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Air Canada

Is AC421 delayed?

Service date: · Scheduled arrival date; departure time unavailable (America/Toronto)

Last reported

Cancelled

This update may be out of date. Check with your airline.

Update time unavailable

Departure

Montreal

YUL

Scheduled

Not available

Arrival

Toronto

YYZ

Scheduled

Sep 10

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Not available
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual
Not available

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • YUL → YYZ

    1 min early

  • YUL → YYZ

    9 min late

  • YUL → YYZ

    48 min late

  • YUL → YYZ

    4 min late

  • YUL → YYZ

    10 min late
Flight history and details

Aug 17, 2026 — Sep 16, 2026

Observed arrivals
11
Arrivals over 15 minutes late
5
Observed cancellations
1
Observed occurrences
12

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

AC421 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 15, 2026ArrivedMontrealToronto
-1
Sep 14, 2026ArrivedMontrealToronto
9
Sep 13, 2026ArrivedMontrealToronto
48
Sep 12, 2026ArrivedMontrealToronto
4
Sep 11, 2026ArrivedMontrealToronto
10
Sep 10, 2026CancelledMontrealTorontoNot available
Not available
Sep 9, 2026ArrivedMontrealToronto
20
Sep 8, 2026ArrivedMontrealToronto
10
Sep 7, 2026ArrivedMontrealToronto
28
Sep 6, 2026ArrivedMontrealToronto
60
Sep 5, 2026ArrivedMontrealToronto
5
Sep 4, 2026ArrivedMontrealToronto
18

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