Booking windows: Usually you can book your flight 21 days, 14 days and 7 days in advance, and the airfares go up the closer is the day of departure. Alternate airports: Main large airports are usually more expensive than the smaller ones located outside of large cities. However, remember that it will cost you extra money to get to the distant airport. Time: Taking an indirect flight with stops usually offers lower airfares. However, you have to be sure that you have the time to spend at the intermediate airport. Travel packages: If you need an accommodation and car rental besides plane tickets, getting all these items as a package will often save your money rather than buying them separately.

Keeping all this in mind will help you get really advantageous airfares.