The Wall Street Journal has a nice article about the weekly ebbs and flows of airline ticket sales. If you want to dig deeper, farecompare.com has done some longer period analysis of this topic.

Flipping the typical fare question on it’s head, below is a very cool interactive map where you input how much you want to spend and it will show you where you can fly for that much money:

Kayak.com has also graphed a few charts of average ticket prices, and provides downloadable data:

Finally, since we’re on the topic, I want to give a Chart Porn graphic design gold star to Hipmunk’s flight reservation site. It’s what selecting a flight should look like: