Frontier Airlines (2nd) has announced new service from Seattle/Tacoma to Ontario International Airport. This service marks six new (Miami, Las Vegas, Newark, San Salvador, Guatemala City, and Seattle) ONT routes, with Frontier, that will begin this spring and summer.
Frontier also announced new daily service from Phoenix to Los Angeles (LAX) and Mineta San Jose International Airport. This makes for a total of 17 cities Frontier serves out of Phoenix.
Frontier Airlines aircraft photo gallery: