"While I was on the airplane" or "While I was in the airplane&quot

While I was on the airplane or
While I was in the airplane?
Which preposition is correct? :frowning:

Both are correct: you would use โ€œonโ€ when you were not particularly thinking of what the airplane is like inside, โ€œinโ€ when you were thinking of something to which the interior of the airplane is relevant, such as โ€œthe person next to me in the airplane kept squirming in his seatโ€. The distinction is quite vague; the prepositions can be used almost interchangeably.