Yes, Alaska Airlines is a full member of the Oneworld alliance, having officially joined on March 31, 2021. This membership was a massive strategic move for the airline, as it integrated their West Coast-focused network with global giants like American Airlines, British Airways, Cathay Pacific, and Qantas. For travelers in 2026, this means that Alaska "Mileage Plan" members can earn and redeem miles on all Oneworld partner flights worldwide. Furthermore, Alaska's "MVP Gold" and "MVP Gold 75K/100K" elites receive Oneworld Sapphire and Emerald status, respectively, granting them access to hundreds of international business and first-class lounges, priority boarding, and extra baggage allowances across the entire alliance. This partnership has also allowed Alaska to streamline its codeshare agreements, making it much easier for passengers in cities like Seattle or Portland to book a single ticket to destinations in Europe or Asia with seamless baggage transfers and a consistent loyalty experience across multiple carriers.