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Cheap flights from Saint Lucia to London Heathrow Airport from £390

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
UVF — LHR
26 Apr — 3 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Saint Lucia to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Saint Lucia to Heathrow
Explore the most affordable flight options available from Saint Lucia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 March 2026.

Wed 1/416:20
UVF
-
LHR
2 stops23h 40m
Multiple Airlines
Wed 20/120:05
LHR
-
UVF
2 stops48h 20m
Multiple Airlines
Deal found 25/3£814
Tue 28/415:57
UVF
-
LHR
2 stops18h 03m
Multiple Airlines
Sat 23/107:50
LHR
-
UVF
2 stops35h 51m
Multiple Airlines
Deal found 25/3£817
Wed 1/416:20
UVF
-
LHR
2 stops47h 40m
Air Canada
Thu 21/109:00
LHR
-
UVF
2 stops35h 25m
Air Canada
Deal found 25/3£822
Thu 2/416:15
UVF
-
LHR
1 stop35h 20m
Air Canada
Sun 5/409:30
LHR
-
UVF
2 stops34h 50m
Air Canada
Deal found 22/3£833
Thu 2/416:15
UVF
-
LHR
1 stop36h 20m
Air Canada
Tue 7/414:10
LHR
-
UVF
1 stop30h 10m
Air Canada
Deal found 22/3£839
Wed 1/416:20
UVF
-
LHR
2 stops33h 10m
Air Canada
Tue 7/417:40
LHR
-
UVF
1 stop26h 40m
Air Canada
Deal found 22/3£859
Wed 1/416:20
UVF
-
LHR
2 stops33h 10m
Air Canada
Sun 5/408:30
LHR
-
UVF
1 stop35h 50m
Air Canada
Deal found 22/3£900
Sat 9/517:50
SLU
-
LHR
2 stops31h 45m
Multiple Airlines
Sat 16/512:40
LHR
-
SLU
3 stops30h 55m
Multiple Airlines
Deal found 25/3£1,030
Mon 4/519:10
SLU
-
LHR
2 stops32h 40m
Multiple Airlines
Fri 8/519:50
LHR
-
SLU
3 stops31h 20m
Multiple Airlines
Deal found 24/3£1,046
Mon 20/419:10
SLU
-
LHR
3 stops32h 55m
Multiple Airlines
Thu 30/409:50
LHR
-
SLU
3 stops33h 45m
Multiple Airlines
Deal found 26/3£1,092
Tue 28/419:10
SLU
-
LHR
3 stops32h 55m
Multiple Airlines
Tue 26/109:40
LHR
-
SLU
1 stop12h 45m
Multiple Airlines
Deal found 25/3£1,165
Tue 28/419:10
SLU
-
LHR
3 stops32h 55m
Multiple Airlines
Wed 20/109:40
LHR
-
SLU
1 stop13h 20m
Multiple Airlines
Deal found 25/3£1,189

Find flight deals from Saint Lucia to Heathrow

Keep the following information in mind while searching for Saint Lucia to Heathrow flight deals. Data was last updated 27 March 2026.

Round-trip from

£817

One-way from

£390
28/4-23/1
  • 28/4-23/1
  • 4 total stops
  • 53h 54m total
  • Saint Lucia to London
Search Deals
6/5
  • 6/5
  • 2 total stops
  • 18h 12m total
  • Saint Lucia to London
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Saint Lucia to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 March 2026.
Use the filters below to find and compare flights from Saint Lucia to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Wed 13/5

15:48-15:00

2 stops18h 12m

London Heathrow

Mon 25/5

19:10-12:50

2 stops46h 40m

£993

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Mon 4/5

19:10-08:50

2 stops32h 40m

London Heathrow

Fri 8/5

19:50-22:10

3 stops31h 20m

£1,046

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Mon 20/4

16:15-11:50

1 stop14h 35m

London Heathrow

Thu 30/4

14:10-14:05

1 stop28h 55m

£1,047

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Mon 27/4

15:57-20:20

2 stops47h 23m

London Heathrow

Sun 30/8

21:25-12:42

2 stops44h 17m

£1,115

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Mon 27/4

15:57-20:45

1 stop23h 48m

London Heathrow

Sun 30/8

08:40-15:15

2 stops35h 35m

£1,130

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Mon 20/4

19:10-11:50

2 stops35h 40m

London Heathrow

Thu 30/4

17:40-14:35

2 stops25h 55m

£1,158

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 17/7

15:05-21:00

2 stops24h 55m

London Heathrow

Fri 31/7

17:40-15:31

2 stops26h 51m

£1,193
Fastest return journey

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Tue 28/4

19:10-20:10

2 stops20h 00m

London Heathrow

Wed 20/1

08:00-19:00

1 stop15h 00m

£1,206

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Tue 5/5

19:10-08:05

3 stops31h 55m

London Heathrow

Sun 24/5

20:05-15:35

2 stops24h 30m

£1,234

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Wed 13/5

10:15-20:10

3 stops28h 55m

London Heathrow

Mon 25/5

20:05-15:35

2 stops24h 30m

£1,262

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 33 resultsSorted by cheapest first
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Best time to book a flight from Saint Lucia to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Saint Lucia with our price prediction graph.
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 Saint Lucia to London Heathrow Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Saint Lucia to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Saint Lucia to London Heathrow Airport?

    Departing from Saint Lucia to London Heathrow Airport will take you 14h 35m. Saint Lucia and London Heathrow Airport are separated by a distance of 4217 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Saint Lucia to Heathrow that include hotel bookings?

    Yes. In addition to deals on Saint Lucia to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Saint Lucia to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Saint Lucia to Heathrow.

  • Can I find deals for business class flights from Saint Lucia to Heathrow?

    Yes. Cheapflights offers flight deals from Saint Lucia to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Eastbourne
Guildford
Watford
Kingston upon Thames
Romford
Ipswich
Swindon
Bedford

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How does Cheapflights help users find flights from Saint Lucia to Heathrow?

Cheapflights makes it easy to find Saint Lucia to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Saint Lucia to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Saint Lucia.

Can Cheapflights find flights from Saint Lucia to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Saint Lucia? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Saint Lucia to Heathrow become cheaper?

Yes! Start tracking prices for Saint Lucia to Heathrow 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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