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