How long is the flight from London to Saint Lucia?

For as low as £570, British Airways can have you in Saint Lucia from London in 8h 50m. The distance between London and Saint Lucia is about 4223 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the most popular routes from London to Saint Lucia?

The most popular route from London to Saint Lucia is London Heathrow - Castries Hewanorra. You may also consider London Gatwick - Castries Hewanorra or London City - Castries Hewanorra.

What are the most popular airlines that fly from London to Saint Lucia?

British Airways, American Airlines and Air Canada are the most popular airlines when flying from London to Saint Lucia.

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

Yes. In addition to deals on London to Saint Lucia flights, Cheapflights offers holiday packages that include both flights and hotel.

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

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Saint Lucia.

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

Yes. Cheapflights offers flight deals from London 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.

£328+ Cheap Flights from London to Saint Lucia

Cheap flight deals from London to Saint Lucia

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from London to Saint Lucia
Explore the most affordable flight options available from London to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Mon 5/1011:15 -

Nonstop8h 50m

Mon 12/1022:05 -

Nonstop8h 20m

Deal found 21/8£544

Thu 1/1011:15 -

Nonstop8h 50m

Mon 30/1119:05 -

Nonstop8h 15m

Deal found 19/8£547

Tue 1/1212:30 -

Nonstop9h 05m

Wed 16/1219:20 -

Nonstop8h 15m

Deal found 18/8£547

Sun 20/911:15 -

Nonstop8h 45m

Tue 20/1020:30 -

Nonstop8h 20m

Deal found 18/8£549

Sun 4/1011:15 -

Nonstop8h 50m

Sun 18/1020:30 -

Nonstop8h 20m

Deal found 21/8£550

Fri 25/1213:15 -

Nonstop9h 05m

Sat 26/1219:20 -

Nonstop8h 15m

Deal found 21/8£552

Mon 14/911:15 -

Nonstop8h 45m

Mon 28/922:00 -

Nonstop8h 25m

Deal found 18/8£558

Thu 1/1011:15 -

Nonstop8h 50m

Sun 11/1020:30 -

Nonstop8h 20m

Deal found 20/8£558

Thu 17/911:15 -

Nonstop8h 45m

Thu 24/922:00 -

Nonstop8h 25m

Deal found 20/8£561

Mon 9/1112:15 -

Nonstop9h 05m

Mon 16/1119:05 -

Nonstop8h 15m

Deal found 18/8£563

Wed 23/911:55 -

1 stop32h 39m

Sat 26/916:25 -

1 stop36h 05m

Deal found 19/8£613

Thu 1/1008:15 -

1 stop36h 19m

Sun 11/1016:25 -

1 stop36h 05m

Deal found 20/8£645

Best flights from London to Saint Lucia
Discover carefully curated flight deals from London to Saint Lucia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Mon 5/1011:15 -

Nonstop8h 50m

Mon 7/622:05 -

Nonstop8h 20m

Deal found 17/8£570

Mon 26/1009:45 -

1 stop31h 57m

Mon 2/1116:01 -

2 stops23h 59m

Deal found 18/8£677

Wed 17/210:05 -

1 stop12h 55m

Wed 3/315:45 -

1 stop13h 20m

Deal found 19/8£689

Sun 20/908:15 -

1 stop36h 18m

Tue 20/1016:25 -

1 stop23h 20m

Deal found 18/8£763

Fri 2/1011:05 -

2 stops31h 26m

Sat 10/1014:35 -

2 stops35h 10m

Deal found 21/8£975

Mon 5/1010:00 -

2 stops33h 12m

Mon 12/1015:32 -

2 stops20h 08m

Deal found 21/8£985

Thu 10/910:00 -

2 stops33h 12m

Wed 23/915:32 -

2 stops20h 48m

Deal found 22/8£1,171

Mon 26/1012:15 -

Nonstop9h 05m

Fri 6/1120:05 -

Nonstop8h 15m

Deal found 21/8£599

Mon 5/1017:25 -

2 stops25h 17m

Mon 12/1015:20 -

1 stop15h 50m

Deal found 22/8£687

Fri 25/1210:05 -

1 stop12h 55m

Sat 26/1215:45 -

1 stop13h 20m

Deal found 21/8£717

Wed 17/210:35 -

1 stop12h 25m

Wed 3/315:45 -

1 stop12h 45m

Deal found 19/8£717

Wed 6/110:35 -

1 stop12h 25m

Thu 28/115:45 -

1 stop12h 45m

Deal found 20/8£720

Thu 24/1212:30 -

Nonstop9h 05m

Thu 7/119:20 -

Nonstop8h 15m

Deal found 20/8£828

Wed 23/911:10 -

1 stop29h 55m

Sat 26/912:35 -

1 stop12h 40m

Deal found 19/8£721

Fri 23/1008:00 -

2 stops34h 31m

Sat 31/1012:52 -

1 stop19h 08m

Deal found 18/8£976

Fri 11/1216:40 -

1 stop23h 50m

Sat 19/1213:37 -

1 stop16h 03m

Deal found 18/8£887

Sat 19/911:15 -

1 stop31h 57m

Mon 21/915:32 -

1 stop16h 43m

Deal found 21/8£1,030

Sun 17/113:25 -

1 stop26h 40m

Sun 24/112:35 -

1 stop13h 15m

Deal found 21/8£730

Tue 6/1010:00 -

2 stops33h 12m

Tue 13/1015:32 -

2 stops20h 08m

Deal found 22/8£1,042

Thu 10/910:45 -

1 stop13h 15m

Wed 23/912:35 -

1 stop12h 40m

Deal found 22/8£732

Wed 21/1009:20 -

2 stops33h 52m

Sun 15/1116:25 -

2 stops20h 10m

Deal found 20/8£1,260

Wed 16/915:15 -

1 stop27h 57m

Sat 19/915:32 -

1 stop16h 43m

Deal found 21/8£1,046

Wed 6/110:35 -

1 stop12h 25m

Fri 22/115:45 -

1 stop12h 45m

Deal found 20/8£736

Wed 4/1110:00 -

2 stops33h 12m

Thu 12/1116:25 -

2 stops22h 00m

Deal found 19/8£1,292

Wed 6/110:35 -

1 stop12h 25m

Fri 29/115:45 -

1 stop12h 45m

Deal found 20/8£736

Fri 2/1011:10 -

1 stop12h 50m

Fri 9/1012:35 -

1 stop12h 40m

Deal found 18/8£755

Mon 7/910:00 -

2 stops33h 12m

Wed 7/1015:32 -

2 stops23h 13m

Deal found 22/8£1,458

Mon 26/1010:00 -

2 stops32h 12m

Mon 2/1116:32 -

2 stops20h 03m

Deal found 19/8£1,353

Fri 23/1014:05 -

2 stops54h 35m

Sat 31/1016:17 -

2 stops34h 53m

Deal found 22/8£775

Mon 7/1208:40 -

2 stops34h 30m

Mon 14/1216:25 -

2 stops22h 00m

Deal found 17/8£1,471

Find flight deals from London to Saint Lucia

Round-trip from	£544
One-way from	£328
Good round-trip deal	£566 or less
Good one-way deal	£590 or less

British Airways
5/10-12/10
Nonstop
17h 10m total
London to Saint Lucia

Search Deals

17/10
1 total stop
30h 00m total
London to Saint Lucia

Search Deals

Price to beat on a round-trip flight from London (LON) to Saint Lucia.

Search Deals

Price to beat on a one-way flight from London (LON) to Saint Lucia.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

LondonCastries

LGW London Gatwick - UVF Castries Hewanorra

LGWUVF

London Gatwick

Mon 5/10

11:15-15:05

Nonstop8h 50m

Castries Hewanorra

Mon 7/6

22:05-11:25

Nonstop8h 20m

£570

LondonCastries

LGW London Gatwick - UVF Castries Hewanorra

LGWUVF

London Gatwick

Mon 26/10

12:15-17:20

Nonstop9h 05m

Castries Hewanorra

Fri 6/11

20:05-08:20

Nonstop8h 15m

£599

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Mon 26/10

09:45-13:42

1 stop31h 57m

Castries Hewanorra

Mon 2/11

16:01-20:00

2 stops23h 59m

£677

LondonCastries

LHR London Heathrow - UVF Castries Hewanorra

LHRUVF

London Heathrow

Mon 5/10

17:25-13:42

2 stops25h 17m

Castries Hewanorra

Mon 12/10

15:20-12:10

1 stop15h 50m

£687

LondonCastries

LGW London Gatwick - SLU Castries George F. L. Charle

LGWSLU

London Gatwick

Wed 17/2

10:05-19:00

1 stop12h 55m

Castries George F. L. Charle

Wed 3/3

15:45-09:05

1 stop13h 20m

£689

LondonCastries

LGW London Gatwick - SLU Castries George F. L. Charle

LGWSLU

London Gatwick

Fri 25/12

10:05-19:00

1 stop12h 55m

Castries George F. L. Charle

Sat 26/12

15:45-09:05

1 stop13h 20m

£717

LondonCastries

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

LHRSLU

London Heathrow

Wed 17/2

10:35-19:00

1 stop12h 25m

Castries George F. L. Charle

Wed 3/3

15:45-08:30

1 stop12h 45m

£717

LondonCastries

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

LHRSLU

London Heathrow

Wed 6/1

10:35-19:00

1 stop12h 25m

Castries George F. L. Charle

Thu 28/1

15:45-08:30

1 stop12h 45m

£720

LondonCastries

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

LHRSLU

London Heathrow

Wed 23/9

11:10-12:05

1 stop29h 55m

Castries George F. L. Charle

Sat 26/9

12:35-06:15

1 stop12h 40m

£721

LondonCastries

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

LHRSLU

London Heathrow

Sun 17/1

13:25-12:05

1 stop26h 40m

Castries George F. L. Charle

Sun 24/1

12:35-05:50

1 stop13h 15m

£730

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from London with our price prediction graph.

LGW-UVF

LHR-UVF

LCY-UVF

LGW-SLU

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 to Saint Lucia

LON-LC0

LGW-UVF

LHR-UVF

LCY-UVF

LGW-SLU

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

Currently, September is the cheapest month in which you can book a flight from London to Saint Lucia (average of £549). Flying from London to Saint Lucia in December is currently the most expensive (average of £965). 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.

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

When flying from London 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.

How often are flights from London to Saint Lucia delayed?

About 23% of weekly flights between London and Saint Lucia have experienced delays in the past year, with the average delay time being 125 minutes.

What is the most punctual flight time for London to Saint Lucia flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Saint Lucia flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 23% of flights being delayed.

How far ahead should I book a flight from London to Saint Lucia?

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Saint Lucia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Saint Lucia

Read through reviews of airlines operating flights from London to Saint Lucia, such as Finnair,American Airlines, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.

Finnair

7.6

Good

1,428 reviews

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.

American Airlines

7.1

Good

11,989 reviews

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.

Air Canada

7.1

Good

11,519 reviews

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.

JetBlue

7.1

Good

3,037 reviews

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.

British Airways

6.7

Okay

8,184 reviews

Finnair

7.6

Good

1,428 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.

Related info for your journey

How long is the flight from London to Saint Lucia?
For as low as £570, British Airways can have you in Saint Lucia from London in 8h 50m. The distance between London and Saint Lucia is about 4223 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most popular routes from London to Saint Lucia?
The most popular route from London to Saint Lucia is London Heathrow - Castries Hewanorra. You may also consider London Gatwick - Castries Hewanorra or London City - Castries Hewanorra.
Can I find deals for flights from London to Saint Lucia that include hotel bookings?
Yes. In addition to deals on London to Saint Lucia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Saint Lucia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Saint Lucia.
Can I find deals for business class flights from London to Saint Lucia?
Yes. Cheapflights offers flight deals from London 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 to Saint Lucia?
Currently, September is the cheapest month in which you can book a flight from London to Saint Lucia (average of £549). Flying from London to Saint Lucia in December is currently the most expensive (average of £965). 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

Direct flights to

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Popular flights

Alternative routes for London to Saint Lucia

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Top 3 airlines flying from London to Saint Lucia

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£493	Average£727	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£562	Average£867	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest£649	Average£733	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from London to Saint Lucia via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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 Saint Lucia from London.

Can Cheapflights find flights from London to Saint Lucia with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Saint Lucia, users can toggle the no change fees filter when performing a flight search.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from London to Saint Lucia from £328

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 17/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Saint Lucia

Cheapest flights from London to Saint LuciaExplore the most affordable flight options available from London to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Explore the most affordable flight options available from London to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Best flights from London to Saint LuciaDiscover carefully curated flight deals from London to Saint Lucia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Discover carefully curated flight deals from London to Saint Lucia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Direct flights from London to Saint LuciaExplore direct flight options from London to Saint Lucia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 August 2026.

Explore direct flight options from London to Saint Lucia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 August 2026.

Last-minute flights from London to Saint LuciaDiscover last-minute flight deals from London to Saint Lucia. Data last updated 22 August 2026 and is based on user searches.

Discover last-minute flight deals from London to Saint Lucia. Data last updated 22 August 2026 and is based on user searches.

One-way flights from London to Saint LuciaSearch for one-way flight options from London to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated 22 August 2026.

Search for one-way flight options from London to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated 22 August 2026.

Find flight deals from London to Saint Lucia

Round-trip from

One-way from

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

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

Best time to book a flight from London to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from London with our price prediction graph.

Cheapflights Insights

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

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

Find hourly flight availability from London to Saint Lucia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 August 2026.

When flying from London 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.

How often are flights from London to Saint Lucia delayed?

About 23% of weekly flights between London and Saint Lucia have experienced delays in the past year, with the average delay time being 125 minutes.

What is the most punctual flight time for London to Saint Lucia flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Saint Lucia flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 23% of flights being delayed.

How far ahead should I book a flight from London to Saint Lucia?

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Saint Lucia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Saint Lucia

Read through reviews of airlines operating flights from London to Saint Lucia, such as Finnair,American Airlines, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London to Saint Lucia?

What are the most popular routes from London to Saint Lucia?

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

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

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

What is the cheapest month to book a flight from London 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 London 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 London to Saint Lucia by cabin class

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

London and Saint Lucia flights

Browse other London and Saint Lucia flight options. Last updated on 22 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 3 airlines flying from London to Saint Lucia

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

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

Can Cheapflights find flights from London to Saint Lucia with no change fees?

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

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Travel Smart

Cheapest flights from London to Saint Lucia
Explore the most affordable flight options available from London to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Best flights from London to Saint Lucia
Discover carefully curated flight deals from London to Saint Lucia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Direct flights from London to Saint Lucia
Explore direct flight options from London to Saint Lucia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 August 2026.

Last-minute flights from London to Saint Lucia
Discover last-minute flight deals from London to Saint Lucia. Data last updated 22 August 2026 and is based on user searches.

One-way flights from London to Saint Lucia
Search for one-way flight options from London to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated 22 August 2026.