Delta adds Seattle–Puerto Vallarta route

Delta Air Lines is adding Saturday-only nonstop service between Seattle and Puerto Vallarta for summer 2026. (news.delta.com) Delta announced the route on October 31, 2025, in a network update that added new weekend-focused flights across the United States, Mexico, Canada and the Caribbean. Amy Martin, Delta’s vice president of network planning, said the routes were built around leisure demand and shorter getaways. (news.delta.com) Delta did not publish a route-by-route start date for Seattle–Puerto Vallarta in the release, but said the new Saturday flights would begin in May or June 2026 and operate through September or October 2026, depending on the market. Delta’s Puerto Vallarta destination page now lists Seattle as a seasonal nonstop origin. (news.delta.com) (delta.com) The Seattle flight was one of 10 new Saturday-only routes Delta outlined in that announcement. The same update added Seattle–Albuquerque and new weekend routes from Atlanta, Boston, Los Angeles and New York LaGuardia. (news.delta.com) Puerto Vallarta already sits inside Delta’s broader Mexico leisure network, where the airline markets year-round nonstop service from Atlanta, Los Angeles and Salt Lake City, plus seasonal service from Seattle, Minneapolis-St. Paul and Detroit. (delta.com) The route also adds to Delta’s push in Seattle, where the airline markets dozens of nonstop destinations from Seattle-Tacoma International Airport and has used the city as a West Coast hub for both domestic and international flying. (delta.com 1) (delta.com 2) For travelers, the key detail is frequency: this is not a daily business route but a once-a-week weekend flight aimed at beach vacations. Delta framed the whole package as “Saturday spontaneity,” built around nonstop trips without a layover. (news.delta.com) That makes Seattle–Puerto Vallarta less a permanent network overhaul than a seasonal bet that summer 2026 travelers will fill a nonstop plane to Mexico on Saturdays. (news.delta.com)