If you are looking to take a destination vacation this year its the best summer in about a decade for you to buy flights.
According to airfare prediction site Hopper, the average flight domestically round trip will cost about $240 which is 20% or more less than it was last summer or the summer before. And if you wait until September the average flight domestically will be about 40 bucks less.
So basically to save the most money this summer, Buy in June and fly by august to get the cheapest flight this summer. And if you buy by July to fly in Setptember you will also get the lowest prices of the year.