737-800s, which were the largest aircraft types serving the airport at the time. Sun Country left the airport in early 2020. Avelo Airlines began nonstop service to the Hollywood Burbank Airport (BUR) in the Los Angeles area on April 28, 2021 and then subsequently added nonstop flights to Las Vegas with Boeing 737-800 mainline jetliners which are currently the largest aircraft type serving Santa Rosa in scheduled passenger service. Alaska Airlines has since begun nonstop jet service from the airport to BUR as well. With the retirement of all Bombardier Q400 turboprop aircraft from the Alaska Airlines fleet in late January 2023, all Alaska Airlines flights from Santa Rosa are currently operated with Embraer E175 regional jets. Facilities The airport covers at an elevation of 129 feet (39 m). It has two asphalt runways: 02/20 is 5,202 by 100 feet (1,586 x 30 m) and 14/32 is 6,000 by 150 feet (1,829 x 46 m). In 2017 the airport had 79,231 aircraft operations, average 217 per day: 83% general aviation, 10% air taxi, 6% airline and 1% military. Three hundred fifteen aircraft were then based at this airport: 85% single-engine, 12% multi-engine, 2% jet, and 1% helicopter. In August 2013 the airport started a project to decouple the ends of the two runways and extend runway 14/32 by 885 feet, to 6000 feet and extend runway 02/20 by 200 feet, to 5202 feet. This project was scheduled for completion in November 2014. The influx of new passengers in the late 2010s left existing airport facilities under severe strain. As a stopgap solution, the airport invested in a $4-million "tent" to serve as gate 2, which opened on October 22, 2021. This has allowed the airport to double the area for outbound passenger seating, open a second passenger screening lane with TSA Pre Check capabilities, and replace portable restrooms with permanent units. As a more permanent solution, the airport has begun construction on an all-new terminal building. In the initial plan, the new terminal would add 19,000 square feet of new space at a cost of $20 million. However, as passenger growth surpassed projections, the project was expanded so that the new terminal would be 40,000 square feet (33,000 square feet of new space and 7,000 of renovated space) at a cost of $31 million. It will include a new gate 1 (replacing the old modular facility), additional space for concessions,