£596+ 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 21 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£614

Sat 7/1113:45

LHR

-

UVF

2 stops54h 40m

Air Canada

Mon 16/1117:25

UVF

-

LHR

1 stop33h 05m

Air Canada

Deal found 20/6£665

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£668

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£672

Thu 12/1106:00

LHR

-

UVF

2 stops38h 25m

Air Canada

Thu 26/1117:25

UVF

-

LHR

2 stops33h 45m

Air Canada

Deal found 21/6£672

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£678

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£681

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£695

Mon 30/1111:10

LHR

-

UVF

2 stops57h 15m

Air Canada

Mon 7/1217:25

UVF

-

LHR

1 stop33h 05m

Air Canada

Deal found 20/6£698

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£709

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£712

Fri 14/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 14/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 18/6£738

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 21 June 2026.

Mon 9/1109:40

LHR

-

UVF

2 stops33h 30m

Delta

Mon 16/1116:25

UVF

-

LHR

2 stops23h 35m

Delta

Deal found 20/6£736

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£747

Thu 29/1010:45

LHR

-

UVF

1 stop31h 41m

Delta

Mon 9/1116:25

UVF

-

LHR

2 stops35h 40m

Delta

Deal found 18/6£745

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£750

Tue 27/1013:00

LHR

-

UVF

2 stops29h 26m

Delta

Thu 5/1116:41

UVF

-

LHR

2 stops23h 19m

Delta

Deal found 17/6£752

Wed 30/909:20

LHR

-

UVF

1 stop33h 48m

Delta

Wed 7/1015:41

UVF

-

LHR

1 stop16h 34m

Delta

Deal found 20/6£772

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£849

Tue 13/1015:15

LHR

-

UVF

1 stop28h 11m

Delta

Mon 19/1015:41

UVF

-

LHR

1 stop16h 34m

Delta

Deal found 21/6£773

Mon 9/1109:40

LHR

-

SLU

1 stop13h 15m

Multiple Airlines

Mon 16/1116:50

SLU

-

LHR

1 stop13h 05m

Multiple Airlines

Deal found 21/6£854

Sat 7/1113:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Sat 14/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 21/6£936

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£965

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£1,051

Thu 26/1113:25

LHR

-

SLU

1 stop26h 40m

Multiple Airlines

Fri 11/1215:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 17/6£1,114

Mon 19/1011:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 9/1115:45

SLU

-

LHR

1 stop12h 45m

Multiple Airlines

Deal found 20/6£1,122

Sat 7/1114:30

LHR

-

SLU

2 stops28h 00m

Multiple Airlines

Mon 7/1219:40

SLU

-

LHR

3 stops35h 10m

Multiple Airlines

Deal found 16/6£1,133

Sun 15/1113:40

LHR

-

SLU

3 stops30h 25m

Multiple Airlines

Sun 22/1118:55

SLU

-

LHR

3 stops31h 35m

Multiple Airlines

Deal found 19/6£1,145

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£614
One-way from	£596

17/9-24/9

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

15/11

15/11
1 total stop
33h 40m 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

Mon 9/11

09:40-15:10

2 stops33h 30m

Castries Hewanorra

Mon 16/11

16:25-20:00

2 stops23h 35m

£736

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

£745

Fastest return journey

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

£747

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

£750

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 27/10

13:00-14:26

2 stops29h 26m

Castries Hewanorra

Thu 5/11

16:41-20:00

2 stops23h 19m

£752

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 30/9

09:20-14:08

1 stop33h 48m

Castries Hewanorra

Wed 7/10

15:41-13:15

1 stop16h 34m

£772

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 13/10

15:15-14:26

1 stop28h 11m

Castries Hewanorra

Mon 19/10

15:41-13:15

1 stop16h 34m

£773

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 3/7

11:10-12:05

1 stop29h 55m

Castries George F. L. Charle

Thu 9/7

12:35-05:50

1 stop12h 15m

£849

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 9/11

09:40-18:55

1 stop13h 15m

Castries George F. L. Charle

Mon 16/11

16:50-09:55

1 stop13h 05m

£854

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 7/11

13:25-12:05

1 stop26h 40m

Castries George F. L. Charle

Sat 14/11

15:45-08:30

1 stop12h 45m

£936

Flights are sorted by cheapest return flights first.

Deals found on 19/6

Showing 1-10 of 29 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-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 £500). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £806). 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?
Delta can get you from London Heathrow Airport to Saint Lucia in just under 33h 30m. 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 £500). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £806). 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£508	Average£806	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
JetBlue	Cheapest£541	Average£847	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Air Canada	Cheapest£645	Average£789	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Finnair	Cheapest£702	Average£922	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
American Airlines	Cheapest£718	Average£975	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
KLM	Cheapest£1,175	Average£1,616	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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