The most frequently used airline companies from New York to Washington are generally
Ethiopian Airlines,
Aeromexico,
Qatar Airways,
Alitalia,
United Airlines,
Korean Air,
Lan Airlines,
China Airlines,
Midwest Airlines,
All Nippon Airways,
Air France,
Delta Air Lines,
TAP Portugal,
Iberia,
Avianca,
British Airways,
Westjet,
Kenya Airways,
Air Senegal,
China Eastern Airlines,
American Airlines,
Gol Linhas Aereas,
Aerolineas Argentinas,
Scandinavian Airlines,
JetBlue,
Virgin Atlantic,
KLM,
Gojet Airlines,
Malaysia Airlines,
Cathay Pacific,
Pinnacle Airlines
are companies.