The most frequently used airline companies from New York to San Francisco are generally
Qantas Airways,
Korean Air,
Aerolineas Argentinas,
Scandinavian Airlines,
Lan Airlines,
Alitalia,
TAP Portugal,
Virgin Atlantic,
All Nippon Airways,
Delta Air Lines,
Air Pacific,
Asiana Airlines,
Japan Airlines,
Kenya Airways,
Azul Linhas Aereas Brasileiras,
Royal Jordanian,
Royal Air Maroc,
Singapore Airlines,
V Australia,
El Al Israel Airlines,
British Airways,
Etihad Airways,
Austrian,
Hawaiian Airlines,
American Airlines,
Qatar Airways,
KLM,
Alaska Airlines,
Brussels Airlines,
Air Europa,
Lufthansa,
JetBlue,
United Airlines
are companies.