V.T.
I usually give my daughter some Motrin for the body aches, and that seems to help a lot. You can also try some simple saline for her nose. As for her ears on the plane, I'm lucky enough that my daughter doesn't get affected, but just to be safe, I have her eat a snack during take off and landing. Chewing gum is very effective to help prevent ear popping, so that's why I give her a snack to simulate chewing up since she is too young for gum.