UAL581 is operated by UNITED AIRLINES INC between Chicago O'Hare International Airport (KORD) and Denver International Airport (KDEN). The flight is most often flown by a AIRBUS Airbus A321 Neo. Typical block time is 1h 39m. SkyMeter has observed 138 legs of this flight number via ADS-B.

✈
FLIGHTS
138
last 90 days
⏱
AVG DURATION
1h 39m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/11/2026
first → last seen
🗺
ROUTES / TYPES
13 / 7
city pairs · airframes
⚠
INCIDENT RATE
1.4%
2 flagged

Routes flown

By count · last 90 days

6
KORD → KDEN
38
avg 2h 18m · Chicago O'Hare → Denver
KBWI → KORD
32
avg 1h 53m · Baltimore/Washington International Thurgood Marshall → Chicago O'Hare
KORD → KDSM
29
avg 58m · Chicago O'Hare → Des Moines
KSEA → KSFO
5
avg 2h 5m · Seattle Tacoma → San Francisco
KSFO → KPSP
4
avg 1h 31m · San Francisco → Palm Springs
KSFO → KABQ
1
avg 2h 23m · San Francisco → Albuquerque International Sunport

Aircraft types

Equipment used on this number

7
A21N AIRBUS Airbus A321 Neo
53
A319 AIRBUS Airbus A319
37
B739 BOEING Boeing 737-900
26
B39M BOEING Boeing 737 MAX 9
13
A320 AIRBUS Airbus A320
8
B737 BOEING Boeing 737-700
1
ST75 ST75
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
2
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 UAL581

30
N844UAAIRBUS Airbus A319
→
8/11/2026
3h 29m
No alerts
Replay Analysis
N14527AIRBUS Airbus A321 Neo
→
8/10/2026
2h 14m
No alerts
Replay Analysis
N34551AIRBUS Airbus A321 Neo
→
8/9/2026
30m
No alerts
Replay Analysis
N14502AIRBUS Airbus A321 Neo
→
8/8/2026
2h 11m
No alerts
Replay Analysis
N14548AIRBUS Airbus A321 Neo
→
8/7/2026
2h 18m
No alerts
Replay Analysis
N14546
→
8/6/2026
2h 32m
No alerts
Replay Analysis
N14520AIRBUS Airbus A321 Neo
→
8/5/2026
2h 29m
No alerts
Replay Analysis
N34535AIRBUS Airbus A321 Neo
→
8/4/2026
2h 23m
No alerts
Replay Analysis
N54558AIRBUS Airbus A321 Neo
→
8/3/2026
2h 15m
No alerts
Replay Analysis
N54558AIRBUS Airbus A321 Neo
→
8/3/2026
10m
No alerts
Replay Analysis
N54561ST75
→
8/2/2026
2h 20m
No alerts
Replay Analysis
N14527AIRBUS Airbus A321 Neo
→
7/31/2026
2h 54m
No alerts
Replay Analysis
N14520AIRBUS Airbus A321 Neo
→
7/30/2026
2h 31m
No alerts
Replay Analysis
N24526AIRBUS Airbus A321 Neo
→
7/29/2026
2h 19m
No alerts
Replay Analysis
N14554AIRBUS Airbus A321 Neo
→
7/28/2026
2h 19m
No alerts
Replay Analysis
N54543AIRBUS Airbus A321 Neo
→
7/27/2026
10m
No alerts
Replay Analysis
N54543AIRBUS Airbus A321 Neo
→
7/27/2026
2h 41m
No alerts
Replay Analysis
N54543AIRBUS Airbus A321 Neo
→
7/27/2026
44m
No alerts
Replay Analysis
N54543AIRBUS Airbus A321 Neo
→
7/27/2026
1h 49m
No alerts
Replay Analysis
N14565AIRBUS Airbus A321 Neo
→
7/26/2026
2h 11m
No alerts
Replay Analysis
N14566AIRBUS Airbus A321 Neo
→
7/25/2026
2h 11m
No alerts
Replay Analysis
N34547AIRBUS Airbus A321 Neo
→
7/24/2026
2h 8m
No alerts
Replay Analysis
N44550AIRBUS Airbus A321 Neo
→
7/23/2026
2h 11m
No alerts
Replay Analysis
N44550AIRBUS Airbus A321 Neo
→
7/23/2026
11m
No alerts
Replay Analysis
N14553AIRBUS Airbus A321 Neo
→
7/22/2026
2h 20m
No alerts
Replay Analysis
N14553AIRBUS Airbus A321 Neo
→
7/22/2026
9m
No alerts
Replay Analysis
N14548AIRBUS Airbus A321 Neo
→
7/21/2026
2h 15m
No alerts
Replay Analysis
N14548AIRBUS Airbus A321 Neo
→
7/21/2026
9m
No alerts
Replay Analysis
N24526AIRBUS Airbus A321 Neo
→
7/20/2026
2h 21m
No alerts
Replay Analysis
N14527AIRBUS Airbus A321 Neo
→
7/19/2026
2h 22m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window