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

American Airlines and United Airlines can get you from London Heathrow Airport to Saint Lucia in just under 26h 04m. Your travel time can differ by up to 4h 46m. 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.

£465+ 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 28 October 2026.

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£646

Thu 5/1115:00 -

1 stop29h 40m

Wed 10/217:35 -

1 stop32h 55m

Deal found 27/10£647

Sun 8/1111:10 -

1 stop33h 30m

Mon 16/1117:35 -

1 stop34h 55m

Deal found 28/10£649

Thu 5/1111:10 -

1 stop33h 30m

Sun 7/217:35 -

1 stop34h 55m

Deal found 28/10£651

Sun 1/1113:00 -

2 stops31h 40m

Sun 15/1117:35 -

2 stops33h 35m

Deal found 26/10£655

Sun 6/1210:35 -

1 stop12h 25m

Wed 9/1215:45 -

1 stop12h 45m

Deal found 28/10£779

Sat 5/1210:35 -

1 stop12h 25m

Fri 18/1215:45 -

1 stop12h 45m

Deal found 24/10£782

Tue 8/1210:35 -

1 stop12h 25m

Tue 15/1215:45 -

1 stop12h 45m

Deal found 24/10£833

Sun 8/1114:45 -

1 stop32h 10m

Sun 7/215:45 -

1 stop15h 10m

Deal found 28/10£841

Thu 3/1218:00 -

2 stops29h 00m

Wed 16/1212:35 -

2 stops18h 45m

Deal found 23/10£844

Sun 22/1108:00 -

1 stop15h 00m

Sun 29/1115:45 -

1 stop15h 10m

Deal found 24/10£878

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 28 October 2026.

Mon 9/1117:00 -

2 stops26h 04m

Wed 18/1116:07 -

1 stop15h 53m

Deal found 23/10£714

Sun 6/1210:35 -

1 stop12h 25m

Sun 20/1215:45 -

1 stop12h 45m

Deal found 28/10£779

Fri 6/1113:35 -

1 stop30h 50m

Sat 13/217:17 -

1 stop24h 03m

Deal found 27/10£982

Tue 3/1110:50 -

1 stop32h 22m

Tue 10/1116:25 -

1 stop15h 15m

Deal found 27/10£988

Sun 13/1213:00 -

3 stops31h 40m

Sun 20/1217:35 -

3 stops33h 35m

Deal found 24/10£1,241

Thu 5/1110:00 -

2 stops33h 12m

Tue 9/216:35 -

1 stop33h 50m

Deal found 27/10£1,262

Fri 20/1111:45 -

1 stop31h 45m

Fri 27/1115:56 -

2 stops23h 04m

Deal found 24/10£749

Sun 6/1210:35 -

1 stop12h 25m

Wed 9/1215:45 -

1 stop12h 45m

Deal found 28/10£779

Sat 5/1210:35 -

1 stop12h 25m

Fri 18/1215:45 -

1 stop12h 45m

Deal found 25/10£782

Thu 10/1218:05 -

2 stops25h 19m

Thu 17/1215:47 -

1 stop16h 18m

Deal found 26/10£814

Wed 17/210:35 -

1 stop12h 25m

Wed 3/315:45 -

1 stop12h 45m

Deal found 28/10£790

Thu 3/1220:10 -

2 stops22h 54m

Wed 16/1216:26 -

2 stops34h 39m

Deal found 26/10£1,219

Thu 3/1220:35 -

2 stops45h 21m

Wed 16/1216:55 -

2 stops37h 55m

Deal found 23/10£1,026

Tue 8/1206:25 -

2 stops37h 06m

Tue 15/1216:55 -

2 stops41h 20m

Deal found 23/10£1,058

Thu 25/314:45 -

1 stop28h 30m

Mon 5/412:35 -

1 stop13h 45m

Deal found 23/10£1,135

Sat 6/312:25 -

3 stops30h 05m

Tue 16/311:45 -

3 stops24h 50m

Deal found 24/10£1,270

Find flight deals from Heathrow to Saint Lucia

Round-trip from	£645
One-way from	£465

Air Canada
25/11-2/12
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

Sat 14/11

08:05-16:12

1 stop36h 07m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£466

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

£505

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sun 15/11

19:55-14:55

3 stops47h 00m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£539

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Thu 5/11

13:25-16:40

2 stops31h 15m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£561

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

£562

LondonCastries

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

LHRSLU

London Heathrow

Sun 28/2

09:00-16:05

3 stops35h 05m

Castries George F. L. Charle

Wed 31/12

00:00-05:00

Nonstop0h 00m

£573

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sat 31/10

13:00-14:55

2 stops29h 55m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£577

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Sat 31/10

18:00-16:40

1 stop26h 40m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£587

LondonCastries

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

LHRSLU

London Heathrow

Fri 13/11

20:50-14:30

3 stops45h 40m

Castries George F. L. Charle

Wed 31/12

00:00-05:00

Nonstop0h 00m

£618

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Thu 5/11

12:25-16:40

3 stops32h 15m

Castries Hewanorra

Wed 31/12

00:00-05:00

Nonstop0h 00m

£639

Flights are sorted by cheapest return flights first.

Deals found on 26/10

Showing 1-10 of 31 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 £586). Flying from London Heathrow Airport to Saint Lucia in June is currently the most expensive (average of £1,011). 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

12,201 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

12,201 reviews

American Airlines

7.0

Good

12,201 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

8,274 reviews

American Airlines

7.0

Good

12,201 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 and United Airlines can get you from London Heathrow Airport to Saint Lucia in just under 26h 04m. Your travel time can differ by up to 4h 46m. 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 £586). Flying from London Heathrow Airport to Saint Lucia in June is currently the most expensive (average of £1,011). 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

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Popular flights

Alternative routes for Heathrow to Saint Lucia

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Gatwick to Basseterre flights

Top 2 airlines flying from Heathrow to Saint Lucia

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£510	Average£761	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£575	Average£868	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 £465

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 28 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 28 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 28 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 28 October 2026.

Last-minute flights from Heathrow to Saint LuciaDiscover last-minute flight deals from Heathrow to Saint Lucia. Data last updated 28 October 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Saint Lucia. Data last updated 28 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 28 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 28 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 28 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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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 28 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 28 October 2026.

Last-minute flights from Heathrow to Saint Lucia
Discover last-minute flight deals from Heathrow to Saint Lucia. Data last updated 28 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 28 October 2026.