Is UA4187 delayed?
Service date: · Scheduled departure date (America/New_York)
Last reported
Cancelled
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Newark
EWR
Scheduled
Aug 27
Arrival
Buffalo
BUF
Scheduled
Aug 28
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
EWRBUF
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 35 min late
DAY → IAD
- 21 min early
DAY → IAD
- 22 min early
DAY → IAD
- 14 min early
DAY → IAD
- 5 min early
DAY → IAD
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 15
- Arrivals over 15 minutes late
- 1
- Observed cancellations
- 4
- Observed occurrences
- 29
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 17, 2026Arrived | Dayton | Dulles | 35 | |
| Sep 16, 2026Arrived | Dayton | Dulles | -21 | |
| Sep 14, 2026Arrived | Dayton | Dulles | -22 | |
| Sep 12, 2026Arrived | Dayton | Dulles | -14 | |
| Sep 11, 2026Arrived | Dayton | Dulles | -5 | |
| Sep 10, 2026Arrived | Dayton | Dulles | -20 | |
| Sep 9, 2026Arrived | Dayton | Dulles | -26 | |
| Sep 8, 2026Arrived | Little Rock | Houston | -19 | |
| Sep 7, 2026Arrived | Newark | Buffalo | -37 | |
| Sep 6, 2026Arrived | Newark | Buffalo | -29 | |
| Sep 5, 2026Arrived | Newark | Buffalo | -33 | |
| Sep 4, 2026Arrived | Newark | Buffalo | -1 | |
| Sep 2, 2026Cancelled | Newark | Buffalo | Not available | Not available |
| Sep 1, 2026Cancelled | Newark | Buffalo | Not available | Not available |
| Aug 28, 2026Arrived | Newark | Buffalo | -29 | |
| Aug 27, 2026Cancelled | Newark | Buffalo | Not available | Not available |
| Aug 21, 2026Arrived | Newark | Buffalo | -43 | |
| Aug 20, 2026Cancelled | Newark | Buffalo | Not available | Not available |