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

Air Canada and Delta can get you from London Heathrow Airport to Saint Lucia in just under 33h 04m. Your travel time can differ by up to 26h 36m. The distance between London Heathrow Airport and Saint Lucia is about 4217 mi. Both multi-stop and direct flights can be found to your destination and back.

What is the cheapest time of day to fly from LHR to LC?

When flying from London Heathrow Airport to Saint Lucia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

£459+ Cheap Flights from London Heathrow Airport to Saint Lucia

Cheap flight deals from Heathrow to Saint Lucia

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 11 November 2026.

Thu 3/1215:00 -

1 stop29h 40m

Wed 9/1217:35 -

1 stop34h 55m

Deal found 10/11£643

Tue 1/1218:00 -

1 stop26h 40m

Thu 10/1217:35 -

1 stop34h 55m

Deal found 10/11£644

Tue 1/1206:00 -

2 stops38h 40m

Thu 10/1217:35 -

1 stop34h 55m

Deal found 10/11£651

Sun 15/1113:00 -

2 stops31h 40m

Sun 22/1117:35 -

1 stop34h 55m

Deal found 10/11£666

Sun 6/1210:35 -

1 stop12h 25m

Tue 22/1215:45 -

1 stop12h 45m

Deal found 9/11£678

Wed 9/1218:00 -

1 stop26h 40m

Wed 27/117:35 -

1 stop34h 55m

Deal found 8/11£691

Sun 13/1212:10 -

1 stop31h 31m

Sun 17/116:38 -

1 stop15h 27m

Deal found 8/11£700

Mon 7/1213:20 -

1 stop26h 45m

Mon 21/1215:45 -

1 stop12h 45m

Deal found 10/11£705

Tue 8/1210:35 -

1 stop12h 25m

Tue 15/1215:45 -

1 stop12h 45m

Deal found 8/11£716

Sun 6/1210:35 -

1 stop12h 25m

Sun 20/1215:45 -

1 stop12h 45m

Deal found 7/11£719

Fri 4/1214:45 -

1 stop25h 20m

Thu 17/1215:45 -

1 stop12h 10m

Deal found 8/11£729

Mon 7/1213:20 -

1 stop26h 45m

Wed 23/1215:45 -

1 stop12h 45m

Deal found 9/11£734

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 11 November 2026.

Wed 3/310:35 -

1 stop29h 30m

Wed 10/315:45 -

1 stop12h 45m

Deal found 10/11£713

Fri 12/209:00 -

2 stops59h 40m

Sun 21/217:35 -

1 stop34h 55m

Deal found 8/11£727

Mon 30/1110:00 -

2 stops33h 04m

Tue 8/1216:26 -

1 stop15h 14m

Deal found 6/11£1,028

Mon 28/1216:40 -

2 stops49h 35m

Sat 23/117:17 -

2 stops33h 23m

Deal found 7/11£1,203

Mon 30/1110:00 -

2 stops33h 04m

Wed 9/1216:26 -

1 stop33h 59m

Deal found 6/11£1,215

Sun 6/1210:35 -

1 stop12h 25m

Sun 20/1215:45 -

1 stop12h 45m

Deal found 7/11£719

Wed 17/210:35 -

1 stop12h 25m

Wed 3/315:45 -

1 stop12h 45m

Deal found 7/11£732

Mon 7/1213:20 -

1 stop26h 45m

Wed 23/1215:45 -

1 stop12h 45m

Deal found 9/11£734

Fri 22/110:35 -

1 stop12h 25m

Sat 6/215:45 -

1 stop12h 45m

Deal found 9/11£735

Sun 6/1220:10 -

2 stops22h 54m

Tue 22/1216:56 -

2 stops34h 09m

Deal found 10/11£1,077

Sat 16/113:25 -

1 stop29h 50m

Sat 23/115:45 -

1 stop12h 45m

Deal found 8/11£742

Mon 30/1116:00 -

1 stop27h 04m

Mon 7/1216:26 -

1 stop15h 14m

Deal found 6/11£1,090

Wed 13/110:35 -

1 stop12h 25m

Wed 27/112:35 -

1 stop13h 15m

Deal found 7/11£764

Wed 30/1212:40 -

1 stop30h 56m

Fri 22/116:35 -

1 stop36h 25m

Deal found 7/11£1,416

Wed 16/1216:20 -

2 stops49h 55m

Sat 16/117:17 -

1 stop24h 03m

Deal found 8/11£1,430

Mon 14/1208:00 -

1 stop14h 55m

Mon 28/1215:45 -

1 stop15h 10m

Deal found 9/11£830

Sun 9/509:20 -

1 stop33h 50m

Sun 16/515:35 -

1 stop14h 45m

Deal found 9/11£1,433

Thu 3/1208:00 -

1 stop15h 00m

Thu 17/1212:35 -

2 stops23h 45m

Deal found 7/11£913

Sat 27/213:00 -

2 stops31h 40m

Sat 6/317:17 -

2 stops33h 53m

Deal found 7/11£958

Sat 30/117:50 -

3 stops50h 15m

Thu 11/213:20 -

3 stops25h 00m

Deal found 10/11£993

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£643
One-way from	£459

Air Canada
3/12-9/12
2 total stops
64h 35m total
London to Saint Lucia

Search Deals

JetBlue
25/1-31/12
1 total stop
31h 14m total
London to Saint Lucia

Search Deals

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 London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Mon 25/1

12:20-15:34

1 stop31h 14m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£459

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Wed 20/1

12:15-14:55

2 stops30h 40m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£466

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Tue 12/1

08:50-15:34

2 stops34h 44m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£527

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Wed 14/4

06:00-13:55

2 stops36h 55m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£538

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sat 6/2

18:00-16:40

1 stop26h 40m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£586

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sun 31/1

14:50-14:55

2 stops52h 05m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£601

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sat 6/2

14:50-16:40

3 stops29h 50m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£607

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Mon 16/11

13:00-14:55

2 stops29h 55m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£646

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sat 16/1

18:00-16:40

1 stop26h 40m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£653

LondonCastries

LHR London Heathrow - SLU Castries George F. L. Charle

LHRSLU

London Heathrow

Mon 16/11

18:00-08:10

2 stops18h 10m

Castries George F. L. Charle

Wed 31/12

00:00-05:00

Nonstop0h 00m

£678

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Showing 1-10 of 41 resultsSorted by cheapest first

...

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-UVF

LHR-SLU

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-UVF

LHR-SLU

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 £583). Flying from London Heathrow Airport to Saint Lucia in June is currently the most expensive (average of £1,005). 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 American Airlines and British Airways 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.

American Airlines

7.0

Good

12,228 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Ron,Aug 2026

LHR - LAX

Unfortunately it took an hour and 15 minutes for luggage to get to customs so I had to pay for hotel and other ticket to get home Missed flight

American Airlines

7.0

Good

12,228 reviews

American Airlines

7.0

Good

12,228 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Ron,Aug 2026

LHR - LAX

Unfortunately it took an hour and 15 minutes for luggage to get to customs so I had to pay for hotel and other ticket to get home Missed flight

British Airways

6.7

Okay

8,285 reviews

American Airlines

7.0

Good

12,228 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Ron,Aug 2026

LHR - LAX

Unfortunately it took an hour and 15 minutes for luggage to get to customs so I had to pay for hotel and other ticket to get home Missed flight

Related info for your journey

How long is the flight from London Heathrow Airport to Saint Lucia?
Air Canada and Delta can get you from London Heathrow Airport to Saint Lucia in just under 33h 04m. Your travel time can differ by up to 26h 36m. The distance between London Heathrow Airport and Saint Lucia is about 4217 mi. Both multi-stop and direct flights can be found to your destination and back.
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 £583). Flying from London Heathrow Airport to Saint Lucia in June is currently the most expensive (average of £1,005). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Saint Lucia

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Top 2 airlines flying from Heathrow to Saint Lucia

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£507	Average£729	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£675	Average£863	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

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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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Cheap flights from London Heathrow Airport to Saint Lucia from £459

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Saint Lucia

Cheapest flights from Heathrow to Saint LuciaExplore 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 11 November 2026.

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 11 November 2026.

Best flights from Heathrow to Saint LuciaDiscover 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 11 November 2026.

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 11 November 2026.

Last-minute flights from Heathrow to Saint LuciaDiscover last-minute flight deals from Heathrow to Saint Lucia. Data last updated 11 November 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Saint Lucia. Data last updated 11 November 2026 and is based on user searches.

One-way flights from Heathrow to Saint LuciaSearch for one-way flight options from Heathrow to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated 11 November 2026.

Search for one-way flight options from Heathrow to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated 11 November 2026.

Find flight deals from Heathrow to Saint Lucia

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Saint Lucia that are best for you.

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.

Cheapflights Insights

What is the cheapest month to book a flight from London Heathrow Airport to Saint Lucia?

Reviews of airlines servicing Saint Lucia

Related info for your journey

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

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

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

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

What is the cheapest month to book a flight from London Heathrow Airport to Saint Lucia?

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.

Alternative routes for Heathrow to Saint Lucia

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Saint Lucia by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Heathrow to Saint Lucia by cabin class

Find flights from Heathrow to Saint Lucia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and Saint Lucia flights

Browse other Heathrow and Saint Lucia flight options. Last updated on 11 November 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 2 airlines flying from Heathrow to Saint Lucia

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

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

Can Cheapflights 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?

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Travel Smart

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 11 November 2026.

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 11 November 2026.

Last-minute flights from Heathrow to Saint Lucia
Discover last-minute flight deals from Heathrow to Saint Lucia. Data last updated 11 November 2026 and is based on user searches.

One-way flights from Heathrow to Saint Lucia
Search for one-way flight options from Heathrow to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated 11 November 2026.