There are at least six artists and bands who have performed with the name "Passenger". The following order is loosely based on the last.fm statistics.
These are photos from concerts where Passenger played, so they may be of other bands that played the concert as well.
Passenger Dec 12, 2013 Sydney, New South Wales, Australia Uploaded by Lizzy Fredericks
Passenger / Stu Larsen Oct 27, 2013 Amsterdam, North Holland, Netherlands Uploaded by Belieber Dianaa