Young hit 7-of-11 shots from the field for the Ducks (10-0), who shot 47.8 percent from the field and knocked down 12-of-19 shots from 3-point range.
Mike Moser added 15 points for Oregon and Damyean Dotson added 14. Oregon sophomores Dominic Artis and Ben Carter returned to the lineup after serving a nine-game suspension and scored five and four points respectively.
Oregon led 43-34 at halftime and cruised in the second half.
UC Irvine (6-6) was led by Will Davis' 20 points. Chris McNealy contributed 14 and 7-foot-6 freshman Mamadou Ndiaye scored seven points to go with seven rebounds and four blocked shots.