Alaska AirlinesAS
Flights AS518 08:36 daily
live
Direct flights from Cincinnati / Covington (CVG) to Seattle (SEA): 14 nonstop departures observed each week across 2 airlines. The median arrival is 23 minutes early. 1 of the 13 tracked flights was cancelled. The nonstop covers 3,154 km, an estimated 4 hours 33 minutes in the air. Measured by Pro Flight Search from live flight boards at Cincinnati / Covington and Seattle. Updated 14 November 2026 at 23:58 UTC.
Today, CVG → SEA
Sat 14 Nov · local timesChecked CVG board 15:03 · SEA board 15:58
CVG
Cincinnati / Covington
heavy · +40
SEA
Seattle
smooth · +0
3,154 km · ~4h 33m est.
Running clean · 2 airlines · 14x weekly · nonstop
73 / 100
route health from live CVG and SEA delay boards
Median arrival delay is −23 min. 1 of 13 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−23 minacross the last 1 arrival
Flight time~4h 33mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled7.7%recent route rate · 1 of 13
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesDelta Air Lines
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 daysDelta Air LinesDL
Flights DL966 varies daily
History
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Conditions are tightest at CVG: a 37% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +9 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 Cincinnati / Covington to Seattle route actually runs
Pro Flight Search records official board updates for nonstop CVG 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: Cincinnati / Covington (CVG) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/CVG-SEA
CVG to SEA questions
Is CVG–SEA running on time right now?
Mostly on schedule. The departure side at CVG is the weaker end, route health score 73/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from CVG to SEA?
Great-circle distance is 3,154 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 253–300 min gate-to-gate on this route.
How often does CVG–SEA fly?
2 carriers operate this route, around 14 flights a week between them. Compare carrier days and times in the airline list above.
What does the route health score measure?
A blend of departure-side delay at CVG 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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