United Airlines
Is UA3909 delayed?
UA3909 left Houston 16 min early, at 05:00 on Nov 15. Arrival time not confirmed yet. Of its last 10 arrivals graded against a published schedule, 4 landed more than 15 min late.
16 min early
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Houston
IAH
Actual
Scheduled 05:16
Nov 15
Arrival
San Francisco
SFO
Scheduled
Nov 15
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.
- 5 min early
Pittsburgh → Newark
- 29 min late
Denver → Austin
- On schedule (15 min behind)
Orlando → Fort Myers
- 35 min early
Cleveland → Denver
- On schedule (2 min behind)
Los Angeles → San Diego
Is UA3909 usually late?
Period: Oct 16, 2026 – Nov 15, 2026
Not graded: 3, with no published arrival schedule to compare against. They are in no other figure.
Percentages and delay figures appear once 20 arrivals are graded.
On time means landing no more than 15 minutes after the scheduled arrival, late more than 15 minutes after, both times read to the minute. The percentages share one base: graded arrivals plus cancelled and diverted flights. A cancelled plan another plan of the flight replaced within 12 hours is not counted. Median and “9 in 10” are interpolated over the graded arrivals. Compares scheduled and actual arrival times, read to the minute. Some flights may be missing.
Departures on record at these airports today
Houston (IAH) departures
Too few departures on record with a known outcome so far today to judge: 6 of 20 needed.
Flights from Houston to San Francisco todaySan Francisco (SFO) departures
Too few departures on record with a known outcome so far today to judge: 5 of 20 needed.
Counts cover the departures on record at each airport, not its full schedule.
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Nov 14, 2026Arrived | Pittsburgh | Newark | -5 | |
| Nov 13, 2026Cancelled | Aguadilla | Newark | Not available | Not available |
| Nov 11, 2026Arrived | Denver | Austin | 29 | |
| Nov 10, 2026Cancelled | Cancun | San Francisco | Not available | Not available |
| Nov 9, 2026Arrived | Orlando | Fort Myers | 15 | |
| Nov 8, 2026Cancelled | Jackson | Denver | Not available | Not available |
| Nov 7, 2026Arrived | Cleveland | Denver | -35 | |
| Nov 6, 2026Arrived | Los Angeles | San Diego | 2 | |
| Nov 5, 2026Arrived | Chicago | San Francisco | -21 | |
| Nov 4, 2026Cancelled | Memphis | Denver | Not available | Not available |
| Nov 3, 2026Arrived | Chicago | Los Angeles | 29 | |
| Oct 26, 2026Arrived | Denver | Los Angeles | 369 | |
| Oct 25, 2026Arrived | Chicago | Denver | 43 | |
| Oct 23, 2026Arrived | Chicago | Houston | -24 | |
| Oct 21, 2026Cancelled | Chicago | Orlando | Not available | Not available |
| Oct 18, 2026Cancelled | Madison | Chicago | Not available | Not available |