San Francisco's public transportation system is easily accessible and affordable. Muni buses and trains run throughout the city and a single fare costs $2.75. Biking is also a popular option, with numerous bike rental shops scattered around the city. Uber and Lyft are widely available but can be expensive during peak hours.
If you have more time, consider visiting the iconic Golden Gate Bridge or taking a boat tour of Alcatraz Island. For those with less time, skip Coit Tower and spend more time exploring Golden Gate Park or the Mission District.
San Francisco International Airport (SFO) is located 14 miles south of downtown San Francisco. Oakland International Airport (OAK) is an alternative option located across the Bay Bridge in Oakland. The smaller San Jose International Airport (SJC) is located about 50 miles south of the city.