Is SEA–YUL 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.
live
Direct flights from Seattle (SEA) to Montréal (YUL) run nonstop between the two airports. The nonstop covers 3,666 km, an estimated 5 hours 12 minutes in the air.
SEA
Seattle
smooth · +10
YUL
Montréal
smooth · +0
3,666 km · ~5h 12m est.
Running clean · 0 airlines · nonstop
93 / 100
route health from live SEA and YUL delay boards
Flight time~5h 12mestimated from route distance
Airports right now
live boardsWeather lens
Conditions are tightest at YUL: a 36% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +6 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 Montréal route actually runs
Pro Flight Search records official board updates for nonstop SEA to YUL 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 Montréal (YUL) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SEA-YUL
SEA to YUL questions
How long is the flight from SEA to YUL?
Great-circle distance is 3,666 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 289–344 min gate-to-gate on this route.
What does the route health score measure?
A blend of departure-side delay at SEA and arrival-side delay at YUL, 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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