I've been getting this pre-made chicken salad from whole foods- they have many flavors and it's very good. Kind of expensive- about $11 per pound, but a pound of it lasts me a 4 day trip.

I get tortillas, and make chicken salad tortillas during the day. For dinner, I like to have hot food, so I bring a meal sized tupperware of frozen casserole for each night, that I freeze solid at home. Microwave that, and voila.

Simple recipe-

1 can of cream of mushroom soup, one pack of lipton dry onion soup mix, 1 cup of rice, 2 cups of water... mix well in a large baking dish. Cut up chicken breast (thawed), season, throw on top. Cover with foil- bake at 350 degrees for 45 minutes, remove foil, bake an additional 15 minutes.

Great tasting casserole that freezes and reheats great for the road- that would be enough for a 4 day (using the chicken salad as lunch/snacks throughout the day).

I can spend about $20 on food for a 4 day, not the cheapest, but you're not going to beat $5 a day on airport food. If I could just reliably keep it cold with such factors as no freezer in the hotel, broken ice machines, etc...

I really wish I could think of a way to shape my ice bag when I freeze it solid. Hmmm...