UAL1851

UNITED AIRLINES INC · DEN → SLC

UAL1851 is operated by UNITED AIRLINES INC between Denver International Airport (KDEN) and Salt Lake City International Airport (KSLC). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 1h 54m. SkyMeter has observed 16 legs of this flight number via ADS-B.

✈
FLIGHTS
16
last 90 days
⏱
AVG DURATION
1h 54m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
4 / 3
city pairs · airframes
⚠
INCIDENT RATE
25.0%
4 flagged

Routes flown

By count · last 90 days

3
KDEN → KSLC
11
avg 1h 26m · Denver → Salt Lake City
KORD → CYVR
3
avg 4h 5m · Chicago O'Hare → Vancouver
KSFO → KTUS
1
avg 2h 7m · San Francisco → Tucson International Airport / Morris Air National Guard Base

Aircraft types

Equipment used on this number

3
B739 BOEING Boeing 737-900
11
B738 BOEING Boeing 737-800
4
A319 AIRBUS Airbus A319
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
4
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 16 operations of UAL1851

16
N78509BOEING Boeing 737-800
→
06/03/2026
1h 32m
No alerts
Replay Analysis
N68805BOEING Boeing 737-900
→
06/02/2026
6m
No alerts
Replay Analysis
N68805BOEING Boeing 737-900
→
06/02/2026
1h 27m
△ Unstable
Replay Analysis
N69888BOEING Boeing 737-900
→
06/01/2026
1h 33m
△ Unstable
Replay Analysis
N62884BOEING Boeing 737-900
→
05/31/2026
1h 19m
No alerts
Replay Analysis
N69833BOEING Boeing 737-900
→
05/29/2026
1h 13m
No alerts
Replay Analysis
N62849BOEING Boeing 737-900
→
05/28/2026
1h 12m
No alerts
Replay Analysis
N81449BOEING Boeing 737-900
→
05/26/2026
1h 28m
No alerts
Replay Analysis
N39461BOEING Boeing 737-900
→
05/25/2026
1h 24m
△ Unstable
Replay Analysis
N69885BOEING Boeing 737-900
→
05/24/2026
1h 12m
No alerts
Replay Analysis
N69804BOEING Boeing 737-900
→
05/23/2026
1h 23m
No alerts
Replay Analysis
N69826BOEING Boeing 737-900
→
05/22/2026
2h 9m
△ Unstable
Replay Analysis
N829UAAIRBUS Airbus A319
→
05/21/2026
2h 7m
No alerts
Replay Analysis
N37274BOEING Boeing 737-800
→
04/19/2026
4h 14m
No alerts
Replay Analysis
N77520BOEING Boeing 737-800
→
04/18/2026
4h 2m
No alerts
Replay Analysis
N76516BOEING Boeing 737-800
→
04/17/2026
4h 0m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window