UAL8140

UNITED AIRLINES INC · EWR → SFO

UAL8140 is operated by UNITED AIRLINES INC between Newark Liberty International Airport (KEWR) and San Francisco International Airport (KSFO). The flight is most often flown by a BOEING Boeing 737-800. Typical block time is 2h 30m. SkyMeter has observed 53 legs of this flight number via ADS-B.

✈
FLIGHTS
53
last 90 days
⏱
AVG DURATION
2h 30m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/12/2026
first → last seen
🗺
ROUTES / TYPES
47 / 10
city pairs · airframes
⚠
INCIDENT RATE
1.9%
1 flagged

Routes flown

By count · last 90 days

10
KEWR → KSFO
3
avg 5h 56m · Newark Liberty → San Francisco
KDEN → KSAN
2
avg 2h 37m · Denver → San Diego
KIAD → KTPA
2
avg 2h 5m · Washington Dulles → Tampa
KLAX → KRNO
1
avg 1h 23m · Los Angeles → Reno Tahoe
KDEN → KBFL
1
avg 2h 35m · Denver → Meadows Field
KORD → KPWM
1
avg 1h 54m · Chicago O'Hare → Portland International Jetport
KIAH → KSAT
1
avg 37m · George Bush Intercontinental Houston → San Antonio
KIAD → KATL
1
avg 1h 38m · Washington Dulles → Hartsfield Jackson Atlanta
KORD → KMSN
1
avg 42m · Chicago O'Hare → Dane County Regional Truax Field
KORD → KMSP
1
avg 1h 15m · Chicago O'Hare → Minneapolis-St Paul International/Wold-Chamberlain

Aircraft types

Equipment used on this number

10
B738 BOEING Boeing 737-800
9
B739 BOEING Boeing 737-900
9
B39M BOEING Boeing 737 MAX 9
8
A320 AIRBUS Airbus A320
7
B752 BOEING Boeing 757-200
6
A21N AIRBUS Airbus A321 Neo
6
A319 AIRBUS Airbus A319
6
B38M BOEING Boeing 737 MAX 8
5
B753 BOEING Boeing 757-300
3
B789 BOEING Boeing 787-9 Dreamliner
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
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
N39461BOEING Boeing 737-900
→
8/7/2026
2h 5m
No alerts
Replay Analysis
N39461BOEING Boeing 737-900
→
8/6/2026
32m
No alerts
Replay Analysis
N27509BOEING Boeing 737 MAX 9
→
8/4/2026
45m
No alerts
Replay Analysis
N17429BOEING Boeing 737 MAX 9
→
8/3/2026
1h 23m
No alerts
Replay Analysis
N35260BOEING Boeing 737-800
→
7/31/2026
1h 19m
No alerts
Replay Analysis
N79279BOEING Boeing 737-800
→
7/30/2026
2h 24m
No alerts
Replay Analysis
N14563AIRBUS Airbus A321 Neo
→
7/25/2026
2h 4m
No alerts
Replay Analysis
N75429BOEING Boeing 737-900
→
7/24/2026
5h 4m
No alerts
Replay Analysis
N24542AIRBUS Airbus A321 Neo
→
7/23/2026
2h 7m
No alerts
Replay Analysis
N17435BOEING Boeing 737 MAX 9
→
7/22/2026
3h 16m
No alerts
Replay Analysis
N890UAAIRBUS Airbus A319
→
7/19/2026
54m
No alerts
Replay Analysis
N890UAAIRBUS Airbus A319
→
7/19/2026
3h 37m
No alerts
Replay Analysis
N17139BOEING Boeing 757-200
→
7/19/2026
5h 54m
No alerts
Replay Analysis
N16701BOEING Boeing 737-700
→
7/14/2026
2h 27m
No alerts
Replay Analysis
N61101BOEING Boeing 787-9 Dreamliner
→
7/12/2026
5h 15m
No alerts
Replay Analysis
N48127BOEING Boeing 757-200
→
7/10/2026
4h 29m
No alerts
Replay Analysis
N48127BOEING Boeing 757-200
→
7/9/2026
2h 8m
No alerts
Replay Analysis
N48127BOEING Boeing 757-200
→
7/9/2026
6h 38m
No alerts
Replay Analysis
N817UAAIRBUS Airbus A319
→
7/9/2026
2h 34m
No alerts
Replay Analysis
N807UAAIRBUS Airbus A319
→
7/7/2026
36m
No alerts
Replay Analysis
N44550AIRBUS Airbus A321 Neo
→
7/2/2026
3h 54m
No alerts
Replay Analysis
N439UAAIRBUS Airbus A320
→
6/29/2026
1h 49m
No alerts
Replay Analysis
N47524BOEING Boeing 737 MAX 9
→
6/27/2026
5h 48m
No alerts
Replay Analysis
N75425BOEING Boeing 737-900
→
6/24/2026
1h 39m
No alerts
Replay Analysis
N37516BOEING Boeing 737 MAX 9
→
6/24/2026
3h 16m
No alerts
Replay Analysis
N47298BOEING Boeing 737 MAX 8
→
6/23/2026
1h 18m
No alerts
Replay Analysis
N57870BOEING Boeing 757-300
→
6/22/2026
1h 33m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window