Take your VitaminsSearch for around the world ticketFAQ: How do I use this trip planner?Start by typing your departure city in the box above. Suggestions will appear as you type.Drag and drop destinations to change the order of your trip.Your return city can be the same as your starting city, or you can change it.After adding your cities, click Next to continue planning your trip.Even if you don’t take vitamins, pack a few for the days following a long flight. Because the air is continually recycled, you are more susceptible to catching colds and other viruses.