Air CanadaAC43% on time
Flights AC7990 13:00 daily
live
Direct flights from Montréal (YUL) to Deer Lake (YDF): 7 nonstop departures observed each week across 1 airline. 43% of the last 7 operated flights arrived within 15 minutes of schedule. The median arrival is 17 minutes late. No cancellations were recorded across the 7 tracked flights. The nonstop covers 1,298 km, an estimated 2 hours 10 minutes in the air. Measured by Pro Flight Search from live flight boards at Montréal and Deer Lake. Updated 16 September 2026 at 00:10 UTC.
YUL
Montréal
smooth · +5
YDF
Deer Lake
tracking
1,298 km · ~2h 10m est.
Runs rough · 1 airline · 7x weekly · nonstop
43% on time
of the last 7 operated YUL → YDF flights arrived within 15 minutes
Median arrival delay is +17 min. 0 of 7 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+17 minacross the last 7 operated legs
Flight time~2h 10mestimated from route distance
Weekly departures7x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Air Canada
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 boardsnext sweep in 120s
How the Montréal to Deer Lake route actually runs
Pro Flight Search records official board updates for nonstop YUL to YDF 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 — Montréal (YUL) to Deer Lake (YDF) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/YUL-YDF
YUL to YDF questions
Is YUL–YDF running on time right now?
Smooth skies ahead. The departure side at YUL is the weaker end, route health score 90/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from YUL to YDF?
Great-circle distance is 1,298 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 122–141 min gate-to-gate on this route.
How often does YUL–YDF fly?
Air Canada runs the route with about 7 flights a week (daily). 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 YUL and arrival-side delay at YDF, 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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