£705 Cheap flights to Saint Lucia

British Airways, TUI Airways and Finnair are the top three most popular airlines that fly to Saint Lucia according to our data. British Airways is the first choice among our users, with 74% of people opting to fly with this airline when travelling to Saint Lucia. Keep in mind that there are 9 different airlines that fly to Saint Lucia on a routine basis, so you have a few additional options to choose from.

The most popular airport in Saint Lucia to fly to is Castries Hewanorra, based on our data. In the past 12 months, 75% of all momondo users who travelled to Saint Lucia chose to fly into Castries Hewanorra airport, which is located in the city of Castries.

Flights to Saint Lucia have been found on momondo for as low as £473 per ticket recently. However, the average price tends to be £993 and anything for £805 or less is a good deal. £2,061 is the most expensive flight we’ve seen in the past week, though you may be able to avoid this price depending on what airport you fly from, what airline you choose, and how far in advance you book your flights.

If your travel plans are flexible and you’re looking to save money on flights to Saint Lucia, then be sure to book your departure on a Tuesday. Flying out on a Tuesday, as well as a Monday, is your best option. Departing on a Saturday tends to be the most expensive day of the week to fly to Saint Lucia.

Prices for flights to Saint Lucia are updated daily.

There are 11 operators available for flights to Saint Lucia as of December 2025.

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Saint Lucia.

The required travel and health documents for your Saint Lucia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Saint Lucia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.