Hainan AirlinesHU
Flights HU496 11:00 Tu Sa
live
Direct flights from Seattle (SEA) to Beijing (PEK): 2 nonstop departures observed each week across 1 airline. The median arrival is 32 minutes late. No cancellations were recorded across the 2 tracked flights. The nonstop covers 8,679 km, an estimated 11 hours 38 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and Beijing. Updated 21 September 2026 at 15:53 UTC.
SEA
Seattle
smooth · +10
PEK
Beijing
smooth · +0
8,679 km · ~11h 38m est.
Running clean · 1 airline · 2x weekly · nonstop
93 / 100
route health from live SEA and PEK delay boards
Median arrival delay is +32 min. 0 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+32 minacross the last 2 operated legs
Flight time~11h 38mestimated from route distance
Weekly departures2x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Hainan 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 daysHistory
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
Current conditions put the pressure at SEA and PEK: 35% odds of a 15+ minute delay and around +3 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 Seattle to Beijing route actually runs
Pro Flight Search records official board updates for nonstop SEA to PEK 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 Beijing (PEK) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SEA-PEK
SEA to PEK questions
Is SEA–PEK running on time right now?
Smooth skies ahead. The departure side at SEA is the weaker end, route health score 93/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from SEA to PEK?
Great-circle distance is 8,679 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 643–774 min gate-to-gate on this route.
How often does SEA–PEK fly?
Hainan Airlines runs the route with about 2 flights a week (tue, sat). 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 PEK, 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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