Bus hub · Metro & intercity
Seattle’s bus story is a story of handover: King County Metro and Sound Transit Express still move the region’s daily millions, but every new light-rail extension re-draws the map they serve. The intercity trade — Portland, Vancouver BC, Spokane — runs on a mature coach network, and the airport link is now a train, not a bus.
The Puget Sound bus network remains one of the largest in the United States — King County Metro alone runs hundreds of routes — but its role is being rewritten in real time. The September 2024 service reorganization around the Lynnwood Link opening was the template: buses that once ran 40 minutes into downtown now feed the northern terminus, trading one-seat rides for faster combined journeys. The March 2026 Crosslake Connection triggers the same logic on the Eastside.
The numbers behind the handover are healthy on both sides: Sound Transit reported its fourth consecutive month of system-wide growth in late 2024, with total boardings 25% above the prior year, while ST Express hit its highest weekday ridership of the recovery. The buses are not dying — they are being promoted to feeders on the strongest rail build-out in America.
Seattle’s intercity coach trade is older than its rail revival: the Portland corridor runs multiple daily schedules, the Vancouver BC route folds Seattle into the Cascadia circuit, and the Spokane line crosses the state. Airport ground access has quietly changed generation: the Link 1 Line serves SeaTac directly, and the rental-car and hotel shuttles that defined the airport’s bus scene now share the road with a train that cannot get stuck in traffic.
The TIO framing: watch the feeder reorganization, not the raw bus totals. Every rail extension temporarily depresses parallel bus numbers while raising the combined network’s utility — the late-2024 data show both happening at once. The region to watch is the Eastside, where the 2 Line’s March 2026 arrival is the largest service rewrite since the system’s founding.
The TIO Read: don’t count Seattle’s buses out — count what they’re becoming. The region is running the most honest experiment in American transit: build rail fast, re-wire buses as feeders, and let the combined network do the work. The early data say it works. For travellers, the practical read is simple: any trip between the airport, the cruise terminals, downtown and the Eastside now starts with the Link, and the bus is the second leg — not the first.
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