We've made it easier for you to find a cheap deal, by finding all the flights from London Heathrow to St Lucia George F L Charles Airport. We've put them all in one place so you can compare you options.
Bargain-hunters should check when public holidays are in St Lucia, as prices are likely to be higher.
But the prices fluctuate throughout the year. If you want to go during peak season, it's best to book early. Or you could try to find a last-minute deal.
Did you know you can compare accommodation prices too? If you need somewhere to stay in St Lucia, take a look at our hotel options to get an idea of prices.