The seasonal Guadalajara service is set to begin March 18, 2027, operating three times a week through Aug. 9 on Boeing 737 aircraft. It will be Alaska's 10th international nonstop destination from Seattle, joining existing service to Reykjavik, London, Rome, Seoul and Tokyo, among others.

The airline said the route will give Pacific Northwest travelers a direct connection to Guadalajara's food, arts and cultural scene. The city and surrounding Jalisco region are globally recognized as the birthplace of mariachi music and the source of tequila, distilled from the region's blue agave fields.

Alaska also unveiled four new domestic routes from Seattle for 2027. Daily, year-round service to Charlotte, North Carolina, and Norfolk, Virginia, will begin June 10. Daily flights to Jacksonville, Florida, and Des Moines, Iowa, will start June 24.

The Jacksonville, Norfolk and Des Moines routes will be the first nonstop connections between those cities and Seattle, according to the airline.

The additions will bring Alaska's network from Seattle to 119 nonstop destinations. The expansion comes as the airline prepares to launch service from Seattle to Paris and Athens next spring, followed by Osaka in May and Tahiti in June.

The Guadalajara route is likely to be welcomed by the region's large Mexican-American community and by travelers seeking easier access to western Mexico's cultural and culinary attractions. It also strengthens Seattle's position as a growing international gateway, though the seasonal schedule means the link will operate only during the spring and summer months.

Alaska has not yet announced fares or exact departure times for the new routes.