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Cheap flights from the United Kingdom to Saint Lucia from £408

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — UVF
5 Jun — 12 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Saint Lucia

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Saint Lucia
Explore the most affordable flight options available from United Kingdom to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 May 2026.

Thu 11/611:15
LGW
-
UVF
Nonstop8h 50m
British Airways
Sat 27/620:30
UVF
-
LGW
Nonstop8h 20m
British Airways
Deal found 6/5£605
Sat 7/1112:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Thu 19/1119:20
UVF
-
LGW
Nonstop8h 15m
British Airways
Deal found 6/5£606
Tue 16/611:15
LGW
-
UVF
Nonstop8h 50m
British Airways
Tue 30/620:30
UVF
-
LGW
Nonstop8h 20m
British Airways
Deal found 5/5£611
Fri 5/611:15
LGW
-
UVF
Nonstop8h 50m
British Airways
Fri 12/620:50
UVF
-
LGW
Nonstop8h 20m
British Airways
Deal found 6/5£616
Sat 7/1112:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Sat 21/1119:20
UVF
-
LGW
Nonstop8h 15m
British Airways
Deal found 6/5£623
Tue 2/611:15
LGW
-
UVF
Nonstop8h 50m
British Airways
Tue 9/620:30
UVF
-
LGW
Nonstop8h 20m
British Airways
Deal found 5/5£626
Mon 17/811:15
LGW
-
UVF
Nonstop8h 45m
British Airways
Thu 3/922:00
UVF
-
LGW
Nonstop8h 25m
British Airways
Deal found 3/5£630
Fri 19/611:15
LGW
-
UVF
Nonstop8h 50m
British Airways
Fri 10/720:50
UVF
-
LGW
Nonstop8h 20m
British Airways
Deal found 3/5£638
Sun 31/511:15
LGW
-
UVF
Nonstop8h 55m
British Airways
Sun 14/620:30
UVF
-
LGW
Nonstop8h 20m
British Airways
Deal found 5/5£654
Sun 8/1110:05
LGW
-
SLU
1 stop12h 55m
Multiple Airlines
Sun 29/1115:45
SLU
-
LGW
1 stop13h 20m
Multiple Airlines
Deal found 5/5£722
Wed 16/909:55
LHR
-
UVF
1 stop32h 55m
American Airlines
Thu 1/1016:00
UVF
-
LHR
1 stop15h 35m
American Airlines
Deal found 6/5£744
Fri 4/1215:35
LHR
-
UVF
1 stop24h 54m
American Airlines
Mon 14/1216:53
UVF
-
LHR
1 stop14h 37m
American Airlines
Deal found 5/5£745

Find flight deals from United Kingdom to Saint Lucia

Keep the following information in mind while searching for United Kingdom to Saint Lucia flight deals. Data was last updated 6 May 2026.

Round-trip from

£605

One-way from

£408

Popular in

August

Cheapest in

November

Average price

£887

Good round-trip deal

£653 or less

Good one-way deal

£501 or less
British Airways
  • British Airways
  • 11/6-27/6
  • Nonstop
  • 17h 10m total
  • United Kingdom to Saint Lucia
Search Deals
18/9
  • 18/9
  • 2 total stops
  • 43h 40m total
  • United Kingdom to Saint Lucia
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£154 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (£51 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Saint Lucia.
Search Deals
Price to beat on a one-way flight from United Kingdom to Saint Lucia.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 6 May 2026.
Use the filters below to find and compare flights from the United Kingdom to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Thu 24/9

18:05-13:50

2 stops24h 45m

Castries Hewanorra

Mon 12/10

16:20-12:10

1 stop14h 50m

£750

ManchesterCastries

MAN - SLU

MANSLU

Manchester

Wed 2/9

19:50-19:00

2 stops28h 10m

Castries George F. L. Charle

Mon 7/9

12:35-13:10

2 stops19h 35m

£836
Fastest return journey

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Sun 12/7

11:15-15:05

Nonstop8h 50m

Castries Hewanorra

Mon 10/8

22:00-11:25

Nonstop8h 25m

£840

LondonCastries

LCY - UVF

LCYUVF

London City

Thu 24/9

09:20-14:23

2 stops34h 03m

Castries Hewanorra

Mon 12/10

15:41-16:40

2 stops19h 59m

£866

EdinburghCastries

EDI - UVF

EDIUVF

Edinburgh Turnhouse

Sat 20/6

12:10-12:34

1 stop29h 24m

Castries Hewanorra

Sat 27/6

16:33-09:20

1 stop35h 47m

£897

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Sun 6/9

12:00-14:14

1 stop31h 14m

Castries Hewanorra

Sun 20/9

16:00-21:40

2 stops24h 40m

£918

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Wed 20/5

15:15-14:05

1 stop27h 50m

Castries Hewanorra

Wed 27/5

15:25-13:15

1 stop16h 50m

£927

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 16/6

18:05-14:16

2 stops25h 11m

Castries Hewanorra

Tue 23/6

14:46-12:35

1 stop16h 49m

£944

LondonCastries

LGW - UVF

LGWUVF

London Gatwick

Fri 5/6

21:20-13:40

3 stops45h 20m

Castries Hewanorra

Fri 12/6

15:05-20:45

2 stops24h 40m

£951

ManchesterCastries

MAN - SLU

MANSLU

Manchester

Sat 5/9

18:10-19:00

2 stops29h 50m

Castries George F. L. Charle

Mon 14/9

12:35-11:30

2 stops17h 55m

£966

Flights are sorted by cheapest return flights first.

Deals found on 4/5

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from United Kingdom to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from United Kingdom 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 the United Kingdom to Saint Lucia

How far ahead should I book a flight from United Kingdom to Saint Lucia?

The price you pay for your flight from United Kingdom to Saint Lucia may vary depending on when you book. For the best chance of a lower fare, look to book 89 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from United Kingdom to Saint Lucia (average of £303). Flying from United Kingdom to Saint Lucia in December is currently the most expensive (average of £577). 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 GB to LC?

Find hourly flight availability from United Kingdom 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 6 May 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Saint Lucia as you normally would.

How often are flights from the United Kingdom to Saint Lucia delayed?

About 22% of weekly flights between United Kingdom and Saint Lucia have experienced delays in the past year, with the average delay time being 113 minutes.

What is the most punctual flight time for the United Kingdom 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?

Thursday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Saint Lucia flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 21% 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 6 May 2026.
Read through reviews of airlines operating flights from the United Kingdom to Saint Lucia, such as Finnair,JetBlue, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,392 reviews
Check prices

Comfort

7.4

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
Finnair
7.6
Good
1,392 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Comfort

7.4

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
JetBlue
7.2
Good
2,979 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Comfort

7.4

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
American Airlines
7.1
Good
11,669 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Comfort

7.4

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
Air Canada
7.1
Good
11,003 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Comfort

7.4

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
British Airways
6.7
Okay
7,946 reviews
Finnair
7.6
Good
1,392 reviews
Check prices

Comfort

7.4

Crew

8.2

Boarding

7.7

Food

6.7

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom to Saint Lucia?

    American Airlines, Delta, and JetBlue can get you from United Kingdom to Saint Lucia in just under 24h 45m. Your travel time can differ by up to 9h 18m. There are 4217 mi between United Kingdom and Saint Lucia. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from United Kingdom to Saint Lucia that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Saint Lucia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Saint Lucia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Saint Lucia.

  • Can I find deals for business class flights from United Kingdom to Saint Lucia?

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Saint Lucia?

    Currently, May is the cheapest month in which you can book a flight from United Kingdom to Saint Lucia (average of £303). Flying from United Kingdom to Saint Lucia in December is currently the most expensive (average of £577). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for United Kingdom 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
Stansted to Bridgetown flights
Gatwick to Punta Cana flights
Stansted to Montego Bay flights
Heathrow to Punta Cana flights
London City to Kingston flights
Stansted to Kingston flights
Gatwick to Kingston flights
London City to Montego Bay flights
Stansted to Punta Cana flights
London City to Bridgetown flights
Luton to Montego Bay flights
Heathrow to Nassau flights
Heathrow to Castries flights
Gatwick to Castries flights
Luton to Punta Cana flights
Heathrow to St. John's flights
Heathrow to Port of Spain flights
Gatwick to Montego Bay flights
Edinburgh to Bridgetown flights
Heathrow to Kingstown flights
London City to Punta Cana flights
Manchester to Bridgetown flights
Heathrow to Santo Domingo flights
Heathrow to St. George's flights
Gatwick to Santo Domingo flights
Heathrow to Roseau flights
Stansted to Port of Spain flights
London City to Santo Domingo flights
Gatwick to St. John's flights
Stansted to Santo Domingo flights
Gatwick to Port of Spain flights
Gatwick to Havana flights
Birmingham to Montego Bay flights
Heathrow to George Town flights
Gatwick to St. George's flights
Gatwick to Willemstad flights
Heathrow to Luis Munoz Marin Intl flights
Heathrow to Castries flights
London City to Castries flights
Heathrow to Willemstad flights
Manchester to Montego Bay flights
Gatwick to Luis Munoz Marin Intl flights
Stansted to Luis Munoz Marin Intl flights
Gatwick to Nassau flights

Top 6 airlines flying from United Kingdom to Saint Lucia

Discover the top 6 airlines that operate flights from United Kingdom 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 6 May 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£490Average£824FlexibilityNo cancel feeOn-time70%
Search British Airways flights
JetBlueCheapest£527Average£825FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Air CanadaCheapest£628Average£769FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£684Average£898FlexibilityNo cancel feeOn-time76%
Search Finnair flights
American AirlinesCheapest£699Average£950FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest£1,145Average£1,484FlexibilityNo 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 United Kingdom to Saint Lucia?

Deals for United Kingdom to Saint Lucia flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Saint Lucia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from United Kingdom to Saint Lucia for you. Better yet — we are completely free to use.

Can Cheapflights find flights from United Kingdom to Saint Lucia with no change fees?

Certainly. Search results for flights to Saint Lucia from United Kingdom shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from United Kingdom to Saint Lucia become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Saint Lucia from United Kingdom today and book when prices fit your budget.

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