United Airlines
Is UA3865 delayed?
Yes — UA3865 left Houston 100 min late, at 08:46 on Sep 21; its arrival time is not confirmed yet.
100 min late
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Houston
IAH
Actual
Scheduled 07:06
Sep 21
Arrival
Houston
IAH
Scheduled
Sep 21
Times shown in airport local time
Service date: · Scheduled departure date (America/Chicago)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
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.
- On schedule (6 min behind)
Miami → Houston
- 436 min late
Dulles → Dulles
Is UA3865 usually late?
Observation window: Aug 30, 2026 – Sep 29, 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
Houston (IAH) departures
- Left more than 15 min late
- 22 of 271
- Cancelled today
- 1
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 14, 2026Arrived | Miami | Houston | 6 | |
| Sep 8, 2026Arrived | Dulles | Dulles | 436 |
Email me if UA3865 runs late
We email you if your next UA3865 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.