be called to the flight - which was 30 minutes late taking off. While we were lucky enough to have been given bulkhead seats (due to a medical condition I’d told them about beforehand) the seats weren’t particularly comfortable. A crying baby for the whole trip made things worse, so the crew managed very well with coping. The final thing I’d say was that there wasn’t enough food served during the flight.

Very good. Glad we had Premium for the flight out.

We flew Upper Class from London to The Turks and Caicos. Check in was amazing. Our ldriver too us directly to a special entrance to terminal 3. It took 10 minutes to check in and clear customs. Amazing! The VA lounge is large and comfortable. Boarding the flight was easy and without a wait. The crew was excellent. But the seats were awful, strange and uncomfortable. Having a comfortable flat bed seat is the reason we pays 1000s extra. The VA 787 uses a reverse herringbone configuration. Look it up. You have your back to the window and are facing the aisle with no privacy. Turning the seat into a bed requires assistance from the crew so not very spontaneous. . The food was ok. A bit tasteless and meager portions. Had to pay for WiFi. I believe VA has other configuration on their dream airbus flights. Lots of stuff about all this on YouTube where you can see what I have been describing. I can not recommend taking VA on a long flight with these seats.

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff for a fantastic friendly nice we came round and check we need anything else to eat or drink

From the start everything was perfectly fine. First meeting was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast.

The flight was on time and the crew very professional. Everything went as expected and I will use BA again for this trip.

We paid to have overhead carry-on baggage. When we got to the gate we were told that our carry on bags would need to be checked and go below because the flight was full. Notably we were nowhere near the last people to board and about 30 other passengers also had to check their carry-on bags. Other than that the flight was fine.

Very bad plain although I paid A business class ticket I was stuck in a stiff fixed seat without any entertainment or Wi Fi for 5 hours I will never ever book a flight on British airline.

Self check in Kiosk did not recognize that I had prepaid for my luggage. This caused a 40 minute delay even though I had my British Airways email receipt for the prepaid luggage.

Crew were very friendly and helpful. They explained to us in detail the delay in our takeoff due to the storm that rolled in from Belfast and did their best to make up the time. Always great to fly BA!

Staff were very helpful. The free WiFi for messages was also very useful to keep in touch

Crew was more interested on looking at their phones than welcoming passengers during boarding.

The crew was very attentive and kept busy serving a variety of treats!

Terrible. Missed my flight to final destination because of delayed British Airways flight. Had to spend 12 hours in airport and $1500 for new plane tickets

The crew on board were all very pleasant and happy to help. The flight had the old business class seats. The departure board in the business lounge did not update and kept on saying ' gate open' but never said boarding. When I got nervous about the departure time and walked to the gate I was told off rudely for being late.

Book cheap flights from London to Saint Lucia

Cheapest flights to Saint Lucia from London found in 2024

Recent return flight deals

19/6Wed
1 stopJetBlue
20h 06mLHR-UVF
25/6Tue
1 stopJetBlue
16h 14mUVF-LHR
£578
4/9Wed
2 stopsDelta
25h 30mLHR-UVF
3/10Thu
1 stopDelta
16h 35mUVF-LHR
£703
4/9Wed
2 stopsDelta
27h 00mLHR-UVF
3/10Thu
1 stopDelta
16h 35mUVF-LHR
£704
12/9Thu
1 stop
30h 55mLHR-SLU
26/9Thu
1 stop
15h 55mSLU-LHR
£774
14/6Fri
1 stop
12h 45mLHR-SLU
18/6Tue
1 stop
14h 40mSLU-LHR
£860
23/7Tue
1 stopAir Canada
31h 25mLHR-UVF
31/7Wed
1 stopAir Canada
34h 05mUVF-LHR
£893
23/7Tue
1 stopAir Canada
25h 30mLHR-UVF
31/7Wed
2 stopsAir Canada
34h 00mUVF-LHR
£943
1/8Thu
2 stopsFinnair
46h 00mLHR-UVF
3/8Sat
2 stopsFinnair
34h 07mUVF-LHR
£976
18/5Sat
1 stopFinnair
28h 30mLHR-UVF
10/6Mon
1 stopFinnair
15h 30mUVF-LHR
£1,020
15/5Wed
directVirgin Atlantic
9h 15mLHR-UVF
29/5Wed
1 stopVirgin Atlantic
35h 03mUVF-LHR
£2,550

Search by stops

Search by airline

Search by price

Recent one-way flight deals

20/9Fri
2 stops
45h 48mLHR-UVF
£346
29/8Thu
1 stop
30h 55mLHR-SLU
£526
17/9Tue
1 stop
12h 45mLHR-SLU
£554
17/9Tue
2 stopsAir Canada
31h 25mLHR-UVF
£619
17/9Tue
1 stopAir Canada
35h 00mLHR-UVF
£621
3/6Mon
1 stopKLM
27h 32mLHR-UVF
£710
14/9Sat
1 stopKLM
27h 25mLHR-UVF
£734
26/8Mon
2 stopsDelta
29h 25mLHR-UVF
£1,316
3/6Mon
2 stopsDelta
27h 07mLHR-UVF
£1,317
18/7Thu
2 stopsAmerican Airlines
27h 12mLHR-UVF
£1,445

Search by stops

Search by airline

Search by price

Last minute flights from Heathrow to Saint Lucia

Last minute flight, train and bus deals

5/5Sun
directVirgin Atlantic
9h 15mLHR-UVF
12/5Sun
directVirgin Atlantic
8h 50mUVF-LHR
£580
3/5Fri
direct
9h 15mLHR-UVF
16/5Thu
multi-stop
16h 28mUVF-LHR
£642
6/5Mon
multi-stopDelta
30h 32mLHR-UVF
13/1Mon
multi-stopDelta
16h 40mUVF-LHR
£704
3/5Fri
multi-stopDelta
25h 37mLHR-UVF
16/5Thu
multi-stopDelta
16h 28mUVF-LHR
£711
5/5Sun
directKLM
9h 15mLHR-UVF
12/5Sun
multi-stopKLM
35h 18mUVF-LHR
£870
5/5Sun
directKLM
9h 15mLHR-UVF
12/5Sun
multi-stopKLM
16h 28mUVF-LHR
£881
6/5Mon
multi-stopFinnair
26h 15mLHR-UVF
11/5Sat
multi-stopFinnair
34h 05mUVF-LHR
£999
6/5Mon
multi-stopFinnair
50h 30mLHR-UVF
11/5Sat
multi-stopFinnair
34h 05mUVF-LHR
£1,004
5/5Sun
multi-stopAmerican Airlines
23h 50mLHR-UVF
12/5Sun
multi-stopAmerican Airlines
33h 35mUVF-LHR
£1,048
5/5Sun
multi-stopAmerican Airlines
26h 45mLHR-UVF
12/5Sun
multi-stopAmerican Airlines
33h 35mUVF-LHR
£1,050

Search by stops

Search by airline

Search by price

London Heathrow Airport - Saint Lucia Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

Saint Lucia - London Heathrow Airport

Cabin classes:

£2,022
£1,828
£497