JetBlue, Sun Country offer unlimited-ride passes

Two airlines, JetBlue and Sun Country, are selling all-you-can-fly passes for travel this fall. I know,  neither of them flies to PHL, but JetBlue is in Newark and Baltimore, so it is of interest to those who use those airports. Here's a USA Today story about it, which needs one small correction: JetBlue didn't really 'pioneer' the pass concept last year Other airlines used to do it, both before and after the industry was deregulated in 1978; I know because I bought some of them.