Flight Level 250 corresponds to how many feet?

• A. 25,000 feet
• B. 20,000 feet
• C. 30,000 feet
• D. 2,500 feet

Answer: (A)

Flight levels are measured as pressure altitude using a standard atmosphere. When the altimeter is set to the standard pressure of 29.92 inHg, the digits after the flight level represent hundreds of feet. So a flight level of 250 corresponds to 25,000 feet. In other words, with standard pressure, the pressure altitude is 25,000 feet; actual height above sea level can vary with weather, but the flight level uses the standard reference.