£423+ Cheap Flights from London Heathrow Airport to Saint Lucia | Cheapflights

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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 28 July 2026.

Wed 23/908:15

LHR

-

UVF

1 stop36h 19m

JetBlue

Wed 30/916:39

UVF

-

LHR

1 stop23h 06m

JetBlue

Deal found 23/7£584

Wed 16/911:55

LHR

-

UVF

1 stop32h 39m

JetBlue

Wed 23/916:39

UVF

-

LHR

1 stop23h 06m

JetBlue

Deal found 26/7£627

Tue 15/911:55

LHR

-

UVF

1 stop32h 38m

JetBlue

Sun 20/916:39

UVF

-

LHR

1 stop23h 06m

JetBlue

Deal found 24/7£628

Fri 4/908:15

LHR

-

UVF

1 stop33h 36m

JetBlue

Mon 14/916:39

UVF

-

LHR

1 stop23h 06m

JetBlue

Deal found 26/7£632

Tue 8/908:15

LHR

-

UVF

1 stop36h 18m

JetBlue

Tue 15/916:39

UVF

-

LHR

1 stop23h 06m

JetBlue

Deal found 25/7£656

Mon 7/908:15

LHR

-

UVF

1 stop33h 15m

JetBlue

Wed 7/1016:39

UVF

-

LHR

1 stop23h 06m

JetBlue

Deal found 27/7£657

Wed 30/908:15

LHR

-

UVF

1 stop36h 19m

JetBlue

Wed 7/1016:39

UVF

-

LHR

1 stop23h 06m

JetBlue

Deal found 27/7£659

Wed 9/908:15

LHR

-

UVF

1 stop36h 19m

JetBlue

Fri 18/916:39

UVF

-

LHR

1 stop23h 06m

JetBlue

Deal found 25/7£676

Mon 16/1115:35

LHR

-

UVF

2 stops25h 57m

British Airways

Sun 22/1116:07

UVF

-

LHR

1 stop15h 33m

British Airways

Deal found 26/7£680

Thu 10/917:35

LHR

-

UVF

2 stops25h 27m

British Airways

Thu 17/915:02

UVF

-

LHR

2 stops23h 43m

British Airways

Deal found 27/7£681

Tue 15/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 20/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 24/7£692

Sun 13/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 20/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 26/7£693

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 28 July 2026.

Wed 9/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 16/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 26/7£718

Wed 9/912:50

LHR

-

UVF

2 stops30h 22m

Delta

Fri 18/915:32

UVF

-

LHR

2 stops23h 38m

Delta

Deal found 25/7£737

Thu 12/1116:40

LHR

-

UVF

2 stops24h 52m

American Airlines

Sat 21/1115:56

UVF

-

LHR

2 stops23h 04m

American Airlines

Deal found 26/7£832

Mon 16/1113:20

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Sun 22/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 26/7£724

Mon 17/816:20

LHR

-

UVF

2 stops26h 54m

Delta

Mon 7/915:34

UVF

-

LHR

1 stop16h 41m

Delta

Deal found 25/7£737

Sun 6/917:45

LHR

-

UVF

2 stops25h 29m

Delta

Sun 13/915:32

UVF

-

LHR

1 stop16h 43m

Delta

Deal found 23/7£739

Thu 21/113:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Thu 18/212:35

SLU

-

LHR

1 stop13h 15m

Multiple Airlines

Deal found 26/7£771

Wed 11/1109:50

LHR

-

UVF

2 stops33h 20m

Delta

Thu 19/1116:25

UVF

-

LHR

2 stops34h 50m

Delta

Deal found 25/7£755

Fri 18/1210:35

LHR

-

SLU

1 stop12h 25m

Multiple Airlines

Wed 30/1212:35

SLU

-

LHR

1 stop13h 15m

Multiple Airlines

Deal found 25/7£832

Thu 12/1108:40

LHR

-

UVF

2 stops34h 30m

Delta

Thu 19/1116:25

UVF

-

LHR

2 stops34h 50m

Delta

Deal found 25/7£762

Thu 12/1108:40

LHR

-

UVF

2 stops34h 30m

Delta

Wed 25/1116:25

UVF

-

LHR

2 stops35h 25m

Delta

Deal found 25/7£762

Sat 19/1213:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Wed 30/1212:35

SLU

-

LHR

1 stop13h 15m

Multiple Airlines

Deal found 24/7£872

Sat 24/1017:40

LHR

-

SLU

2 stops30h 20m

Multiple Airlines

Sun 1/1112:35

SLU

-

LHR

2 stops18h 45m

Multiple Airlines

Deal found 27/7£923

Fri 4/912:50

LHR

-

UVF

2 stops30h 24m

Delta

Mon 14/915:32

UVF

-

LHR

1 stop16h 43m

Delta

Deal found 26/7£893

Thu 12/1113:25

LHR

-

SLU

1 stop29h 50m

Multiple Airlines

Sat 21/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 26/7£970

Wed 11/1109:50

LHR

-

UVF

2 stops33h 20m

Delta

Fri 20/1116:25

UVF

-

LHR

1 stop35h 25m

Delta

Deal found 27/7£911

Wed 16/1210:35

LHR

-

SLU

1 stop12h 25m

Multiple Airlines

Fri 1/112:35

SLU

-

LHR

1 stop13h 15m

Multiple Airlines

Deal found 25/7£995

Sat 29/815:15

LHR

-

UVF

1 stop27h 59m

Delta

Sat 19/915:32

UVF

-

LHR

1 stop16h 43m

Delta

Deal found 26/7£928

Sat 19/1213:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Fri 1/115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 25/7£1,112

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£584
One-way from	£423

JetBlue

JetBlue
23/9-30/9
2 total stops
59h 25m total
London to Saint Lucia

American Airlines

American Airlines
6/9
1 total stop
28h 19m 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

Wed 9/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Wed 16/9

12:35-06:15

1 stop12h 40m

£718

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 16/11

13:20-15:15

1 stop29h 55m

Castries George F. L. Charle

Sun 22/11

15:45-08:30

1 stop12h 45m

£724

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 9/9

12:50-14:12

2 stops30h 22m

Castries Hewanorra

Fri 18/9

15:32-20:10

2 stops23h 38m

£737

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 17/8

16:20-14:14

2 stops26h 54m

Castries Hewanorra

Mon 7/9

15:34-13:15

1 stop16h 41m

£737

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Sun 6/9

17:45-14:14

2 stops25h 29m

Castries Hewanorra

Sun 13/9

15:32-13:15

1 stop16h 43m

£739

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 11/11

09:50-15:10

2 stops33h 20m

Castries Hewanorra

Thu 19/11

16:25-07:15

2 stops34h 50m

£755

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 12/11

08:40-15:10

2 stops34h 30m

Castries Hewanorra

Thu 19/11

16:25-07:15

2 stops34h 50m

£762

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 12/11

08:40-15:10

2 stops34h 30m

Castries Hewanorra

Wed 25/11

16:25-07:50

2 stops35h 25m

£762

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 21/1

13:25-12:05

1 stop26h 40m

Castries George F. L. Charle

Thu 18/2

12:35-05:50

1 stop13h 15m

£771

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 12/11

16:40-13:32

2 stops24h 52m

Castries Hewanorra

Sat 21/11

15:56-19:00

2 stops23h 04m

£832

Flights are sorted by cheapest return flights first.

Deals found on 27/7

Showing 1-10 of 28 resultsSorted by cheapest first

1

2

3

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 £586). Flying from London Heathrow Airport to Saint Lucia in December is currently the most expensive (average of £1,168). 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,American Airlines, 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

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

7.8

Good

7.8

Good

Reviews

1 / 20

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

American Airlines

7.1

Good

7.8

Good

Reviews

1 / 20

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

7.1

Good

7.8

Good

Reviews

1 / 20

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

British Airways

6.7

Okay

7.8

Good

Reviews

1 / 20

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

Related info for your journey

How long is the flight from London Heathrow Airport to Saint Lucia?
Delta can get you from London Heathrow Airport to Saint Lucia in just under 30h 22m. Your travel time can differ by up to . The distance between London Heathrow Airport and Saint Lucia is about 4217 mi.
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 £586). Flying from London Heathrow Airport to Saint Lucia in December is currently the most expensive (average of £1,168). 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 4 airlines flying from Heathrow to Saint Lucia

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£505	Average£772	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£575	Average£888	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest£641	Average£750	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
KLM	Cheapest£1,168	Average£1,648	FlexibilityNo cancel fee	On-time75%	Search KLM flights

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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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