Originally Posted by
VegasGambler
Actually that page specifically says that Mexican authorities only require it to be valid for the duration of your stay, which means that there is no such rule. It says that some airlines may require it, but that means that they are making up their own rules.
I read it a little differently. The language you cite is parenthetical. The language I cited is not. It can be read either way.
Regardless, no one should ever travel on a passport that's close to expiration, unless there is no other choice. It's not worth the risk.