Alaska Airlines has emerged as an unlikely player in the long-haul game, focusing on routes to Asia and Europe from its main US West Coast hub at Seattle-Tacoma International Airport (SEA). The carrier's merger with Hawaiian Airlines has also resulted in a significant expansion of its intercontinental route network.
According to present scheduling data made available by Cirium, an aviation analytics company, Alaska's longest route by scheduled block time between May and December 2026 clocks in at a duration of almost 12 hours.
The carrier operates the longest route with the Boeing 787-9 Dreamliner, which is also used on its second-longest route from Seattle to Rome Fiumicino Airport (FCO).
Alaska's Longest Route: Seattle-Seoul
Passengers looking to sample Alaska's longest route by block time should look no further than its transpacific corridor between Seattle and Incheon International Airport (ICN) in Seoul, South Korea.
The westbound rotation is the longer of the two legs on this route, with a maximum scheduled block time of 11 hours and 55 minutes. Alaska operates the route with the Boeing 787-9 Dreamliner.
Simple Flying Quiz
Alaska's second-longest route by block time is also operated by the 787-9, but links Seattle to Rome Fiumicino Airport (FCO) in Europe.
The carrier's CCO, Andrew Harrison, commented on expanding its global reach in 2025.
Rounding Out The Top Five
Alaska's second-longest route by block time is actually a domestic flight, namely from New York-JFK back to Honolulu (HNL) in Hawaii.
This takes 11 hours and 15 minutes, operated by the Airbus A330-200.
The expansion of Alaska Airlines' long-haul network is a significant development for the aviation industry, with potential implications for passenger demand and airline efficiency.
