With Netflights, it's easy to find a great deal on flights from St Lucia Hewanorra International Airport to London Heathrow.
Bargain-hunters should check when public holidays are in London, as prices are likely to be higher.
At the other end of the spectrum, flights in high season are very expensive. But you might be able to get a good last-minute deal. Whenever you fly, you'll have plenty of choice.
Did you know you can compare accommodation prices too? If you need somewhere to stay in London, take a look at our hotel options to get an idea of prices.