Byler's triple scored Kyle Hunt, Brad Gerig and Trenton Brooks as the Wolf Pack scored five runs in the eighth inning to rally from a 4-2 deficit.
The Wolf Pack, now 8-9, has won two games in a row and five of its last seven. Hawaii fell to 7-10 with the non-conference loss.
Jordan Devencenzi opened the Wolf Pack eighth inning with a single. Hunt and Gerig then walked with one out to load the bases. Bryce Barger hit a sacrifice fly to left field to cut Hawaii's lead to 4-3. Brooks then singled to load the bases again and Byler followed with his second triple of the year to clear the bases.
Byler now leads the Wolf Pack with 13 RBI.
Adam Whitt pitched a scoreless eighth and ninth inning for his fourth save of the year. Whitt, who has appeared in 10 games, fanned three and has now struck out 22 and walked just five in 20 innings this year with an earned run average of 3.60.
Michael Fain started for the Pack and went 5.2 innings. Fain, making his fifth start, allowed eight hits and four runs while striking out five.
Evan McMahan, a freshman from Arbor View High in Las Vegas, allowed one hit and no runs in 1.1 innings and earned the first victory of his college career.
A two-run single by Marc Flores gave Hawaii a 2-0 lead against Fain and the Pack in the third inning.
The Pack, though, tied the game at 2-2 with a pair of runs in the fourth. Kewby Meyer doubled to open the inning. Devencenzi was hit by a pitch and Scott Kaplan sacrificed Meyer and Devencenzi to second and third. Freshman T.J. Freidl then singled in two runs with two outs for his first two RBI of his career.
Hawaii's Matt Cooper started and went six innings, allowing three hits and two runs. Andrew Jones, who was tagged with three runs in the eighth, suffered the loss and is now 0-1.
The Wolf Pack will play three more games in Hawaii through Monday night.