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United Airlines

Is UA8456 delayed?

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

Arrived

On time

Official source · Updated

Departure

Denver

DEN

Scheduled

Not available

Arrival

Toronto

YYZ

Actual

Sep 8

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Not available
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Actual

Operating flight: ACA1723

Route overview: Denver → TorontoDENYYZ
Route overview

Recent arrivals

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

  • DEN → YYZ

    6 min early

  • DEN → YYZ

    22 min early

  • DEN → YYZ

    77 min late

  • DEN → YYZ

    295 min late

  • DEN → YYZ

    15 min late
Flight history and details

Aug 23, 2026 — Sep 22, 2026

Observed arrivals
19
Arrivals over 15 minutes late
4
Observed cancellations
0
Observed occurrences
19

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

UA8456 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 21, 2026ArrivedDenverToronto
-6
Sep 20, 2026ArrivedDenverToronto
-22
Sep 19, 2026ArrivedDenverToronto
77
Sep 18, 2026ArrivedDenverToronto
295
Sep 17, 2026ArrivedDenverToronto
15
Sep 16, 2026ArrivedDenverToronto
23
Sep 15, 2026ArrivedDenverToronto
1
Sep 14, 2026ArrivedDenverToronto
13
Sep 13, 2026ArrivedDenverToronto
155
Sep 12, 2026ArrivedDenverToronto
-17
Sep 11, 2026ArrivedDenverToronto
-7
Sep 10, 2026ArrivedDenverToronto
-18
Sep 9, 2026ArrivedDenverToronto
-22
Sep 8, 2026ArrivedDenverToronto
0
Sep 7, 2026ArrivedDenverToronto
9
Sep 6, 2026ArrivedDenverToronto
14
Sep 5, 2026ArrivedDenverToronto
12
Sep 4, 2026ArrivedDenverToronto
-1
Sep 3, 2026ArrivedDenverToronto
5

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