Alaska Airlines is expanding its use of Boeing 737 MAX aircraft on long-haul routes, with several flights now scheduled to last nearly nine hours. The airline’s current fleet includes 80 737 MAX 9s and eight 737 MAX 8s, making up about 36% of its total Boeing 737 sub-fleet.
The carrier, a member of the oneworld alliance, operates from hubs including Seattle-Tacoma International Airport and Los Angeles International Airport. Alaska Airlines has recently focused on extending the range of its single-aisle jets, adding new destinations that require longer block times—the period from when an aircraft leaves the gate until it arrives at its destination.
Data from Cirium Diio shows that between October 2025 and July 2026, Alaska will operate eleven routes with block times of six hours and fifty minutes or more. These include flights from Liberia in Costa Rica back to Seattle, which began in December 2024 and is currently the longest by block time at up to nine hours and three minutes. However, this route ranks third in terms of great circle distance among Alaska’s network.