SEA → PEKSeattle to Beijing

live

Direct flights from Seattle (SEA) to Beijing (PEK): 2 nonstop departures observed each week across 1 airline. The median arrival is 161 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 3 November 2026 at 19:22 UTC.

Today, SEA → PEK

Tue 3 Nov · local times
  1. 10:20 HU496Hainan Airlines Departed PEK est. 15:02In the air · sched 15:50

Checked SEA board 11:22 · PEK board 03:01

SEA Seattle busy · +15
PEK Beijing smooth · +0
8,679 km · ~11h 38m est.
departs 11:202x weekly
Running clean · 1 airline · 2x weekly · nonstop
87 / 100

route health from live SEA and PEK delay boards

Median arrival delay is +161 min. 0 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+161 minacross the last 2 arrivals
Flight time~11h 38mestimated from route distance
Weekly departures2x1 direct airline on the leg

Who flies it

observed on the boards · 7 days
Hainan AirlinesHU

Flights HU496 varies Tu Sa

History

operated legs · board outcomes
10-31HU496dep +120 → arr+161
10-27HU496arrived+33

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
SEASeattle +15 min busy 🌤 mostly cloudy · NW 5 kt Full SEA delay board →
PEKBeijing +0 min smooth ⛅ clear · NE 2 kt Full PEK delay board →

Weather 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 +0 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →

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
https://proflightsearch.com/search-flights/SEA-PEK
How we measure this →

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 87/100. 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.