Alaska AirlinesAS
live
Direct flights from Seattle (SEA) to Santa Rosa (STS): 7 nonstop departures observed each week across 1 airline. The nonstop covers 995 km, an estimated 1 hour 47 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and Santa Rosa. Updated 15 September 2026 at 21:54 UTC.
SEA
Seattle
busy · +23
STS
Santa Rosa
tracking
995 km · ~1h 47m est.
Running clean · 1 airline · 7x weekly · nonstop
70 / 100
route health from live SEA and STS delay boards
Flight time~1h 47mestimated from route distance
Weekly departures7x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysAirports right now
live boardsnext sweep in 120s
How the Seattle to Santa Rosa route actually runs
Pro Flight Search records official board updates for nonstop SEA to STS flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Seattle (SEA) to Santa Rosa (STS) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SEA-STS
SEA to STS questions
Is SEA–STS running on time right now?
Mostly on schedule. The departure side at SEA is the weaker end, route health score 70/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from SEA to STS?
Great-circle distance is 995 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 100–115 min gate-to-gate on this route.
How often does SEA–STS fly?
Alaska Airlines runs the route with about 14 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at SEA and arrival-side delay at STS, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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