Nonstop flights between Hartsfield–Jackson Atlanta International Airport (ATL) and San Francisco International Airport (SFO) typically average 5 hours 10 minutes to 5 hours 40 minutes airborne, with published block times around 5 hours 20 minutes. In January, expect multiple daily nonstop departures—early morning (6:00–9:00 local ATL), midday, and late afternoon windows facilitate business and leisure travel. If choosing a connecting flight, common connection cities include Salt Lake City, Dallas/Fort Worth, and Chicago; total travel time for one-stop itineraries commonly ranges from 7 to 10+ hours depending on layover length. Always verify the specific flight duration and departure times on the airline's schedule the week before travel.