The Association of Flight Attendants-CWA (AFA) has voted to approve a tentative agreement with Horizon Air management, the association said.
Flight Attendant contract negotiations began six months ago, when Horizon Air management asked for changes to the contract that the company said were needed to bring jets to the airline.
The new one-year extension will cover almost 600 flight attendants and only goes into effect if Horizon is awarded regional jet flying for Alaska Airlines.
It includes bidding software updates and per diem and pay increases. Flight attendants previously ratified a five-year contract on July 18, 2013.
The Association of Flight Attendants includes nearly 60,000 flight attendants and is part of the 700,000-member strong Communications Workers of America (CWA), AFL-CIO.