While senior airfare discounts are not as common as they used to be, some airlines still offer them. The most common is for 10 percent off of the full fare price of a flight, with the age eligibility ranging from 50-65.

There is no upper age limit that prevents senior citizens from flying, provided they are medically fit to travel. However, the term "senior citizen" in aviation usually refers to the age at which passengers become eligible for special discounts, which is almost universally 60 years or older. Airlines like Air India and IndiGo often offer 6% to 10% discounts on base fares for seniors 60+, while some U.S. carriers like United or Delta offer senior fares on very specific routes for those 65+. From a health perspective, most airlines advise seniors to consult a doctor if they have chronic heart or respiratory conditions, but there is no "cutoff" age where one is grounded. Some airlines may require a "Fit to Fly" certificate if a passenger appears extremely frail or has a visible medical dependency (like portable oxygen), but generally, as long as you can navigate the airport or arrange for assistance, you are welcome to fly regardless of how many candles are on your birthday cake.