Delta One Lounge Seattle (SEA) Opening Soon: What To Expect

Over the past year or so, Delta Air Lines has very nicely been growing its network of Delta One Lounges, which are exceptional, among the best you’ll find in the US. So far, we’ve seen lounges open in New York (JFK), Los Angeles (LAX), and Boston (BOS). In this post, I want to take an updated look at what we can expect from the next lounge in the network to open, as that should be happening in the coming days.

Delta One Lounge coming to Seattle Airport (SEA)

For quite some time, we’ve known that Delta plans to open a Delta One Lounge at Seattle-Tacoma Airport (SEA) in the summer of 2025. While there still hasn’t been an official announcement, it’s my understanding that the lounge will be opening this week.

I believe there’s a media event on Tuesday, June 24, and then the lounge is expected to open by Thursday, June 26. That’s my unofficial understanding, and I imagine we’ll officially learn more in the next couple of days. But I figure this is worth being aware of, in case you’re planning a trip through the airport in the coming weeks.

It’s pretty impressive to see the pace at which Delta is able to grow its network of Delta One Lounges, given how hard it can be for airlines to find real estate at major airports. The focus so far has been on more competitive airports. Within a year (or so) of the lounge concept launching, all four of Delta’s coastal hubs will have these lounges.

We know that Delta is also looking at opening Delta One Lounges at its fortress hubs, though that’s still a ways off. A Delta One Lounge Atlanta (ATL) is expected to open in 2028, while a Delta One Lounge Salt Lake City (SLC) is in the works, but without a timeline.

While plans for a Delta One Lounge in Seattle were announced some time ago, I imagine Delta is especially happy about having made that decision now, given that Alaska is turning Seattle into a global gateway, and the airline even plans to open a new international lounge. The battle in Seattle really is heating up.

What exactly is the Delta One Lounge plan for Seattle?

Where will the Delta One Lounge Seattle be located, and how big will it be? Delta is building a combined Sky Club and Delta One Lounge in the Concourse A expansion. This expansion is adding 52,000 square feet to the terminal, with 36,000 square feet of that being additional lounge space.

Delta’s new lounge setup will be located in Concourse A, near gate A11, and the two lounges will be stacked on top of one another. The combined Delta lounge facility will be nearly 25,000 square feet — this includes a roughly 14,000 square foot Sky Club, on the lower level, plus a roughly 11,000 square foot Delta One Lounge, on the upper level.

We should learn more in the next couple of days, but Delta is promising that the Delta One Lounge will feature an open-air terrace with stunning views of Mt. Rainier. Beyond the new Delta lounges, this facility will also have a new lounge from operator The Club, and that should also be around 11,000 square feet.

I’m curious to see what Delta comes up with in Seattle. In terms of size, the Delta One Lounge Seattle should be the second biggest in the system. The New York location is by far the biggest, this will be marginally bigger than the Los Angeles location, and it’ll be substantially bigger than the Boston location.

Come and think of it, it’s funny to consider that the Delta One Lounge in New York is bigger than the other three lounges combined. I’m not sure whether that’s a good or bad thing.

Bottom line

A Delta One Lounge is expected to open in Seattle this week, which will make it the fourth location for the lounge network. I’m happy to see the pace at which Delta is opening these lounges, as they make Delta’s business class ground experience more competitive (which is particularly important in Seattle right now).

What do you make of the plans for opening a Delta One Lounge Seattle?