He portrayed Rico in the Disney Channel series Hannah Montana, Biaggio in the 2013 Sundance film The Kings of Summer, Cokestraw in the 2019 SXSW comedy-drama The Wall of Mexico, Bigfoot in the Colombian war drama Monos, and Norm MacLean in the Amazon Prime Video drama series Fallout.

[6] He appeared in music videos for Pearl Jam,[citation needed] the Jonas Brothers (for their song "SOS"), and Parmalee.

He appeared on the ESPN family of networks as a roving 'sideline' reporter conducting interviews with fans and players at the 2009 Little League World Series.

[9] That year, he appeared in the film Ender's Game,[10] starring with Asa Butterfield, Abigail Breslin and Harrison Ford.

[14][15] In March 2019, Arias played Poe in the CBS film Five Feet Apart,[16] starring with Cole Sprouse.