INTRODUCTION: Medical Guidelines for Airline Travel provide information that enables healthcare providers to properly advise patients who plan to travel by air. Not everyone is fit to travel by air and physicians should advise their patients accordingly. They should review the passenger’s medical condition, giving special consideration to the dosage and timing of any medications, contagiousness, and the need for special assistance during travel. In general, an individual with an unstable medical condition should not fly; cabin altitude, duration of exposure, and altitude of the destination airport are all considerations when recommending a passenger for flight.Thibeault C, Evans AD, Dowdall NP. AsMA medical guidelines for air travel: fitness to fly and medical clearances. Aerosp Med Hum Perform. 2015; 86(7):656.