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