Is JAX–SEA running on time right now?
Mostly on schedule. The arrival side at SEA is the weaker end, route health score 77/100. The airports section above carries the live status and delay window at both ends.
live
Direct flights from Jacksonville (JAX) to Seattle (SEA) run nonstop between the two airports. The nonstop covers 3,925 km, an estimated 5 hours 32 minutes in the air.
JAX
Jacksonville
smooth · +14
SEA
Seattle
busy · +21
3,925 km · ~5h 32m est.
Running clean · 0 airlines · nonstop
77 / 100
route health from live JAX and SEA delay boards
Flight time~5h 32mestimated from route distance
Airports right now
live boardsWeather lens
Current conditions put the pressure at JAX: 39% odds of a 15+ minute delay and around +11 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Jacksonville to Seattle route actually runs
Pro Flight Search records official board updates for nonstop JAX 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 — Jacksonville (JAX) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/JAX-SEA
JAX to SEA questions
How long is the flight from JAX to SEA?
Great-circle distance is 3,925 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 307–366 min gate-to-gate on this route.
What does the route health score measure?
A blend of departure-side delay at JAX 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.
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