Ask HN: Where to store my bag for a few hours in SF?

Visit the art gallery. they look after bags while you go round. It used to have a Jeff Koons "Michael Jackson & Bubbles" statue, and an airstream caravan in it amongst the less eclectic art.

Will do. Appreciate the tip

Most hotels will store your luggage, though I recommend taking your passport and other important valuables with you.

The airport has a place where you can pay for them to store it but you have to leave the secure area

probably a little late for you by now but your hotel will store luggage for you temporarily before or after checkout