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Cheap flights from the United Kingdom to Saint Lucia from £337

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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — UVF
3 Sep — 10 Sep1
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 4 August 2026.

Mon 21/911:15
LGW
-
UVF
Nonstop8h 45m
British Airways
Mon 28/922:00
UVF
-
LGW
Nonstop8h 25m
British Airways
Deal found 31/7£540
Mon 28/911:15
LGW
-
UVF
Nonstop8h 45m
British Airways
Mon 5/1022:05
UVF
-
LGW
Nonstop8h 20m
British Airways
Deal found 3/8£543
Mon 28/911:15
LGW
-
UVF
Nonstop8h 45m
British Airways
Mon 12/1022:05
UVF
-
LGW
Nonstop8h 20m
British Airways
Deal found 31/7£545
Tue 1/911:15
LGW
-
UVF
Nonstop8h 45m
British Airways
Sun 13/920:25
UVF
-
LGW
Nonstop8h 25m
British Airways
Deal found 30/7£546
Thu 3/911:15
LGW
-
UVF
Nonstop8h 45m
British Airways
Sun 13/920:25
UVF
-
LGW
Nonstop8h 25m
British Airways
Deal found 30/7£546
Tue 24/1112:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Tue 1/1219:20
UVF
-
LGW
Nonstop8h 15m
British Airways
Deal found 2/8£547
Sun 13/911:15
LGW
-
UVF
Nonstop8h 45m
British Airways
Sun 20/920:25
UVF
-
LGW
Nonstop8h 25m
British Airways
Deal found 30/7£551
Tue 17/1112:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Sun 20/1219:20
UVF
-
LGW
Nonstop8h 15m
British Airways
Deal found 1/8£556
Thu 10/911:15
LGW
-
UVF
Nonstop8h 45m
British Airways
Thu 11/319:20
UVF
-
LGW
Nonstop8h 15m
British Airways
Deal found 2/8£558
Thu 12/1112:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Thu 26/1119:20
UVF
-
LGW
Nonstop8h 15m
British Airways
Deal found 3/8£559
Tue 15/908:15
LHR
-
UVF
1 stop36h 18m
JetBlue
Mon 28/916:39
UVF
-
LHR
1 stop35h 51m
JetBlue
Deal found 30/7£577
Mon 21/908:15
LHR
-
UVF
1 stop36h 18m
JetBlue
Mon 28/916:39
UVF
-
LHR
1 stop35h 51m
JetBlue
Deal found 31/7£581

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 4 August 2026.

Round-trip from

£540

One-way from

£337

Good round-trip deal

£591 or less

Good one-way deal

£615 or less
British Airways
  • British Airways
  • 21/9-28/9
  • Nonstop
  • 17h 10m total
  • United Kingdom to Saint Lucia
Search Deals
11/9
  • 11/9
  • 3 total stops
  • 44h 40m total
  • United Kingdom to Saint Lucia
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 4 August 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

LGW - UVF

LGWUVF

London Gatwick

Thu 3/9

10:45-13:49

2 stops32h 04m

Castries Hewanorra

Sun 20/9

15:02-06:50

2 stops34h 48m

£657

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Tue 19/1

19:10-16:02

2 stops24h 52m

Castries Hewanorra

Thu 28/1

17:02-12:05

1 stop15h 03m

£682

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Fri 22/1

19:20-15:03

2 stops23h 43m

Castries Hewanorra

Tue 26/1

17:02-12:05

1 stop15h 03m

£682

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Mon 18/1

19:20-16:02

2 stops24h 42m

Castries Hewanorra

Sun 24/1

17:02-12:05

1 stop15h 03m

£682

LondonCastries

LHR - UVF

LHRUVF

London Heathrow

Fri 22/1

18:05-12:29

1 stop22h 24m

Castries Hewanorra

Fri 29/1

14:56-12:05

1 stop17h 09m

£682

ManchesterCastries

MAN - UVF

MANUVF

Manchester

Mon 5/10

06:55-15:05

1 stop13h 10m

Castries Hewanorra

Mon 12/10

22:05-09:50

1 stop30h 45m

£683

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Wed 25/11

10:05-19:00

1 stop12h 55m

Castries George F. L. Charle

Sun 6/12

15:45-09:05

1 stop13h 20m

£691

LondonCastries

LGW - SLU

LGWSLU

London Gatwick

Thu 21/1

10:05-19:00

1 stop12h 55m

Castries George F. L. Charle

Thu 18/2

15:45-10:25

1 stop14h 40m

£698
Fastest return journey

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 14/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Mon 21/9

12:35-06:15

1 stop12h 40m

£711

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Sun 13/9

11:10-19:00

1 stop12h 50m

Castries George F. L. Charle

Sun 20/9

12:35-06:15

1 stop12h 40m

£713

Flights are sorted by cheapest return flights first.

Deals found on 3/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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

Currently, September is the cheapest month in which you can book a flight from United Kingdom to Saint Lucia (average of £555). Flying from United Kingdom to Saint Lucia in December is currently the most expensive (average of £1,001). 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 4 August 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 23% of weekly flights between United Kingdom and Saint Lucia have experienced delays in the past year, with the average delay time being 122 minutes.

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

Historically, flights departing in the morning 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 23% of flights being delayed.

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 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 4 August 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
7.7
Good
1,426 reviews
Check prices

Crew

8.2

Entertainment

6.9

Overall

7.7

Comfort

7.4

Food

6.7

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Finnair
7.7
Good
1,426 reviews
Finnair
7.7
Good
1,426 reviews
Check prices

Crew

8.2

Entertainment

6.9

Overall

7.7

Comfort

7.4

Food

6.7

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
JetBlue
7.2
Good
3,027 reviews
Finnair
7.7
Good
1,426 reviews
Check prices

Crew

8.2

Entertainment

6.9

Overall

7.7

Comfort

7.4

Food

6.7

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
American Airlines
7.1
Good
11,843 reviews
Finnair
7.7
Good
1,426 reviews
Check prices

Crew

8.2

Entertainment

6.9

Overall

7.7

Comfort

7.4

Food

6.7

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Air Canada
7.1
Good
11,422 reviews
Finnair
7.7
Good
1,426 reviews
Check prices

Crew

8.2

Entertainment

6.9

Overall

7.7

Comfort

7.4

Food

6.7

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
British Airways
6.7
Okay
8,147 reviews
Finnair
7.7
Good
1,426 reviews
Check prices

Crew

8.2

Entertainment

6.9

Overall

7.7

Comfort

7.4

Food

6.7

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

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, British Airways, and Delta can get you from United Kingdom to Saint Lucia in just under 13h 10m. Your travel time can differ by up to 18h 54m. There are 4180 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, September is the cheapest month in which you can book a flight from United Kingdom to Saint Lucia (average of £555). Flying from United Kingdom to Saint Lucia in December is currently the most expensive (average of £1,001). 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 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
Gatwick to Bridgetown flights
Heathrow to Kingston flights
Stansted to Bridgetown flights
Manchester to Bridgetown flights
London City to Bridgetown flights
Stansted to Montego Bay flights
Heathrow to Punta Cana flights
Gatwick to Kingston flights
London City to Montego Bay flights
Gatwick to Punta Cana flights
Heathrow to Castries flights
Heathrow to Port of Spain flights
London City to Kingston flights
Luton to Montego Bay flights
Stansted to Punta Cana flights
Heathrow to Nassau flights
Stansted to Kingston flights
Gatwick to Montego Bay flights
Gatwick to Castries flights
London City to Punta Cana flights
Heathrow to St. George's flights
Heathrow to Santo Domingo flights
Heathrow to Kingstown flights
Heathrow to St. John's flights
Heathrow to Luis Munoz Marin Intl flights
Gatwick to St. John's flights
Luton to Punta Cana flights
Heathrow to Castries flights
Stansted to Port of Spain flights
Gatwick to Santo Domingo flights
London City to Luis Munoz Marin Intl flights
Gatwick to Luis Munoz Marin Intl flights
London City to Castries flights
Heathrow to Pointe-à-Pitre flights
Gatwick to Havana flights
Gatwick to Port of Spain flights
Gatwick to Castries flights
Stansted to Luis Munoz Marin Intl flights
Stansted to Santo Domingo flights
Heathrow to Providenciales flights
Manchester to Montego Bay flights
Gatwick to Nassau flights
Gatwick to Providenciales flights
Heathrow to Basseterre flights
Heathrow to Willemstad flights
Gatwick to St. George's flights
Heathrow to George Town flights

Top 4 airlines flying from United Kingdom to Saint Lucia

Discover the top 4 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 4 August 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£500Average£798FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£570Average£879FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest£635Average£743FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
KLMCheapest£1,157Average£1,632FlexibilityNo 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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