UAL8139

UNITED AIRLINES INC · SFO → LAS

UAL8139 is operated by UNITED AIRLINES INC between San Francisco International Airport (KSFO) and McCarran International Airport (KLAS). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 50m. SkyMeter has observed 23 legs of this flight number via ADS-B.

✈
FLIGHTS
23
last 90 days
⏱
AVG DURATION
1h 50m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 06/22/2026
first → last seen
🗺
ROUTES / TYPES
13 / 8
city pairs · airframes
⚠
INCIDENT RATE
8.7%
2 flagged

Routes flown

By count · last 90 days

10
KSFO → KLAS
5
avg 1h 34m · San Francisco → McCarran
KDEN → KDFW
3
avg 1h 51m · Denver → Dallas Fort Worth
KIAH → KDEN
3
avg 2h 6m · George Bush Intercontinental Houston → Denver
KIAD → KFLL
2
avg 2h 32m · Washington Dulles → Fort Lauderdale Hollywood
KSBP → KSFO
1
avg 56m · San Luis County → San Francisco
KPDX → KSFO
1
avg 1h 29m · Portland → San Francisco
KDEN → TJSJ
1
avg 5h 33m · Denver → Luis Munoz Marin
KBOS → KEWR
1
avg 58m · General Edward Lawrence Logan → Newark Liberty
KDFW → KEWR
1
avg 2h 49m · Dallas Fort Worth → Newark Liberty
KORD → KROC
1
avg 1h 14m · Chicago O'Hare → Greater Rochester

Aircraft types

Equipment used on this number

8
B38M BOEING Boeing 737 MAX 8
9
A319 AIRBUS Airbus A319
6
A21N AIRBUS Airbus A321 Neo
2
B39M BOEING Boeing 737 MAX 9
2
A320 AIRBUS Airbus A320
1
B738 BOEING Boeing 737-800
1
B753 BOEING Boeing 757-300
1
B739 BOEING Boeing 737-900
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
2
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 UAL8139

30
N47369BOEING Boeing 737 MAX 8
→
06/22/2026
7m
No alerts
Replay Analysis
N47369BOEING Boeing 737 MAX 8
→
06/22/2026
1h 34m
No alerts
Replay Analysis
N37353BOEING Boeing 737 MAX 8
→
06/19/2026
57m
No alerts
Replay Analysis
N34222BOEING Boeing 737-800
→
06/17/2026
1h 13m
No alerts
Replay Analysis
N17337BOEING Boeing 737 MAX 8
→
06/16/2026
6m
No alerts
Replay Analysis
N17337BOEING Boeing 737 MAX 8
→
06/16/2026
1h 30m
No alerts
Replay Analysis
N47282BOEING Boeing 737 MAX 8
→
06/12/2026
1h 44m
No alerts
Replay Analysis
N37278BOEING Boeing 737 MAX 8
→
06/09/2026
1h 39m
No alerts
Replay Analysis
N37372BOEING Boeing 737 MAX 8
→
05/28/2026
1h 29m
No alerts
Replay Analysis
N839UAAIRBUS Airbus A319
→
05/26/2026
2h 49m
No alerts
Replay Analysis
N37372BOEING Boeing 737 MAX 8
→
05/22/2026
1h 24m
No alerts
Replay Analysis
N69818BOEING Boeing 737-900
→
05/20/2026
2h 31m
No alerts
Replay Analysis
N57868BOEING Boeing 757-300
→
05/19/2026
4h 10m
No alerts
Replay Analysis
N496UAAIRBUS Airbus A320
→
05/17/2026
55m
No alerts
Replay Analysis
N14544AIRBUS Airbus A321 Neo
→
04/21/2026
2h 3m
No alerts
Replay Analysis
N37514BOEING Boeing 737 MAX 9
→
04/18/2026
5h 32m
No alerts
Replay Analysis
N24510AIRBUS Airbus A321 Neo
→
04/12/2026
2h 7m
△ Unstable
Replay Analysis
N815UAAIRBUS Airbus A319
→
04/10/2026
1h 49m
No alerts
Replay Analysis
N807UAAIRBUS Airbus A319
→
04/06/2026
11m
No alerts
Replay Analysis
N807UAAIRBUS Airbus A319
→
04/06/2026
1h 51m
No alerts
Replay Analysis
N835UAAIRBUS Airbus A319
→
04/05/2026
2h 8m
△ Unstable
Replay Analysis
N17435BOEING Boeing 737 MAX 9
→
04/04/2026
2h 32m
No alerts
Replay Analysis
N890UAAIRBUS Airbus A319
→
04/03/2026
1h 52m
No alerts
Replay Analysis
N17753BOEING Boeing 737-700
→
03/25/2026
23m
No alerts
Replay Analysis
N14521AIRBUS Airbus A321 Neo
→
03/08/2026
44m
No alerts
Replay Analysis
N14521AIRBUS Airbus A321 Neo
→
03/08/2026
44m
No alerts
Replay Analysis
N14521AIRBUS Airbus A321 Neo
→
03/08/2026
44m
No alerts
Replay Analysis
N14521AIRBUS Airbus A321 Neo
→
03/08/2026
44m
No alerts
Replay Analysis
N14521AIRBUS Airbus A321 Neo
→
03/08/2026
44m
No alerts
Replay Analysis
N14521AIRBUS Airbus A321 Neo
→
03/08/2026
44m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window