£420+ 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 9 June 2026.

Thu 3/910:45

LHR

-

SLU

1 stop13h 15m

Multiple Airlines

Thu 17/912:35

SLU

-

LHR

1 stop12h 15m

Multiple Airlines

Deal found 9/6£659

Tue 7/708:15

LHR

-

UVF

1 stop36h 12m

JetBlue

Mon 20/716:40

UVF

-

LHR

1 stop23h 05m

JetBlue

Deal found 5/6£681

Wed 16/911:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Wed 30/912:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 6/6£717

Sat 7/1112:05

LHR

-

UVF

2 stops56h 20m

Air Canada

Sun 15/1117:25

UVF

-

LHR

2 stops23h 10m

Air Canada

Deal found 6/6£730

Thu 27/811:45

LHR

-

UVF

2 stops31h 29m

Delta

Thu 3/915:34

UVF

-

LHR

1 stop16h 41m

Delta

Deal found 7/6£736

Tue 1/920:05

LHR

-

UVF

2 stops23h 09m

Delta

Tue 15/915:33

UVF

-

LHR

2 stops34h 12m

Delta

Deal found 9/6£737

Sun 22/1115:50

LHR

-

UVF

1 stop27h 20m

Delta

Wed 2/1216:25

UVF

-

LHR

1 stop15h 15m

Delta

Deal found 6/6£740

Tue 29/920:05

LHR

-

UVF

2 stops23h 03m

Delta

Mon 5/1015:33

UVF

-

LHR

1 stop16h 42m

Delta

Deal found 5/6£741

Sat 24/1020:05

LHR

-

UVF

2 stops48h 20m

SWISS

Thu 5/1117:25

UVF

-

LHR

2 stops23h 10m

SWISS

Deal found 6/6£751

Tue 7/711:55

LHR

-

UVF

1 stop32h 32m

JetBlue

Tue 21/716:40

UVF

-

LHR

1 stop23h 05m

JetBlue

Deal found 9/6£753

Mon 2/1109:55

LHR

-

UVF

1 stop33h 05m

American Airlines

Tue 10/1116:04

UVF

-

LHR

1 stop15h 36m

American Airlines

Deal found 5/6£753

Wed 19/812:10

LHR

-

UVF

2 stops55h 10m

Air Canada

Tue 25/815:15

UVF

-

LHR

2 stops24h 45m

Air Canada

Deal found 7/6£754

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 9 June 2026.

Mon 21/916:20

LHR

-

UVF

2 stops26h 48m

Delta

Sat 3/1015:33

UVF

-

LHR

1 stop16h 42m

Delta

Deal found 7/6£737

Tue 7/711:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 20/712:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 4/6£925

Sun 21/608:15

LHR

-

UVF

1 stop33h 29m

JetBlue

Sun 5/713:46

UVF

-

LHR

1 stop25h 59m

JetBlue

Deal found 4/6£962

Fri 25/906:50

LHR

-

UVF

2 stops35h 41m

United Airlines

Sat 10/1014:35

UVF

-

LHR

2 stops41h 00m

United Airlines

Deal found 9/6£971

Mon 23/1112:30

LHR

-

UVF

1 stop30h 40m

Delta

Wed 2/1216:25

UVF

-

LHR

2 stops34h 25m

Delta

Deal found 6/6£740

Sun 22/1112:30

LHR

-

UVF

1 stop30h 40m

Delta

Wed 2/1216:25

UVF

-

LHR

2 stops34h 25m

Delta

Deal found 6/6£740

Sun 22/1116:50

LHR

-

UVF

2 stops50h 20m

Delta

Fri 4/1216:25

UVF

-

LHR

1 stop36h 35m

Delta

Deal found 6/6£740

Sat 1/811:10

LHR

-

SLU

1 stop12h 50m

Multiple Airlines

Mon 10/812:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 7/6£955

Tue 29/920:05

LHR

-

UVF

2 stops23h 03m

Delta

Mon 5/1015:33

UVF

-

LHR

1 stop16h 42m

Delta

Deal found 5/6£741

Thu 16/710:45

LHR

-

SLU

1 stop13h 15m

Multiple Airlines

Thu 23/709:10

SLU

-

LHR

1 stop15h 40m

Multiple Airlines

Deal found 7/6£992

Mon 5/1015:15

LHR

-

UVF

1 stop28h 11m

Delta

Mon 12/1015:41

UVF

-

LHR

1 stop16h 34m

Delta

Deal found 8/6£771

Thu 16/710:45

LHR

-

SLU

1 stop13h 15m

Multiple Airlines

Wed 22/712:35

SLU

-

LHR

1 stop12h 40m

Multiple Airlines

Deal found 7/6£1,010

Sat 26/911:45

LHR

-

UVF

2 stops31h 23m

Delta

Sat 3/1015:33

UVF

-

LHR

1 stop16h 42m

Delta

Deal found 7/6£893

Thu 24/916:50

LHR

-

SLU

3 stops26h 45m

Multiple Airlines

Sun 4/1018:55

SLU

-

LHR

3 stops34h 05m

Multiple Airlines

Deal found 9/6£1,109

Wed 19/812:50

LHR

-

UVF

2 stops30h 24m

Delta

Wed 26/815:34

UVF

-

LHR

2 stops34h 11m

Delta

Deal found 7/6£942

Fri 2/1014:05

LHR

-

SLU

3 stops33h 55m

Multiple Airlines

Fri 9/1012:35

SLU

-

LHR

3 stops27h 25m

Multiple Airlines

Deal found 8/6£1,173

Tue 21/709:35

LHR

-

SLU

1 stop14h 25m

Multiple Airlines

Tue 4/812:35

SLU

-

LHR

1 stop15h 45m

Multiple Airlines

Deal found 6/6£1,194

Tue 8/911:20

LHR

-

SLU

2 stops27h 10m

Multiple Airlines

Thu 17/917:50

SLU

-

LHR

2 stops21h 20m

Multiple Airlines

Deal found 9/6£1,207

Sat 7/1118:00

LHR

-

SLU

2 stops29h 00m

Multiple Airlines

Sun 15/1118:55

SLU

-

LHR

2 stops21h 05m

Multiple Airlines

Deal found 8/6£1,207

Sat 15/817:40

LHR

-

SLU

2 stops30h 20m

Multiple Airlines

Sat 22/812:35

SLU

-

LHR

2 stops18h 15m

Multiple Airlines

Deal found 8/6£1,211

Mon 7/909:35

LHR

-

SLU

2 stops27h 35m

Multiple Airlines

Wed 7/1010:15

SLU

-

LHR

3 stops18h 05m

Multiple Airlines

Deal found 9/6£1,258

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£681
One-way from	£420

JetBlue

JetBlue
7/7-20/7
2 total stops
59h 17m total
London to Saint Lucia

24/7

24/7
3 total stops
45h 30m 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 21/9

16:20-14:08

2 stops26h 48m

Castries Hewanorra

Sat 3/10

15:33-13:15

1 stop16h 42m

£737

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 23/11

12:30-15:10

1 stop30h 40m

Castries Hewanorra

Wed 2/12

16:25-06:50

2 stops34h 25m

£740

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Sun 22/11

12:30-15:10

1 stop30h 40m

Castries Hewanorra

Wed 2/12

16:25-06:50

2 stops34h 25m

£740

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Sun 22/11

16:50-15:10

2 stops50h 20m

Castries Hewanorra

Fri 4/12

16:25-09:00

1 stop36h 35m

£740

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 29/9

20:05-14:08

2 stops23h 03m

Castries Hewanorra

Mon 5/10

15:33-13:15

1 stop16h 42m

£741

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 5/10

15:15-14:26

1 stop28h 11m

Castries Hewanorra

Mon 12/10

15:41-13:15

1 stop16h 34m

£771

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Sat 26/9

11:45-14:08

2 stops31h 23m

Castries Hewanorra

Sat 3/10

15:33-13:15

1 stop16h 42m

£893

Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Tue 7/7

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Mon 20/7

12:35-06:15

1 stop12h 40m

£925

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 19/8

12:50-14:14

2 stops30h 24m

Castries Hewanorra

Wed 26/8

15:34-06:45

2 stops34h 11m

£942

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sat 1/8

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Mon 10/8

12:35-06:15

1 stop12h 40m

£955

Flights are sorted by cheapest return flights first.

Deals found on 9/6

Showing 1-10 of 35 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 £496). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £758). 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

7.7

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 26h 48m. 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 £496). Flying from London Heathrow Airport to Saint Lucia in July is currently the most expensive (average of £758). 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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Gatwick to Nassau flights

Top 6 airlines flying from Heathrow to Saint Lucia

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£504	Average£832	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
JetBlue	Cheapest£537	Average£841	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Air Canada	Cheapest£640	Average£783	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Finnair	Cheapest£697	Average£915	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
American Airlines	Cheapest£713	Average£968	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
KLM	Cheapest£1,167	Average£1,550	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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