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Alaska Airlines Lounge Planned for Seattle (SEA) Concourse C in 2027

Written by Matthew Justice on Jun 12, 2026
Rendering of the entrance of the Alaska Lounge in Seattle Concourse C with two people working the reception desk.

Key Takeaways

  • Largest U.S. Lounge — Alaska Airlines' new Seattle lounge opens in Concourse C in late 2027, spanning 41,000 sq ft with 700 seats.
  • Two-Level Design — The Alaska Airlines Seattle lounge will be split across two levels: first-class and day-pass guests below, international long-haul and Atmos Titanium members above.
  • Premium Amenities — The Seattle lounge will feature full-service bars, Ă  la carte dining, local beers and cocktails, and mountain views.

Alaska Airlines has announced it will be opening its largest lounge at Seattle (SEA) in late 2027. This new lounge will be located in the newly opened Concourse C and is planned to span 41,000 square feet (3,809 m²) with seating for 700 customers.

The new lounge will span two levels, featuring multiple full-service bars. Each of the two levels will serve different customers. The main level will be open to eligible first-class guests and day-pass customers. The upper level will be dedicated to international long-haul passengers and eligible Atmos Titanium members traveling internationally. Both levels will feature freshly prepared, locally inspired premium dining, including à la carte options, Pacific Northwest beers and craft cocktails, and handcrafted espresso beverages. The lounge will offer expansive views of the Olympic Mountains and the airfield.

The project is part of Alaska’s multimillion-dollar investment in its lounge network and  its broader investment in the global guest experience. Included in this expansion is also the carrier's first lounge in San Diego and a new, expanded lounge in Honolulu, both slated for early 2028.

New Routes: Alaska recently began flights to new international destinations, including London, Rome, Reykjavik, Seoul, and Tokyo.

Closing Thoughts

It's too early to know much about this lounge, but being a two-level lounge and planned to be the largest lounge in the United States, this location has everything needed to deliver an amazing customer experience.