Since the last this question was answered there is an update.
Company called OneGo offers unlimited flights as a monthly subscription depending on where you fly and how often.
Plans pricing can be found here but they start about $1500/month for regional plans.
I think it offers more benefit for business travelers but you may take advantage of it if you plan on travelling the US for awhile.
These types of passes have not existed for many years.
JetBlue has run an “All You Can Jet” deal on a few occasions over the past few years, but it’s only been run for specific dates rates (ie, not any 30 days you want) and is fairly restrictive.
The odds of anyone bringing back something like you’ve described is fairly low due to the current state of US air travel. “Standby” travel (in the form you’ve described) is basically non-existent now days due to reduced numbers of flights resulting in much higher “loads” than in past years. For some specific routes – especially those between hubs – you could be waiting days or (at some times of year) even weeks to get a standby seat on a flight.
As you’ve stated, “Air Passes” are the current equivalent of what you’re describing, but they are priced based on segments and distance – not an “all-you-can-eat” type of deal. Star Alliance (United, Continental, US Air), OneWorld (American Airlines), SkyTeam (Delta), Alaska Airlines and others all has some form of Air Pass program – normally only available to non-US residents when bought in conjunction with an airfare to the US.
The best I can find on the subject is this:
http://seattletimes.nwsource.com/html/travel/2015386729_webairfare21.html
As far as I can tell the JetBlue has actually ended that program not so long ago but it may come back:
Credit:stackoverflow.com‘
4 Mar, 2024
4 Mar, 2024