Flight Status & Tracker

UAL3931

UNITED AIRLINES INC · SEA → SFO · Last tracked Oct 10, 2026

UAL3931 is a flight number operated by UNITED AIRLINES INC between Seattle Tacoma International Airport (KSEA) and San Francisco International Airport (KSFO). SkyMeter last tracked UAL3931 on October 10, 2026. The flight is most often flown by a AIRBUS Airbus A320. Typical block time is 2h 6m. SkyMeter has observed 25 legs of this flight number via ADS-B.

SkyMeter tracks historical flight activity from ADS-B data — this is not a live gate-to-gate status feed.

✈
FLIGHTS
25
last 90 days
⏱
AVG DURATION
2h 6m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 10/10/2026
first → last seen
🗺
ROUTES / TYPES
23 / 10
city pairs · airframes
⚠
INCIDENT RATE
4.0%
1 flagged

Routes flown

By count · last 90 days

10
KSEA → KSFO
2
avg 2h 12m · Seattle Tacoma → San Francisco
KEWR → KBDL
1
avg 29m · Newark Liberty → Bradley
KIAH → KORD
1
avg 3h 5m · George Bush Intercontinental Houston → Chicago O'Hare
KMCO → KROC
1
avg 2h 23m · Orlando → Greater Rochester
KORD → KSFO
1
avg 4h 18m · Chicago O'Hare → San Francisco
KORD → KDEN
1
avg 2h 16m · Chicago O'Hare → Denver
KORD → KBUF
1
avg 1h 6m · Chicago O'Hare → Buffalo Niagara
KSFO → KDEN
1
avg 2h 34m · San Francisco → Denver
KMCO → KORD
1
avg 2h 37m · Orlando → Chicago O'Hare
KMSN → KIAD
1
avg 1h 44m · Dane County Regional Truax Field → Washington Dulles

Aircraft types

Equipment used on this number

10
A320 AIRBUS Airbus A320
4
B39M BOEING Boeing 737 MAX 9
4
B753 BOEING Boeing 757-300
3
B739 BOEING Boeing 737-900
3
B789 BOEING Boeing 787-9 Dreamliner
3
A319 AIRBUS Airbus A319
3
B38M BOEING Boeing 737 MAX 8
2
A21N AIRBUS Airbus A321 Neo
2
B772 BOEING Boeing 777-200
1
B764 BOEING Boeing 767-400
1

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
0
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of UAL3931

30
N29989BOEING Boeing 787-9 Dreamliner
→
10/10/2026
3h 44m
No alerts
Replay Analysis
N29989BOEING Boeing 787-9 Dreamliner
→
10/9/2026
2h 6m
No alerts
Replay Analysis
N37295BOEING Boeing 737 MAX 8
→
10/4/2026
1h 43m
↻ Go-around
Replay Analysis
N19986BOEING Boeing 787-9 Dreamliner
→
10/2/2026
2h 33m
No alerts
Replay Analysis
N451UAAIRBUS Airbus A320
→
9/30/2026
1h 23m
No alerts
Replay Analysis
N451UAAIRBUS Airbus A320
→
9/30/2026
1h 6m
No alerts
Replay Analysis
N451UAAIRBUS Airbus A320
→
9/30/2026
2h 30m
No alerts
Replay Analysis
N14506AIRBUS Airbus A321 Neo
→
9/23/2026
3h 49m
No alerts
Replay Analysis
N14548AIRBUS Airbus A321 Neo
→
9/22/2026
1h 15m
No alerts
Replay Analysis
N38268BOEING Boeing 737-800
→
9/21/2026
1h 5m
No alerts
Replay Analysis
N801UAAIRBUS Airbus A319
→
9/19/2026
12m
No alerts
Replay Analysis
N801UAAIRBUS Airbus A319
→
9/19/2026
1h 26m
No alerts
Replay Analysis
N17564BOEING Boeing 737 MAX 9
→
9/17/2026
1h 25m
No alerts
Replay Analysis
N61111
→
9/15/2026
4h 18m
No alerts
Replay Analysis
N828UAAIRBUS Airbus A319
→
9/8/2026
2h 15m
No alerts
Replay Analysis
N17279BOEING Boeing 737 MAX 8
→
9/5/2026
29m
No alerts
Replay Analysis
N57478BOEING Boeing 737 MAX 9
→
9/3/2026
52m
No alerts
Replay Analysis
N39450BOEING Boeing 737-900
→
9/1/2026
50m
No alerts
Replay Analysis
N774UABOEING Boeing 777-200
→
8/27/2026
1h 36m
No alerts
Replay Analysis
N37472BOEING Boeing 737 MAX 9
→
8/20/2026
2h 16m
No alerts
Replay Analysis
N68061BOEING Boeing 767-400
→
8/15/2026
1h 5m
No alerts
Replay Analysis
N37456BOEING Boeing 737-900
→
8/13/2026
2h 22m
No alerts
Replay Analysis
N17460BOEING Boeing 737 MAX 9
→
8/11/2026
4h 40m
No alerts
Replay Analysis
N464UAAIRBUS Airbus A320
→
8/7/2026
2h 8m
No alerts
Replay Analysis
N77871BOEING Boeing 757-300
→
8/7/2026
1h 39m
No alerts
Replay Analysis
N77871BOEING Boeing 757-300
→
8/7/2026
1h 25m
No alerts
Replay Analysis
N77871BOEING Boeing 757-300
→
8/7/2026
3h 4m
No alerts
Replay Analysis
N69833BOEING Boeing 737-900
→
7/29/2026
2h 36m
No alerts
Replay Analysis
N38727BOEING Boeing 737-700
→
7/28/2026
2h 4m
No alerts
Replay Analysis
N77582BOEING Boeing 737 MAX 9
→
7/26/2026
3h 21m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window