Is UA3891 delayed?
Yes — UA3891 landed in San Francisco 19 min late, at 09:29 on Sep 29 (as of Sep 29, 17:04 UTC). Over its last 7 recorded arrivals, 5 landed more than 15 min late.
19 min late
Official source · Updated
Departure
Arcata/Eureka
ACV
Scheduled
Not available
Arrival
San Francisco
SFO
Actual
Scheduled 09:10
Sep 29
Times shown in airport local time
Service date: · Scheduled arrival date; departure time unavailable (America/Los_Angeles)
Market settled: Delayed.
Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 19 min late
Arcata/Eureka → San Francisco
- 32 min late
Chicago/Rockford → Los Angeles
- 19 min early
Denver → Portland
- On schedule (6 min behind)
Amarillo → Houston
- 64 min late
Melbourne → Chicago
Is UA3891 usually late?
Observation window: Aug 31, 2026 – Sep 30, 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
San Francisco (SFO) departures
- Left more than 15 min late
- 156 of 454
- Cancelled today
- 2
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 29, 2026Arrived | Arcata/Eureka | San Francisco | 19 | |
| Sep 27, 2026Arrived | Chicago/Rockford | Los Angeles | 32 | |
| Sep 24, 2026Arrived | Denver | Portland | -19 | |
| Sep 22, 2026Arrived | Amarillo | Houston | 6 | |
| Sep 19, 2026Cancelled | Honolulu | Kahului | Not available | Not available |
| Sep 14, 2026Arrived | Melbourne | Chicago | 64 | |
| Sep 5, 2026Arrived | Lake City | Chicago | 151 | |
| Sep 5, 2026Arrived | Chicago | Lake City | 140 |
Email me if UA3891 runs late
We email you if your next UA3891 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.