When we travel I hate buying expensive & high calorie food in airports also. I pack peanut butter sandwiches on some "good bread"(measured portions of course) fresh fruit,bottle water,raisins,baked chips,pretzels,canned fruit or applesauce,craisins,dried cereal.....even a bag of lite popcorn!My husband doesnt even mind..............we set and munch and "people watch".
Just planning a little ahead helps you make better choices.and making up your mind in advance is also helpful!
Hope this helps!
Cin