The Teamsters union says the Horizon Air pilots it represents have approved a new five-year contract with the Seattle-based regional carrier.
The union's Local 1224 says 60 percent of the pilots voting approved the agreement in the ballot count Tuesday.
Horizon and the Teamsters reached a tentative agreement in September after four years of talks. The two sides asked a federal mediator for help last January.
The union says the agreement improves work conditions, scheduling and pay protections, and includes "significant" bonuses for ratification.
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Horizon is part of Alaska Air Group, which includes Alaska Airlines. Horizon serves 45 cities in the West, Canada and Mexico.