£423+ 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 22 July 2026.

Tue 8/908:15

LHR

-

UVF

1 stop36h 05m

JetBlue

Wed 16/916:25

UVF

-

LHR

1 stop23h 20m

JetBlue

Deal found 21/7£585

Tue 1/908:15

LHR

-

UVF

1 stop35h 57m

JetBlue

Mon 14/916:25

UVF

-

LHR

1 stop36h 05m

JetBlue

Deal found 18/7£629

Mon 7/908:15

LHR

-

UVF

1 stop33h 38m

JetBlue

Wed 7/1016:25

UVF

-

LHR

1 stop23h 20m

JetBlue

Deal found 21/7£629

Wed 2/911:10

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Tue 24/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 19/7£646

Wed 2/911:10

LHR

-

SLU

1 stop33h 05m

Multiple Airlines

Wed 16/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 18/7£647

Mon 21/911:55

LHR

-

UVF

1 stop32h 25m

JetBlue

Sun 4/1016:25

UVF

-

LHR

1 stop36h 05m

JetBlue

Deal found 18/7£659

Mon 7/908:15

LHR

-

UVF

1 stop35h 51m

JetBlue

Wed 30/916:25

UVF

-

LHR

1 stop23h 20m

JetBlue

Deal found 21/7£660

Mon 9/1107:25

LHR

-

UVF

1 stop36h 44m

JetBlue

Mon 23/1117:22

UVF

-

LHR

1 stop24h 18m

JetBlue

Deal found 22/7£669

Mon 5/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 11/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 19/7£670

Mon 9/1113:20

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Mon 16/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 20/7£674

Mon 9/1117:00

LHR

-

UVF

2 stops26h 50m

British Airways

Mon 16/1116:50

UVF

-

LHR

1 stop15h 15m

British Airways

Deal found 18/7£681

Wed 4/1114:30

LHR

-

UVF

1 stop27h 02m

American Airlines

Mon 23/1115:56

UVF

-

LHR

1 stop15h 34m

American Airlines

Deal found 22/7£684

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 22 July 2026.

Wed 2/911:10

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Tue 24/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 19/7£646

Mon 7/909:40

LHR

-

UVF

2 stops33h 32m

Delta

Wed 30/915:32

UVF

-

LHR

2 stops23h 38m

Delta

Deal found 21/7£897

Fri 13/1106:50

LHR

-

UVF

2 stops34h 17m

United Airlines

Sat 21/1117:17

UVF

-

LHR

2 stops34h 38m

United Airlines

Deal found 18/7£976

Mon 9/1113:20

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Fri 13/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 19/7£647

Mon 21/911:10

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Mon 28/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 22/7£716

Wed 16/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 23/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 22/7£734

Wed 11/1111:05

LHR

-

UVF

2 stops32h 05m

Delta

Fri 20/1116:25

UVF

-

LHR

1 stop36h 35m

Delta

Deal found 19/7£915

Sun 4/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 12/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 18/7£737

Fri 23/1018:00

LHR

-

UVF

1 stop24h 31m

United Airlines

Sat 31/1012:52

UVF

-

LHR

1 stop19h 08m

United Airlines

Deal found 22/7£987

Thu 5/1113:25

LHR

-

SLU

1 stop29h 50m

Multiple Airlines

Thu 12/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 18/7£745

Sun 4/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 18/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 18/7£786

Fri 13/1108:55

LHR

-

UVF

1 stop34h 15m

Delta

Thu 19/1116:25

UVF

-

LHR

2 stops36h 10m

Delta

Deal found 19/7£1,174

Fri 27/1113:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Fri 4/1212:35

SLU

-

LHR

1 stop13h 15m

Multiple Airlines

Deal found 21/7£798

Mon 7/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 7/1015:45

SLU

-

LHR

1 stop33h 05m

Multiple Airlines

Deal found 22/7£802

Tue 15/1206:35

LHR

-

UVF

2 stops59h 40m

United Airlines

Sat 16/117:17

UVF

-

LHR

2 stops34h 38m

United Airlines

Deal found 21/7£1,440

Thu 17/1212:30

LHR

-

UVF

1 stop30h 40m

Delta

Thu 24/1216:40

UVF

-

LHR

2 stops58h 10m

Delta

Deal found 18/7£1,381

Tue 15/1215:50

LHR

-

UVF

1 stop27h 20m

Delta

Wed 30/1216:40

UVF

-

LHR

2 stops36h 20m

Delta

Deal found 18/7£1,434

Mon 16/1113:20

LHR

-

SLU

1 stop26h 45m

Multiple Airlines

Sun 29/1112:35

SLU

-

LHR

1 stop13h 15m

Multiple Airlines

Deal found 19/7£916

Sat 14/1113:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Sat 21/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 18/7£934

Mon 3/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 25/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 19/7£964

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£585
One-way from	£423

JetBlue

JetBlue
8/9-16/9
2 total stops
59h 25m total
London to Saint Lucia

American Airlines

American Airlines
21/8
1 total stop
31h 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

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 2/9

11:10-12:05

1 stop29h 55m

Castries George F. L. Charle

Tue 24/11

15:45-08:30

1 stop12h 45m

£646

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 9/11

13:20-15:15

1 stop29h 55m

Castries George F. L. Charle

Fri 13/11

15:45-08:30

1 stop12h 45m

£647

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 21/9

11:10-12:05

1 stop29h 55m

Castries George F. L. Charle

Mon 28/9

12:35-06:15

1 stop12h 40m

£716

Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 16/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Wed 23/9

12:35-06:15

1 stop12h 40m

£734

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sun 4/10

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Mon 12/10

12:35-06:15

1 stop12h 40m

£737

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 5/11

13:25-15:15

1 stop29h 50m

Castries George F. L. Charle

Thu 12/11

15:45-08:30

1 stop12h 45m

£745

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sun 4/10

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sun 18/10

12:35-06:15

1 stop12h 40m

£786

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 27/11

13:25-12:05

1 stop26h 40m

Castries George F. L. Charle

Fri 4/12

12:35-05:50

1 stop13h 15m

£798

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 7/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Wed 7/10

15:45-05:50

1 stop33h 05m

£802

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 7/9

09:40-14:12

2 stops33h 32m

Castries Hewanorra

Wed 30/9

15:32-20:10

2 stops23h 38m

£897

Flights are sorted by cheapest return flights first.

Deals found on 22/7

Showing 1-10 of 36 resultsSorted by cheapest first

1

2

3

4

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 £584). Flying from London Heathrow Airport to Saint Lucia in December is currently the most expensive (average of £1,163). 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 and United Airlines can get you from London Heathrow Airport to Saint Lucia in just under 33h 32m. Your travel time can differ by up to 45m. 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 £584). Flying from London Heathrow Airport to Saint Lucia in December is currently the most expensive (average of £1,163). 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£503	Average£769	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£573	Average£884	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest£638	Average£744	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
KLM	Cheapest£1,163	Average£1,600	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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