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Cheap flights from London to Saint Lucia from £398

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — UVF
24 6月 — 1 7月1
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 19 6月 2025.

Round-trip from

£576

One-way from

£398

Popular in

December

Cheapest in

September

Average price

£511

Good round-trip deal

£586 or less

Good one-way deal

£406 or less
Air Canada
  • Air Canada
  • 16/11-2/12
  • 2 total stops
  • 40h 15m total
  • London to Saint Lucia
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British Airways
  • British Airways
  • 1/10
  • Nonstop
  • 8h 45m total
  • London to Saint Lucia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£58 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (£26 potential savings vs. average return price).
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Average for round-trip flights in June 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 19 6月 2025.

週日 16/1118:00LHR - UVF
1 stop26h 00mAir Canada
週二 2/1217:05UVF - LHR
1 stop14h 15mAir Canada
Deal found 18/6£576
週四 20/1110:05LGW - UVF
Nonstop9h 05mBritish Airways
週四 4/1222:10UVF - LGW
Nonstop8h 15mBritish Airways
Deal found 18/6£582
週三 15/1020:25LHR - UVF
2 stops46h 50mMultiple Airlines
週三 29/1016:05UVF - LHR
1 stop34h 25mMultiple Airlines
Deal found 18/6£588
週二 23/911:25LHR - SLU
1 stop12h 35mMultiple Airlines
週三 1/1012:35SLU - LHR
1 stop12h 45mMultiple Airlines
Deal found 18/6£649
週四 4/913:05LGW - UVF
2 stops30h 10mMultiple Airlines
週五 12/915:10UVF - LGW
2 stops34h 10mMultiple Airlines
Deal found 17/6£667
週日 16/1111:20LGW - UVF
2 stops29h 40mAmerican Airlines
週二 2/1216:35UVF - LGW
2 stops34h 55mAmerican Airlines
Deal found 18/6£690
週一 22/908:15LHR - UVF
1 stop34h 30mJetBlue
週一 6/1015:05UVF - LHR
1 stop24h 40mJetBlue
Deal found 17/6£691
週六 11/1016:05LHR - UVF
2 stops27h 12mDelta
週三 22/1015:32UVF - LHR
1 stop14h 38mDelta
Deal found 18/6£700
週一 8/909:55LHR - UVF
1 stop33h 22mAmerican Airlines
週一 22/915:17UVF - LHR
1 stop14h 18mAmerican Airlines
Deal found 17/6£717
週日 14/913:05LGW - SLU
2 stops31h 45mMultiple Airlines
週三 24/910:15SLU - LGW
2 stops39h 05mMultiple Airlines
Deal found 17/6£719
週四 4/912:10LGW - UVF
2 stops53h 36mIcelandair
週日 14/915:05UVF - LGW
2 stops37h 30mIcelandair
Deal found 18/6£742
週二 8/708:15LHR - UVF
1 stop35h 12mIcelandair
週二 15/717:31UVF - LHR
2 stops31h 59mIcelandair
Deal found 17/6£750

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 19 6月 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

週日 16/11

18:00-16:00

1 stop26h 00m

Castries Hewanorra

週二 2/12

17:05-11:20

1 stop14h 15m

£576

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

週四 20/11

10:05-15:10

Nonstop9h 05m

Castries Hewanorra

週四 4/12

22:10-10:25

Nonstop8h 15m

£582

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

週三 15/10

20:25-14:15

2 stops46h 50m

Castries Hewanorra

週三 29/10

16:05-06:30

1 stop34h 25m

£588

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

週二 23/9

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

週三 1/10

12:35-06:20

1 stop12h 45m

£649

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

週四 4/9

13:05-14:15

2 stops30h 10m

Castries Hewanorra

週五 12/9

15:10-06:20

2 stops34h 10m

£667

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

週日 16/11

11:20-13:00

2 stops29h 40m

Castries Hewanorra

週二 2/12

16:35-07:30

2 stops34h 55m

£690

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

週一 22/9

08:15-13:45

1 stop34h 30m

Castries Hewanorra

週一 6/10

15:05-20:45

1 stop24h 40m

£691

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

週六 11/10

16:05-14:17

2 stops27h 12m

Castries Hewanorra

週三 22/10

15:32-11:10

1 stop14h 38m

£700

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

週二 26/8

12:10-16:20

2 stops57h 10m

Castries Hewanorra

週四 4/9

15:06-09:35

2 stops37h 29m

£707

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

週一 8/9

09:55-14:17

1 stop33h 22m

Castries Hewanorra

週一 22/9

15:17-10:35

1 stop14h 18m

£717

Flights are sorted by cheapest return flights first.

Deals found on 17/6

Showing 1-10 of 35 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 19 6月 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 16% 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 19 6月 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
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7,964 reviews
Delta
8.0
Very Good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
1,365 reviews
Delta
8.0
Very Good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
1,292 reviews
Delta
8.0
Very Good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
JetBlue
7.3
Good
2,923 reviews
Delta
8.0
Very Good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

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 £398. Air Canada flights start at £603 while deals on KLM start at £768 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 Bridgetown flights
Heathrow to Montego Bay flights
Heathrow to Kingston flights
Gatwick to Bridgetown flights
Gatwick to Kingston flights
Gatwick to Punta Cana flights
Gatwick to Montego Bay flights
Heathrow to Punta Cana flights
Heathrow to Castries flights
London City to Montego Bay flights
London City to Kingston flights
Heathrow to Port of Spain flights
Heathrow to Luis Munoz Marin Intl flights
Heathrow to St. George's flights
Gatwick to Castries flights
London City to Bridgetown flights
Heathrow to St. John's flights
London City to Punta Cana flights
Manchester to Bridgetown flights
Gatwick to Luis Munoz Marin Intl flights
Gatwick to Santo Domingo flights
Heathrow to Nassau flights
Gatwick to St. John's flights
Heathrow to George Town flights
Heathrow to Santo Domingo flights
Manchester to Montego Bay flights
Stansted to Punta Cana flights
Heathrow to Kingstown flights
London City to Castries flights
Stansted to Montego Bay flights
Gatwick to St. George's flights
London City to Luis Munoz Marin Intl flights
Luton to Punta Cana flights
Gatwick to Havana flights
Luton to Montego Bay flights
Gatwick to George Town flights
Stansted to Kingston flights
Heathrow to Castries flights
Gatwick to Port of Spain flights
Heathrow to Oranjestad flights
Gatwick to Nassau flights
Birmingham to Montego Bay flights
London City to Santo Domingo flights
Manchester to Punta Cana flights
Heathrow to Road Town flights
Heathrow to Havana flights
Heathrow to Basseterre flights
Gatwick to Basseterre flights
Heathrow to Scarborough flights
Heathrow to Willemstad 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 19 6月 2025.
AirlineCheapestAverageFlexibilityOn-time
TUI AirwaysCheapest£282Average£385FlexibilityNo cancel feeOn-timeN/A
Search TUI Airways flights
British AirwaysCheapest£416Average£627FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£432Average£623FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air CanadaCheapest£513Average£620FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£533Average£787FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£681Average£1,319FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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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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