Most of us don't normally think of airline food as fine dining but that's likely because we usually sit at the back of the plane and not at front. (rumor has it food in business and first class can be quite good!) Flight attendants are pretty in tune with what's available from their caterers, especially given how many hours a year they're in the air.
An interesting article on some flight attendants favorite in-flight foods is available at this link from Huffpost Taste.