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Cheap flights from London to Saint Lucia from £332

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — UVF
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Saint Lucia

Keep the following information in mind while searching for London to Saint Lucia flight deals. Data was last updated 30 October 2025.

Round-trip from

£582

One-way from

£332

Popular in

April

Cheapest in

November

Average price

£522

Good round-trip deal

£650 or less

Good one-way deal

£503 or less
Icelandair
  • Icelandair
  • 21/1-28/1
  • 2 total stops
  • 60h 50m total
  • London to Saint Lucia
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JetBlue
  • JetBlue
  • 2/2
  • 1 total stop
  • 35h 10m total
  • London to Saint Lucia
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£106 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease (£55 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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.
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Find flight deals from London to Saint Lucia

Enter your travel dates to find the best prices.

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 30 October 2025.

Sat 15/1108:05LHR - UVF
1 stop34h 52mIcelandair
Thu 27/1117:01UVF - LHR
1 stop23h 44mIcelandair
Deal found 29/10£604
Thu 13/1112:20LHR - UVF
1 stop30h 37mIcelandair
Fri 12/1216:57UVF - LHR
1 stop25h 03mIcelandair
Deal found 30/10£605
Thu 27/1107:25LHR - UVF
1 stop36h 16mIcelandair
Thu 4/1216:57UVF - LHR
1 stop23h 48mIcelandair
Deal found 28/10£606
Thu 13/1107:25LHR - UVF
1 stop35h 32mIcelandair
Thu 11/1216:57UVF - LHR
1 stop23h 48mIcelandair
Deal found 28/10£608
Tue 11/1110:00LGW - UVF
Nonstop9h 05mBritish Airways
Tue 18/1120:50UVF - LGW
Nonstop8h 15mBritish Airways
Deal found 28/10£612
Wed 19/1112:20LHR - UVF
1 stop31h 21mIcelandair
Wed 26/1117:01UVF - LHR
2 stops33h 54mIcelandair
Deal found 29/10£614
Fri 28/1108:05LHR - UVF
1 stop35h 02mIcelandair
Fri 5/1216:57UVF - LHR
1 stop25h 03mIcelandair
Deal found 29/10£620
Wed 19/1112:20LHR - UVF
1 stop31h 21mIcelandair
Thu 4/1216:57UVF - LHR
1 stop23h 48mIcelandair
Deal found 29/10£621
Tue 18/1110:00LGW - UVF
Nonstop9h 05mBritish Airways
Tue 25/1120:50UVF - LGW
Nonstop8h 15mBritish Airways
Deal found 28/10£628
Wed 17/1209:20LHR - UVF
2 stops34h 27mIcelandair
Sun 28/1214:20UVF - LHR
2 stops39h 10mIcelandair
Deal found 30/10£629
Tue 18/1112:20LHR - UVF
1 stop30h 37mIcelandair
Sun 23/1117:01UVF - LHR
1 stop23h 44mIcelandair
Deal found 29/10£635
Tue 11/1110:00LGW - UVF
Nonstop9h 05mBritish Airways
Fri 21/1120:50UVF - LGW
Nonstop8h 15mBritish Airways
Deal found 28/10£648

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Saint Lucia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 30 October 2025.
Use the filters below to find and compare flights from London to Saint Lucia that are best for you.

Fly from

London

Fly to

Saint Lucia

Route

Depart

Return

Price

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Tue 17/3

10:00-15:05

Nonstop9h 05m

Castries Hewanorra

Wed 18/3

20:35-08:50

Nonstop8h 15m

£585

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Fri 6/3

10:00-15:05

Nonstop9h 05m

Castries Hewanorra

Tue 17/3

20:50-09:05

Nonstop8h 15m

£595

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 31/12

08:55-15:30

1 stop34h 35m

Castries Hewanorra

Thu 15/1

16:25-20:10

2 stops23h 45m

£709

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Sat 21/2

10:05-15:10

Nonstop9h 05m

Castries Hewanorra

Sat 7/3

20:35-08:50

Nonstop8h 15m

£711

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 17/11

15:50-15:39

1 stop27h 49m

Castries Hewanorra

Tue 25/11

16:59-07:50

1 stop34h 51m

£714

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Fri 14/11

09:40-15:39

2 stops33h 59m

Castries Hewanorra

Wed 26/11

16:59-08:05

2 stops35h 06m

£714

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 13/11

09:40-15:39

2 stops33h 59m

Castries Hewanorra

Wed 26/11

16:59-08:05

2 stops35h 06m

£714

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 12/11

10:10-15:39

2 stops33h 29m

Castries Hewanorra

Mon 24/11

16:59-06:20

2 stops33h 21m

£714

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Fri 14/11

08:55-15:39

1 stop34h 44m

Castries Hewanorra

Sun 23/11

16:59-09:00

1 stop36h 01m

£714

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 13/11

15:50-15:39

1 stop27h 49m

Castries Hewanorra

Mon 24/11

16:59-06:20

2 stops33h 21m

£714

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 60 results
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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.
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

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

Currently, March is the cheapest month in which you can book a flight from London to Saint Lucia (average of £288). Flying from London to Saint Lucia in July is currently the most expensive (average of £566). 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?

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 30 October 2025.

A simple way to save on the total cost of your ticket is to fly from London to Saint Lucia in the morning. If you’re flexible enough to do this you can expect to save up to 47% on your trip compared to booking a flight in the afternoon.

Reviews of airlines servicing Saint Lucia

Get insights into the airlines that provide service to Saint Lucia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Saint Lucia. Reviews last updated 30 October 2025.
Read through reviews of airlines operating flights from London to Saint Lucia, such as Finnair, Virgin Atlantic, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,333 reviews
Check prices

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.4

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
Finnair
7.6
Good
1,333 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.4

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
Virgin Atlantic
7.5
Good
670 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.4

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
Icelandair
7.1
Good
562 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.4

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
British Airways
6.7
Okay
7,487 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.4

Boarding

7.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(

Related info for your journey

Find useful and relevant information for your journey from London to Saint Lucia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London to Saint Lucia?

    For as low as £585, British Airways can have you in Saint Lucia from London in 9h 05m. 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 Heathrow - Castries George F. L. Charle.

  • 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, March is the cheapest month in which you can book a flight from London to Saint Lucia (average of £288). Flying from London to Saint Lucia in July is currently the most expensive (average of £566). 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

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Alternative routes for London to Saint Lucia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from London to Saint Lucia

Discover the top 6 airlines that operate flights from London to Saint Lucia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
TUI AirwaysCheapest£287Average£402FlexibilityNo cancel feeOn-timeN/A
Search TUI Airways flights
Virgin AtlanticCheapest£389Average£594FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£432Average£609FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air CanadaCheapest£526Average£676FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£596Average£818FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£692Average£1,341FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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