From the SFO website:
Our thoughts and prayers are with the passengers and crew of Asiana flight 214. The Airport is grateful to all first responders and agencies working to investigate and recover from this tragic event.
OPERATIONS
Runways:
1/19 Left & Right – reopened on Saturday, July 6th
28 Right – reopened on Sunday, July 7th
28 Left – Will remain closed for the immediate future
Flight Operations:
Although flights are arriving and departing, SFO is currently experiencing numerous delays and cancellations.
Please check with your airline for the most up to date flight information.
Security check point lines are long, but moving quickly. TSA has opened all lanes at all terminals.
For more information, please follow SFO on twitter: http://twitter.com/flysfo or call 1.800.I.FLY.SFO