UAL664 is operated by UNITED AIRLINES INC between McCarran International Airport (KLAS) and Chicago O'Hare International Airport (KORD). The flight is most often flown by a BOEING Boeing 737-800. Typical block time is 2h 17m. SkyMeter has observed 84 legs of this flight number via ADS-B.

✈
FLIGHTS
84
last 90 days
⏱
AVG DURATION
2h 17m
tracked time
📅
SERVICE PERIOD
04/13/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
8 / 8
city pairs · airframes
⚠
INCIDENT RATE
4.8%
4 flagged

Routes flown

By count · last 90 days

4
KLAS → KORD
34
avg 3h 27m · McCarran → Chicago O'Hare
KORD → KMCI
14
avg 1h 10m · Chicago O'Hare → Kansas City
KORD → KSRQ
12
avg 2h 29m · Chicago O'Hare → Sarasota Bradenton
KORD → KLGA
10
avg 1h 50m · Chicago O'Hare → La Guardia

Aircraft types

Equipment used on this number

8
B738 BOEING Boeing 737-800
39
A21N AIRBUS Airbus A321 Neo
24
B739 BOEING Boeing 737-900
14
B39M BOEING Boeing 737 MAX 9
14
A319 AIRBUS Airbus A319
9
B737 BOEING Boeing 737-700
4
A320 AIRBUS Airbus A320
2
B38M BOEING Boeing 737 MAX 8
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
4
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 UAL664

30
N73251BOEING Boeing 737-800
→
06/03/2026
2h 9m
No alerts
Replay Analysis
N69838BOEING Boeing 737-900
→
06/03/2026
3h 56m
No alerts
Replay Analysis
N14228BOEING Boeing 737-800
→
06/02/2026
1h 48m
No alerts
Replay Analysis
N39475BOEING Boeing 737-900
→
06/02/2026
3h 26m
No alerts
Replay Analysis
N14250BOEING Boeing 737-800
→
06/01/2026
1h 55m
No alerts
Replay Analysis
N67845BOEING Boeing 737-900
→
06/01/2026
3h 25m
No alerts
Replay Analysis
N78511BOEING Boeing 737-800
→
05/31/2026
1h 54m
△ Unstable
Replay Analysis
N39415BOEING Boeing 737-900
→
05/31/2026
3h 8m
No alerts
Replay Analysis
N37298BOEING Boeing 737-800
→
05/29/2026
1h 38m
No alerts
Replay Analysis
N77579BOEING Boeing 737 MAX 9
→
05/29/2026
3h 33m
No alerts
Replay Analysis
N14230BOEING Boeing 737-800
→
05/28/2026
1h 38m
△ Unstable
Replay Analysis
N37420BOEING Boeing 737-900
→
05/28/2026
3h 21m
No alerts
Replay Analysis
N14228BOEING Boeing 737-800
→
05/26/2026
1h 42m
No alerts
Replay Analysis
N37437BOEING Boeing 737-900
→
05/26/2026
3h 29m
No alerts
Replay Analysis
N67846BOEING Boeing 737-900
→
05/26/2026
1h 49m
No alerts
Replay Analysis
N67846BOEING Boeing 737-900
→
05/25/2026
1h 55m
No alerts
Replay Analysis
N67846BOEING Boeing 737-900
→
05/25/2026
3h 44m
No alerts
Replay Analysis
N76503BOEING Boeing 737-800
→
05/25/2026
42m
No alerts
Replay Analysis
N76503BOEING Boeing 737-800
→
05/24/2026
1h 59m
No alerts
Replay Analysis
N76503BOEING Boeing 737-800
→
05/24/2026
1h 16m
No alerts
Replay Analysis
N66893BOEING Boeing 737-900
→
05/24/2026
10m
No alerts
Replay Analysis
N66893BOEING Boeing 737-900
→
05/24/2026
3h 28m
No alerts
Replay Analysis
N438UAAIRBUS Airbus A320
→
05/23/2026
1h 46m
No alerts
Replay Analysis
N37456BOEING Boeing 737-900
→
05/23/2026
3h 25m
No alerts
Replay Analysis
N76265BOEING Boeing 737-800
→
05/22/2026
43m
No alerts
Replay Analysis
N77542BOEING Boeing 737-800
→
05/22/2026
11m
△ Unstable
Replay Analysis
N77542BOEING Boeing 737-800
→
05/21/2026
1h 53m
△ Unstable
Replay Analysis
N77542BOEING Boeing 737-800
→
05/21/2026
1h 41m
No alerts
Replay Analysis
N39450BOEING Boeing 737-900
→
05/21/2026
3h 40m
No alerts
Replay Analysis
N21723BOEING Boeing 737-700
→
05/20/2026
1h 19m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window