I am trying to figure out how I can carry some cold snacks on a long overseas flight. Most airline foods, even the "special orders" contain sugar. I want to carry some sliced cheese, cold vegetables, pepperoni slices and roasted nuts. (Not a lot....no more than a 1 qt container)

I've seen these "ice cube" frozen gel products (less than 3 oz). I would put the cubes in my 1 qt bag for security screening. Then move them to container with the food.

Question: I would like to take 4 or 5 of these cubes. Is the 3 oz limit a total, or can one take more than that as long as no single item exceeds 3 oz?

no single item can exceed 3 oz and all have to fit in 1 1-qt baggie. but how many you squeeze in is up to you. Applies to all liquids/gels w/ the exception of some medications, baby milk, etc.

Thanks, that was about how I interpreted it. I think I can squeeze enough in the zip bag to keep things cool for just a few hours.

How about using an insulated lunch bag? They keep food cool for hours.

I hope to find something like that, just smaller. It has to fit in my carry on.

I'd like to find something like a small insulated pack that would fit in the pocket of my bag.

Jeanne, the things you list are classic hiker foods that travel safely all day in a backpack without ice. Also, their flavors are better at room temp than chilled. I would not worry about spoilage unless I did not expect to consume them within 12 hours or so.