Robert Pattinson & Kristen Stewart: Back at LAX

Robert Pattinson throws a large carry on over his shoulder as he follows Kristen Stewart through LAX airport in Los Angeles on Tuesday afternoon (August 17).

The duo were spotted over the weekend in Montreal, where Kristen, 20, was filming part of her new movie, On The Road.

Kristen plays Mary Lou in the flick, which is based on the book of the same name. On The Road follows a young man who sets out to travel the roads and railways of America.

FYI: Kristen is wearing Oliver Peoples Pierson frames!