Imperial Airways was created on 1924-03-31.
Imperial Japanese Airways was created in 1938.
Hellenic Imperial Airways was created in 2006-05.
Imperial Airways ended in 1939.
There is some Imperial Airways stuff at the Croydon Airport Society archive (http://www.croydonairport.org.uk/)
British Airways Ltd. ended in 1939.
STP Airways was created in 2008.
Continental Airways was created in 1995.
Pakistan Airways was created in 2005.
Arizona Airways was created in 1942.
Maldives Airways was created in 1984.
Kinshasa Airways was created in 2002.
Myanma Airways was created in 1948.