HisshoSushi's "Blazing California Roll" has distinctive flavors priced under $8. I was so impressed that reading the ingredients became an imperative (after my dinner/snack). That paprika-mayo-sesame seed combo was a winning choice for pollack, avocado and rice. Seductive flavors with depth should be sinful, especially at the airport.
If you're flying through Charlotte, North Carolina the CarryOn Sushi Counter is a great idea. Healthy. Quick. Flavorful.