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Cheap flights from Saint Lucia to London Heathrow Airport from £337

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
UVF — LHR
3 Sep — 10 Sep1
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 4 August 2026.

Sun 11/1016:25 -
1 stop23h 20m
Sat 31/1012:20 -
1 stop31h 49m
Deal found 2/8£779
Sun 6/913:33 -
1 stop14h 57m
Thu 24/908:15 -
1 stop36h 19m
Deal found 3/8£795
Fri 25/916:39 -
2 stops17h 21m
Sat 3/1009:50 -
2 stops34h 44m
Deal found 30/7£796
Fri 16/1015:15 -
2 stops24h 45m
Sun 25/1006:00 -
2 stops37h 40m
Deal found 2/8£800
Fri 25/916:39 -
1 stop23h 06m
Sat 3/1008:15 -
1 stop36h 19m
Deal found 31/7£821
Sun 11/1014:30 -
2 stops24h 50m
Sat 31/1010:00 -
3 stops34h 40m
Deal found 2/8£833
Mon 14/916:39 -
1 stop23h 06m
Wed 16/908:15 -
1 stop36h 19m
Deal found 2/8£844
Tue 8/916:17 -
1 stop23h 28m
Wed 7/1011:55 -
1 stop32h 25m
Deal found 2/8£857
Thu 8/1012:35 -
1 stop12h 15m
Tue 10/1113:25 -
1 stop26h 40m
Deal found 31/7£912
Thu 17/915:45 -
1 stop12h 35m
Thu 24/909:35 -
1 stop14h 25m
Deal found 3/8£994
Mon 7/919:40 -
3 stops35h 15m
Mon 5/1014:05 -
3 stops33h 55m
Deal found 31/7£1,023
Sun 11/1012:35 -
1 stop12h 40m
Sat 31/1013:25 -
1 stop33h 35m
Deal found 3/8£1,026

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 4 August 2026.

Round-trip from

£779

One-way from

£337
JetBlue
  • JetBlue
  • 11/10-31/10
  • 2 total stops
  • 55h 09m total
  • Saint Lucia to London
Search Deals
JetBlue
  • JetBlue
  • 21/10
  • 1 total stop
  • 23h 20m 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 4 August 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

Sun 11/10

16:25-20:45

1 stop23h 20m

London Heathrow

Sat 31/10

12:20-16:09

1 stop31h 49m

£779

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sun 6/9

13:33-09:30

1 stop14h 57m

London Heathrow

Thu 24/9

08:15-15:34

1 stop36h 19m

£795

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 16/10

15:15-21:00

2 stops24h 45m

London Heathrow

Sun 25/10

06:00-15:40

2 stops37h 40m

£800

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 25/9

16:39-20:45

1 stop23h 06m

London Heathrow

Sat 3/10

08:15-15:34

1 stop36h 19m

£821

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Mon 14/9

16:39-20:45

1 stop23h 06m

London Heathrow

Wed 16/9

08:15-15:34

1 stop36h 19m

£844

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 16/10

15:15-21:00

2 stops24h 45m

London Heathrow

Sun 25/10

10:00-15:40

3 stops33h 40m

£870

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Thu 8/10

12:35-05:50

1 stop12h 15m

London Heathrow

Tue 10/11

13:25-12:05

1 stop26h 40m

£912

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 25/9

16:39-22:25

2 stops48h 46m

London Heathrow

Sat 3/10

11:20-15:34

2 stops33h 14m

£917

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Mon 17/8

13:59-09:30

1 stop14h 31m

London Heathrow

Mon 24/8

08:15-12:39

1 stop33h 24m

£920

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Thu 17/9

15:45-09:20

1 stop12h 35m

London Heathrow

Thu 24/9

09:35-19:00

1 stop14h 25m

£994

Flights are sorted by cheapest return flights first.

Deals found on 2/8

Showing 1-10 of 30 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 23h 20m. 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
Hounslow
Milton Keynes
Gatwick
Luton
Wembley
Slough
Ilford
Hayes
Croydon
Colchester
Eastbourne
Brentford
Northampton
Watford
Swindon
Southend-on-Sea
Enfield
Kingston upon Thames
Southall
Poole

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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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