A four hour flight inst bad. But in my case when I travel from New England and go direct, I am looking at 5 to 6 hour flights. Add in that I am an hour away from the airport, and quite frankly some airports and terminals (Ahem, PVD) kinda lack decent food options, I figure it might be an idea to take something along that I really want to eat and will break up my trip a little bit. Why not make the experience as pleasant as one can. And it seems more and more airlines are getting away from meals being offered for free on even international flights.

I do sometimes bring snacks along with me, I have tried cheese but that ends up getting all icky sitting in a bag for so long. I have always been afraid of the condiments packs, as they are technically gels. That has kinda dissuaded me from the salad approach as well (dressing). But, maybe one just has to do a little selective borrowing from the food court counters.