What is the cheapest airline that flies from London Heathrow to Saint Lucia?

Air Canada, WestJet, and JetBlue are the most popular carriers operating from London Heathrow to Saint Lucia

Which airlines fly to Saint Lucia?

British Airways, Virgin Atlantic and Finnair are the top three most popular airlines that fly to Saint Lucia from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 37% of people opting to fly with this airline when travelling to Saint Lucia. Keep in mind that there are 5 different airlines that fly to Saint Lucia on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from London Heathrow Airport to Saint Lucia?

Prices for flights from London Heathrow Airport to Saint Lucia are refreshed on a daily basis.

How many operators does momondo search for flights from London Heathrow Airport to Saint Lucia?

The number of operators available for flights from London Heathrow Airport to Saint Lucia is 5 as of August 2025.

How old do you have to be to fly from London Heathrow Airport to Saint Lucia?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Saint Lucia.

What documentation or ID do you need to fly to Saint Lucia?

The travel and health documents you'll need for your trip to Saint Lucia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint Lucia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£407 Cheap Flights from London Heathrow Airport to Saint Lucia in 2025

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Find the cheapest flights from London Heathrow Airport to Saint Lucia

Round-trip

One-way

Last minute

Cheap return flights

08:15 - 14:15LHR-UVF

35h 00m1 stop

15:20 - 20:45UVF-LHR

24h 25m1 stop

£584Icelandair

Find Deal

dom, 21 set - mer, 1 ott

08:15 - 14:15LHR-UVF

35h 00m1 stop

15:20 - 20:45UVF-LHR

24h 25m1 stop

£607JetBlue

Find Deal

gio, 11 set - dom, 21 set

13:00 - 16:25LHR-UVF

31h 25m1 stop

17:15 - 06:30UVF-LHR

33h 15m1 stop

£658Air Canada

Find Deal

mar, 13 gen - lun, 9 feb

12:05 - 14:15LHR-UVF

31h 10m1 stop

17:15 - 11:20UVF-LHR

14h 05m1 stop

£679Air Canada

Find Deal

lun, 20 ott - lun, 3 nov

20:05 - 14:15LHR-UVF

47h 10m2 stops

16:15 - 11:20UVF-LHR

15h 05m1 stop

£685

Find Deal

mer, 22 ott - dom, 26 ott

11:25 - 19:00LHR-SLU

12h 35m1 stop

12:35 - 06:20SLU-LHR

12h 45m1 stop

£707

Find Deal

dom, 21 set - mer, 1 ott

16:50 - 15:10LHR-UVF

50h 20m2 stops

16:35 - 09:00UVF-LHR

36h 25m1 stop

£708Delta

Find Deal

dom, 16 nov - mer, 19 nov

15:50 - 15:10LHR-UVF

27h 20m1 stop

16:35 - 07:50UVF-LHR

35h 15m1 stop

£709Delta

Find Deal

dom, 16 nov - mer, 19 nov

19:05 - 13:40LHR-UVF

22h 35m2 stops

16:50 - 06:45UVF-LHR

33h 55m2 stops

£712American Airlines

Find Deal

dom, 26 ott - mar, 4 nov

13:40 - 14:17LHR-UVF

29h 37m1 stop

15:17 - 10:35UVF-LHR

14h 18m1 stop

£713American Airlines

Find Deal

ven, 26 set - ven, 3 ott

American Airlines flights from London Heathrow Airport to Saint Lucia

Our best American Airlines deals on London Heathrow Airport to Saint Lucia flight tickets

American Airlines

26 Oct

LHR19:05London Heathrow

22h 35m

2 stops

UVF13:40Castries Hewanorra

4 Nov

UVF16:50Castries Hewanorra

33h 55m

2 stops

LHR06:45London Heathrow

£712

Find similar

American Airlines

26 Sept

LHR13:40London Heathrow

29h 37m

1 stop

UVF14:17Castries Hewanorra

3 Oct

UVF15:17Castries Hewanorra

14h 18m

1 stop

LHR10:35London Heathrow

£713

Find similar

American Airlines

31 Jan

LHR09:45London Heathrow

32h 45m

1 stop

UVF14:30Castries Hewanorra

7 Feb

UVF16:50Castries Hewanorra

15h 15m

1 stop

LHR12:05London Heathrow

£714

Find similar

Icelandair flights from London Heathrow Airport to Saint Lucia

Our best Icelandair deals on London Heathrow Airport to Saint Lucia flight tickets

Icelandair

21 Sept

LHR08:15London Heathrow

35h 00m

1 stop

UVF14:15Castries Hewanorra

1 Oct

UVF15:20Castries Hewanorra

24h 25m

1 stop

LHR20:45London Heathrow

£584

Find similar

Icelandair

26 Sept

LHR08:25London Heathrow

58h 50m

2 stops

UVF14:15Castries Hewanorra

3 Oct

UVF15:20Castries Hewanorra

24h 25m

1 stop

LHR20:45London Heathrow

£618

Find similar

Icelandair

11 Sept

LHR08:15London Heathrow

35h 00m

1 stop

UVF14:15Castries Hewanorra

25 Sept

UVF15:20Castries Hewanorra

24h 25m

1 stop

LHR20:45London Heathrow

£626

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

dom 21/9

08:15-14:15

1 stop35h 00m

Castries Hewanorra

mer 1/10

15:20-20:45

1 stop24h 25m

£584

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

gio 11/9

08:15-14:15

1 stop35h 00m

Castries Hewanorra

dom 21/9

15:20-20:45

1 stop24h 25m

£607

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

mar 13/1

13:00-16:25

1 stop31h 25m

Castries Hewanorra

lun 9/2

17:15-06:30

1 stop33h 15m

£658

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

lun 20/10

12:05-14:15

1 stop31h 10m

Castries Hewanorra

lun 3/11

17:15-11:20

1 stop14h 05m

£679

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

mer 22/10

20:05-14:15

2 stops47h 10m

Castries Hewanorra

dom 26/10

16:15-11:20

1 stop15h 05m

£685

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

dom 21/9

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

mer 1/10

12:35-06:20

1 stop12h 45m

£707

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

dom 16/11

16:50-15:10

2 stops50h 20m

Castries Hewanorra

mer 19/11

16:35-09:00

1 stop36h 25m

£708

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

dom 16/11

15:50-15:10

1 stop27h 20m

Castries Hewanorra

mer 19/11

16:35-07:50

1 stop35h 15m

£709

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

dom 26/10

19:05-13:40

2 stops22h 35m

Castries Hewanorra

mar 4/11

16:50-06:45

2 stops33h 55m

£712

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

ven 26/9

13:40-14:17

1 stop29h 37m

Castries Hewanorra

ven 3/10

15:17-10:35

1 stop14h 18m

£713

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport to Saint Lucia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Saint Lucia?

The cheapest day to depart on your flight to Saint Lucia is on a Tuesday when prices can be found for as low as £510. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £666.

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

Fly from London Heathrow to Castries Hewanorra for the best London Heathrow - Saint Lucia flight prices

What cabin class options are available on London Heathrow to Saint Lucia flights?

There are 1 cabin classes available to choose from on London Heathrow to Saint Lucia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London Heathrow Airport to Saint Lucia flights?

You could potentially save up to 10% on your flight if you consider stops on a London Heathrow Airport to Saint Lucia flight.

Cheap London Heathrow Airport to Saint Lucia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Saint Lucia

Direct flights	None

There are no direct flights from London Heathrow Airport to Saint Lucia. There are no popular flight routes from London Heathrow Airport to Saint Lucia.

Search flight deals

When did momondo last update prices for flights from London Heathrow Airport to Saint Lucia?
Prices for flights from London Heathrow Airport to Saint Lucia are refreshed on a daily basis.
How many operators does momondo search for flights from London Heathrow Airport to Saint Lucia?
The number of operators available for flights from London Heathrow Airport to Saint Lucia is 5 as of August 2025.
How old do you have to be to fly from London Heathrow Airport to Saint Lucia?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Saint Lucia.
What documentation or ID do you need to fly to Saint Lucia?
The travel and health documents you'll need for your trip to Saint Lucia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint Lucia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to Saint Lucia?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to Saint Lucia is Airbus A350-1000, representing 23.08% of all bookings. The subsequent popular models are Boeing 767-400 at 23.08%, Boeing 787-9 Dreamliner at 15.38%, and Airbus A330-300 at 15.38%.

Best airlines flying from London Heathrow Airport to Saint Lucia

Compare and see reviews for airlines that fly from London Heathrow Airport to Saint Lucia with momondo

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom £416	Free Cancellation	Rating 7.4 658 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £424	Free Cancellation	Rating 6.7 7,291 reviews	Search British Airways flights
Air Canada	PriceFrom £516	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
Finnair	PriceFrom £640	Free Cancellation	Rating 7.6 1,320 reviews	Search Finnair flights
KLM	PriceFrom £679	Free Cancellation	Rating 7.8 1,388 reviews	Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Saint Lucia?

Finding the right flight to Saint Lucia from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Saint Lucia quick and easy, saving you time and money.

Can I find flights from London to Saint Lucia with flexible booking policies on momondo?

All flight searches from London to Saint Lucia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London to Saint Lucia?

momondo helps you find the best flight between London and Saint Lucia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Saint Lucia right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Saint Lucia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Saint Lucia and let you know when they change.

An easier way to manage your Saint Lucia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Popular Cities in Saint Lucia

Flights to Castriesfrom £614

Cheap flights from London Heathrow Airport to Saint Lucia from £407

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Big names, great deals

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Find the cheapest flights from London Heathrow Airport to Saint Lucia

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

American Airlines flights from London Heathrow Airport to Saint Lucia

Our best American Airlines deals on London Heathrow Airport to Saint Lucia flight tickets

Icelandair flights from London Heathrow Airport to Saint Lucia

Our best Icelandair deals on London Heathrow Airport to Saint Lucia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Saint Lucia that are best for you.

See travel insights to Saint Lucia from

How to get the cheapest flight ticket from London Heathrow Airport to Saint Lucia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Saint Lucia?

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

Fly from London Heathrow to Castries Hewanorra for the best London Heathrow - Saint Lucia flight prices

What cabin class options are available on London Heathrow to Saint Lucia flights?

There are 1 cabin classes available to choose from on London Heathrow to Saint Lucia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London Heathrow Airport to Saint Lucia flights?

You could potentially save up to 10% on your flight if you consider stops on a London Heathrow Airport to Saint Lucia flight.

What is the cheapest airline that flies from London Heathrow to Saint Lucia?

Air Canada, WestJet, and JetBlue are the most popular carriers operating from London Heathrow to Saint Lucia

Which airlines fly to Saint Lucia?

Cheap London Heathrow Airport to Saint Lucia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Saint Lucia

Direct flights

When did momondo last update prices for flights from London Heathrow Airport to Saint Lucia?

How many operators does momondo search for flights from London Heathrow Airport to Saint Lucia?

How old do you have to be to fly from London Heathrow Airport to Saint Lucia?

What documentation or ID do you need to fly to Saint Lucia?

What is the most popular plane model from London Heathrow Airport to Saint Lucia?

Best airlines flying from London Heathrow Airport to Saint Lucia

Compare and see reviews for airlines that fly from London Heathrow Airport to Saint Lucia with momondo

Why use momondo?

Why should I use momondo to find a flight deal from London to Saint Lucia?

Can I find flights from London to Saint Lucia with flexible booking policies on momondo?

How can momondo help me find flights from London to Saint Lucia?

I’m not ready to book a flight from London to Saint Lucia right now. Can momondo alert me if prices change?

An easier way to manage your Saint Lucia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Saint Lucia

Popular Cities in Saint Lucia

Popular flights according to clicks in the last 7 days on momondo