Is AC521 delayed?
No delay reported — AC521 is expected in Chicago at 10:00 on Sep 26, 15 min early. Over its last 18 recorded arrivals, 4 landed more than 15 min late.
15 min early
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Montreal
YUL
Scheduled
Sep 26
Arrival
Chicago
ORD
Estimated
Sep 26
Times shown in airport local time
Service date: · Scheduled departure date (UTC)
Think AC521 runs late today? Delayed is trading at 24¢ — pays out x4.10.
Will Air Canada AC 521 from Montreal to Chicago arrive on time, be delayed, or be cancelled on Sep 26?Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
- Not available
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.
- 35 min early
YUL → ORD
- 15 min early
YUL → ORD
- 23 min early
YUL → ORD
- 12 min early
YUL → ORD
- 12 min late
YUL → ORD
Flight history and details
Aug 27, 2026 — Sep 26, 2026
- Observed arrivals
- 18
- Arrivals over 15 minutes late
- 4
- Observed cancellations
- 1
- Observed occurrences
- 19
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 25, 2026Arrived | Montreal | Chicago | -35 | |
| Sep 24, 2026Arrived | Montreal | Chicago | -15 | |
| Sep 23, 2026Arrived | Montreal | Chicago | -23 | |
| Sep 22, 2026Arrived | Montreal | Chicago | -12 | |
| Sep 21, 2026Arrived | Montreal | Chicago | 12 | |
| Sep 20, 2026Arrived | Montreal | Chicago | 8 | |
| Sep 19, 2026Cancelled | Montreal | Chicago | Not available | Not available |
| Sep 18, 2026Arrived | Montreal | Chicago | 65 | |
| Sep 17, 2026Arrived | Montreal | Chicago | 127 | |
| Sep 16, 2026Arrived | Montreal | Chicago | -13 | |
| Sep 15, 2026Arrived | Montreal | Chicago | 57 | |
| Sep 14, 2026Arrived | Montreal | Chicago | -17 | |
| Sep 13, 2026Arrived | Montreal | Chicago | -22 | |
| Sep 12, 2026Arrived | Montreal | Chicago | 9 | |
| Sep 11, 2026Arrived | Montreal | Chicago | -28 | |
| Sep 10, 2026Arrived | Montreal | Chicago | 18 | |
| Sep 9, 2026Arrived | Montreal | Chicago | -11 | |
| Sep 8, 2026Arrived | Montreal | Chicago | -19 | |
| Sep 7, 2026Arrived | Montreal | Chicago | -36 |