The Lucky Ones. This little-known gem with Tim Robbins, Rachel McAdams, and Michael Peña is sort of a road trip with heart. Hard to describe, but I’ll bet you’ll be glad you watched it.
A second vote for Easy A. It was better than I expected.
I also caught The Fantastic Mr. Fox recently. Quite charming and fun.
Wow - I am getting quite a list here! (ignoring some that are obvious jokes - smartasses!)
I’m in higher ed - technically I can google anything from work! 
Take into consideration the people who may be sitting around you. I recall sitting in an aisle seat on a flight back to Orlando and the guy in the middle seat next to me was watching Boogie Nights on his laptop. I don’t think the family in the row behind me appreciated it.
Eh, if I have to put up with a crying baby or toddler kicking the back of my seat they can put up with having their kids exposed to adult themes & situtations.
My thoughts exactly. I will be using headphones and won’t be watching porn, but I’m not going to avoid R-rated movies.
Did anyone say Executive Decision or Air Force One yet?