UAL2173

UNITED AIRLINES INC · BOI → DEN

UAL2173 is operated by UNITED AIRLINES INC between Boise Air Terminal/Gowen Field (KBOI) and Denver International Airport (KDEN). The flight is most often flown by a AIRBUS Airbus A319. Typical block time is 1h 7m. SkyMeter has observed 62 legs of this flight number via ADS-B.

✈
FLIGHTS
62
last 90 days
⏱
AVG DURATION
1h 7m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
6 / 6
city pairs · airframes
⚠
INCIDENT RATE
22.6%
14 flagged

Routes flown

By count · last 90 days

3
KBOI → KDEN
29
avg 1h 36m · Boise Air Terminal/Gowen Field → Denver
KDEN → KHDN
14
avg 42m · Denver → Yampa Valley
KDEN → KSBS
5
avg 40m · Denver → Steamboat Springs Bob Adams Field

Aircraft types

Equipment used on this number

6
A319 AIRBUS Airbus A319
22
B739 BOEING Boeing 737-900
13
B39M BOEING Boeing 737 MAX 9
8
A320 AIRBUS Airbus A320
7
B738 BOEING Boeing 737-800
7
B38M BOEING Boeing 737 MAX 8
5

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
14
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 UAL2173

30
N17421BOEING Boeing 737 MAX 9
→
06/03/2026
1h 42m
No alerts
Replay Analysis
N853UAAIRBUS Airbus A319
→
06/03/2026
44m
No alerts
Replay Analysis
N73291BOEING Boeing 737-800
→
06/02/2026
1h 39m
No alerts
Replay Analysis
N884UAAIRBUS Airbus A319
→
06/02/2026
31m
No alerts
Replay Analysis
N884UAAIRBUS Airbus A319
→
06/02/2026
11m
No alerts
Replay Analysis
N77581BOEING Boeing 737 MAX 9
→
06/01/2026
1h 41m
No alerts
Replay Analysis
N483UAAIRBUS Airbus A320
→
06/01/2026
43m
No alerts
Replay Analysis
N17423BOEING Boeing 737 MAX 9
→
05/31/2026
1h 37m
No alerts
Replay Analysis
N445UAAIRBUS Airbus A320
→
05/31/2026
31m
No alerts
Replay Analysis
N68801BOEING Boeing 737-900
→
05/29/2026
1h 5m
No alerts
Replay Analysis
N825UAAIRBUS Airbus A319
→
05/29/2026
53m
No alerts
Replay Analysis
N37545BOEING Boeing 737 MAX 9
→
05/28/2026
1h 30m
No alerts
Replay Analysis
N480UAAIRBUS Airbus A320
→
05/28/2026
40m
No alerts
Replay Analysis
N37560BOEING Boeing 737 MAX 9
→
05/27/2026
1h 43m
No alerts
Replay Analysis
N829UAAIRBUS Airbus A319
→
05/26/2026
40m
No alerts
Replay Analysis
N77584BOEING Boeing 737 MAX 9
→
05/25/2026
1h 35m
No alerts
Replay Analysis
N77584BOEING Boeing 737 MAX 9
→
05/25/2026
12m
No alerts
Replay Analysis
N77575BOEING Boeing 737 MAX 9
→
05/25/2026
1h 38m
No alerts
Replay Analysis
N4901UAIRBUS Airbus A320
→
05/24/2026
42m
No alerts
Replay Analysis
N77525BOEING Boeing 737-800
→
05/23/2026
1h 31m
△ Unstable
Replay Analysis
N491UAAIRBUS Airbus A320
→
05/23/2026
52m
No alerts
Replay Analysis
N877UAAIRBUS Airbus A319
→
05/22/2026
55m
No alerts
Replay Analysis
N87527BOEING Boeing 737-800
→
05/22/2026
16m
No alerts
Replay Analysis
N87527BOEING Boeing 737-800
→
05/21/2026
1h 41m
No alerts
Replay Analysis
N801UAAIRBUS Airbus A319
→
05/21/2026
35m
No alerts
Replay Analysis
N87527BOEING Boeing 737-800
→
05/20/2026
1h 48m
No alerts
Replay Analysis
N68891BOEING Boeing 737-900
→
05/18/2026
1h 40m
No alerts
Replay Analysis
N832UAAIRBUS Airbus A319
→
05/18/2026
38m
No alerts
Replay Analysis
N37465BOEING Boeing 737-900
→
05/17/2026
1h 40m
△ Unstable
Replay Analysis
N806UAAIRBUS Airbus A319
→
05/17/2026
46m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window