UAL1604

UNITED AIRLINES INC · SFO → DEN

UAL1604 is operated by UNITED AIRLINES INC between San Francisco International Airport (KSFO) and Denver International Airport (KDEN). The flight is most often flown by a AIRBUS Airbus A319. Typical block time is 2h 40m. SkyMeter has observed 134 legs of this flight number via ADS-B.

✈
FLIGHTS
134
last 90 days
⏱
AVG DURATION
2h 40m
tracked time
📅
SERVICE PERIOD
04/12/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
19 / 9
city pairs · airframes
⚠
INCIDENT RATE
7.5%
10 flagged

Routes flown

By count · last 90 days

10
KSFO → KDEN
38
avg 2h 39m · San Francisco → Denver
KRDU → KSFO
26
avg 5h 32m · Raleigh Durham → San Francisco
KDEN → KRNO
21
avg 2h 19m · Denver → Reno Tahoe
KSNA → KSFO
8
avg 1h 26m · John Wayne Airport-Orange County → San Francisco
NV19 → KRNO
2
avg 6m · Nevada Dept of Wildlife State Headquarters Heliport → Reno Tahoe
US-0404 → KSFO
1
avg 57m · Centerport Heliport → San Francisco
NV28 → KRNO
1
avg 6m · Rlb Heliport → Reno Tahoe
NV17 → KRNO
1
avg 9m · Youngberg Ranch → Reno Tahoe
3NV3 → KRNO
1
avg 9m · Remlinger Ranch Heliport → Reno Tahoe
KCOS → KDEN
1
avg 1h 2m · City of Colorado Springs → Denver

Aircraft types

Equipment used on this number

9
A319 AIRBUS Airbus A319
53
B738 BOEING Boeing 737-800
34
B38M BOEING Boeing 737 MAX 8
25
A21N AIRBUS Airbus A321 Neo
16
B772 BOEING Boeing 777-200
16
A320 AIRBUS Airbus A320
11
B753 BOEING Boeing 757-300
10
B39M BOEING Boeing 737 MAX 9
2
B739 BOEING Boeing 737-900
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
10
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 UAL1604

30
N843UAAIRBUS Airbus A319
→
06/03/2026
1h 48m
No alerts
Replay Analysis
N57855BOEING Boeing 757-300
→
06/03/2026
3h 2m
No alerts
Replay Analysis
N87531BOEING Boeing 737-800
→
06/03/2026
1h 10m
No alerts
Replay Analysis
N884UAAIRBUS Airbus A319
→
06/02/2026
1h 51m
No alerts
Replay Analysis
N57852BOEING Boeing 757-300
→
06/02/2026
2h 43m
△ Unstable
Replay Analysis
N14242BOEING Boeing 737-800
→
06/02/2026
29m
No alerts
Replay Analysis
N478UAAIRBUS Airbus A320
→
06/02/2026
2h 32m
No alerts
Replay Analysis
N57852BOEING Boeing 757-300
→
06/01/2026
3h 19m
No alerts
Replay Analysis
N77537BOEING Boeing 737-800
→
06/01/2026
1h 30m
No alerts
Replay Analysis
N443UAAIRBUS Airbus A320
→
06/01/2026
25m
No alerts
Replay Analysis
N443UAAIRBUS Airbus A320
→
05/31/2026
1h 51m
No alerts
Replay Analysis
N443UAAIRBUS Airbus A320
→
05/31/2026
2h 21m
No alerts
Replay Analysis
N75851BOEING Boeing 757-300
→
05/31/2026
2h 32m
No alerts
Replay Analysis
N77539BOEING Boeing 737-800
→
05/31/2026
1h 45m
No alerts
Replay Analysis
N884UAAIRBUS Airbus A319
→
05/31/2026
25m
No alerts
Replay Analysis
N57855BOEING Boeing 757-300
→
05/29/2026
2h 35m
No alerts
Replay Analysis
N27239BOEING Boeing 737-800
→
05/29/2026
52m
No alerts
Replay Analysis
N811UAAIRBUS Airbus A319
→
05/29/2026
1h 4m
△ Unstable
Replay Analysis
N811UAAIRBUS Airbus A319
→
05/28/2026
1h 1m
No alerts
Replay Analysis
N811UAAIRBUS Airbus A319
→
05/28/2026
2h 6m
△ Unstable
Replay Analysis
N57863BOEING Boeing 757-300
→
05/28/2026
2h 37m
No alerts
Replay Analysis
N17327BOEING Boeing 737 MAX 8
→
05/28/2026
1h 39m
No alerts
Replay Analysis
N464UAAIRBUS Airbus A320
→
05/28/2026
25m
No alerts
Replay Analysis
N75851BOEING Boeing 757-300
→
05/26/2026
2h 49m
No alerts
Replay Analysis
N87527BOEING Boeing 737-800
→
05/26/2026
1h 16m
No alerts
Replay Analysis
N821UAAIRBUS Airbus A319
→
05/26/2026
2h 4m
No alerts
Replay Analysis
N821UAAIRBUS Airbus A319
→
05/25/2026
10m
No alerts
Replay Analysis
N75853BOEING Boeing 757-300
→
05/25/2026
2h 33m
No alerts
Replay Analysis
N79279BOEING Boeing 737-800
→
05/25/2026
1h 22m
No alerts
Replay Analysis
N829UAAIRBUS Airbus A319
→
05/25/2026
35m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window