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Cheap flights from Saint Lucia to London from £416

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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
UVF — LON
17 Apr — 24 Apr1
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 18 March 2026.

Tue 14/720:30
UVF
-
LGW
Nonstop8h 20m
British Airways
Sat 15/811:15
LGW
-
UVF
Nonstop8h 45m
British Airways
Deal found 15/3£752
Thu 30/416:15
UVF
-
LHR
1 stop14h 35m
Air Canada
Sun 31/514:05
LHR
-
UVF
2 stops53h 05m
Air Canada
Deal found 15/3£775
Thu 30/416:15
UVF
-
LHR
2 stops47h 45m
Air Canada
Thu 7/506:00
LHR
-
UVF
2 stops37h 05m
Air Canada
Deal found 16/3£791
Mon 27/415:57
UVF
-
LHR
2 stops36h 08m
Multiple Airlines
Mon 4/513:25
LHR
-
UVF
2 stops30h 02m
Multiple Airlines
Deal found 13/3£809
Mon 27/416:15
UVF
-
LHR
1 stop36h 20m
Air Canada
Mon 4/508:30
LHR
-
UVF
1 stop34h 35m
Air Canada
Deal found 13/3£815
Sun 5/416:20
UVF
-
LHR
2 stops33h 10m
Air Canada
Thu 23/406:00
LHR
-
UVF
2 stops38h 20m
Air Canada
Deal found 17/3£822
Fri 17/720:50
UVF
-
LGW
Nonstop8h 20m
British Airways
Fri 31/711:15
LGW
-
UVF
Nonstop8h 50m
British Airways
Deal found 16/3£825
Wed 8/416:20
UVF
-
LHR
1 stop36h 15m
Air Canada
Wed 15/408:30
LHR
-
UVF
1 stop35h 55m
Air Canada
Deal found 15/3£830
Tue 15/1220:50
UVF
-
LGW
Nonstop8h 15m
British Airways
Wed 30/1210:05
LGW
-
UVF
Nonstop9h 05m
British Airways
Deal found 15/3£868
Wed 6/515:57
UVF
-
LGW
2 stops36h 58m
Multiple Airlines
Mon 25/510:50
LGW
-
UVF
2 stops57h 29m
Multiple Airlines
Deal found 15/3£880
Tue 12/520:35
UVF
-
LGW
Nonstop8h 15m
British Airways
Tue 30/611:15
LGW
-
UVF
Nonstop8h 50m
British Airways
Deal found 13/3£890
Thu 30/422:20
UVF
-
LGW
Nonstop8h 05m
British Airways
Sun 31/511:15
LGW
-
UVF
Nonstop8h 55m
British Airways
Deal found 15/3£899

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 18 March 2026.

Round-trip from

£752

One-way from

£416

Good round-trip deal

£790 or less

Good one-way deal

£525 or less
British Airways
  • British Airways
  • 14/7-15/8
  • Nonstop
  • 17h 05m total
  • Saint Lucia to London
Search Deals
19/7
  • 19/7
  • 2 total stops
  • 39h 45m 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 18 March 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 - LHR

UVFLHR

Castries Hewanorra

Mon 27/4

16:15-09:35

1 stop36h 20m

London Heathrow

Mon 4/5

08:30-14:05

1 stop34h 35m

£815

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sun 5/4

16:20-06:30

2 stops33h 10m

London Heathrow

Thu 23/4

06:00-15:20

2 stops38h 20m

£822

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Wed 8/4

16:20-09:35

1 stop36h 15m

London Heathrow

Wed 15/4

08:30-15:25

1 stop35h 55m

£830

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

£832

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Tue 12/5

15:15-11:50

1 stop15h 35m

London Heathrow

Sun 31/5

17:50-14:10

2 stops49h 20m

£842

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Tue 12/5

20:35-09:50

Nonstop8h 15m

London Gatwick

Tue 30/6

11:15-15:05

Nonstop8h 50m

£890

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Tue 12/5

20:35-09:50

Nonstop8h 15m

London Gatwick

Sun 31/5

11:15-15:10

Nonstop8h 55m

£890
Fastest return journey

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Thu 30/4

22:20-11:25

Nonstop8h 05m

London Gatwick

Sun 31/5

11:15-15:10

Nonstop8h 55m

£899

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Thu 16/4

15:57-15:00

2 stops18h 03m

London Heathrow

Sat 18/4

15:50-14:37

2 stops27h 47m

£954

CastriesLondon

UVF - LGW

UVFLGW

Castries Hewanorra

Sat 2/5

20:35-09:50

Nonstop8h 15m

London Gatwick

Sat 9/5

11:15-15:10

Nonstop8h 55m

£958

Flights are sorted by cheapest return flights first.

Deals found on 16/3

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6

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 £421). Flying from Saint Lucia to London in February is currently the most expensive (average of £861). 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 18 March 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 18 March 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
7,800 reviews
Check prices

Boarding

6.9

Comfort

6.8

Food

6.4

Crew

7.6

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

CAI - LHR

We purchase a Business Class trip with certain expectations. We are both elderly and long haul trips are difficult without a certain level of comfort The leg with American Airlines was amazing and made the trip enjoyable from crew to seats. The leg on British Air was beyond our lowest expectation. The business class upgrade (expensive) was the same main cabin seat without anyone sitting in the middle seat, plus no charge for alcohol. Beyond that nothing. There was no entertainment on the long get 5-6 hours. Boarding early is not worth the upgrade charge and I am not an alcoholic, but in truth the alcohol might have made the discomfort more bearable. The fact that the trip had few passengers was a negation that the word is out that one haul trips on British Air is a huge mistake. The company that Kayak represents, Underpricer, is one we will never use again. We spent 4 hours at the airport on our first leg out of Charleston trying to get tickets rescheduled. Apparently the agents don't understand the 45 min rule prior to departure. Finally got the agent to understand the process and we did make it thru to Cairo. On the return, I rechecked with Kayak AND Underpricer. Both confirmed that there was no problem. Got to Cairo checkin for checking luggage and it started. Agent check luggage thru to Charleston, which she should not have done without the tickets to back it up. She did NOT tell us that we didn't have any tickets, but told us to get them at Heathrow. At Heathrow, we found we had NO tickets in their system. We were able to get Business Class to Charlotte, but not to Charleston. Lucky us we, got the seats next to the toilet. The ones no-one else wanted and not the ones we had reserved with Underpricer. Now picture two 80 year olds doing a 23 hour trip without any of the ease that we paid for in the Business Class category.
British Airways
6.7
Okay
7,800 reviews
British Airways
6.7
Okay
7,800 reviews
Check prices

Boarding

6.9

Comfort

6.8

Food

6.4

Crew

7.6

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

CAI - LHR

We purchase a Business Class trip with certain expectations. We are both elderly and long haul trips are difficult without a certain level of comfort The leg with American Airlines was amazing and made the trip enjoyable from crew to seats. The leg on British Air was beyond our lowest expectation. The business class upgrade (expensive) was the same main cabin seat without anyone sitting in the middle seat, plus no charge for alcohol. Beyond that nothing. There was no entertainment on the long get 5-6 hours. Boarding early is not worth the upgrade charge and I am not an alcoholic, but in truth the alcohol might have made the discomfort more bearable. The fact that the trip had few passengers was a negation that the word is out that one haul trips on British Air is a huge mistake. The company that Kayak represents, Underpricer, is one we will never use again. We spent 4 hours at the airport on our first leg out of Charleston trying to get tickets rescheduled. Apparently the agents don't understand the 45 min rule prior to departure. Finally got the agent to understand the process and we did make it thru to Cairo. On the return, I rechecked with Kayak AND Underpricer. Both confirmed that there was no problem. Got to Cairo checkin for checking luggage and it started. Agent check luggage thru to Charleston, which she should not have done without the tickets to back it up. She did NOT tell us that we didn't have any tickets, but told us to get them at Heathrow. At Heathrow, we found we had NO tickets in their system. We were able to get Business Class to Charlotte, but not to Charleston. Lucky us we, got the seats next to the toilet. The ones no-one else wanted and not the ones we had reserved with Underpricer. Now picture two 80 year olds doing a 23 hour trip without any of the ease that we paid for in the Business Class category.

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 20m. Fly via Air Canada, British Airways, or Delta 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 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 £421). Flying from Saint Lucia to London in February is currently the most expensive (average of £861). 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
Wembley
Croydon
Luton
Hounslow
Slough
Gatwick
Ilford
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Eastbourne
Romford
Ipswich
Bedford
Chelmsford
Southend-on-Sea

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 18 March 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£681Average£863FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Saint Lucia to London?

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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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