United Airlines
Is UA3929 delayed?
No — UA3929 landed in Boston 16 min early, at 00:23 on Sep 30 (as of Sep 30, 04:23 UTC). Over its last 4 recorded arrivals, 2 landed more than 15 min late.
16 min early
Official source · Updated
Departure
Dulles
IAD
Actual
Scheduled 23:14
Sep 29
Arrival
Boston
BOS
Actual
Scheduled 00:40
Sep 30
Times shown in airport local time
Service date: · Scheduled departure date (America/New_York)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 16 min early
Dulles → Boston
- 84 min late
Newark → Dulles
- 6 min early
Buffalo → Denver
- 249 min late
New Orleans → Houston
Is UA3929 usually late?
Observation window: Sep 1, 2026 – Oct 1, 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. 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
- 3 of 12
- Cancelled today
- 0
Boston (BOS) departures
- Left more than 15 min late
- 3 of 32
- Cancelled today
- 0
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 29, 2026Arrived | Dulles | Boston | -16 | |
| Sep 27, 2026Arrived | Newark | Dulles | 84 | |
| Sep 25, 2026Arrived | Buffalo | Denver | -6 | |
| Sep 23, 2026Arrived | New Orleans | Houston | 249 | |
| Sep 18, 2026Cancelled | Denver | Des Moines | Not available | Not available |
| Sep 16, 2026Cancelled | San Francisco | Dulles | Not available | Not available |
| Sep 14, 2026Cancelled | Chicago | Chicago | Not available | Not available |
| Sep 10, 2026Cancelled | Hebron | Chicago | Not available | Not available |
| Sep 9, 2026Cancelled | Melbourne | San Francisco | Not available | Not available |
Email me if UA3929 runs late
We email you if your next UA3929 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.