£485+ Cheap Flights from London Heathrow Airport to Saint Lucia | Cheapflights

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Cheap flight deals from Heathrow to Saint Lucia

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Cheapest flights from Heathrow to Saint Lucia
Explore the most affordable flight options available from Heathrow to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 June 2026.

Thu 17/910:45

LHR

-

SLU

1 stop13h 15m

Multiple Airlines

Thu 24/912:35

SLU

-

LHR

1 stop12h 15m

Multiple Airlines

Deal found 18/6£615

Thu 3/910:45

LHR

-

SLU

1 stop13h 15m

Multiple Airlines

Thu 17/912:35

SLU

-

LHR

1 stop12h 15m

Multiple Airlines

Deal found 17/6£669

Mon 9/1113:20

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Mon 16/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 20/6£673

Wed 9/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 30/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 17/6£679

Fri 4/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 9/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 17/6£682

Sat 26/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sat 3/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 16/6£685

Sat 14/1112:05

LHR

-

UVF

2 stops56h 20m

Air Canada

Thu 26/1117:25

UVF

-

LHR

1 stop33h 05m

Air Canada

Deal found 15/6£690

Thu 12/1118:00

LHR

-

UVF

1 stop26h 25m

Air Canada

Thu 26/1117:25

UVF

-

LHR

1 stop35h 05m

Air Canada

Deal found 18/6£694

Sun 15/1113:00

LHR

-

UVF

2 stops31h 25m

Air Canada

Sun 22/1117:25

UVF

-

LHR

2 stops33h 05m

Air Canada

Deal found 19/6£696

Sun 4/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 11/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 19/6£710

Thu 1/1017:40

LHR

-

UVF

1 stop25h 35m

Air Canada

Sun 1/1117:25

UVF

-

LHR

1 stop35h 05m

Air Canada

Deal found 20/6£711

Tue 25/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 25/1015:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 20/6£713

Best flights from Heathrow to Saint Lucia
Discover carefully curated flight deals from Heathrow to Saint Lucia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 June 2026.

Thu 3/910:45

LHR

-

SLU

1 stop13h 15m

Multiple Airlines

Thu 17/912:35

SLU

-

LHR

1 stop12h 15m

Multiple Airlines

Deal found 17/6£669

Thu 12/1113:25

LHR

-

UVF

2 stops31h 00m

Air Canada

Sun 15/1117:25

UVF

-

LHR

1 stop35h 05m

Air Canada

Deal found 19/6£722

Thu 29/1010:45

LHR

-

UVF

1 stop31h 41m

Delta

Mon 9/1116:25

UVF

-

LHR

2 stops35h 40m

Delta

Deal found 18/6£746

Wed 9/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 30/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 17/6£679

Fri 21/815:15

LHR

-

UVF

1 stop27h 59m

Delta

Fri 11/915:32

UVF

-

LHR

1 stop16h 43m

Delta

Deal found 15/6£747

Tue 25/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 25/1015:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 20/6£713

Wed 19/815:15

LHR

-

UVF

1 stop27h 59m

Delta

Wed 9/915:32

UVF

-

LHR

1 stop16h 43m

Delta

Deal found 15/6£747

Thu 20/815:15

LHR

-

UVF

1 stop27h 59m

Delta

Thu 10/915:32

UVF

-

LHR

1 stop14h 48m

Delta

Deal found 15/6£747

Sun 4/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 11/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 16/6£748

Tue 27/1013:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Thu 5/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 17/6£751

Tue 27/1013:00

LHR

-

UVF

2 stops29h 26m

Delta

Thu 5/1116:41

UVF

-

LHR

2 stops23h 19m

Delta

Deal found 17/6£753

Wed 30/909:20

LHR

-

UVF

1 stop33h 48m

Delta

Wed 7/1015:41

UVF

-

LHR

1 stop16h 34m

Delta

Deal found 20/6£773

Fri 3/711:10

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Thu 9/712:35

SLU

-

LHR

1 stop12h 15m

Multiple Airlines

Deal found 19/6£851

Wed 9/909:20

LHR

-

UVF

1 stop33h 52m

Delta

Wed 30/915:33

UVF

-

LHR

1 stop16h 42m

Delta

Deal found 17/6£783

Fri 17/711:10

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Mon 20/712:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 18/6£967

Fri 13/1113:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Sun 29/1112:35

SLU

-

LHR

1 stop13h 15m

Multiple Airlines

Deal found 20/6£978

Fri 17/711:10

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Fri 24/713:35

SLU

-

LHR

1 stop11h 40m

Multiple Airlines

Deal found 17/6£1,039

Tue 4/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Tue 18/812:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 19/6£1,053

Thu 17/920:05

LHR

-

SLU

2 stops23h 30m

Multiple Airlines

Thu 24/917:50

SLU

-

LHR

2 stops21h 20m

Multiple Airlines

Deal found 18/6£1,072

Mon 9/1112:15

LHR

-

SLU

3 stops23h 55m

Multiple Airlines

Mon 16/1119:40

SLU

-

LHR

3 stops35h 10m

Multiple Airlines

Deal found 20/6£1,134

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£615
One-way from	£485

17/9-24/9

17/9-24/9
2 total stops
25h 30m total
London to Saint Lucia

9/11

9/11
2 total stops
30h 35m total
London to Saint Lucia

Cheapflights 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

Cheapest return flight

Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 3/9

10:45-19:00

1 stop13h 15m

Castries George F. L. Charle

Thu 17/9

12:35-05:50

1 stop12h 15m

£669

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 9/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Wed 30/9

12:35-06:15

1 stop12h 40m

£679

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 25/8

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sun 25/10

15:45-08:30

1 stop12h 45m

£713

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 12/11

13:25-16:25

2 stops31h 00m

Castries Hewanorra

Sun 15/11

17:25-08:30

1 stop35h 05m

£722

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 29/10

10:45-14:26

1 stop31h 41m

Castries Hewanorra

Mon 9/11

16:25-08:05

2 stops35h 40m

£746

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Fri 21/8

15:15-14:14

1 stop27h 59m

Castries Hewanorra

Fri 11/9

15:32-13:15

1 stop16h 43m

£747

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 19/8

15:15-14:14

1 stop27h 59m

Castries Hewanorra

Wed 9/9

15:32-13:15

1 stop16h 43m

£747

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 20/8

15:15-14:14

1 stop27h 59m

Castries Hewanorra

Thu 10/9

15:32-11:20

1 stop14h 48m

£747

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sun 4/10

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sun 11/10

12:35-06:15

1 stop12h 40m

£748

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 27/10

13:25-12:05

1 stop26h 40m

Castries George F. L. Charle

Thu 5/11

15:45-08:30

1 stop12h 45m

£751

Flights are sorted by cheapest return flights first.

Deals found on 16/6

Showing 1-10 of 42 resultsSorted by cheapest first

1

2

3

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5

Best time to book a flight from Heathrow to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Heathrow with our price prediction graph.

LHR-UVF

LHR-SLU

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Saint Lucia

LHR-LC0

LHR-UVF

LHR-SLU

What is the cheapest month to book a flight from London Heathrow Airport to Saint Lucia?

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Saint Lucia (average of £501). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £808). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Saint Lucia

Read reviews from past customers who have flown with KLM,Finnair, andAir Canada from London Heathrow Airport to Saint Lucia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

7.8

Good

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

7.6

Good

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

7.1

Good

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

7.1

Good

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

British Airways

6.7

Okay

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

How long is the flight from London Heathrow Airport to Saint Lucia?
Air Canada and Delta can get you from London Heathrow Airport to Saint Lucia in just under 31h. Your travel time can differ by up to 41m. The distance between London Heathrow Airport and Saint Lucia is about 4217 mi. Both multi-stop and direct flights can be found to your destination and back.
Can I find deals for flights from Heathrow to Saint Lucia that include hotel bookings?
Yes. In addition to deals on Heathrow to Saint Lucia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Saint Lucia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Saint Lucia.
Can I find deals for business class flights from Heathrow to Saint Lucia?
Yes. Cheapflights offers flight deals from Heathrow to Saint Lucia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to Saint Lucia?
Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Saint Lucia (average of £501). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £808). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 6 airlines flying from Heathrow to Saint Lucia

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£509	Average£808	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
JetBlue	Cheapest£542	Average£849	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Air Canada	Cheapest£646	Average£790	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Finnair	Cheapest£703	Average£924	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
American Airlines	Cheapest£719	Average£977	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
KLM	Cheapest£1,177	Average£1,619	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Saint Lucia?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Saint Lucia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Saint Lucia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Saint Lucia for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Heathrow to Saint Lucia with no change fees?

Yes! Cheapflights helps users easily find flights from Heathrow to Saint Lucia with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Saint Lucia become cheaper?

Yes! Start tracking prices for Heathrow to Saint Lucia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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