I'm reviving this thread to see what alternative routes locals know about to get to sea-tac from Bellevue or north (my client site is up in Bothell). We have a requirement to be onside until 5pm on Thursday's which makes the 6:53pm United back to SFO close to impossible to make when it's on time thanks to delays through Bellevue and, to a lesser extent, the s-curves. Today, for instance it took me approximately 1h20m to make it to the rental car center. Thankfully the flight was delayed and I made it. What sort of tricks are there to avoid the trudge between the 520 and 90?