£419+ 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 6 July 2026.

Mon 7/1210:35

LHR

-

SLU

1 stop12h 25m

Multiple Airlines

Sun 13/1215:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 3/7£606

Tue 1/1207:25

LHR

-

UVF

1 stop35h 32m

JetBlue

Tue 8/1216:57

UVF

-

LHR

1 stop24h 43m

JetBlue

Deal found 2/7£606

Mon 5/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 12/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 5/7£660

Tue 25/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Tue 8/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 3/7£671

Wed 4/1113:25

LHR

-

SLU

1 stop29h 50m

Multiple Airlines

Wed 11/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 5/7£672

Wed 30/908:15

LHR

-

UVF

1 stop36h 05m

JetBlue

Sun 11/1016:25

UVF

-

LHR

1 stop36h 05m

JetBlue

Deal found 5/7£672

Mon 9/1114:30

LHR

-

UVF

1 stop26h 51m

American Airlines

Mon 16/1116:50

UVF

-

LHR

1 stop14h 40m

American Airlines

Deal found 2/7£677

Tue 18/812:15

LHR

-

UVF

1 stop30h 34m

American Airlines

Thu 19/1116:50

UVF

-

LHR

2 stops33h 00m

American Airlines

Deal found 1/7£678

Fri 7/809:15

LHR

-

UVF

1 stop32h 49m

American Airlines

Sun 9/815:29

UVF

-

LHR

1 stop34h 26m

American Airlines

Deal found 2/7£679

Thu 9/715:00

LHR

-

UVF

1 stop28h 20m

American Airlines

Thu 16/713:10

UVF

-

LHR

1 stop15h 15m

American Airlines

Deal found 1/7£681

Sat 4/715:00

LHR

-

UVF

1 stop28h 20m

American Airlines

Sat 11/714:22

UVF

-

LHR

1 stop14h 58m

American Airlines

Deal found 2/7£682

Mon 28/1217:00

LHR

-

UVF

2 stops25h 06m

American Airlines

Thu 14/117:02

UVF

-

LHR

2 stops33h 13m

American Airlines

Deal found 3/7£683

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 6 July 2026.

Thu 15/1018:05

LHR

-

UVF

2 stops25h 02m

American Airlines

Fri 23/1015:01

UVF

-

LHR

2 stops23h 44m

American Airlines

Deal found 1/7£688

Tue 27/1013:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Tue 3/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 2/7£712

Tue 18/815:15

LHR

-

UVF

1 stop27h 59m

Delta

Fri 20/1116:25

UVF

-

LHR

2 stops34h 25m

Delta

Deal found 1/7£731

Sun 13/917:45

LHR

-

UVF

2 stops25h 27m

Delta

Mon 21/915:32

UVF

-

LHR

1 stop16h 43m

Delta

Deal found 1/7£731

Tue 18/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 18/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 1/7£744

Mon 9/1109:40

LHR

-

UVF

2 stops33h 30m

Delta

Mon 16/1116:25

UVF

-

LHR

2 stops23h 35m

Delta

Deal found 2/7£732

Fri 2/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Thu 8/1012:35

SLU

-

LHR

1 stop12h 15m

Multiple Airlines

Deal found 5/7£768

Mon 5/1009:40

LHR

-

UVF

2 stops33h 46m

Delta

Thu 15/1015:41

UVF

-

LHR

1 stop16h 34m

Delta

Deal found 2/7£732

Wed 5/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Tue 8/612:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 3/7£811

Tue 1/918:55

LHR

-

UVF

2 stops24h 19m

Delta

Sun 13/915:32

UVF

-

LHR

1 stop16h 43m

Delta

Deal found 4/7£737

Wed 30/912:50

LHR

-

UVF

2 stops30h 22m

Delta

Wed 7/1015:41

UVF

-

LHR

1 stop16h 34m

Delta

Deal found 4/7£737

Mon 5/1011:45

LHR

-

UVF

2 stops31h 41m

Delta

Mon 12/1015:41

UVF

-

LHR

1 stop16h 34m

Delta

Deal found 5/7£737

Fri 16/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Fri 23/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 2/7£901

Sun 15/1113:20

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Sun 29/1112:35

SLU

-

LHR

1 stop13h 15m

Multiple Airlines

Deal found 4/7£928

Mon 21/1210:35

LHR

-

SLU

1 stop12h 25m

Multiple Airlines

Fri 15/112:35

SLU

-

LHR

1 stop13h 15m

Multiple Airlines

Deal found 1/7£988

Tue 18/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Tue 25/812:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 4/7£1,007

Mon 19/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 9/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 3/7£1,076

Fri 24/711:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Fri 4/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 5/7£1,089

Wed 30/911:45

LHR

-

SLU

2 stops30h 25m

Multiple Airlines

Sun 11/1018:55

SLU

-

LHR

2 stops20h 15m

Multiple Airlines

Deal found 5/7£1,165

Wed 11/1116:40

LHR

-

SLU

2 stops24h 30m

Multiple Airlines

Fri 20/1115:20

SLU

-

LHR

2 stops19h 05m

Multiple Airlines

Deal found 2/7£1,186

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£606
One-way from	£419

7/12-13/12

7/12-13/12
2 total stops
25h 10m total
London to Saint Lucia

American Airlines

American Airlines
6/9
1 total stop
31h 57m 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 - UVF

LHRUVF

London Heathrow

Thu 15/10

18:05-14:07

2 stops25h 02m

Castries Hewanorra

Fri 23/10

15:01-19:45

2 stops23h 44m

£688

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 27/10

13:25-12:05

1 stop26h 40m

Castries George F. L. Charle

Tue 3/11

15:45-08:30

1 stop12h 45m

£712

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 18/8

15:15-14:14

1 stop27h 59m

Castries Hewanorra

Fri 20/11

16:25-06:50

2 stops34h 25m

£731

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Sun 13/9

17:45-14:12

2 stops25h 27m

Castries Hewanorra

Mon 21/9

15:32-13:15

1 stop16h 43m

£731

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 9/11

09:40-15:10

2 stops33h 30m

Castries Hewanorra

Mon 16/11

16:25-20:00

2 stops23h 35m

£732

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 5/10

09:40-14:26

2 stops33h 46m

Castries Hewanorra

Thu 15/10

15:41-13:15

1 stop16h 34m

£732

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 1/9

18:55-14:14

2 stops24h 19m

Castries Hewanorra

Sun 13/9

15:32-13:15

1 stop16h 43m

£737

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 30/9

12:50-14:12

2 stops30h 22m

Castries Hewanorra

Wed 7/10

15:41-13:15

1 stop16h 34m

£737

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 5/10

11:45-14:26

2 stops31h 41m

Castries Hewanorra

Mon 12/10

15:41-13:15

1 stop16h 34m

£737

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 18/8

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Wed 18/11

15:45-08:30

1 stop12h 45m

£744

Flights are sorted by cheapest return flights first.

Deals found on 5/7

Showing 1-10 of 40 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-SLU

LHR-UVF

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-SLU

LHR-UVF

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 £495). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £799). 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

10.0

Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent

7.8

Good

7.8

Good

Reviews

1 / 20

10.0

Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent

American Airlines

7.1

Good

7.8

Good

Reviews

1 / 20

10.0

Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent

7.1

Good

7.8

Good

Reviews

1 / 20

10.0

Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent

7.1

Good

7.8

Good

Reviews

1 / 20

10.0

Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent

British Airways

6.7

Okay

7.8

Good

Reviews

1 / 20

10.0

Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent

Related info for your journey

How long is the flight from London Heathrow Airport to Saint Lucia?
American Airlines and Delta can get you from London Heathrow Airport to Saint Lucia in just under 25h 02m. Your travel time can differ by up to 2h 57m. 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 £495). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £799). 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 5 airlines flying from Heathrow to Saint Lucia

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£503	Average£799	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
JetBlue	Cheapest£537	Average£840	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Air Canada	Cheapest£639	Average£782	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Finnair	Cheapest£696	Average£914	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£1,165	Average£1,602	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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