UAL3931

UNITED AIRLINES INC · SEA → SFO

UAL3931 is operated by UNITED AIRLINES INC between Seattle Tacoma International Airport (KSEA) and San Francisco International Airport (KSFO). The flight is most often flown by a AIRBUS Airbus A320. Typical block time is 2h 28m. SkyMeter has observed 26 legs of this flight number via ADS-B.

✈
FLIGHTS
26
last 90 days
⏱
AVG DURATION
2h 28m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/20/2026
first → last seen
🗺
ROUTES / TYPES
24 / 10
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

10
KLAX → KSFO
2
avg 1h 25m · Los Angeles → San Francisco
KSEA → KSFO
2
avg 2h 12m · Seattle Tacoma → San Francisco
KTPA → KDEN
1
avg 3h 21m · Tampa → Denver
KIAH → KORD
1
avg 3h 5m · George Bush Intercontinental Houston → Chicago O'Hare
KORD → KATW
1
avg 37m · Chicago O'Hare → Appleton
CYYZ → KORD
1
avg 1h 55m · Lester B. Pearson → Chicago O'Hare
KTPA → KORD
1
avg 2h 30m · Tampa → Chicago O'Hare
KMCO → KROC
1
avg 2h 23m · Orlando → Greater Rochester
KMCO → KORD
1
avg 2h 37m · Orlando → Chicago O'Hare
KEWR → KIAH
1
avg 3h 7m · Newark Liberty → George Bush Intercontinental Houston

Aircraft types

Equipment used on this number

10
A320 AIRBUS Airbus A320
5
B39M BOEING Boeing 737 MAX 9
5
B739 BOEING Boeing 737-900
4
B753 BOEING Boeing 757-300
3
B38M BOEING Boeing 737 MAX 8
2
A319 AIRBUS Airbus A319
2
B764 BOEING Boeing 767-400
2
B772 BOEING Boeing 777-200
1
B752 BOEING Boeing 757-200
1
A21N AIRBUS Airbus A321 Neo
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
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
N37472BOEING Boeing 737 MAX 9
→
08/20/2026
2h 16m
No alerts
Replay Analysis
N68061BOEING Boeing 767-400
→
08/15/2026
1h 5m
No alerts
Replay Analysis
N37456BOEING Boeing 737-900
→
08/13/2026
2h 22m
No alerts
Replay Analysis
N17460BOEING Boeing 737 MAX 9
→
08/11/2026
4h 40m
No alerts
Replay Analysis
N464UAAIRBUS Airbus A320
→
08/07/2026
2h 8m
No alerts
Replay Analysis
N77871BOEING Boeing 757-300
→
08/07/2026
1h 39m
No alerts
Replay Analysis
N77871BOEING Boeing 757-300
→
08/06/2026
1h 25m
No alerts
Replay Analysis
N77871BOEING Boeing 757-300
→
08/06/2026
3h 4m
No alerts
Replay Analysis
N69833BOEING Boeing 737-900
→
07/29/2026
2h 36m
No alerts
Replay Analysis
N38727BOEING Boeing 737-700
→
07/28/2026
2h 4m
No alerts
Replay Analysis
N77582BOEING Boeing 737 MAX 9
→
07/26/2026
3h 21m
No alerts
Replay Analysis
N14515AIRBUS Airbus A321 Neo
→
07/22/2026
3h 19m
No alerts
Replay Analysis
N37318BOEING Boeing 737 MAX 8
→
07/20/2026
3h 6m
No alerts
Replay Analysis
N467UAAIRBUS Airbus A320
→
07/18/2026
1h 15m
No alerts
Replay Analysis
N4901UAIRBUS Airbus A320
→
07/16/2026
1h 55m
No alerts
Replay Analysis
N78003BOEING Boeing 777-200
→
07/15/2026
9h 25m
No alerts
Replay Analysis
N34131BOEING Boeing 757-200
→
07/10/2026
1h 37m
No alerts
Replay Analysis
N37470BOEING Boeing 737-900
→
07/09/2026
1h 45m
No alerts
Replay Analysis
N454UAAIRBUS Airbus A320
→
06/29/2026
1h 18m
No alerts
Replay Analysis
N68061BOEING Boeing 767-400
→
06/26/2026
1h 13m
No alerts
Replay Analysis
N475UAAIRBUS Airbus A320
→
06/21/2026
37m
No alerts
Replay Analysis
N819UAAIRBUS Airbus A319
→
06/19/2026
1h 55m
No alerts
Replay Analysis
N38268BOEING Boeing 737-800
→
06/16/2026
2h 0m
No alerts
Replay Analysis
N17455BOEING Boeing 737 MAX 9
→
06/14/2026
2h 29m
No alerts
Replay Analysis
N897UAAIRBUS Airbus A319
→
06/11/2026
2h 1m
No alerts
Replay Analysis
N47414BOEING Boeing 737-900
→
06/09/2026
2h 29m
No alerts
Replay Analysis
N57409BOEING Boeing 737 MAX 9
→
05/30/2026
1h 13m
No alerts
Replay Analysis
N27268BOEING Boeing 737 MAX 8
→
05/25/2026
3h 4m
No alerts
Replay Analysis
N78001BOEING Boeing 777-200
→
05/24/2026
9h 15m
No alerts
Replay Analysis
N78001BOEING Boeing 777-200
→
05/24/2026
4h 27m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window