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

Departing from Saint Lucia to London Heathrow Airport will take you 23h 06m. Saint Lucia and London Heathrow Airport are separated by a distance of 4217 mi.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Saint Lucia to London Heathrow Airport as you normally would.

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.

£337+ Cheap Flights from Saint Lucia to London Heathrow Airport

Cheap flight deals from Saint Lucia to Heathrow

Enter your travel dates to find the best prices.

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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 6 September 2026.

Wed 21/1016:39 -

1 stop23h 06m

Wed 28/1007:25 -

1 stop35h 47m

Deal found 6/9£724

Mon 19/1016:39 -

1 stop35h 51m

Mon 26/1008:05 -

1 stop35h 07m

Deal found 4/9£794

Wed 23/916:39 -

1 stop23h 06m

Wed 30/911:55 -

1 stop32h 39m

Deal found 5/9£821

Fri 25/916:39 -

1 stop23h 06m

Sat 3/1008:15 -

1 stop36h 19m

Deal found 2/9£841

Wed 21/1016:39 -

1 stop23h 06m

Wed 28/1012:10 -

2 stops55h 30m

Deal found 6/9£870

Sun 25/1014:55 -

2 stops27h 45m

Fri 30/1013:00 -

2 stops55h 40m

Deal found 5/9£885

Sun 25/1015:45 -

1 stop12h 10m

Fri 30/1008:00 -

1 stop15h 00m

Deal found 5/9£918

Tue 15/909:10 -

1 stop16h 05m

Sun 20/911:10 -

1 stop12h 50m

Deal found 5/9£1,626

Find flight deals from Saint Lucia to Heathrow

Round-trip from	£724
One-way from	£337

JetBlue
21/10-28/10
2 total stops
58h 53m total
Saint Lucia to London

Search Deals

JetBlue
14/1-31/12
1 total stop
23h 31m total
Saint Lucia to London

Search Deals

Cheapflights Fare Finder

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

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Cheapest return flight

CastriesLondon

UVF Castries Hewanorra - LHR London Heathrow

UVFLHR

Castries Hewanorra

Thu 14/1

17:21-20:52

1 stop23h 31m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£337

CastriesLondon

UVF Castries Hewanorra - LHR London Heathrow

UVFLHR

Castries Hewanorra

Sat 12/12

15:50-12:50

2 stops41h 00m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£375

CastriesLondon

UVF Castries Hewanorra - LHR London Heathrow

UVFLHR

Castries Hewanorra

Sat 12/12

13:35-09:30

1 stop15h 55m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£393

CastriesLondon

UVF Castries Hewanorra - LHR London Heathrow

UVFLHR

Castries Hewanorra

Sun 13/12

16:55-21:40

1 stop24h 45m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£408

CastriesLondon

UVF Castries Hewanorra - LHR London Heathrow

UVFLHR

Castries Hewanorra

Mon 15/2

16:51-20:45

1 stop23h 54m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£425

CastriesLondon

UVF Castries Hewanorra - LHR London Heathrow

UVFLHR

Castries Hewanorra

Sun 13/12

17:40-07:10

3 stops33h 30m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£460

CastriesLondon

UVF Castries Hewanorra - LHR London Heathrow

UVFLHR

Castries Hewanorra

Sun 13/12

17:40-07:20

2 stops33h 40m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£475

CastriesLondon

UVF Castries Hewanorra - LHR London Heathrow

UVFLHR

Castries Hewanorra

Sun 14/2

17:40-07:10

2 stops33h 30m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£516

CastriesLondon

UVF Castries Hewanorra - LHR London Heathrow

UVFLHR

Castries Hewanorra

Mon 15/2

17:40-07:10

2 stops33h 30m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£516

CastriesLondon

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

SLULHR

Castries George F. L. Charle

Sun 13/12

05:00-10:50

3 stops25h 50m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£558

Flights are sorted by cheapest return flights first.

Deals found on 6/9

Showing 1-10 of 24 resultsSorted by cheapest first

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.

UVF-LHR

SLU-LHR

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

LC0-LHR

UVF-LHR

SLU-LHR

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Saint Lucia to London Heathrow Airport?
Departing from Saint Lucia to London Heathrow Airport will take you 23h 06m. 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

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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?

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Cheap flights from Saint Lucia to London Heathrow Airport from £337

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Saint Lucia to Heathrow

Cheapest flights from Saint Lucia to HeathrowExplore 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 6 September 2026.

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 6 September 2026.

Best flights from Saint Lucia to HeathrowDiscover carefully curated flight deals from Saint Lucia to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 September 2026.

Discover carefully curated flight deals from Saint Lucia to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 September 2026.

Last-minute flights from Saint Lucia to HeathrowDiscover last-minute flight deals from Saint Lucia to Heathrow. Data last updated 6 September 2026 and is based on user searches.

Discover last-minute flight deals from Saint Lucia to Heathrow. Data last updated 6 September 2026 and is based on user searches.

One-way flights from Saint Lucia to HeathrowSearch for one-way flight options from Saint Lucia to Heathrow. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

Search for one-way flight options from Saint Lucia to Heathrow. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

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Best time to book a flight from Saint Lucia to Heathrow

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Cheapflights Insights

Related info for your journey

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

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

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

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

Travelling to a place near London Heathrow Airport?

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 Saint Lucia to Heathrow

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Complete your trip

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

Direct flights to England

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Search flights from Saint Lucia to Heathrow by cabin class

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Other flights to Heathrow

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Can Cheapflights notify me if prices for flights from Saint Lucia to Heathrow become cheaper?

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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 6 September 2026.

Best flights from Saint Lucia to Heathrow
Discover carefully curated flight deals from Saint Lucia to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 September 2026.

Last-minute flights from Saint Lucia to Heathrow
Discover last-minute flight deals from Saint Lucia to Heathrow. Data last updated 6 September 2026 and is based on user searches.

One-way flights from Saint Lucia to Heathrow
Search for one-way flight options from Saint Lucia to Heathrow. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.