JetBlue offers $599 pass for unlimited flights.

This would be awesome if they flew anywhere good. From CNN:

JetBlue Airways will offer an "all-you-can-jet" pass for $599 in which passengers can book an unlimited number of flights within a one-month span, the airline said Wednesday.

Pass holders can fly to any of JetBlue's (JBLU) 56 destinations between Sept. 8 and Oct. 8, with no seat limitations or blackout dates, the company said in a release.

Airline equities analyst Bob McAdoo, of Avondale Partners, said he "has never seen a promotion like this before."

In fact, Air Canada had a similar promotion in 2007, where it offered an unlimited flight pass starting at $1,657 per month.

Still, with JetBlue flights already slashed as low as $100, customers might have to fly 6 or 7 times in a month before they break even.