What is the former name of the air marketing brand for which Unalakleet Airport serves as a hub?
Unalakleet Airport:  The airport serves as a hub for Ravn Alaska. Ravn Alaska: Corvus Airlines dba Ravn Alaska (formerly Era Alaska) is an air marketing brand operated by Era Aviation, a FAR Part 121 airline headquartered in Anchorage, Alaska, United States.
Era Alaska