Find flights
When to book
FAQs

Cheap flights from Saint Lucia to London Heathrow Airport from £349

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
UVF — LHR
9 Aug — 16 Aug1
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 10 July 2026.

Sun 1/1117:40
UVF
-
LHR
2 stops23h 20m
Air Canada
Sat 7/1115:00
LHR
-
UVF
1 stop29h 40m
Air Canada
Deal found 8/7£817
Fri 25/916:25
UVF
-
LHR
2 stops17h 35m
Multiple Airlines
Sat 3/1009:50
LHR
-
UVF
2 stops34h 30m
Multiple Airlines
Deal found 5/7£818
Fri 11/915:10
UVF
-
LHR
1 stop15h 40m
Air Canada
Thu 8/1006:00
LHR
-
UVF
2 stops37h 15m
Air Canada
Deal found 7/7£824
Sun 8/1117:40
UVF
-
LHR
1 stop34h 50m
Air Canada
Wed 25/1115:00
LHR
-
UVF
1 stop29h 40m
Air Canada
Deal found 7/7£836
Mon 10/816:17
UVF
-
LHR
1 stop23h 28m
Multiple Airlines
Mon 24/809:15
LHR
-
UVF
2 stops33h 34m
Multiple Airlines
Deal found 9/7£858
Sun 8/1117:40
UVF
-
LHR
2 stops32h 50m
Air Canada
Thu 26/1118:00
LHR
-
UVF
2 stops26h 40m
Air Canada
Deal found 7/7£898
Sat 26/1215:45
SLU
-
LHR
1 stop12h 45m
Multiple Airlines
Wed 30/1210:35
LHR
-
SLU
1 stop12h 25m
Multiple Airlines
Deal found 5/7£1,072
Thu 10/917:50
SLU
-
LHR
3 stops34h 15m
Multiple Airlines
Wed 30/909:50
LHR
-
SLU
3 stops32h 20m
Multiple Airlines
Deal found 5/7£1,091
Tue 15/912:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Thu 17/910:45
LHR
-
SLU
1 stop13h 15m
Multiple Airlines
Deal found 9/7£1,144
Thu 10/912:35
SLU
-
LHR
1 stop12h 15m
Multiple Airlines
Wed 7/1011:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Deal found 7/7£1,181
Sun 2/809:15
SLU
-
LHR
1 stop16h 00m
Multiple Airlines
Thu 20/810:45
LHR
-
SLU
1 stop13h 15m
Multiple Airlines
Deal found 8/7£1,242
Sat 22/812:35
SLU
-
LHR
1 stop12h 40m
Multiple Airlines
Sat 29/811:10
LHR
-
SLU
1 stop12h 50m
Multiple Airlines
Deal found 8/7£1,279

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 10 July 2026.

Round-trip from

£817

One-way from

£349
Air Canada
  • Air Canada
  • 1/11-7/11
  • 3 total stops
  • 53h 00m total
  • Saint Lucia to London
Search Deals
10/9
  • 10/9
  • 2 total stops
  • 34h 40m 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 10 July 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

Mon 10/8

16:17-20:45

1 stop23h 28m

London Heathrow

Mon 24/8

09:15-13:49

2 stops33h 34m

£858

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Thu 10/9

16:25-16:00

2 stops42h 35m

London Heathrow

Wed 30/9

22:40-15:20

2 stops45h 40m

£940

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sun 2/8

16:40-20:45

1 stop23h 05m

London Heathrow

Thu 20/8

11:55-12:39

1 stop29h 44m

£1,059

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 25/9

16:25-21:05

2 stops47h 40m

London Heathrow

Sat 3/10

22:40-15:20

2 stops45h 40m

£1,067
Fastest return journey

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Sat 26/12

15:45-08:30

1 stop12h 45m

London Heathrow

Wed 30/12

10:35-19:00

1 stop12h 25m

£1,072

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Thu 10/9

17:50-09:05

3 stops34h 15m

London Heathrow

Wed 30/9

09:50-13:10

3 stops32h 20m

£1,091

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Thu 10/9

16:25-20:45

1 stop23h 20m

London Heathrow

Wed 30/9

08:40-15:20

2 stops35h 40m

£1,109

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 25/9

16:25-20:45

1 stop23h 20m

London Heathrow

Sat 3/10

08:15-15:20

1 stop36h 05m

£1,138

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Tue 15/9

12:35-06:15

1 stop12h 40m

London Heathrow

Thu 17/9

10:45-19:00

1 stop13h 15m

£1,144

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Sun 2/8

09:15-06:15

1 stop16h 00m

London Heathrow

Thu 20/8

10:45-19:00

1 stop13h 15m

£1,242

Flights are sorted by cheapest return flights first.

Deals found on 7/7

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3

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 18h 08m. Saint Lucia and London Heathrow Airport are separated by a distance of 4217 mi.

  • 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
Luton
Wembley
Gatwick
Slough
Croydon
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
Kingston upon Thames
Eastbourne
Swindon
Poole
Southall
Aylesbury
Romford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.