STS → SEASanta Rosa to Seattle

live

Direct flights from Santa Rosa (STS) to Seattle (SEA): 14 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 Santa Rosa and Seattle. Updated 30 October 2026 at 14:22 UTC.

Today, STS → SEA

Fri 30 Oct · local times
  1. · AS1348Alaska On schedule SEA est. 19:00sched 19:06
  2. · AS513Alaska On schedule SEA est. 08:41sched 09:00

Checked SEA board 07:22

STS Santa Rosa tracking
SEA Seattle smooth · +3
995 km · ~1h 47m est.
dep bank 09:00–19:0614x weekly
Running clean · 1 airline · 14x weekly · nonstop
92 / 100

route health from live STS and SEA delay boards

Flight time~1h 47mestimated from route distance
Weekly departures14x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
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 days
Alaska AirlinesAS

Flights AS513 09:00 daily · AS1348 19:06 daily

Airports right now

live boards
STSSanta Rosa tracking Full STS delay board →
SEASeattle +3 min smooth 🌤 overcast · N 4 kt Full SEA delay board →

How the Santa Rosa to Seattle route actually runs

Pro Flight Search records official board updates for nonstop STS to SEA 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: Santa Rosa (STS) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/STS-SEA
How we measure this →

STS to SEA questions

Is STS–SEA running on time right now?

Smooth skies ahead. The arrival side at SEA is the weaker end, route health score 92/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from STS to SEA?

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 STS–SEA 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 STS and arrival-side delay at SEA, 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.