В оригинале полёт тоже упоминается.

"You got there? You got Hermione's owl?"
"We must have crossed in midair.

"Well, I got back all right," said Hermione. "I brought Ron round -- that took a while -- and we were dashing up to the owlery to contact Dumbledore when we met him in the entrance hall -- he already knew -- he just said, 'Harry's gone after him, hasn't he?' and hurtled off to the third floor. "