The most frequently used airline companies from Los Angeles to San Francisco are generally
Virgin Atlantic,
Hawaiian Airlines,
Alaska Airlines,
Korean Air,
All Nippon Airways,
JetBlue,
China Airlines,
Qatar Airways,
V Australia,
Emirates,
Skywest Airlines,
Japan Airlines,
Finnair,
El Al Israel Airlines,
Air China,
Asiana Airlines,
Delta Air Lines,
United Airlines,
Westjet,
Iberia,
Avianca,
Lan Airlines,
Air New Zealand,
British Airways,
Copa Airlines,
Singapore Airlines
are companies.