Consult a Doctor Before a Long FlightSearch 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.If you have poor circulation or are in ill health, consult with a doctor before embarking on any long flight. Long flights and changes in time zones are very stressful on the body.