I am pretty experienced when it comes to low priced long distance air travel. It's a pain. But I have some advice:
1. Always bring one small bottle of high quality chili sauce. Tabasco will do. Does wonders on the tasteless food on board the plane. And some trivia: the heat of chili is measured on the scoville scale. And the Bhut Jolokia was recently certified as the hottest of them all.
2. Invest in some high quality noise canceling headphones. I am using something like this. But there are lots of them.
Canon EOS400D, Canon EFS 17-55 2.8 @ 55mm
f/7.1, shutter speed ...