However , Southwest eventually returned to SFO in 2007 .
The delays during poor weather ( among other reasons ) caused some airlines , especially low - cost carriers such as Southwest Airlines , to shift all of their service from the airport to Oakland and San Jose .
Southwest eventually returned to SFO in 2007 .
The delays during poor weather ( among other reasons ) caused some airlines , especially low - cost carriers such as Southwest Airlines , to shift all of their service from the airport to Oakland and San Jose .