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Frontier Airlines operates from Terminal 1 , also known as the Harvey Milk Terminal . This terminal has undergone extensive renovations to enhance the passenger experience, offering modern amenities, efficient security screening, and various dining and shopping options .
To stay updated on gate assignments, check-in details, and airport facilities, visit the Frontier Airlines SFO Terminal page for real-time information.
Check-In and Security Process for Frontier Airlines at SFO
Frontier Airlines offers multiple check-in options at SFO to accommodate different travel needs:

• Online Check-In: Available 24 hours before departure via the airline's website or mobile app. Passengers can download boarding passes and manage their luggage online.
  
• Self-Service Kiosks: Located inside Terminal 1, allowing travelers to print boarding passes quickly.
  
• Airport Check-In Counters: Passengers who need in-person assistance can visit the dedicated Frontier Airlines counters at Terminal 1.
  
• To ensure a hassle-free experience, it is recommended to arrive at least 2 hours before domestic flights and 3 hours before international departures .
  Security Screening at Terminal 1
  Terminal 1 is equipped with TSA PreCheck lanes , allowing eligible passengers to enjoy a faster security screening process without removing shoes, belts, or laptops. Standard security lanes are also available, with varying wait times depending on airport traffic.