Is UA4459 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled arrival date; departure time unavailable (America/New_York)
On time
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Dulles
IAD
Scheduled
Not available
Arrival
Philadelphia
PHL
Estimated
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
Service date: · Scheduled departure date (UTC)
No live update yet
Check with your airline for the latest status.
Update time unavailable
Departure
Ottawa
YOW
Scheduled
Sep 16
Arrival
Dulles
IAD
Scheduled
Sep 16
Times shown in airport local time
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.
- 25 min early
IAD → PHL
- 6 min early
YOW → IAD
- 19 min early
IAD → PHL
- 7 min early
YOW → IAD
- 18 min early
IAD → PHL
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 19
- Arrivals over 15 minutes late
- 0
- 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.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 15, 2026Arrived | Dulles | Philadelphia | -25 | |
| Sep 15, 2026Arrived | Ottawa | Dulles | -6 | |
| Sep 14, 2026Arrived | Dulles | Philadelphia | -19 | |
| Sep 14, 2026Arrived | Ottawa | Dulles | -7 | |
| Sep 13, 2026Arrived | Dulles | Philadelphia | -18 | |
| Sep 13, 2026Arrived | Ottawa | Dulles | -20 | |
| Sep 12, 2026Arrived | Ottawa | Dulles | -24 | |
| Sep 11, 2026Arrived | Dulles | Philadelphia | -13 | |
| Sep 11, 2026Arrived | Ottawa | Dulles | -27 | |
| Sep 10, 2026Arrived | Dulles | Philadelphia | -29 | |
| Sep 10, 2026Arrived | Ottawa | Dulles | -24 | |
| Sep 9, 2026Arrived | Dulles | Philadelphia | -19 | |
| Sep 9, 2026Arrived | Ottawa | Dulles | -30 | |
| Sep 8, 2026Arrived | Dulles | Philadelphia | -26 | |
| Sep 8, 2026Arrived | Ottawa | Dulles | -30 | |
| Sep 7, 2026Arrived | Ottawa | Dulles | -25 | |
| Sep 6, 2026Arrived | Ottawa | Dulles | -14 | |
| Sep 5, 2026Arrived | Ottawa | Dulles | -20 | |
| Sep 4, 2026Arrived | Ottawa | Dulles | 4 |