Build travel around deals
You don’t need to have one specific destination and wait for the airline tickets to be cheaper. Why not keeping track of the prices and plan your vacation on the cheapest plane tickets you could find?
There are many websites that could help you keep track of great deals like NextVacay.com and Secretflyer.com. They will charge you a one-time fee for email alerts, and then you will have a permanent service that will keep you aware of all the amazing airline deals.