Find flights
When to book
FAQs

Cheap flights from Saint Lucia to London Heathrow Airport from £483

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
UVF — LHR
9 Jun — 16 Jun1
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 May 2026.

Tue 18/815:15
UVF
-
LHR
1 stop15h 35m
Air Canada
Wed 16/917:15
LHR
-
UVF
2 stops50h 00m
Air Canada
Deal found 10/5£889
Tue 26/515:05
UVF
-
LHR
1 stop15h 45m
Air Canada
Sun 31/509:30
LHR
-
UVF
2 stops57h 40m
Air Canada
Deal found 8/5£900
Fri 21/815:15
UVF
-
LHR
1 stop34h 20m
Air Canada
Wed 9/914:10
LHR
-
UVF
2 stops53h 05m
Air Canada
Deal found 10/5£904
Fri 21/815:15
UVF
-
LHR
2 stops37h 45m
Air Canada
Thu 10/912:40
LHR
-
UVF
2 stops30h 35m
Air Canada
Deal found 10/5£926
Tue 12/515:05
UVF
-
LHR
1 stop15h 45m
Multiple Airlines
Fri 29/509:30
LHR
-
UVF
2 stops31h 40m
Multiple Airlines
Deal found 9/5£950
Fri 21/815:15
UVF
-
LHR
2 stops24h 45m
Air Canada
Wed 16/918:00
LHR
-
UVF
2 stops49h 15m
Air Canada
Deal found 10/5£961
Sun 20/916:00
UVF
-
LHR
2 stops22h 45m
American Airlines
Sun 4/1015:35
LHR
-
UVF
1 stop28h 55m
American Airlines
Deal found 10/5£974
Sun 24/505:00
SLU
-
LHR
3 stops35h 00m
Multiple Airlines
Sun 7/609:30
LHR
-
SLU
3 stops35h 05m
Multiple Airlines
Deal found 7/5£1,265
Wed 12/810:15
SLU
-
LHR
2 stops28h 55m
Multiple Airlines
Thu 20/809:35
LHR
-
SLU
1 stop14h 25m
Multiple Airlines
Deal found 8/5£1,462

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 May 2026.

Round-trip from

£889

One-way from

£483
Air Canada
  • Air Canada
  • 18/8-16/9
  • 3 total stops
  • 65h 35m total
  • Saint Lucia to London
Search Deals
20/8
  • 20/8
  • 2 total stops
  • 23h 09m 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 May 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

Tue 26/5

15:05-11:50

1 stop15h 45m

London Heathrow

Sun 31/5

09:30-14:10

2 stops57h 40m

£900

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 17/7

15:05-08:35

2 stops36h 30m

London Heathrow

Thu 6/8

09:30-14:20

2 stops33h 50m

£1,059

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 17/7

15:05-21:00

2 stops24h 55m

London Heathrow

Fri 31/7

14:10-15:31

2 stops30h 21m

£1,119

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sun 21/6

14:30-18:55

2 stops23h 25m

London Heathrow

Sun 28/6

14:05-14:20

2 stops53h 15m

£1,234

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Sun 24/5

05:00-21:00

3 stops35h 00m

London Heathrow

Sun 7/6

09:30-15:35

3 stops35h 05m

£1,265

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sat 18/7

16:22-05:55

1 stop32h 33m

London Heathrow

Fri 7/8

14:10-15:31

1 stop30h 21m

£1,359

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sat 18/7

16:22-20:40

1 stop23h 18m

London Heathrow

Thu 6/8

16:40-12:10

2 stops48h 30m

£1,359
Fastest return journey

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Wed 12/8

10:15-20:10

2 stops28h 55m

London Heathrow

Thu 20/8

09:35-19:00

1 stop14h 25m

£1,462
Cheapest one-way

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Thu 20/8

16:11-20:20

2 stops23h 09m

£483

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Sun 24/5

18:00-11:55

3 stops36h 55m

£535

Flights are sorted by cheapest return flights first.

Deals found on 8/5

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 15h 45m. 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
Milton Keynes
Hounslow
Croydon
Wembley
Northampton
Luton
Gatwick
Ilford
Slough
Hayes
Brentford
Colchester
Romford
Watford
Kingston upon Thames
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

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.