voyage
US /ˈvɔɪ.ɪdʒ/
UK /ˈvɔɪ.ɪdʒ/

1.
a long journey involving travel by sea or in space
:
•
The ship embarked on a long voyage across the Atlantic.
•
The astronauts prepared for their voyage to Mars.
a long journey involving travel by sea or in space