United Airlines
Is UA4455 delayed?
No delay reported yet — UA4455 is scheduled to leave Ottawa at 19:44 on Sep 29 and reach Dulles at 21:08 (as of Sep 29, 19:16 UTC).
Usually on time: arrived within 15 min of schedule on 17 of the last 24 flights.
No live update yet
Showing the published schedule until live times are reported.
Update time unavailable
Departure
Ottawa
YOW
Scheduled
Sep 29
Arrival
Dulles
IAD
Scheduled
Sep 29
Times shown in airport local time
Service date: · Scheduled departure date (America/Toronto)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 12 min early
Ottawa → Dulles
- 19 min early
Ottawa → Dulles
- 30 min late
Ottawa → Dulles
- 59 min late
Ottawa → Dulles
- 9 min early
Ottawa → Dulles
Is UA4455 usually late?
Observation window: Aug 30, 2026 – Sep 29, 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
Dulles (IAD) departures
- Left more than 15 min late
- 16 of 112
- Cancelled today
- 0
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 28, 2026Arrived | Ottawa | Dulles | -12 | |
| Sep 27, 2026Arrived | Ottawa | Dulles | -19 | |
| Sep 26, 2026Arrived | Ottawa | Dulles | 30 | |
| Sep 25, 2026Arrived | Ottawa | Dulles | 59 | |
| Sep 24, 2026Arrived | Ottawa | Dulles | -9 | |
| Sep 23, 2026Arrived | Ottawa | Dulles | 27 | |
| Sep 22, 2026Arrived | Ottawa | Dulles | -14 | |
| Sep 21, 2026Arrived | Ottawa | Dulles | 84 | |
| Sep 20, 2026Arrived | Ottawa | Dulles | 4 | |
| Sep 19, 2026Arrived | Ottawa | Dulles | 0 | |
| Sep 18, 2026Arrived | Ottawa | Dulles | 16 | |
| Sep 17, 2026Arrived | Ottawa | Dulles | 93 | |
| Sep 16, 2026Arrived | Ottawa | Dulles | -1 | |
| Sep 15, 2026Arrived | Ottawa | Dulles | 67 | |
| Sep 14, 2026Arrived | Ottawa | Dulles | 8 | |
| Sep 13, 2026Arrived | Ottawa | Dulles | 0 | |
| Sep 12, 2026Arrived | Ottawa | Dulles | -13 | |
| Sep 11, 2026Arrived | Ottawa | Dulles | -17 | |
| Sep 10, 2026Arrived | Ottawa | Dulles | 0 | |
| Sep 9, 2026Arrived | Ottawa | Dulles | -29 | |
| Sep 8, 2026Arrived | Ottawa | Dulles | -27 | |
| Sep 7, 2026Arrived | Ottawa | Dulles | -22 | |
| Sep 6, 2026Arrived | Ottawa | Dulles | -19 | |
| Sep 5, 2026Arrived | Ottawa | Dulles | 3 |
Email me if UA4455 runs late
We email you if your next UA4455 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.