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