Im gonna be in there for a gazillion hours. xD
Is there any place I can print some puzzles or brainteasers, too?
Get a book of Soduku or word searches or crossword puzzles at any supermarket. Also bring an iPod and a portable DVD player. If you have a laptop, bring that too to watch DVDs. If you like stuff like gimp or hemp, bring some so you can make bracelets or something. If you’re into video games, bring a DS or PSP or whatever.
http://brainden.com/
http://www.mirroreyes.com/crossword/
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iPod, portable DVD player, books, magazines, and anything else small that you like, as long as it doesn’t have sharp edges or is more than 6 fl.oz. 
I’m sure you could just Google free printable puzzles and find a ton of stuff. Have fun on your flight for a gazillion hours!!