Justin Theroux: Buff Biceps at LAX!

Justin Theroux shows off his bulging biceps in a polo shirt as he makes his way through LAX Airport on Thursday (July 26) in Los Angeles.

The 40-year-old actor landed on a flight from New York City and met up with his driver as he exited the airport.

PHOTOS: Check out the latest pics of Justin Theroux

Justin has been spending time in the Big Apple over the last couple of weeks while his girlfriend Jennifer Aniston films a movie in North Carolina.

10+ pictures inside of Justin Theroux at the airport…