Following up: PHL-PHX last week:
1-hour pass, $7.00
2-hour plus one free, $14.00
Gogo flight pass (just this flight), $14.95
All-day pass (any USAirways flight on the same day), $20.95
USAirways monthly pass, $39.95
Gogo unlimited monthly, $49.95
Be sure to press the "View All Passes" button to get access to these.