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United Airlines

Is UA646 delayed?

Service date: · Scheduled arrival date; departure time unavailable (UTC)

Estimated arrivalLast reported

22 min early

This update may be out of date.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

Update time unavailable

Departure

Chicago

ORD

Scheduled

Not available

Arrival

Montreal

YUL

Estimated

Scheduled 21:30

Sep 16

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Not available
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Actual
Not available

Recent arrivals

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

  • ORD → YUL

    61 min late

  • ORD → YUL

    26 min early

  • ORD → YUL

    55 min late

  • ORD → YUL

    4 min early

  • ORD → YUL

    63 min late
Flight history and details

Aug 17, 2026 — Sep 16, 2026

Observed arrivals
27
Arrivals over 15 minutes late
10
Observed cancellations
0
Observed occurrences
29

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

UA646 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 15, 2026ArrivedChicagoMontreal
61
Sep 14, 2026ArrivedChicagoMontreal
-26
Sep 13, 2026ArrivedChicagoMontreal
55
Sep 12, 2026ArrivedChicagoMontreal
-4
Sep 11, 2026ArrivedChicagoMontreal
63
Sep 10, 2026ArrivedChicagoMontreal
-30
Sep 9, 2026ArrivedChicagoMontreal
-3
Sep 8, 2026ArrivedChicagoMontreal
-10
Sep 7, 2026ArrivedChicagoMontreal
-6
Sep 6, 2026ArrivedChicagoMontreal
32
Sep 5, 2026ArrivedChicagoMontreal
-10
Sep 4, 2026ArrivedChicagoMontreal
-7
Sep 3, 2026ArrivedChicagoMontreal
25
Sep 2, 2026ArrivedChicagoMontreal
-7
Sep 1, 2026ArrivedChicagoMontreal
7
Aug 31, 2026ArrivedChicagoMontreal
161
Aug 29, 2026ArrivedChicagoMontreal
-20
Aug 28, 2026ArrivedChicagoMontreal
9
Aug 27, 2026ArrivedChicagoMontreal
122
Aug 26, 2026ArrivedChicagoMontreal
-16
Aug 25, 2026ArrivedChicagoMontreal
-11
Aug 24, 2026ArrivedChicagoMontreal
59
Aug 23, 2026ArrivedChicagoMontreal
20
Aug 22, 2026ArrivedChicagoMontreal
-21
Aug 20, 2026ArrivedChicagoMontreal
78
Aug 19, 2026ArrivedChicagoMontreal
-24
Aug 18, 2026ArrivedChicagoMontreal
-23

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