Alaska Airlines completes acquisition of Hawaiian Airlines

Alaska Airlines has completed its $1.9 billion acquisition of Hawaiian Airlines after reaching an agreement with the U.S. Department of Transportation.

The airlines yesterday agreed to maintain key Hawaiian routes and adopt consumer protections under an agreement that will last six years.

The Justice Department in August chose not to block the deal that was announced in December by Alaska, the fifth-largest domestic U.S. airline, to merge with Hawaiian, the 10th-largest carrier.