8. Fly while suffering from a congested nose.
Your ears are under a lot of strain when you have a congested nose, which could cause harm. Although no one is requesting that you stay at home because you have a cold, you should still have some vasoconstrictive drops on hand for when that happens.Sinusitis and maxillitis, however, are too severe for flights. You should definitely see a doctor if you are unable to change your flight.