Alaska Airlines has officially completed its $1.9 billion acquisition of Hawaiian Airlines, marking the largest merger in the airline industry in nearly a decade. The U.S. Department of Transportation cleared the merger, allowing both airlines to finalize their deal while implementing conditions to protect consumer rights, including the preservation of frequent flyer miles and routes. Following the merger, Alaska Airlines will expand its reach, providing enhanced choices for travelers. As part of the transition, Hawaiian Airlines will maintain its separate brand identity, and new leadership has been announced to guide the integration process.