United Airlines
Is UA4540 delayed?
No delay reported yet. UA4540 is scheduled to leave Dulles at 17:36 on Nov 14 and reach Detroit at 18:46 (as of Nov 14, 15:51 UTC). Of its last 9 arrivals, 2 landed more than 15 min late.
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Showing the published schedule until live times come in.
Update time unavailable
Departure
Dulles
IAD
Scheduled
Nov 14
Arrival
Detroit
DTW
Scheduled
Nov 14
Times shown in airport local time
Service date: · Scheduled departure date (America/New_York)
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.
- 4 min early
Dulles → Burlington
- On schedule (4 min behind)
Dulles → Burlington
- On schedule (12 min behind)
Dulles → Detroit
- 79 min late
Dulles → Burlington
- On schedule (6 min behind)
Dulles → Burlington
Is UA4540 usually late?
Period: Oct 15, 2026 – Nov 14, 2026
Percentages and delay figures appear once 10 arrivals are recorded.
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. Compares scheduled and actual arrival times. Cancelled and diverted flights are left out. Some flights may be missing.
At the airports today
Dulles (IAD) departures
- Left more than 15 min late
- 17 of 46
- Cancelled today
- 28
Detroit (DTW) departures
- Left more than 15 min late
- 41 of 57
- Cancelled today
- 54
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Nov 13, 2026Cancelled | Dulles | Burlington | Not available | Not available |
| Nov 12, 2026Arrived | Dulles | Burlington | -4 | |
| Nov 9, 2026Arrived | Dulles | Burlington | 4 | |
| Nov 7, 2026Arrived | Dulles | Detroit | 12 | |
| Nov 6, 2026Arrived | Dulles | Burlington | 79 | |
| Nov 2, 2026Arrived | Dulles | Burlington | 6 | |
| Nov 1, 2026Arrived | Dulles | Burlington | 5 | |
| Oct 31, 2026Arrived | Dulles | Detroit | -8 | |
| Oct 30, 2026Arrived | Dulles | Burlington | 18 | |
| Oct 29, 2026Arrived | Dulles | Burlington | -18 |