Many airlines serving SFO have temporarily suspended operations, or are offering limited service. If you have questions about your booking or your ticket, you need to contact your airline directly. Most international airlines operating at SFO only staff their check-in counters 3-4 hours before departure on the days they are flying. If your airline has suspended service, or you are looking for assistance outside the 3-4 hours before departure, there will not be an airline representative to assist you at SFO. Additionally, some domestic airlines only open their counters 2-3 hours before departure. View anticipated schedule updates.