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Cheap flights from Saint Lucia to London from £373

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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
UVF — LON
16 Jul — 23 Jul1
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 16 June 2026.

Thu 10/1219:20
UVF
-
LGW
Nonstop8h 15m
British Airways
Thu 14/112:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Deal found 15/6£742
Fri 13/1120:05
UVF
-
LGW
Nonstop8h 15m
British Airways
Fri 20/1113:15
LGW
-
UVF
Nonstop9h 05m
British Airways
Deal found 11/6£744
Tue 15/920:25
UVF
-
LGW
Nonstop8h 25m
British Airways
Wed 17/212:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Deal found 12/6£751
Fri 25/920:45
UVF
-
LGW
Nonstop8h 25m
British Airways
Sat 3/1011:15
LGW
-
UVF
Nonstop8h 50m
British Airways
Deal found 14/6£759
Thu 10/1217:25
UVF
-
LHR
1 stop35h 05m
Air Canada
Thu 14/118:00
LHR
-
UVF
1 stop26h 25m
Air Canada
Deal found 15/6£791
Thu 10/922:00
UVF
-
LGW
Nonstop8h 25m
British Airways
Wed 3/212:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Deal found 11/6£796
Thu 10/1217:25
UVF
-
LHR
2 stops23h 10m
Air Canada
Sun 17/111:10
LHR
-
UVF
1 stop33h 15m
Air Canada
Deal found 15/6£813
Mon 7/1217:25
UVF
-
LHR
2 stops33h 45m
Air Canada
Tue 12/111:10
LHR
-
UVF
1 stop33h 15m
Air Canada
Deal found 15/6£815
Sat 12/920:25
UVF
-
LGW
Nonstop8h 25m
British Airways
Sat 13/212:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Deal found 11/6£828
Sun 1/1119:20
UVF
-
LGW
Nonstop8h 15m
British Airways
Sun 8/1112:30
LGW
-
UVF
Nonstop9h 05m
British Airways
Deal found 13/6£833
Sun 1/1117:25
UVF
-
LHR
1 stop35h 05m
Air Canada
Sun 8/1111:10
LHR
-
UVF
1 stop33h 15m
Air Canada
Deal found 13/6£843
Fri 11/915:15
UVF
-
LHR
1 stop15h 35m
Air Canada
Thu 4/218:00
LHR
-
UVF
1 stop26h 25m
Air Canada
Deal found 11/6£894

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 16 June 2026.

Round-trip from

£742

One-way from

£373

Good round-trip deal

£911 or less

Good one-way deal

£583 or less
British Airways
  • British Airways
  • 10/12-14/1
  • Nonstop
  • 17h 20m total
  • Saint Lucia to London
Search Deals
12/7
  • 12/7
  • 3 total stops
  • 45h 25m 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 16 June 2026.
Use the filters below to find and compare flights from Saint Lucia to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Thu 10/12

19:20-07:35

Nonstop8h 15m

London Gatwick

Thu 14/1

12:30-17:35

Nonstop9h 05m

£742

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Tue 15/9

20:25-09:50

Nonstop8h 25m

London Gatwick

Wed 17/2

12:30-17:35

Nonstop9h 05m

£751

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Fri 25/9

20:45-10:10

Nonstop8h 25m

London Gatwick

Sat 3/10

11:15-15:05

Nonstop8h 50m

£759

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Tue 15/9

20:25-09:50

Nonstop8h 25m

London Gatwick

Mon 1/2

12:30-17:35

Nonstop9h 05m

£796

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sun 13/12

17:25-08:30

1 stop35h 05m

London Heathrow

Tue 12/1

18:00-16:25

1 stop26h 25m

£813

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Sat 12/9

20:25-09:50

Nonstop8h 25m

London Gatwick

Sat 13/2

12:30-17:35

Nonstop9h 05m

£828

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 13/11

17:25-06:30

2 stops33h 05m

London Heathrow

Fri 20/11

13:45-16:25

2 stops54h 40m

£941
Fastest return journey

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Fri 17/7

20:50-10:10

Nonstop8h 20m

London Gatwick

Fri 31/7

11:15-15:05

Nonstop8h 50m

£944

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Tue 1/9

15:15-11:50

1 stop15h 35m

London Heathrow

Fri 11/9

14:05-13:31

2 stops28h 26m

£971

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Mon 7/12

16:53-11:30

1 stop14h 37m

London Heathrow

Fri 15/1

14:30-13:47

1 stop27h 17m

£978

Flights are sorted by cheapest return flights first.

Deals found on 13/6

Showing 1-10 of 45 resultsSorted by cheapest first
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5

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 £843). 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 16 June 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 16 June 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
8,052 reviews
Check prices

Entertainment

6.4

Overall

6.7

Boarding

6.9

Crew

7.7

Comfort

6.8

Food

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.
British Airways
6.7
Okay
8,052 reviews
British Airways
6.7
Okay
8,052 reviews
Check prices

Entertainment

6.4

Overall

6.7

Boarding

6.9

Crew

7.7

Comfort

6.8

Food

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.

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 8h 15m. Fly via British Airways, Air Canada, or American Airlines to get the fastest option. The distance from Saint Lucia to London is about 4223 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 Heathrow 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 £843). 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
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Watford
Guildford
Romford
Ipswich
Borehamwood
Folkestone
Southall

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 16 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£677Average£865FlexibilityNo 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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