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Cheap flights from Saint Lucia to London from £360

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
UVF — LON
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Saint Lucia to London

Enter your travel dates to find the best prices.

Cheapest flights from Saint Lucia to London
Explore the most affordable flight options available from Saint Lucia to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 February 2026.

Fri 15/520:50
UVF
-
LGW
Nonstop8h 20m
British Airways
Sat 30/511:15
LGW
-
UVF
Nonstop8h 50m
British Airways
Deal found 10/2£711
Thu 14/514:30
UVF
-
LGW
2 stops37h 55m
WestJet
Sat 30/510:45
LGW
-
UVF
2 stops31h 55m
WestJet
Deal found 10/2£748
Wed 18/217:15
UVF
-
LHR
1 stop14h 05m
Air Canada
Wed 25/218:00
LHR
-
UVF
1 stop26h 25m
Air Canada
Deal found 10/2£756
Sun 17/514:30
UVF
-
LGW
2 stops21h 30m
Multiple Airlines
Sat 30/509:40
LGW
-
UVF
1 stop33h 00m
Multiple Airlines
Deal found 11/2£768
Sun 17/514:30
UVF
-
LGW
2 stops37h 55m
WestJet
Sat 30/510:45
LGW
-
UVF
2 stops31h 55m
WestJet
Deal found 10/2£769
Thu 14/514:30
UVF
-
LGW
2 stops37h 55m
WestJet
Tue 2/610:45
LGW
-
UVF
2 stops55h 55m
WestJet
Deal found 10/2£772
Sun 17/514:30
UVF
-
LGW
2 stops37h 55m
WestJet
Tue 2/610:45
LGW
-
UVF
2 stops55h 55m
WestJet
Deal found 10/2£794
Mon 23/217:15
UVF
-
LHR
1 stop14h 05m
Air Canada
Wed 11/311:10
LHR
-
UVF
1 stop32h 15m
Air Canada
Deal found 10/2£863
Fri 3/416:05
UVF
-
LHR
1 stop14h 45m
Air Canada
Wed 15/417:40
LHR
-
UVF
1 stop26h 45m
Air Canada
Deal found 11/2£872
Sat 14/315:45
SLU
-
LHR
1 stop14h 10m
Multiple Airlines
Sun 12/409:20
LHR
-
SLU
1 stop14h 40m
Multiple Airlines
Deal found 12/2£892
Sun 8/312:35
SLU
-
LGW
1 stop13h 00m
Multiple Airlines
Thu 19/319:35
LGW
-
SLU
2 stops49h 30m
Multiple Airlines
Deal found 11/2£935
Wed 11/310:15
SLU
-
LHR
2 stops29h 55m
Multiple Airlines
Wed 18/311:30
LHR
-
SLU
3 stops29h 40m
Multiple Airlines
Deal found 9/2£990

Find flight deals from Saint Lucia to London

Keep the following information in mind while searching for Saint Lucia to London flight deals. Data was last updated 13 February 2026.

Round-trip from

£711

One-way from

£360

Good round-trip deal

£830 or less

Good one-way deal

£509 or less
British Airways
  • British Airways
  • 15/5-30/5
  • Nonstop
  • 17h 10m total
  • Saint Lucia to London
Search Deals
15/4
  • 15/4
  • 2 total stops
  • 35h 30m total
  • Saint Lucia to London
Search Deals
Price to beat on a round-trip flight from Saint Lucia to London (LON).
Search Deals
Price to beat on a one-way flight from Saint Lucia to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Saint Lucia to London 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 13 February 2026.
Use the filters below to find and compare flights from Saint Lucia to London that are best for you.

Fly from

Saint Lucia

Fly to

London

Route

Depart

Return

Price

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Thu 14/5

14:30-09:25

2 stops37h 55m

London Gatwick

Sat 30/5

10:45-13:40

2 stops31h 55m

£748

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Sun 17/5

14:30-17:00

2 stops21h 30m

London Gatwick

Sat 30/5

09:40-13:40

1 stop33h 00m

£768

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Sun 17/5

14:30-09:25

2 stops37h 55m

London Gatwick

Sat 30/5

10:45-13:40

2 stops31h 55m

£769

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Thu 14/5

14:30-09:25

2 stops37h 55m

London Gatwick

Tue 2/6

10:45-13:40

2 stops55h 55m

£772

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Tue 28/7

20:30-09:50

Nonstop8h 20m

London Gatwick

Sat 12/9

11:15-15:05

Nonstop8h 50m

£802

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Thu 14/5

14:30-10:45

1 stop15h 15m

London Gatwick

Wed 27/5

12:40-13:40

1 stop30h 00m

£808

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Mon 23/2

17:15-20:35

2 stops23h 20m

London Heathrow

Wed 11/3

18:00-15:25

1 stop25h 25m

£865

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 3/4

16:05-11:50

1 stop14h 45m

London Heathrow

Wed 15/4

17:40-15:25

1 stop26h 45m

£872

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Sat 14/3

15:45-09:55

1 stop14h 10m

London Heathrow

Sun 12/4

09:20-19:00

1 stop14h 40m

£892

CastriesLondon

SLU - LGW

SLULGW

Castries George F. L. Charle

Sun 8/3

12:35-05:35

1 stop13h 00m

London Gatwick

Thu 19/3

19:35-17:05

2 stops49h 30m

£935

Flights are sorted by cheapest return flights first.

Deals found on 11/2

Showing 1-10 of 53 results
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Best time to book a flight from Saint Lucia to London

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

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

Currently, September is the cheapest month in which you can book a flight from Saint Lucia to London (average of £415). Flying from Saint Lucia to London in February is currently the most expensive (average of £842). 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 LC to LON?

Find hourly flight availability from Saint Lucia to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 February 2026.

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

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 13 February 2026.
Read through reviews of airlines operating flights from Saint Lucia to London, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,736 reviews
Check prices

Boarding

6.9

Crew

7.6

Overall

6.7

Comfort

6.8

Entertainment

6.4

Food

6.4

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,736 reviews
British Airways
6.7
Okay
7,736 reviews
Check prices

Boarding

6.9

Crew

7.6

Overall

6.7

Comfort

6.8

Entertainment

6.4

Food

6.4

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

Related info for your journey

Find useful and relevant information for your journey from Saint Lucia to London. 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 Saint Lucia to London?

    There are many flights that can get you from Saint Lucia to London in 23h 20m. Fly via WestJet or Air Canada to get the fastest option. The distance from Saint Lucia to London is about 4217 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Saint Lucia to London?

    Most travelers choose Castries Hewanorra - London Gatwick, Castries Hewanorra - London Heathrow or Castries George F. L. Charle - London Gatwick when deciding on the best route from Saint Lucia to London.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Saint Lucia to London 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 Saint Lucia to London?

    Currently, September is the cheapest month in which you can book a flight from Saint Lucia to London (average of £415). Flying from Saint Lucia to London in February is currently the most expensive (average of £842). 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Croydon
Luton
Wembley
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Watford
Guildford
Chelmsford
Eastbourne
Crawley
Kingston upon Thames
Ipswich
Bedford
Romford

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Saint Lucia to London

Discover the top airline that operate flights from Saint Lucia to London. 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 13 February 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£650Average£822FlexibilityNo cancel feeOn-time70%
Search British Airways 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 Saint Lucia to London?

Cheapflights helps you search for flights from Saint Lucia to London 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 Saint Lucia to London?

Millions of users choose and trust Cheapflights to book the best flight deals from Saint Lucia to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes! Cheapflights helps users easily find flights from Saint Lucia to London with no change fees.

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

Yes, Cheapflights offers price alerts on Saint Lucia to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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