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 flight delayed

Результаты (английский) 2:

he had to return to the hotel, as the crash of his plane was delayed

Результаты (английский) 3:

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