Swiss Airlines Flight Rules Explained- 1 8oo--942~o5~12 Understanding Swiss Airlines flight rules before you travel can help you avoid unnecessary surprises at the airport. Whether you're booking a ticket, changing your itinerary, checking baggage, or preparing for international travel, knowing the airline's basic rules makes the journey much smoother. The exact conditions depend on your fare type and destination, so it's always worth reviewing your booking details before departure.