In March 2017 Sun Country Airlines announced seasonal nonstop service between Santa Rosa and Minneapolis/St. Paul International Airport, to operate from late summer until late fall. Sun Country was operating weekly 162 seat Boeing 737-800s August 24, 2017 through December 3, 2017, connecting via Minneapolis/St. Paul to Boston, New York John F. Kennedy Airport and Washington Reagan National Airport. Sun Country still operates from the airport but has ended all service to Ronald Reagan Washington National Airport and now serves Washington Dulles Airport instead. In May 2018 Sun Country Airlines made a surprise announcement that it would be adding a new seasonal destination from Santa Rosa with nonstop flights between STS and Las Vegas (LAS) in addition to its seasonal nonstop service between the airport and MSP. The Sun Country fleet is composed of Boeing 737-700s and 737-800s, which were the largest aircraft types serving the airport at the time. Sun Country left the airport in early 2020.