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Air Canada

Is AC521 delayed?

Service date: · Scheduled departure date (UTC)

Last reported

Cancelled

This update may be out of date.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

Update time unavailable

Departure

Montreal

YUL

Scheduled

Sep 19

Arrival

Chicago

ORD

Estimated

Scheduled 10:15

Sep 19

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Actual
Not available
View this flight’s market

Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.

Recent arrivals

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

  • YUL → ORD

    65 min late

  • YUL → ORD

    127 min late

  • YUL → ORD

    13 min early

  • YUL → ORD

    57 min late

  • YUL → ORD

    17 min early
Flight history and details

Aug 21, 2026 — Sep 20, 2026

Observed arrivals
12
Arrivals over 15 minutes late
4
Observed cancellations
1
Observed occurrences
13

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

AC521 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 19, 2026CancelledMontrealChicagoNot available
View this flight’s market
Not available
Sep 18, 2026ArrivedMontrealChicago
65
Sep 17, 2026ArrivedMontrealChicago
127
Sep 16, 2026ArrivedMontrealChicago
-13
Sep 15, 2026ArrivedMontrealChicago
57
Sep 14, 2026ArrivedMontrealChicago
-17
Sep 13, 2026ArrivedMontrealChicago
-22
Sep 12, 2026ArrivedMontrealChicago
9
Sep 11, 2026ArrivedMontrealChicago
-28
Sep 10, 2026ArrivedMontrealChicago
18
Sep 9, 2026ArrivedMontrealChicago
-11
Sep 8, 2026ArrivedMontrealChicago
-19
Sep 7, 2026ArrivedMontrealChicago
-36

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