UAL1637

UNITED AIRLINES INC · PHX → DEN

UAL1637 is operated by UNITED AIRLINES INC between Phoenix Sky Harbor International Airport (KPHX) and Denver International Airport (KDEN). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 1h 48m. SkyMeter has observed 34 legs of this flight number via ADS-B.

✈
FLIGHTS
34
last 90 days
⏱
AVG DURATION
1h 48m
tracked time
📅
SERVICE PERIOD
04/10/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
7 / 4
city pairs · airframes
⚠
INCIDENT RATE
14.7%
5 flagged

Routes flown

By count · last 90 days

5
KPHX → KDEN
19
avg 1h 37m · Phoenix Sky Harbor → Denver
KMSP → KEWR
9
avg 2h 26m · Minneapolis-St Paul International/Wold-Chamberlain → Newark Liberty
7CA4 → KIAH
2
avg 2h 28m · Desert Regional Medical Center Heliport → George Bush Intercontinental Houston
KPHX → KDVT
1
avg 1h 40m · Phoenix Sky Harbor → Phoenix Deer Valley
US-0174 → KDEN
1
avg 11m · Aurora Airpark → Denver

Aircraft types

Equipment used on this number

4
B739 BOEING Boeing 737-900
13
A319 AIRBUS Airbus A319
10
B738 BOEING Boeing 737-800
10
B737 BOEING Boeing 737-700
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
5
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 UAL1637

30
N893UAAIRBUS Airbus A319
→
06/03/2026
2h 24m
No alerts
Replay Analysis
N4888UAIRBUS Airbus A319
→
06/02/2026
2h 29m
No alerts
Replay Analysis
N893UAAIRBUS Airbus A319
→
06/01/2026
2h 24m
No alerts
Replay Analysis
N890UAAIRBUS Airbus A319
→
05/31/2026
2h 32m
△ Unstable
Replay Analysis
N848UAAIRBUS Airbus A319
→
05/29/2026
28m
No alerts
Replay Analysis
N825UAAIRBUS Airbus A319
→
05/28/2026
2h 22m
No alerts
Replay Analysis
N811UAAIRBUS Airbus A319
→
05/27/2026
2h 22m
No alerts
Replay Analysis
N839UAAIRBUS Airbus A319
→
05/26/2026
2h 29m
No alerts
Replay Analysis
N833UAAIRBUS Airbus A319
→
05/25/2026
2h 17m
No alerts
Replay Analysis
N891UAAIRBUS Airbus A319
→
05/21/2026
2h 35m
No alerts
Replay Analysis
N14235BOEING Boeing 737-800
→
05/21/2026
1h 41m
No alerts
Replay Analysis
N27205BOEING Boeing 737-800
→
05/18/2026
1h 36m
No alerts
Replay Analysis
N77542BOEING Boeing 737-800
→
05/16/2026
1h 44m
No alerts
Replay Analysis
N73278BOEING Boeing 737-800
→
05/15/2026
1h 43m
No alerts
Replay Analysis
N33284BOEING Boeing 737-800
→
05/14/2026
1h 38m
△ Unstable
Replay Analysis
N62883BOEING Boeing 737-900
→
05/11/2026
1h 42m
No alerts
Replay Analysis
N27205BOEING Boeing 737-800
→
05/08/2026
1h 44m
No alerts
Replay Analysis
N76516BOEING Boeing 737-800
→
05/04/2026
1h 34m
No alerts
Replay Analysis
N24224BOEING Boeing 737-800
→
05/02/2026
1h 39m
No alerts
Replay Analysis
N78540BOEING Boeing 737-800
→
05/01/2026
1h 42m
△ Unstable
Replay Analysis
N53441BOEING Boeing 737-900
→
04/30/2026
1h 27m
No alerts
Replay Analysis
N78511BOEING Boeing 737-800
→
04/27/2026
2h 23m
No alerts
Replay Analysis
N68834BOEING Boeing 737-900
→
04/27/2026
1h 31m
No alerts
Replay Analysis
N68801BOEING Boeing 737-900
→
04/25/2026
1h 37m
No alerts
Replay Analysis
N78438BOEING Boeing 737-900
→
04/24/2026
11m
△ Unstable
Replay Analysis
N78438BOEING Boeing 737-900
→
04/24/2026
1h 30m
No alerts
Replay Analysis
N75426BOEING Boeing 737-900
→
04/23/2026
1h 36m
△ Unstable
Replay Analysis
N33714BOEING Boeing 737-700
→
04/20/2026
2h 33m
No alerts
Replay Analysis
N30401BOEING Boeing 737-900
→
04/20/2026
1h 46m
No alerts
Replay Analysis
N75432BOEING Boeing 737-900
→
04/18/2026
1h 22m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window