United Airlines
Is UA3931 delayed?
Service date: · Scheduled departure date (America/Chicago)
Arrived
7 min late
Official source · Updated
Departure
Chicago
ORD
Scheduled
Sep 14
Arrival
San Francisco
SFO
Actual
Scheduled 23:57
Sep 15
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 7 min late
ORD → SFO
- <1 min late
ORD → DEN
- 8 min early
EWR → BDL
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 3
- Arrivals over 15 minutes late
- 0
- Observed cancellations
- 4
- Observed occurrences
- 7
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 14, 2026Arrived | Chicago | San Francisco | 7 | |
| Sep 11, 2026Cancelled | Barcelona | Newark | Not available | Not available |
| Sep 10, 2026Cancelled | Honolulu | Denver | Not available | Not available |
| Sep 10, 2026Cancelled | Lihue | Honolulu | Not available | Not available |
| Sep 9, 2026Cancelled | Denver | Lihue | Not available | Not available |
| Sep 7, 2026Arrived | Chicago | Denver | 0 | |
| Sep 5, 2026Arrived | Newark | Hartford | -8 |