If you want to squeeze in a quick meal on your way to SFO, or need a decent place near the airport for a lunch or dinner meeting, a good choice is
Hung To Seafood (221 South Spruce Ave., South San Francisco). The food's good, prices are reasonable (see the
online menus for details), there's ample free parking, the detour adds only a couple of miles to the trip from SF to SFO, and it's only four miles to airport.
Dim sum is served from rolling carts from 11:00 a.m. to 2:30 p.m. weekdays, 10:00 a.m. to 3:00 p.m. Saturday and Sunday. The taro dumplings are as standout, as good as I've had anywhere, including Yank Sing. Dinner is served daily from 5:00 p.m. to 9:30 p.m. (10:00 p.m. Friday and Saturday), and the menu focuses on Hong Kong seafood. (Thanks to Chowhound user
scarmoza for the tip.)