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

American Airlines can get you from London Heathrow Airport to Saint Lucia in just under 24h 29m. Your travel time can differ by up to . The distance between London Heathrow Airport and Saint Lucia is about 4217 mi.

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.

£464+ 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 30 October 2026.

Wed 18/1118:00 -

1 stop26h 40m

Wed 2/1217:35 -

1 stop32h 55m

Deal found 28/10£643

Wed 25/1118:00 -

1 stop26h 40m

Wed 2/1217:35 -

1 stop32h 55m

Deal found 26/10£645

Sun 8/1118:00 -

1 stop26h 40m

Sun 7/217:35 -

1 stop32h 55m

Deal found 28/10£645

Thu 5/1115:00 -

1 stop29h 40m

Wed 10/217:35 -

1 stop32h 55m

Deal found 27/10£646

Sun 8/1111:10 -

1 stop33h 30m

Mon 16/1117:35 -

1 stop34h 55m

Deal found 28/10£648

Thu 5/1111:10 -

1 stop33h 30m

Sun 7/217:35 -

1 stop34h 55m

Deal found 28/10£650

Wed 18/1106:00 -

2 stops38h 40m

Wed 2/1217:35 -

2 stops23h 25m

Deal found 28/10£651

Wed 9/1211:10 -

1 stop33h 30m

Wed 20/117:35 -

2 stops23h 25m

Deal found 29/10£654

Sun 1/1113:00 -

2 stops31h 40m

Sun 15/1117:35 -

2 stops33h 35m

Deal found 26/10£654

Sun 6/1210:35 -

1 stop12h 25m

Thu 10/1215:45 -

1 stop12h 45m

Deal found 29/10£777

Sun 6/1210:35 -

1 stop12h 25m

Sun 20/1215:45 -

1 stop12h 45m

Deal found 28/10£778

Sat 5/1210:35 -

1 stop12h 25m

Fri 18/1215:45 -

1 stop12h 45m

Deal found 25/10£781

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 30 October 2026.

Thu 3/1219:10 -

2 stops24h 29m

Wed 23/1215:47 -

1 stop15h 43m

Deal found 30/10£750

Sun 6/1210:35 -

1 stop12h 25m

Thu 10/1215:45 -

1 stop12h 45m

Deal found 29/10£777

Thu 3/1220:10 -

2 stops22h 54m

Wed 16/1216:26 -

2 stops34h 39m

Deal found 26/10£1,217

Sat 13/214:05 -

2 stops29h 00m

Sat 20/216:25 -

2 stops20h 35m

Deal found 29/10£1,318

Sun 6/1210:35 -

1 stop12h 25m

Wed 9/1215:45 -

1 stop12h 45m

Deal found 29/10£777

Thu 3/1211:15 -

1 stop30h 17m

Tue 22/1213:58 -

1 stop17h 32m

Deal found 30/10£807

Sun 6/1210:35 -

1 stop12h 25m

Sun 20/1215:45 -

1 stop12h 45m

Deal found 28/10£778

Sat 5/1210:35 -

1 stop12h 25m

Fri 18/1215:45 -

1 stop12h 45m

Deal found 25/10£781

Wed 17/210:35 -

1 stop12h 25m

Wed 3/315:45 -

1 stop12h 45m

Deal found 29/10£788

Mon 14/1219:10 -

2 stops24h 31m

Mon 21/1213:58 -

2 stops18h 02m

Deal found 30/10£988

Tue 5/113:25 -

1 stop26h 40m

Wed 13/115:45 -

1 stop12h 45m

Deal found 28/10£799

Tue 16/208:40 -

2 stops34h 25m

Thu 25/216:25 -

2 stops20h 35m

Deal found 25/10£1,340

Fri 5/212:40 -

1 stop30h 26m

Sat 27/315:20 -

1 stop15h 00m

Deal found 25/10£1,340

Thu 14/116:00 -

2 stops47h 31m

Sat 23/112:51 -

2 stops40h 54m

Deal found 30/10£1,003

Thu 10/1216:30 -

2 stops49h 28m

Tue 22/1217:06 -

2 stops43h 14m

Deal found 28/10£1,174

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£643
One-way from	£464

Air Canada
18/11-2/12
2 total stops
59h 35m total
London to Saint Lucia

Search Deals

8/11-31/12
2 total stops
51h 25m 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 16/11

08:05-16:12

1 stop36h 07m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£465

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Fri 13/11

08:05-15:55

1 stop35h 50m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£465

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sun 8/11

15:30-14:55

3 stops51h 25m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£466

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sun 15/11

11:30-14:55

2 stops55h 25m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£493

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Mon 16/11

06:00-14:55

2 stops36h 55m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£504

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sat 12/12

16:20-10:10

3 stops45h 50m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£552

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sun 15/11

18:00-16:40

1 stop26h 40m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£561

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Wed 18/11

18:00-16:40

1 stop26h 40m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£566

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

£587

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Tue 2/2

14:50-14:55

2 stops52h 05m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£600

Flights are sorted by cheapest return flights first.

Deals found on 26/10

Showing 1-10 of 34 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 £585). Flying from London Heathrow Airport to Saint Lucia in June is currently the most expensive (average of £1,010). 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

12,210 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

12,210 reviews

American Airlines

7.0

Good

12,210 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

8,275 reviews

American Airlines

7.0

Good

12,210 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?
American Airlines can get you from London Heathrow Airport to Saint Lucia in just under 24h 29m. Your travel time can differ by up to . The distance between London Heathrow Airport and Saint Lucia is about 4217 mi.
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 £585). Flying from London Heathrow Airport to Saint Lucia in June is currently the most expensive (average of £1,010). 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

Alternative routes

Complete your trip

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Popular flights

Alternative routes for Heathrow to Saint Lucia

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Stansted to Nassau flights

London City to Santo Domingo flights

Top 2 airlines flying from Heathrow to Saint Lucia

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£509	Average£760	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£574	Average£866	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 £464

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/11. 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 30 October 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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from Heathrow to Saint LuciaDiscover last-minute flight deals from Heathrow to Saint Lucia. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Saint Lucia. Data last updated 30 October 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 30 October 2026.

Search for one-way flight options from Heathrow to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated 30 October 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 30 October 2026.

Popular flight searches

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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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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 30 October 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 30 October 2026.

Last-minute flights from Heathrow to Saint Lucia
Discover last-minute flight deals from Heathrow to Saint Lucia. Data last updated 30 October 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 30 October 2026.