Ему пришлось вернуться в гостиницу,

Ему пришлось вернуться в гостиницу, так как вылет его самолета задерживался.

Результаты (английский) 1:

He had to go back to the hotel because his plane was delayed departure.

Результаты (английский) 2:

He had to go back to the hotel, as the crash of his plane was delayed.

Результаты (английский) 3:

he had to go back to the hotel, as the fly his plane was delayed.