Hi all. By the end of the year, I expect to have enough Marriott points for a vacation package and I want to have my parents fulfill their lofelong dream of going to Paris.

They are based out of MEX, so Im wondering which airline makes more sense to fly? Which one would give a better award redemption? The dates I have in mind are either May or September 2014 but I'm definitely flexible as long as its not going during winter and as much as I'd love to get first class tickets, economy will do if that's all I can afford.

Thanks in advance!