Cheap flights from London Heathrow Airport to Saint Lucia from £448
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Saint Lucia departing on 19/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Finnair flights from London Heathrow Airport to Saint Lucia
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How to get the cheapest flight ticket from London Heathrow Airport to Saint Lucia
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Saint Lucia?
The month of October is, on average, the cheapest month to fly to Saint Lucia from London Heathrow Airport, with most prices found around £492. If you don’t want to visit Saint Lucia in October, then you should wait until September to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £503.
What is the cheapest day to depart on your flight to Saint Lucia?
The cheapest day to depart on your flight to Saint Lucia is on a Tuesday when prices can be found for as low as £514. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £671.
What is the cheapest London Heathrow to Saint Lucia flight route?
Fly from London Heathrow to Castries Hewanorra for the best London Heathrow - Saint Lucia flight prices
What cabin class options are available on London Heathrow to Saint Lucia flights?
There are 2 cabin classes available to choose from on London Heathrow to Saint Lucia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from London Heathrow to Saint Lucia?
Air Canada, WestJet, and KLM are the most popular carriers operating from London Heathrow to Saint Lucia
Which airlines fly to Saint Lucia?
British Airways, Virgin Atlantic and Finnair are the top three most popular airlines that fly to Saint Lucia from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 43% of people opting to fly with this airline when travelling to Saint Lucia. Keep in mind that there are 5 different airlines that fly to Saint Lucia on a routine basis, so you have a few additional options to choose from.
Cheap London Heathrow Airport to Saint Lucia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Saint Lucia
When did momondo last update prices for flights from London Heathrow Airport to Saint Lucia?
Prices for flights from London Heathrow Airport to Saint Lucia are refreshed on a daily basis.
How many operators does momondo search for flights from London Heathrow Airport to Saint Lucia?
The number of operators available for flights from London Heathrow Airport to Saint Lucia is 5 as of May 2025.
How old do you have to be to fly from London Heathrow Airport to Saint Lucia?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Saint Lucia.
What documentation or ID do you need to fly to Saint Lucia?
The travel and health documents you'll need for your trip to Saint Lucia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint Lucia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to Saint Lucia?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to Saint Lucia is Boeing 777, representing 48.31% of all bookings. The subsequent popular models are Airbus A330-900neo at 43.00%, Boeing 787-9 Dreamliner at 3.86%, and Airbus A350-1000 at 1.45%.
Best airlines flying from London Heathrow Airport to Saint Lucia
Compare and see reviews for airlines that fly from London Heathrow Airport to Saint Lucia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £427 | Free Cancellation | Rating 6.6 6,846 reviews | |||
| PriceFrom £435 | Free Cancellation | Rating 7.4 643 reviews | |||
| PriceFrom £514 | Free Cancellation | Rating 7.8 1,334 reviews | |||
| PriceFrom £516 | Free Cancellation | Rating 7.0 9,252 reviews | |||
| PriceFrom £645 | Free Cancellation | Rating 7.6 1,275 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Saint Lucia?
Finding the right flight to Saint Lucia from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Saint Lucia quick and easy, saving you time and money.
Can I find flights from London to Saint Lucia with flexible booking policies on momondo?
All flight searches from London to Saint Lucia on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from London to Saint Lucia?
momondo helps you find the best flight between London and Saint Lucia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from London to Saint Lucia right now. Can momondo alert me if prices change?
If you are not ready to book a flight from London to Saint Lucia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Saint Lucia and let you know when they change.