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Cheap flights from London to Saint Lucia from £383

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — UVF
4 May — 11 May1
1 adult

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 29 April 2025.

Round-trip from

£497

One-way from

£383

Popular in

December

Cheapest in

September

Average price

£686

Good round-trip deal

£533 or less

Good one-way deal

£422 or less
British Airways
  • British Airways
  • 8/9-22/9
  • Nonstop
  • 17h 10m total
  • London to Saint Lucia
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British Airways
  • British Airways
  • 18/8
  • Nonstop
  • 8h 45m total
  • London to Saint Lucia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from London (LON) to Saint Lucia.
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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

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 29 April 2025.

Mon 8/911:15LGW - UVF
Nonstop8h 50mBritish Airways
Mon 22/922:05UVF - LGW
Nonstop8h 20mBritish Airways
Deal found 28/4£497
Mon 8/908:15LHR - UVF
1 stop34h 44mIcelandair
Mon 22/915:05UVF - LHR
1 stop24h 40mIcelandair
Deal found 28/4£555
Thu 12/612:05LHR - UVF
1 stop31h 10mAir Canada
Tue 17/615:10UVF - LHR
1 stop34h 25mAir Canada
Deal found 28/4£585
Mon 3/1120:15LHR - UVF
2 stops47h 45mMultiple Airlines
Sun 9/1117:05UVF - LHR
1 stop35h 25mMultiple Airlines
Deal found 28/4£603
Mon 2/612:10LGW - UVF
2 stops30h 39mIcelandair
Mon 16/617:40UVF - LGW
2 stops34h 55mIcelandair
Deal found 28/4£625
Mon 3/1108:00LHR - SLU
1 stop13h 30mMultiple Airlines
Sun 9/1112:10SLU - LHR
1 stop17h 25mMultiple Airlines
Deal found 28/4£662
Mon 8/915:05LGW - UVF
2 stops27h 38mFinnair
Mon 22/915:34UVF - LGW
2 stops34h 01mFinnair
Deal found 28/4£675
Thu 11/915:05LGW - UVF
2 stops27h 38mAmerican Airlines
Sat 27/915:34UVF - LGW
2 stops34h 01mAmerican Airlines
Deal found 29/4£686
Mon 19/520:10LHR - UVF
2 stops22h 56mDelta
Thu 5/615:26UVF - LHR
2 stops40h 09mDelta
Deal found 28/4£706
Thu 11/919:05LHR - UVF
2 stops23h 38mAmerican Airlines
Sat 27/915:34UVF - LHR
2 stops23h 11mAmerican Airlines
Deal found 29/4£708
Tue 6/516:35LHR - UVF
2 stops26h 36mFinnair
Tue 13/515:14UVF - LHR
2 stops36h 01mFinnair
Deal found 28/4£802
Thu 19/611:15LGW - UVF
Nonstop8h 50mMultiple Airlines
Sun 6/714:35UVF - LGW
2 stops37h 50mMultiple Airlines
Deal found 29/4£812

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 29 April 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

Mon 8/9

11:15-15:05

Nonstop8h 50m

Castries Hewanorra

Mon 22/9

22:05-11:25

Nonstop8h 20m

£497

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 8/9

08:15-13:59

1 stop34h 44m

Castries Hewanorra

Mon 22/9

15:05-20:45

1 stop24h 40m

£555

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 12/6

12:05-14:15

1 stop31h 10m

Castries Hewanorra

Tue 17/6

15:10-06:35

1 stop34h 25m

£585

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Mon 2/6

12:10-13:49

2 stops30h 39m

Castries Hewanorra

Mon 16/6

17:40-09:35

2 stops34h 55m

£625

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 12/6

11:30-14:15

2 stops31h 45m

Castries Hewanorra

Tue 17/6

15:10-06:30

2 stops34h 20m

£628

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Mon 8/9

15:05-13:43

2 stops27h 38m

Castries Hewanorra

Mon 22/9

15:34-06:35

2 stops34h 01m

£675

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Thu 11/9

15:05-13:43

2 stops27h 38m

Castries Hewanorra

Sat 27/9

15:34-06:35

2 stops34h 01m

£686

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 8/9

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

Mon 22/9

12:35-06:20

1 stop12h 45m

£702

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 19/5

20:10-14:06

2 stops22h 56m

Castries Hewanorra

Thu 5/6

15:26-12:35

2 stops40h 09m

£706

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 11/9

09:55-13:43

1 stop32h 48m

Castries Hewanorra

Sat 27/9

15:34-06:55

1 stop34h 21m

£708

Flights are sorted by cheapest return flights first.

Deals found on 28/4

Showing 1-10 of 33 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 £328). Flying from London to Saint Lucia in December is currently the most expensive (average of £1,100). 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 29 April 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 29% on your trip compared to booking a flight at midday.

What is the cheapest day to fly from London to Saint Lucia?

Use this chart to determine the cheapest time to fly return from London to Saint Lucia. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London to Saint Lucia flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 29 April 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from London to Saint Lucia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,929 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,929 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Turkish Airlines
7.3
Good
3,788 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines to fly from London to Saint Lucia one-way?

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £383. WestJet flights start at £456 while deals on Air Canada start at £483 one-way.

  • 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 £328). Flying from London to Saint Lucia in December is currently the most expensive (average of £1,100). 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

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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.
Heathrow to Montego Bay flights
Heathrow to Bridgetown flights
Heathrow to Kingston flights
Gatwick to Kingston flights
Gatwick to Montego Bay flights
Gatwick to Bridgetown flights
London City to Kingston flights
Heathrow to Punta Cana flights
Gatwick to Punta Cana flights
Heathrow to Nassau flights
Heathrow to Santo Domingo flights
Heathrow to Luis Munoz Marin Intl flights
Heathrow to Castries flights
London City to Montego Bay flights
Gatwick to Luis Munoz Marin Intl flights
Heathrow to Pointe-à-Pitre flights
Gatwick to Santo Domingo flights
Gatwick to St. George's flights
London City to Punta Cana flights
Luton to Montego Bay flights
Stansted to Montego Bay flights
Heathrow to Port of Spain flights
Gatwick to Castries flights
Heathrow to Roseau flights
Stansted to Kingston flights
Stansted to Punta Cana flights
Gatwick to Nassau flights
Heathrow to St. George's flights
Manchester to Bridgetown flights
Gatwick to Basseterre flights
London City to Bridgetown flights
Heathrow to George Town flights
Birmingham to Montego Bay flights
London City to Castries flights
Heathrow to St. John's flights
Luton to Punta Cana flights
Gatwick to Havana flights
Gatwick to Pointe-à-Pitre flights
Manchester to Montego Bay flights
London City to Luis Munoz Marin Intl flights
Heathrow to Kingstown flights
Gatwick to St. John's flights
London City to Santo Domingo flights
Manchester to Punta Cana flights
Heathrow to Basseterre flights
Gatwick to Port of Spain flights
Gatwick to Roseau flights
Heathrow to Providenciales flights
Manchester to Luis Munoz Marin Intl flights
Heathrow to Havana flights

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 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
TUI AirwaysCheapest£284Average£346FlexibilityNo cancel feeOn-timeN/A
Search TUI Airways flights
British AirwaysCheapest£420Average£608FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£435Average£637FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£514Average£1,321FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest£516Average£624FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£536Average£813FlexibilityNo cancel feeOn-time76%
Search Finnair 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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