£358 Find Cheap Flights from Saint Lucia to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Saint Lucia to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Saint Lucia to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Saint Lucia to London

Fri, 25 Sep - Sat, 3 Oct
British Airways Logo
20:45 - 10:10
UVF
-
LGW
8h 25mdirect
British Airways Logo
11:15 - 15:05
LGW
-
UVF
8h 50mdirect
£766British Airways
Fri, 25 Sep - Sat, 3 Oct
British Airways Logo
20:45 - 10:10
UVF
-
LGW
8h 25mdirect
British Airways Logo
11:15 - 15:05
LGW
-
UVF
8h 50mdirect
£769British Airways
Tue, 1 Sep - Thu, 10 Sep
Air Canada Logo
15:15 - 06:35
UVF
-
LHR
34h 20m
1 stop
Air Canada Logo
12:05 - 14:15
LHR
-
UVF
31h 10m
1 stop
£800Air Canada
Tue, 1 Sep - Thu, 10 Sep
Air Canada Logo
15:15 - 06:35
UVF
-
LHR
34h 20m
1 stop
Air Canada Logo
12:40 - 14:15
LHR
-
UVF
30h 35m
2 stops
£804Air Canada
Tue, 1 Sep - Fri, 11 Sep
Multiple Airlines Logo
15:15 - 11:50
UVF
-
LHR
15h 35m
1 stop
Multiple Airlines Logo
14:05 - 13:31
LHR
-
UVF
28h 26m
2 stops
£874Multiple Airlines
Sun, 19 Jul - Sun, 9 Aug
Multiple Airlines Logo
16:40 - 09:35
UVF
-
LGW
35h 55m
2 stops
Multiple Airlines Logo
11:15 - 15:00
LGW
-
UVF
8h 45mdirect
£948Multiple Airlines
Sun, 19 Jul - Sun, 9 Aug
JetBlue Logo
16:40 - 06:30
UVF
-
LHR
32h 50m
2 stops
JetBlue Logo
08:40 - 12:53
LHR
-
UVF
33h 13m
2 stops
£1,043JetBlue
Sun, 19 Jul - Sun, 9 Aug
JetBlue Logo
16:40 - 20:45
UVF
-
LHR
23h 05m
1 stop
JetBlue Logo
08:40 - 12:53
LHR
-
UVF
33h 13m
2 stops
£1,053JetBlue
Wed, 9 Sep - Sun, 20 Sep
Delta Logo
15:32 - 16:40
UVF
-
LCY
20h 08m
2 stops
Delta Logo
13:45 - 14:08
LCY
-
UVF
29h 23m
2 stops
£1,968Delta
Wed, 9 Sep - Sun, 20 Sep
Delta Logo
15:32 - 16:40
UVF
-
LCY
20h 08m
2 stops
Delta Logo
13:45 - 14:08
LCY
-
UVF
29h 23m
2 stops
£1,970Delta
Booking Insights

KAYAK's insights & trends for flights to London

Get data-powered insights and trends into flights to London to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to London?

The average price of all round-trip flights to London clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to London is Wednesday where round-trip tickets can be as cheap as £752. On the other hand, the most expensive day to fly is Monday, where round-trip prices are £939 on average.

What is the cheapest month to fly to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to London, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to London is September, where tickets cost £421 on average for return flights. On the other hand, the most expensive months are February and January, where the average cost of tickets from Saint Lucia is £855 and £769 respectively. For one-way flights, the best month to travel is July with an average price of £197.

What is a good deal for flights to London?

If you’re looking for cheap airfare to London, 25% of our users found tickets to London for the following prices or less: From Castries £924 return.

Which is the cheapest airport to fly into in London?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in London is London Stansted Airport (STN), with an average flight price of £81.

Good to know - Cheap tickets from Saint Lucia to London

Low seasonSeptember
Cheapest flight£358
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (47% more expensive on average)
Flight from Castries to London Gatwick Airport

FAQs - booking London flights

  • Which London airport is closest to central London?

    There are 6 major airports in London. The nearest airport from London city centre is London City (8 miles), followed by London Heathrow Airport (14 miles), London Gatwick Airport (24 miles), and London Luton Airport (28 miles).

  • How much is a flight to London?

    On average, a flight to London costs £763. The cheapest price found on KAYAK in the last 2 weeks cost £580 and departed from Castries Hewanorra Airport.

  • How does KAYAK find such low prices on flights to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to London

  • Looking for a cheap flight from Saint Lucia to London? 25% of our users found flights on this route for £591 or less one-way and £924 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

Reviews of the top airline flying from Saint Lucia to London

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Saint Lucia to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 8056 reviews
6.4Food
6.4Entertainment
6.8Comfort
7.7Crew
6.9Boarding
Airline reviews

Disastrous. Creeping delays and cancelations. A routine 2-1/2 hour flight turned into a 12 hour nightmare and getting dumped at London Southend at 11pm instead of at London City. This required a £150 Uber ride to East London at 1am. We lost an entire day.

2.0 MediocreAnonymous, Jun 2026
PMI - LCY
Read more British Airways reviews

Disastrous. Creeping delays and cancelations. A routine 2-1/2 hour flight turned into a 12 hour nightmare and getting dumped at London Southend at 11pm instead of at London City. This required a £150 Uber ride to East London at 1am. We lost an entire day.

There was an older steward, he is top notch. He is very attentive at the passengers. I do not know his name. Thank you to him.

Good was great. Some of the older crew were grumpy and not customer friendly.

All good, professional service, and arrived close to on time.

This was a special trip so we booked first class. It was obviously an old plane as the seats weren't that comfortable or spacious. We were delayed 45mins taking off as the "little engine that starts the big engines doesn't work". The powered divider between myself and the next seat in first class didn't work and my electrically powdered seat didn't work so I had to move seats to try and get some sleep. Food and drink were good, crew were great. But I'll never fly with BA again.

Service and food was amazing. Aircraft configuration is weird - stare at a stranger at take off and landing, during flight someone is crawling over your seat. It was lame.

BA Canceled this flight and put us on a flight leaving Aberdeen at 8:00 PM, delaying our return to the states by a full day. The cancellation caused us expenses in both Aberdeen and London and BA was completely unhelpful on the phone and at the airport.

First time flying with them! Loved it! Specially the schedule from Miami and being able to come back directly to New Orleans :)

They lost my luggage on my way to Namibia (I was unable to review that flight as I was in the bush/off line) It took 3 days to get my bag and I had to pay $375.00 to have it transported to my location as it was over 100 Kilometers from that Airport and the local Airlink carrier would not got that far.

Unable to check in online until the morning of flight. No early baggage check available nor any BA personnel present. Poor customer service.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Hounslow
Luton
Southend-on-Sea
Slough
Winchester
Stansted
Croydon
Folkestone
Chichester
Colchester
Maidstone
Crawley
Newport
Chelmsford
Bedford
Hastings
Richmond

Everything you need to know for your flight to London

Cabin class types available on flights to London

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.