BobDDuck
Island Bus Driver
No. Well, kind of.
Both are part of interline agreements made between two carriers. And INTERLINE DISCOUNT XX% is XX% (in this case 90%) off the walk up fare. There are ID75s and ID50s out there as well. A ZONAL EMPLOYEE DISCOUNT is based off the route mileage in the "zone" you are traveling. Back in the day you could get ZED fares for a specific mileage on a specific carrier and then redeem it for whatever route you wanted that was that distance or shorter. Now, you buy a ZED fare for specific routes. There is a standard mileage buckets table that all airlines use. Under each mileage bucket, there are ZED LOW, ZED MEDIUM and ZED HIGH amounts. So for example the 600 to 1200 mile ZL might be $25, the ZM might be $30 and the ZH might be $35. Different carriers have different agreements with each other. For example, I can get a ZL on JAL, but a ZM on ANA. My parents can get ZM on JAL but ZH on ANA. United Airlines employees probably can get ZL on ANA but a Skywest employee might be limited to ZH and for the employee only. All of this information should be on your company's non rev info site.
There are two major websites that do all of this stuff. Depending on what kind of agreement you have with the other company, you'd either go to ID90.com (for ID90s) or myIDTravel.com (for ZED fares).
There are also a few one off deals that you may have. For example, we have a deal with South African Airways that allows us to buy a confirmed seat out of JFK or IAD for $600. There also used to be Station Agreements, which were made between station managers at a specific airport. This would allow an employee (normally limited to ones working or based at that airport) to travel free, or super reduced on the other carrier, but only out of that statation.
