Flight Status & Tracker

UAL8140

UNITED AIRLINES INC · EWR → SFO · Last tracked Sep 25, 2026

UAL8140 is a flight number operated by UNITED AIRLINES INC between Newark Liberty International Airport (KEWR) and San Francisco International Airport (KSFO). SkyMeter last tracked UAL8140 on September 25, 2026. The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 2h 52m. SkyMeter has observed 45 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
45
last 90 days
⏱
AVG DURATION
2h 52m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 9/25/2026
first → last seen
🗺
ROUTES / TYPES
39 / 10
city pairs · airframes
⚠
INCIDENT RATE
2.2%
1 flagged

Routes flown

By count · last 90 days

10
KEWR → KSFO
3
avg 5h 56m · Newark Liberty → San Francisco
KSFO → KAUS
2
avg 3h 42m · San Francisco → Austin Bergstrom
KSFO → KLAX
2
avg 1h 38m · San Francisco → Los Angeles
KDEN → KSFO
2
avg 2h 24m · Denver → San Francisco
KSFO → KIAD
1
avg 5h 4m · San Francisco → Washington Dulles
KDEN → KALB
1
avg 3h 31m · Denver → Albany
KJYO → KCLE
1
avg 45m · Leesburg Executive → Cleveland Hopkins
KEWR → KLAS
1
avg 5h 7m · Newark Liberty → McCarran
KORD → KSAT
1
avg 2h 47m · Chicago O'Hare → San Antonio
KDEN → KBFL
1
avg 2h 35m · Denver → Meadows Field

Aircraft types

Equipment used on this number

10
B39M BOEING Boeing 737 MAX 9
12
B738 BOEING Boeing 737-800
10
A319 AIRBUS Airbus A319
6
A21N AIRBUS Airbus A321 Neo
6
B752 BOEING Boeing 757-200
5
B38M BOEING Boeing 737 MAX 8
4
B739 BOEING Boeing 737-900
4
B789 BOEING Boeing 787-9 Dreamliner
1
A320 AIRBUS Airbus A320
1
B753 BOEING Boeing 757-300
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
1
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 UAL8140

30
N37434BOEING Boeing 737-900
→
9/25/2026
3h 53m
No alerts
Replay Analysis
N77580BOEING Boeing 737 MAX 9
→
9/21/2026
3h 20m
No alerts
Replay Analysis
N24526AIRBUS Airbus A321 Neo
→
9/19/2026
2h 29m
No alerts
Replay Analysis
N14237BOEING Boeing 737-800
→
9/19/2026
3h 31m
No alerts
Replay Analysis
N37257BOEING Boeing 737 MAX 8
→
9/18/2026
2h 13m
No alerts
Replay Analysis
N37290BOEING Boeing 737-800
→
9/17/2026
3h 46m
No alerts
Replay Analysis
N436UAAIRBUS Airbus A320
→
9/16/2026
2h 47m
No alerts
Replay Analysis
N77525BOEING Boeing 737-800
→
9/15/2026
2h 5m
No alerts
Replay Analysis
N14541AIRBUS Airbus A321 Neo
→
9/14/2026
2h 8m
No alerts
Replay Analysis
N77295BOEING Boeing 737-800
→
9/12/2026
3h 17m
No alerts
Replay Analysis
N17454BOEING Boeing 737 MAX 9
→
9/11/2026
4h 5m
No alerts
Replay Analysis
N17599BOEING Boeing 737 MAX 9
→
9/11/2026
3h 58m
No alerts
Replay Analysis
N17599BOEING Boeing 737 MAX 9
→
9/11/2026
4h 49m
No alerts
Replay Analysis
N17599BOEING Boeing 737 MAX 9
→
9/11/2026
51m
No alerts
Replay Analysis
N77580BOEING Boeing 737 MAX 9
→
9/4/2026
2h 36m
No alerts
Replay Analysis
N47370BOEING Boeing 737 MAX 8
→
9/2/2026
5h 7m
No alerts
Replay Analysis
N17401BOEING Boeing 737 MAX 9
→
8/31/2026
29m
△ Low approach-stability score
Replay Analysis
N17401BOEING Boeing 737 MAX 9
→
8/30/2026
5h 11m
△ Low approach-stability score
Replay Analysis
N17401BOEING Boeing 737 MAX 9
→
8/30/2026
4h 41m
No alerts
Replay Analysis
N14566AIRBUS Airbus A321 Neo
→
8/24/2026
2h 28m
No alerts
Replay Analysis
N77295BOEING Boeing 737-800
→
8/22/2026
4h 6m
No alerts
Replay Analysis
N16234BOEING Boeing 737-800
→
8/20/2026
3h 38m
No alerts
Replay Analysis
N4888UAIRBUS Airbus A319
→
8/17/2026
45m
No alerts
Replay Analysis
N4888UAIRBUS Airbus A319
→
8/17/2026
9m
No alerts
Replay Analysis
N73860BOEING Boeing 757-300
→
8/16/2026
2h 19m
No alerts
Replay Analysis
N37324BOEING Boeing 737 MAX 8
→
8/15/2026
1h 57m
No alerts
Replay Analysis
N37324BOEING Boeing 737 MAX 8
→
8/15/2026
35m
No alerts
Replay Analysis
N77518BOEING Boeing 737-800
→
8/12/2026
1h 15m
No alerts
Replay Analysis
N11206BOEING Boeing 737-800
→
8/10/2026
1h 48m
No alerts
Replay Analysis
N34131BOEING Boeing 757-200
→
8/8/2026
5h 38m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window