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Cheap flights from London to Saint Lucia from £347

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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — UVF
16 Jul — 23 Jul1
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 11 July 2025.

Round-trip from

£584

One-way from

£347

Popular in

December

Cheapest in

September

Average price

£579

Good round-trip deal

£585 or less

Good one-way deal

£456 or less
British Airways
  • British Airways
  • 27/8-7/9
  • Nonstop
  • 17h 05m total
  • London to Saint Lucia
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11/10
  • 11/10
  • 2 total stops
  • 27h 40m total
  • London to Saint Lucia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£64 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
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Average for round-trip flights in July 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 11 July 2025.

Wed 27/811:15LGW - UVF
Nonstop8h 45mBritish Airways
Sun 7/920:25UVF - LGW
Nonstop8h 20mBritish Airways
Deal found 9/7£584
Tue 26/808:15LHR - UVF
1 stop35h 12mIcelandair
Thu 4/915:06UVF - LHR
2 stops58h 24mIcelandair
Deal found 10/7£585
Wed 15/1007:45LHR - UVF
2 stops59h 30mAir Canada
Tue 21/1015:10UVF - LHR
1 stop15h 40mAir Canada
Deal found 10/7£589
Wed 27/812:10LGW - UVF
2 stops31h 17mIcelandair
Sun 7/915:05UVF - LGW
2 stops37h 30mIcelandair
Deal found 10/7£589
Mon 10/1108:30LHR - UVF
1 stop34h 26mJetBlue
Mon 17/1116:55UVF - LHR
1 stop23h 50mJetBlue
Deal found 10/7£597
Fri 10/1014:30LGW - UVF
2 stops29h 21mFinnair
Fri 24/1016:00UVF - LGW
2 stops35h 35mFinnair
Deal found 11/7£682
Thu 9/1010:55LHR - UVF
2 stops32h 22mDelta
Wed 22/1015:32UVF - LHR
1 stop16h 58mDelta
Deal found 10/7£706
Fri 10/1012:30LHR - UVF
2 stops31h 21mFinnair
Fri 24/1014:56UVF - LHR
1 stop14h 39mFinnair
Deal found 11/7£709
Mon 8/909:55LHR - UVF
1 stop33h 22mAmerican Airlines
Mon 22/915:17UVF - LHR
1 stop14h 18mAmerican Airlines
Deal found 10/7£709
Wed 27/811:25LHR - SLU
1 stop12h 35mMultiple Airlines
Fri 5/912:35SLU - LHR
1 stop12h 45mMultiple Airlines
Deal found 8/7£720
Wed 27/811:15LGW - UVF
Nonstop8h 45mMultiple Airlines
Fri 5/916:00UVF - LGW
2 stops56h 00mMultiple Airlines
Deal found 8/7£731
Sat 13/1212:30LGW - UVF
2 stops28h 30mAmerican Airlines
Tue 23/1214:55UVF - LGW
2 stops36h 35mAmerican Airlines
Deal found 11/7£781

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 11 July 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

Wed 27/8

11:15-15:00

Nonstop8h 45m

Castries Hewanorra

Sun 7/9

20:25-09:45

Nonstop8h 20m

£584

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 26/8

08:15-14:27

1 stop35h 12m

Castries Hewanorra

Thu 4/9

15:06-06:30

2 stops58h 24m

£585

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 15/10

07:45-14:15

2 stops59h 30m

Castries Hewanorra

Tue 21/10

15:10-11:50

1 stop15h 40m

£589

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Wed 27/8

12:10-14:27

2 stops31h 17m

Castries Hewanorra

Sun 7/9

15:05-09:35

2 stops37h 30m

£589

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 10/11

08:30-14:56

1 stop34h 26m

Castries Hewanorra

Mon 17/11

16:55-20:45

1 stop23h 50m

£597

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 9/10

10:55-14:17

2 stops32h 22m

Castries Hewanorra

Wed 22/10

15:32-13:30

1 stop16h 58m

£706

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Fri 10/10

12:30-14:51

2 stops31h 21m

Castries Hewanorra

Fri 24/10

14:56-10:35

1 stop14h 39m

£709

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 8/9

09:55-14:17

1 stop33h 22m

Castries Hewanorra

Mon 22/9

15:17-10:35

1 stop14h 18m

£709

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 27/8

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

Fri 5/9

12:35-06:20

1 stop12h 45m

£720

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Wed 27/8

11:15-15:00

Nonstop8h 45m

Castries Hewanorra

Fri 5/9

16:00-05:00

2 stops56h 00m

£731

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Showing 1-10 of 34 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 11 July 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 13% 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 11 July 2025.
Read through reviews of airlines operating flights from London to Saint Lucia, such as Delta, KLM, andFinnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
1,372 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
1,312 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
United Airlines
7.4
Good
8,848 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
2,913 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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 £386. Air Canada flights start at £464 while deals on Icelandair start at £790 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
Manchester to Bridgetown flights
Gatwick to Bridgetown flights
Gatwick to Kingston flights
Heathrow to Kingston flights
Gatwick to Montego Bay flights
Gatwick to Punta Cana flights
London City to Montego Bay flights
Heathrow to Punta Cana flights
Heathrow to Port of Spain flights
London City to Bridgetown flights
London City to Kingston flights
Gatwick to St. John's flights
Heathrow to Nassau flights
Heathrow to St. John's flights
Heathrow to Castries flights
Heathrow to Kingstown flights
Heathrow to St. George's flights
Gatwick to Santo Domingo flights
Manchester to Montego Bay flights
Heathrow to Luis Munoz Marin Intl flights
London City to Punta Cana flights
Gatwick to Castries flights
Birmingham to Bridgetown flights
Heathrow to Santo Domingo flights
Stansted to Punta Cana flights
Gatwick to Nassau flights
Gatwick to St. George's flights
Heathrow to George Town flights
Stansted to Montego Bay flights
Gatwick to Luis Munoz Marin Intl flights
Gatwick to Havana flights
London City to Castries flights
Birmingham to Montego Bay flights
Heathrow to Road Town flights
Heathrow to Oranjestad flights
Luton to Montego Bay flights
Heathrow to Pointe-à-Pitre flights
Gatwick to Port of Spain flights
Heathrow to Willemstad flights
Manchester to Punta Cana flights
Stansted to Kingston flights
London City to Luis Munoz Marin Intl flights
Gatwick to Kingstown flights
Stansted to Bridgetown flights
Luton to Punta Cana flights
Gatwick to Road Town flights
Heathrow to Simpson Bay 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 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
TUI AirwaysCheapest£279Average£381FlexibilityNo cancel feeOn-timeN/A
Search TUI Airways flights
British AirwaysCheapest£413Average£600FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£424Average£608FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£501Average£778FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air CanadaCheapest£508Average£613FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
KLMCheapest£674Average£1,299FlexibilityNo 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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