Originally Posted by
ironmanjt
Fare rule:
TRAVEL FROM LAST STOPOVER MUST COMMENCE NO LATER THAN
12 MONTHS AFTER DEPARTURE FROM FARE ORIGIN.
That said, almost all tickets are valid for one year from DATE OF ISSUE so that's independent of the fare rule. I wouldn't be expecting to use things more than 12 month past issue.
All airlines have to give 12 months from the first coupon flown, its IATA rule. They can restrict this by a fare max stay but not by limiting ticket validity itself. For any international travel at least.
I have seen that airlines do not follow this rule for award tickets (many give 12 months from the issue date only) but I guess this has to do with the nature such tickets.