The Port of Seattle has signed off on a new Chase Sapphire Lounge at Seattle-Tacoma International Airport, and the early renderings suggest it will be one of the nicer spots in the brand's growing network. The catch? Approval is just the first step, and realistic estimates put the opening somewhere around 2028, possibly 2029.

The lounge will span roughly 16,000 square feet in Concourse A, right next to the existing Delta lounge complex that houses both a Delta One Lounge and a SkyClub. It will take over the space currently occupied by The Club at SEA, plus an adjacent area originally earmarked for that lounge's expansion. There's a bit of airport dominoes involved: The Club at SEA will move into the current United Club space, while United's club relocates to the old Centurion Lounge spot in Concourse B.

As for what's inside, expect the usual Chase Sapphire formula: shower suites, digital food ordering, and the strong food and drink program that has made these lounges some of the best credit-card lounges around. Access is aimed primarily at holders of the Chase Sapphire Reserve and Sapphire Reserve Business, though other entry routes exist. The design, at least on paper, looks a notch above what the network typically delivers — though renderings always flatter.

Seattle's lounge scene has come a long way. When the first Centurion space opened there in 2015, it was so tiny Amex branded it a "Centurion Studio." Since then the airport has gained a proper full-size Centurion Lounge, a well-regarded Alaska Lounge in Concourse N, and the Delta One Lounge and SkyClub pairing. Still to come are a new Alaska lounge complex — including the first-ever Aurora Lounge — and this Chase project. On top of that, Chase has two more unopened Sapphire Lounges in the pipeline at Los Angeles (LAX) and Miami (MIA).

For travellers, this matters mostly if you're a Sapphire Reserve cardholder with SEA in your regular rotation, or anyone facing a long layover in Seattle. More lounge capacity at an increasingly busy international hub is good news regardless of which card you carry — competition tends to lift standards across the board. The practical advice for now: enjoy what's already open, and file the Sapphire Lounge away as a reason to check back in a few years.