This entirely depends on where you are flying to. It can be as few as 20 minutes or as much as 18 hours in the air.
240 miles is always 240 miles, no matter where you are.But, if you are asking how long it takes to travel 240 miles on an airplane, then it depends on the speed (or perhaps the type) of the airplane.
That depends on your speed.
About 43 minutes.
At 500 mph, it would take an airplane 4 hours to fly 2000 miles.
At full speed an airplane can travel 3500 miles with the wind in 5 hours but it requires 7 hours to travel the same distance against the wind?
At 550 miles per hour, it would be .15 miles per second.
From TN to South Korea, it is about 6900 miles when traveling through a passenger airplane. It was thus take 13.5 hours to travel by plane.
That depends on the speed at which one is traveling.
From which country ?
18 720 miles
1000 Kilometers per hour (600 miles per hour)- faster than most airplane travel.
Speed of Sound = 343.14 m/s 4 miles = 6437 metres 6437/343.14 = 18.76 seconds