£421+ 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 1 July 2026.

Tue 18/812:15

LHR

-

UVF

1 stop30h 34m

American Airlines

Thu 19/1116:50

UVF

-

LHR

2 stops33h 00m

American Airlines

Deal found 28/6£681

Thu 12/1119:10

LHR

-

UVF

2 stops24h 40m

American Airlines

Thu 19/1114:28

UVF

-

LHR

1 stop17h 37m

American Airlines

Deal found 27/6£682

Fri 7/809:15

LHR

-

UVF

1 stop34h 04m

American Airlines

Sat 15/814:04

UVF

-

LHR

1 stop15h 16m

American Airlines

Deal found 28/6£683

Thu 9/712:00

LHR

-

UVF

1 stop31h 20m

American Airlines

Sun 19/714:50

UVF

-

LHR

1 stop16h 45m

American Airlines

Deal found 26/6£684

Tue 1/1219:05

LHR

-

UVF

2 stops24h 48m

American Airlines

Thu 17/1214:04

UVF

-

LHR

1 stop17h 26m

American Airlines

Deal found 28/6£685

Tue 18/816:10

LHR

-

UVF

2 stops26h 39m

American Airlines

Mon 16/1116:50

UVF

-

LHR

2 stops33h 30m

American Airlines

Deal found 28/6£686

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£686

Mon 6/718:05

LHR

-

UVF

2 stops25h 15m

American Airlines

Fri 10/715:20

UVF

-

LHR

1 stop15h 50m

American Airlines

Deal found 30/6£689

Mon 9/1113:20

LHR

-

SLU

1 stop26h 45m

Multiple Airlines

Mon 16/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 1/7£716

Tue 8/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sat 12/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 27/6£721

Sun 16/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 23/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 27/6£731

Wed 19/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 14/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 1/7£740

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 1 July 2026.

Sun 8/1115:00

LHR

-

UVF

1 stop29h 40m

Air Canada

Sun 15/1117:40

UVF

-

LHR

2 stops32h 50m

Air Canada

Deal found 1/7£722

Sun 16/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 23/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 27/6£731

Mon 9/1109:40

LHR

-

UVF

2 stops33h 30m

Delta

Mon 16/1116:25

UVF

-

LHR

2 stops23h 35m

Delta

Deal found 29/6£735

Tue 18/815:15

LHR

-

UVF

1 stop27h 59m

Delta

Fri 20/1116:25

UVF

-

LHR

2 stops34h 25m

Delta

Deal found 27/6£735

Sun 16/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 15/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 27/6£748

Tue 18/817:55

LHR

-

UVF

2 stops25h 19m

Delta

Wed 18/1116:25

UVF

-

LHR

2 stops34h 25m

Delta

Deal found 27/6£735

Tue 18/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 18/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 29/6£748

Mon 17/815:15

LHR

-

UVF

1 stop27h 59m

Delta

Mon 23/1116:25

UVF

-

LHR

1 stop34h 00m

Delta

Deal found 27/6£735

Sat 26/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 7/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 30/6£767

Wed 30/912:50

LHR

-

UVF

2 stops30h 22m

Delta

Wed 7/1015:41

UVF

-

LHR

1 stop16h 34m

Delta

Deal found 29/6£735

Mon 28/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sat 10/1012:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 28/6£783

Mon 24/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Fri 4/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 29/6£845

Fri 21/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Sun 23/812:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 30/6£880

Fri 14/811:10

LHR

-

SLU

1 stop29h 55m

Multiple Airlines

Fri 21/812:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 30/6£908

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£996

Mon 17/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Tue 18/812:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 27/6£1,059

Fri 24/711:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Fri 4/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 26/6£1,085

Mon 9/1112:15

LHR

-

SLU

3 stops23h 55m

Multiple Airlines

Mon 16/1119:40

SLU

-

LHR

3 stops35h 10m

Multiple Airlines

Deal found 28/6£1,110

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£681
One-way from	£421

American Airlines

American Airlines
18/8-19/11
2 total stops
47h 36m total
London to Saint Lucia

American Airlines

American Airlines
14/8
2 total stops
28h 39m 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

Sun 8/11

15:00-16:40

1 stop29h 40m

Castries Hewanorra

Sun 15/11

17:40-06:30

2 stops32h 50m

£722

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sun 16/8

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Mon 23/11

15:45-08:30

1 stop12h 45m

£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

£735

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

£735

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 18/8

17:55-14:14

2 stops25h 19m

Castries Hewanorra

Wed 18/11

16:25-06:50

2 stops34h 25m

£735

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 17/8

15:15-14:14

1 stop27h 59m

Castries Hewanorra

Mon 23/11

16:25-06:25

1 stop34h 00m

£735

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

£735

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sun 16/8

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sun 15/11

15:45-08:30

1 stop12h 45m

£748

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

£748

Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 26/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Wed 7/10

12:35-06:15

1 stop12h 40m

£767

Flights are sorted by cheapest return flights first.

Deals found on 28/6

Showing 1-10 of 37 resultsSorted by cheapest first

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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 £499). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £805). 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

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

7.6

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?
Air Canada and Delta can get you from London Heathrow Airport to Saint Lucia in just under 29h 40m. Your travel time can differ by up to 3h 50m. 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 £499). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £805). 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£507	Average£805	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
JetBlue	Cheapest£541	Average£846	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Air Canada	Cheapest£644	Average£788	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Finnair	Cheapest£701	Average£921	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£1,174	Average£1,614	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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