Sun Airway is an American music duo consisting of Jon Barthmus and Patrick Marsceill, formerly of The A-Sides. The duo plays a style of alternative dance, indietronica, dream pop, alternative rock, indie pop, indie rock, and pop rock music. Sun Airway was established in Philadelphia, Pennsylvania in 2009, while they disbanded in 2013. The duo released two studio albums, Nocturne of Exploded Crystal Chandelier (2010) and Soft Fall (2012), both with Dead Oceans. In 2017, they self-released their third album, Heraldic Black Cherry.