UAL1840

UNITED AIRLINES INC · DEN → SLC

UAL1840 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 MAX 8. Typical block time is 1h 15m. SkyMeter has observed 103 legs of this flight number via ADS-B.

✈
FLIGHTS
103
last 90 days
⏱
AVG DURATION
1h 15m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 07/19/2026
first → last seen
🗺
ROUTES / TYPES
6 / 7
city pairs · airframes
⚠
INCIDENT RATE
1.9%
2 flagged

Routes flown

By count · last 90 days

4
KDEN → KSLC
74
avg 1h 24m · Denver → Salt Lake City
KSLC → KORD
3
avg 2h 51m · Salt Lake City → Chicago O'Hare
KDEN → KGJT
1
avg 3h 0m · Denver → Grand Junction
KGJT → KSLC
1
avg 41m · Grand Junction → Salt Lake City

Aircraft types

Equipment used on this number

7
B38M BOEING Boeing 737 MAX 8
55
A319 AIRBUS Airbus A319
26
A320 AIRBUS Airbus A320
10
B738 BOEING Boeing 737-800
8
A21N AIRBUS Airbus A321 Neo
5
B739 BOEING Boeing 737-900
3
B737 BOEING Boeing 737-700
1

Safety profile

Flagged flights · last 90 days

Go-arounds
2
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 UAL1840

30
N27256BOEING Boeing 737 MAX 8
→
07/19/2026
1h 32m
No alerts
Replay Analysis
N890UAAIRBUS Airbus A319
→
07/18/2026
6m
No alerts
Replay Analysis
N890UAAIRBUS Airbus A319
→
07/18/2026
1h 22m
No alerts
Replay Analysis
N17373BOEING Boeing 737 MAX 8
→
07/17/2026
6m
No alerts
Replay Analysis
N17373BOEING Boeing 737 MAX 8
→
07/17/2026
1h 23m
No alerts
Replay Analysis
N17346BOEING Boeing 737 MAX 8
→
07/16/2026
1h 19m
No alerts
Replay Analysis
N17341BOEING Boeing 737 MAX 8
→
07/15/2026
1h 16m
No alerts
Replay Analysis
N17328BOEING Boeing 737 MAX 8
→
07/14/2026
1h 21m
No alerts
Replay Analysis
N27270BOEING Boeing 737 MAX 8
→
07/13/2026
1h 5m
No alerts
Replay Analysis
N27270BOEING Boeing 737 MAX 8
→
07/13/2026
12m
No alerts
Replay Analysis
N17265BOEING Boeing 737 MAX 8
→
07/12/2026
1h 8m
No alerts
Replay Analysis
N44550AIRBUS Airbus A321 Neo
→
07/11/2026
8m
No alerts
Replay Analysis
N44550AIRBUS Airbus A321 Neo
→
07/11/2026
1h 14m
No alerts
Replay Analysis
N27269BOEING Boeing 737 MAX 8
→
07/10/2026
9m
No alerts
Replay Analysis
N27269BOEING Boeing 737 MAX 8
→
07/10/2026
1h 8m
No alerts
Replay Analysis
N17317BOEING Boeing 737 MAX 8
→
07/09/2026
1h 54m
No alerts
Replay Analysis
N47369BOEING Boeing 737 MAX 8
→
07/08/2026
1h 11m
No alerts
Replay Analysis
N37365BOEING Boeing 737 MAX 8
→
07/07/2026
1h 38m
No alerts
Replay Analysis
N27366BOEING Boeing 737 MAX 8
→
07/06/2026
1h 41m
↻ Go-around
Replay Analysis
N17329BOEING Boeing 737 MAX 8
→
07/05/2026
1h 24m
No alerts
Replay Analysis
N66841BOEING Boeing 737-900
→
07/03/2026
1h 15m
No alerts
Replay Analysis
N47332BOEING Boeing 737 MAX 8
→
07/02/2026
1h 23m
No alerts
Replay Analysis
N47291BOEING Boeing 737 MAX 8
→
07/01/2026
1h 20m
No alerts
Replay Analysis
N37257BOEING Boeing 737 MAX 8
→
06/30/2026
1h 30m
No alerts
Replay Analysis
N17373BOEING Boeing 737 MAX 8
→
06/29/2026
1h 23m
No alerts
Replay Analysis
N47357BOEING Boeing 737 MAX 8
→
06/28/2026
6m
No alerts
Replay Analysis
N47357BOEING Boeing 737 MAX 8
→
06/28/2026
1h 28m
No alerts
Replay Analysis
N461UAAIRBUS Airbus A320
→
06/27/2026
1h 28m
No alerts
Replay Analysis
N47288BOEING Boeing 737 MAX 8
→
06/26/2026
1h 27m
No alerts
Replay Analysis
N37368BOEING Boeing 737 MAX 8
→
06/25/2026
1h 29m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window