It is an American company.
United States of America
Etihad (not Ethihar) Airways, is the National Airline of the United Arab Emirates
Olympic Airlines is based in Greece
Japan
America
The country that London belongs to is: The United Kingdom.
United Airlines is an American company.
The airline code for Singapore Airlines is "SQ". Singapore is a city-state, so the country is also Singapore.
united states of america
United Kingdom (Britian)
Typically, I fly with American Airlines in the United States.
Vietnam Airlines belongs to Vietnam. The headquarters of the Vietnam Airlines are located at Hanoi Noi Bai International Airport and at Saigon Tan Son Nhat International Airport. Vietnam Airlines is a Vietnamese airline!