Originally Posted by
sokolov
Are there *A programs that have no mileage expiry?
If not, who has the most lenient rules?
I know that A3 has no expiry as long as the account stays active, without explaining when an account becomes active. So far, I think A3 miles do not expire in practice.
Is there a program that has special protection for underage members in terms of expiry?
UA miles do not expire
For others look here. It may not be up to date.-->
Miles/Points that Do and Don't Expire
With some airlines easier to keep active compared to others. Rules vary