How long does it take for a military plane to be built?

Answer 1

There are various things you have to take into consideration on "how long" it takes to build a military plane.

There are various aircraft for various uses or "missions."

Fighter can and do have various missions. It can be aircraft to aircraft or ground support. Or they can even be rigged to shoot an orbiting object in space.

Then there are transportation aircraft. You have the C-130 that's been in service for many decades now. Then you have the combat support version that has weapons on it.

You also have the C5A. It has two levels. One for things like vehicles or supplies. The second floor for passengers.

Depending upon the aircrafts intended use decides how long it will take to build it.

In this day and age due to economics aircraft and most military equipment must be able to perform various missions.

It may take well over a year for an aircraft to be built. Now, if a country is at war they may have the builders work around the clock to produce aircraft. That would cut the time down to a third. Less if they are working on the weekends too.

Since there are so many variables to this answer you can't come up with a standard answer.

You have to look at each aircraft individually.