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Frontier Airlines San Francisco International Airport +1-888-839-0502 From Terminal 1 at San Francisco International Airport (SFO), Frontier Airlines San Francisco International Airport provides passengers with an economical and effective travel experience. Known for its low-cost tickets, Frontier offers numerous nonstop flights to domestic destinations as well as a few foreign ones, including Denver, Las Vegas, and Orlando. Self-service kiosks and mobile check-in options expedite the airline's check-in procedure, making it simple for travelers to plan their trip. Among the amenities of SFO's Terminal 1 are dining options, retail stores, and complimentary Wi-Fi. Frontier's terminal...