Super important rule: flights should ALWAYS be the first thing you book, Because flight prices and availability are much more volatile than hotel or activity. Cost of flight tickets depends on availability and the prices rise over time, getting the bookings done at least 3 to 6 months in advance will help you avoid additional costs on your initial budget. If you are flexible with dates, travel during off-season, as the prices are always the lowest. Return flight tickets are better value than one way tickets. When booking a flight, always make sure to read about luggage included in the price so you won’t have unpleasant surprise at the airport. Be aware that, unless you pay an extra, you rarely can cancel or change a flight.