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See past reports on Santa Rosa airport airline passenger data.

Passenger traffic among the four commercial airlines serving Charles M. Schulz–Sonoma County Airport rose last month by 4.7% from a year before.

They carried 39,536 passengers via the Santa Rosa airport in May, up from 37,770 in May 2018, according to data from the county-run airport. Year to date, the rise was more gradual, up 1.7% to 160,741 passengers.

American Airlines had a 12.8% increase in passengers in the first five months of this year from that pace a year before, the largest increase among the carriers serving the regional airport. In the May-to-May comparison, the airline’s passenger count jumped by 90%, serving 7,569 passengers last month.

American began serving Santa Rosa in February 2017, starting with nonstop service to Phoenix-Sky Harbor International. This year, the world’s largest airline has added two more destinations from Wine Country: Daily seasonal flights to Southern California began May 3, and service to Dallas-Fort Worth launched June 6.

Alaska Airlines, the airport's largest carrier, reported a 4.6% increase in ridership in the first five months but saw a decline of 8% May to May.

United Airlines had the largest decline in total passengers served last month, dropping 14.5% from May 2018 and down 26.9% year to date. The airline launched a Santa Rosa–Denver route on March 8 and continues to make daily flights to San Francisco.

The load factor — a measure of how full the flights are — increased last month for Alaska to 83%, up 3.7% from 80% a year before; for American to 84%, up 2% from 82%; and for United to 80%, up 23% from 65%.

Sun Country Airlines on May 10 resumed its seasonal service to Minneapolis and on Sept. 5 will launch seasonal flights to Las Vegas. Allegiant Airlines dropped Sin City and other flights from Santa Rosa in 2017.

CORRECTION: An earlier verison of the story stated United Airlines had dropped its flights from Santa Rosa to San Francisco. It continues to fly that route.

More airport data

See past reports on Santa Rosa airport airline passenger data.