Things are about to change for Alaska and Hawaiian Airlines customers. On Wednesday, Alaska Airlines acquired Hawaiian Airlines in a historic merger. The acquisition is the largest merger between U.S.

The vast majority of non-union jobs – plus all of Hawaiian’s 6,000 union workers — will remain untouched by Alaska’s acquisition of Hawaiian, said Joe Sprague, a former longtime Alaska executive who succeeds Peter Ingram as Hawaiian’s interim chief executive.

The merger between Alaska Airlines and Hawaiian Airlines is official, making it possible to share loyalty benefits between both carriers.