Sit/fly on a plane or in a plane

OMG! I have just got the same doubt now.

Fly on a plane.
Sail on a ship.
Ride in a car.
On a bus.
On a train.

To enter, you can walk onto a ship, a plane, a ferry boat, a bus and a train.
You cannot walk onto a car.

However, if you are inside a compartment, and the vehicle is at a standstill, then it's common to say "in."

He was trapped in the bus.
The Korean students were in the sunken

Thanks for answering. Can I say "I am sitting in the plane right now"?

fatimah0786"I am sitting in the plane right now"?

Yes. "sitting" is more often followed by "in" meaning inside. I assume that the plane is in line to take off (moving slowly), or parked at the gate.

Compare: I am sitting on a stool.
I am sitting in a phone booth.

Thanks for the reply. I've heard someone once say "While I was sitting on the bus ... ", is 'sitting on' possible as far as means of transportation are concerned?

Sitting on a bus.