San Francisco is a walkable city and has a comprehensive public transportation system, including buses, cable cars, and light rails. A one-way ticket on Muni costs $3, and a one-day pass is $13. If you plan to visit attractions further away from the city center, consider taking a taxi or ride-share service like Uber or Lyft, which can cost $20-$30 per trip.
If you have more time, consider renting a bike and exploring the city's beautiful neighborhoods and parks. If you have less time, prioritize your top must-see sights and plan your days accordingly. Remember that San Francisco has a cool and foggy climate, so bring layers and a jacket.
San Francisco International Airport (SFO), located 13 miles from the city center, is the main airport serving the city. Other airports in the area include Oakland International Airport (OAK) and San Jose International Airport (SJC).