Timing can save you hundreds of dollars on airline tickets.
CheapAir.com monitored four million trips, and on average the best day to buy is 54 days before takeoff.
Buy your tickets 50 days earlier and it will cost you about $10 more.
The site says the two worst mistakes you can make are to buy too early or too late. Prices tend to go up everyday leading up to departure.
The difference between buying on the best possible day and worst possible day could cost you as much as $312 per ticket.