Alaska AirlinesAS
Flights AS494 10:03 daily
live
Direct flights from Seattle (SEA) to San Antonio (SAT): 7 nonstop departures observed each week across 1 airline. The nonstop covers 2,854 km, an estimated 4 hours 10 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and San Antonio. Updated 3 November 2026 at 10:22 UTC.
Today, SEA → SAT
Tue 3 Nov · local times- 10:09 AS494ALASKA AIRLINES On scheduleGate N1 ·
Checked SEA board 01:05 · SAT board 03:52
SEA
Seattle
busy · +16
SAT
San Antonio
smooth · +14
2,854 km · ~4h 10m est.
Running clean · 1 airline · 7x weekly · nonstop
80 / 100
route health from live SEA and SAT delay boards
Flight time~4h 10mestimated 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 boardsWeather lens
Conditions are tightest at SEA: a 29% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +3 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →
next sweep in 120s
How the Seattle to San Antonio route actually runs
Pro Flight Search records official board updates for nonstop SEA to SAT 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 San Antonio (SAT) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SEA-SAT
SEA to SAT questions
Is SEA–SAT running on time right now?
Mostly on schedule. The departure side at SEA is the weaker end, route health score 80/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from SEA to SAT?
Great-circle distance is 2,854 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 231–275 min gate-to-gate on this route.
How often does SEA–SAT fly?
Alaska Airlines runs the route with about 7 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 SAT, 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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