Two airlines - Sun Country Airlines and JetBlue - are offering unlimited flight passes for limited travel dates between September and October, 2010.
1. JetBlue - All You Can Jet Pass
JetBlue's popular unlimited flight passes are back. On sale until it sells out, the All You Can Jet Pass is good for travel between September 7 - October 6, 2010. You can literally fly as much as you can take for a month.
This year's incarnation comes in 2 forms - $699 for any day of the week (updated: this is sold out), and $499 for unlimited flights except for Fridays and Sundays (updated: this is sold out).
2. Sun Country Airlines - Fall Free For All
Sun Country Airlines has also introduced an unlimited flights pass. Its Fall Free for All is good for travel between September 7 to October 13. Book by August 24, 2010. The pass is $499 and you are required to book flights at least 3 days in advance. Please note too that Sun Country's main hub is Minneapolis/St Paul so if you are starting in another city you are likely to connect through their main hub enroute.