Is UA1263 delayed?
No delay reported yet — UA1263 is scheduled to leave Ontario at 13:36 on Sep 30 and reach Denver at 16:45 (as of Sep 30, 10:12 UTC).
Usually on time: arrived within 15 min of schedule on 22 of the last 25 flights.
No live update yet
Showing the published schedule until live times are reported.
Update time unavailable
Departure
Ontario
ONT
Scheduled
Sep 30
Arrival
Denver
DEN
Scheduled
Sep 30
Times shown in airport local time
Service date: · Scheduled departure date (America/Los_Angeles)
Think UA1263 runs late today? Delayed is trading at 15¢ — pays out x6.87.
Will United Airlines UAL 1263 from Ontario to Denver arrive on time, be delayed, or be cancelled on Sep 30?Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- 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.
- 12 min early
Ontario → Denver
- 15 min early
Ontario → Denver
- 18 min early
Ontario → Denver
- 20 min early
Ontario → Denver
- 115 min late
Ontario → Denver
Is UA1263 usually late?
Observation window: Aug 31, 2026 – Sep 30, 2026
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
At the airports today
Denver (DEN) departures
- Left more than 15 min late
- 1 of 1
- Cancelled today
- 0
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 29, 2026Arrived | Ontario | Denver | -12 | |
| Sep 28, 2026Arrived | Ontario | Denver | -15 | |
| Sep 27, 2026Arrived | Ontario | Denver | -18 | |
| Sep 26, 2026Arrived | Ontario | Denver | -20 | |
| Sep 25, 2026Arrived | Ontario | Denver | 115 | |
| Sep 24, 2026Arrived | Ontario | Denver | 17 | |
| Sep 23, 2026Arrived | Ontario | Denver | -1 | |
| Sep 22, 2026Arrived | Ontario | Denver | -24 | |
| Sep 21, 2026Arrived | Ontario | Denver | -21 | |
| Sep 20, 2026Arrived | Ontario | Denver | 8 | |
| Sep 19, 2026Arrived | Ontario | Denver | -13 | |
| Sep 18, 2026Arrived | Ontario | Denver | 63 | |
| Sep 17, 2026Arrived | Ontario | Denver | -12 | |
| Sep 16, 2026Arrived | Ontario | Denver | -8 | |
| Sep 15, 2026Arrived | Ontario | Denver | -15 | |
| Sep 14, 2026Arrived | Ontario | Denver | 9 | |
| Sep 12, 2026Arrived | Ontario | Denver | -9 | |
| Sep 11, 2026Arrived | Ontario | Denver | -14 | |
| Sep 10, 2026Arrived | Ontario | Denver | -11 | |
| Sep 9, 2026Arrived | Ontario | Denver | -4 | |
| Sep 8, 2026Arrived | Ontario | Denver | -12 | |
| Sep 7, 2026Arrived | Ontario | Denver | -28 | |
| Sep 6, 2026Arrived | Ontario | Denver | -14 | |
| Sep 5, 2026Arrived | Ontario | Denver | -24 | |
| Sep 4, 2026Arrived | Ontario | Denver | -13 |
Email me if UA1263 runs late
We email you if your next UA1263 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.