October 2, 2026 · By The Sports Nus Staff · 3 min read
The NBA's expansion timeline is slipping. The first season for the planned Seattle and Las Vegas franchises could be pushed to 2029-30 instead of 2028-29, per Mike Vorkunov of The Athletic.
This is not a done deal. The word is "could." But the direction is hard to miss: every month the Vegas arena question goes unanswered, the 2028-29 target gets softer.
The timeline right now
- Original target: 2028-29 first season for both teams, Seattle and Las Vegas.
- New report: 2029-30 in play as the Vegas situation drags on, per Vorkunov.
- Next checkpoint: formal approval process expected by end of December 2026.
- Vegas bids: three finalist groups at $12-13 billion including a new arena: Nancy Walton Laurie and Bill Laurie, Steve Apostolopoulos and Marc Lasry, and Bill Foley and Jerry Colangelo.
- Seattle: Climate Pledge Arena is ready now. Silver: "if we were opening in five weeks we could be ready in Seattle."
Vegas is the holdup, not Seattle
Seattle is the easy part of this equation. The arena is ready, the ownership groups are circling, and the city has been waiting since the Sonics left. Vegas has no arena site, T-Mobile Arena needs what Silver called "significant improvements" to host an NBA team, and the league is still running a full bidding war with a second round of detailed bids recently submitted. Silver himself said Vegas faces "a much longer timeline before we can throw the ball up for NBA basketball."
The league is in no hurry, and honestly that is rational. This is a $12 billion-plus decision with three billionaire groups at the table. But every month of patience eats the runway a 2028-29 launch needs: expansion draft, front office staffing, scheduling and all of it requires serious lead time.
What a slip would actually change
One year does not change the destination. Seattle and Vegas are still the markets, and the money behind the bids is not going anywhere. What it changes is the math around the edges: another season of splitting national TV money 30 ways instead of 32, which owners absolutely notice, and more time for the league's streaming RSN plans to settle before new teams arrive.
For fans, it is simple: Seattle waits a little longer for the Sonics to come home, and Vegas waits for someone to pick an arena site. The end-of-December approval vote is the next real checkpoint. If that slips, 2029-30 stops being a "could" and starts being the plan.