Free flights to the continental United States and I think Alaska/Hawaii not sure have yet to try those. We operate on a space available basis. If there is a seat you can get it. We also have different tiers for non revenue. D1 (6 per year) means highway priority, D2 is second highest, D3 is final tier also known as guest passes for your friends/ family also you. International they have an international fee which is typically just part of the arrival tax. We have a page on jet net which allows us to list ourselves on a flight and see the number of seats available on it.

Then 24 hours before a flight we checkin and see what priority we are on the standby list, the quicker you check in the higher you are on list. If your a pilot you have jump-seat policies same goes to FAs.

Easiest flights to get seats on are typically low density middle of the week flights to regional towns like Tallahassee (where I commute out of) on envoy, piedmont, psa, skywest, air Wisconsin etc.

If you don’t get on, you can ask for a rollover and get placed above the next group of people, if your feeling really adventurous you can try to stand by for a connecting flight and get something call through privilege which sends you above your category, IE if your a d1 and you go to MCO and connect on to an LAX flight you’ll get top of the D1 priority list

You can also purchase an ID90 and fly on other carrier metal, with equivalent of a d3.

I’m still fairly new the non rev system I have only been flying for AA(envoy) for about half a year, so I’m still not entirely familiar with it myself.

Small edit: Good luck standing by to any cool places tbh, it’s almost impossible, you’ll be sitting at the airport for hours upon hours waiting for one seat to a place like LAX to open up, even worse for international flights half of the time if I’m headed to high density city like LAX, JFK/LGA, or even DFW, I’m up at 4 in the morning trying the 6 am flights and usually don’t even get a seat until the 3 pm flights sometimes not all.