Flying is often associated with comfort, but what you wear can affect much more than how relaxed you feel during the trip. Flight attendants, airport workers, and travel experts regularly see passengers make clothing choices that create avoidable safety, hygiene, and comfort problems. While there is no universal airline dress code for most travelers, certain items can increase risks during long flights or unexpected emergencies. Knowing what to leave in your suitcase can make your journey safer, more comfortable, and less stressful from takeoff to landing.