Originally Posted by rickair7777

This is correct. Age discrimination which is codified in federal law is legal by definition since it's the law (age 65 or age 67.99).

But we already have federal law prohibiting willy-nilly age discrimination, so absent a very specific requirement such as the CURRENT age 65 limit (or a few other very specific exceptions in federal law) no company and/or union could set their own age limit in the face of a higher federal limit. I'm 100% certain about that.

In fact I'd be happy if they raised the age to 68 the week before I retire and then my company fired me... the lawsuit win would be assured and I'd just get paid for not working anyway.

As I've said before, airlines might be able to refuse employment if they have no 100% domestic fleet but I actually seriously doubt that too, since keeping seniors off CA and MX trips on narrowbody fleets is a very reasonable accommodation (in the eyes of the law).