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Cheap flights from London to Saint Lucia from £356

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — UVF
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 18 December 2025.

Fri 26/1215:50LHR - UVF
1 stop27h 43mDelta
Thu 15/116:25UVF - LHR
2 stops34h 25mDelta
Deal found 15/12£709
Thu 25/1218:00LHR - UVF
1 stop26h 25mAir Canada
Thu 8/117:15UVF - LHR
2 stops23h 20mAir Canada
Deal found 15/12£791
Thu 25/1213:25LHR - UVF
2 stops31h 00mAir Canada
Thu 15/117:15UVF - LHR
2 stops36h 05mAir Canada
Deal found 15/12£793
Thu 25/1213:25LHR - UVF
2 stops31h 00mAir Canada
Wed 14/117:15UVF - LHR
2 stops33h 55mAir Canada
Deal found 15/12£796
Thu 25/1218:00LHR - UVF
1 stop26h 25mAir Canada
Mon 12/117:15UVF - LHR
1 stop33h 15mAir Canada
Deal found 15/12£813
Fri 26/1208:55LHR - UVF
1 stop34h 38mDelta
Fri 9/116:25UVF - LHR
2 stops34h 25mDelta
Deal found 15/12£870
Mon 29/1209:00LHR - UVF
2 stops59h 20mAir Canada
Mon 12/117:15UVF - LHR
2 stops23h 20mAir Canada
Deal found 15/12£901
Fri 26/1215:50LHR - UVF
1 stop27h 43mDelta
Mon 12/116:25UVF - LHR
1 stop15h 15mDelta
Deal found 17/12£907
Tue 30/1213:20LHR - SLU
1 stop33h 40mMultiple Airlines
Sun 11/112:10SLU - LHR
1 stop13h 15mMultiple Airlines
Deal found 17/12£1,062
Fri 26/1210:00LGW - UVF
Nonstop9h 05mBritish Airways
Mon 12/122:05UVF - LGW
Nonstop8h 15mBritish Airways
Deal found 17/12£1,111
Thu 25/1218:00LHR - SLU
3 stops28h 25mMultiple Airlines
Fri 9/119:10SLU - LHR
3 stops32h 00mMultiple Airlines
Deal found 17/12£1,194
Mon 29/1210:00LGW - UVF
Nonstop9h 05mBritish Airways
Fri 16/120:50UVF - LGW
Nonstop8h 15mBritish Airways
Deal found 16/12£1,196

Find 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 18 December 2025.

Round-trip from

£689

One-way from

£356

Popular in

April

Cheapest in

November

Average price

£990

Good round-trip deal

£664 or less

Good one-way deal

£484 or less
American Airlines
  • American Airlines
  • 15/1-2/2
  • 4 total stops
  • 63h 44m total
  • London to Saint Lucia
Search Deals
23/3
  • 23/3
  • 2 total stops
  • 48h 30m total
  • London to Saint Lucia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£86 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease (£51 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 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.
Search Deals

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 18 December 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

LHR - UVF

LHRUVF

London Heathrow

Wed 21/1

12:00-16:25

2 stops32h 25m

Castries Hewanorra

Wed 28/1

17:15-11:20

1 stop14h 05m

£692

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Mon 11/5

11:15-15:05

Nonstop8h 50m

Castries Hewanorra

Thu 21/5

22:05-11:25

Nonstop8h 20m

£697

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Fri 22/5

11:15-15:05

Nonstop8h 50m

Castries Hewanorra

Mon 25/5

22:05-11:25

Nonstop8h 20m

£707

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 29/12

16:50-15:30

2 stops50h 40m

Castries Hewanorra

Wed 14/1

16:25-06:25

1 stop34h 00m

£709

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 29/12

09:40-15:30

2 stops57h 50m

Castries Hewanorra

Thu 15/1

16:25-07:50

1 stop35h 25m

£709

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 13/1

13:05-15:05

2 stops30h 00m

Castries Hewanorra

Tue 20/1

16:25-11:40

1 stop15h 15m

£713

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 12/1

15:50-15:05

1 stop27h 15m

Castries Hewanorra

Tue 20/1

16:25-11:40

1 stop15h 15m

£713

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 5/2

20:00-15:05

2 stops23h 05m

Castries Hewanorra

Thu 12/2

16:25-11:40

1 stop15h 15m

£713

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Sat 10/1

09:40-15:05

2 stops33h 25m

Castries Hewanorra

Tue 27/1

16:25-20:10

2 stops23h 45m

£715

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Sun 15/2

12:30-16:00

2 stops31h 30m

Castries Hewanorra

Mon 23/2

17:00-10:50

2 stops37h 50m

£722

Flights are sorted by cheapest return flights first.

Deals found on 17/12

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 £286). Flying from London to Saint Lucia in July is currently the most expensive (average of £583). 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 18 December 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.

Weekly flight availability from London to Saint Lucia

Explore weekly flight availability from London to Saint Lucia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 December 2025.

The most flights from LON to LC0 are scheduled on a Monday (2 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (1 on average).

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 129 minutes.

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

Historically, flights departing in the early afternoon 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?

Friday tends to have the lowest number of delays on this route, whereas Tuesday 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, Virgin Atlantic have had the lowest number of delays on this route, with just 16% of flights being delayed.

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 18 December 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
1,338 reviews
Check prices

Entertainment

6.9

Crew

8.1

Overall

7.6

Boarding

7.6

Food

6.7

Comfort

7.4

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
1,338 reviews
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Crew

8.1

Overall

7.6

Boarding

7.6

Food

6.7

Comfort

7.4

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
675 reviews
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Crew

8.1

Overall

7.6

Boarding

7.6

Food

6.7

Comfort

7.4

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
7.0
Good
591 reviews
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Crew

8.1

Overall

7.6

Boarding

7.6

Food

6.7

Comfort

7.4

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
7,585 reviews
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Crew

8.1

Overall

7.6

Boarding

7.6

Food

6.7

Comfort

7.4

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 £697, Air Canada 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, March is the cheapest month in which you can book a flight from London to Saint Lucia (average of £286). Flying from London to Saint Lucia in July is currently the most expensive (average of £583). 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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
TUI AirwaysCheapest£284Average£397FlexibilityNo cancel feeOn-timeN/A
Search TUI Airways flights
Virgin AtlanticCheapest£373Average£520FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£452Average£631FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air CanadaCheapest£520Average£668FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£589Average£809FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£685Average£1,326FlexibilityNo 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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