San Francisco Airport Luggage Options
Luggage storage at SFO is available at the Airport Travel Agency, which is located on the ticketing/check-in level of the International Terminal.
The agency is open 6am to 11pm daily, and is contactable on (650) 877-0422, or by email.
Luggage carts are available in all terminals. They can be located in the Parking Garages, the Rental Car Center, and Baggage Claim areas.