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 737-900. Typical block time is 2h 23m. SkyMeter has observed 177 legs of this flight number via ADS-B.

✈
FLIGHTS
177
last 90 days
⏱
AVG DURATION
2h 23m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 07/19/2026
first → last seen
🗺
ROUTES / TYPES
12 / 8
city pairs · airframes
⚠
INCIDENT RATE
2.8%
5 flagged

Routes flown

By count · last 90 days

9
KLAS → KORD
79
avg 3h 30m · McCarran → Chicago O'Hare
KORD → KMCI
36
avg 1h 8m · Chicago O'Hare → Kansas City
KORD → KLGA
30
avg 1h 52m · Chicago O'Hare → La Guardia
KORD → KSRQ
6
avg 2h 29m · Chicago O'Hare → Sarasota Bradenton
KLAS → KMSN
1
avg 4h 8m · McCarran → Dane County Regional Truax Field
KORD → KMKC
1
avg 1h 8m · Chicago O'Hare → Charles B. Wheeler Downtown
KORD → KPHL
1
avg 2h 27m · Chicago O'Hare → Philadelphia
KPHL → KLGA
1
avg 32m · Philadelphia → La Guardia
KMSN → KORD
1
avg 45m · Dane County Regional Truax Field → Chicago O'Hare

Aircraft types

Equipment used on this number

8
B739 BOEING Boeing 737-900
65
B738 BOEING Boeing 737-800
62
A320 AIRBUS Airbus A320
24
A21N AIRBUS Airbus A321 Neo
23
A319 AIRBUS Airbus A319
14
B39M BOEING Boeing 737 MAX 9
10
B737 BOEING Boeing 737-700
4
B38M BOEING Boeing 737 MAX 8
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 UAL664

30
N487UAAIRBUS Airbus A320
→
07/19/2026
1h 8m
No alerts
Replay Analysis
N75429BOEING Boeing 737-900
→
07/19/2026
3h 35m
No alerts
Replay Analysis
N495UAAIRBUS Airbus A320
→
07/18/2026
1h 1m
No alerts
Replay Analysis
N66803BOEING Boeing 737-900
→
07/18/2026
3h 50m
No alerts
Replay Analysis
N67845BOEING Boeing 737-900
→
07/17/2026
45m
No alerts
Replay Analysis
N67845BOEING Boeing 737-900
→
07/17/2026
4h 8m
No alerts
Replay Analysis
N871UAAIRBUS Airbus A319
→
07/16/2026
1h 10m
No alerts
Replay Analysis
N39423BOEING Boeing 737-900
→
07/16/2026
3h 35m
No alerts
Replay Analysis
N449UAAIRBUS Airbus A320
→
07/15/2026
58m
No alerts
Replay Analysis
N75426BOEING Boeing 737-900
→
07/15/2026
3h 45m
No alerts
Replay Analysis
N492UAAIRBUS Airbus A320
→
07/14/2026
59m
No alerts
Replay Analysis
N36476BOEING Boeing 737-900
→
07/14/2026
3h 34m
No alerts
Replay Analysis
N431UAAIRBUS Airbus A320
→
07/13/2026
59m
No alerts
Replay Analysis
N63890BOEING Boeing 737-900
→
07/13/2026
3h 43m
No alerts
Replay Analysis
N449UAAIRBUS Airbus A320
→
07/12/2026
1h 4m
No alerts
Replay Analysis
N62849BOEING Boeing 737-900
→
07/12/2026
3h 36m
No alerts
Replay Analysis
N803UAAIRBUS Airbus A319
→
07/11/2026
1h 30m
No alerts
Replay Analysis
N73445BOEING Boeing 737-900
→
07/11/2026
3h 34m
No alerts
Replay Analysis
N453UAAIRBUS Airbus A320
→
07/10/2026
1h 20m
No alerts
Replay Analysis
N66803BOEING Boeing 737-900
→
07/10/2026
3h 19m
No alerts
Replay Analysis
N465UAAIRBUS Airbus A320
→
07/09/2026
59m
No alerts
Replay Analysis
N36476BOEING Boeing 737-900
→
07/09/2026
3h 42m
No alerts
Replay Analysis
N497UAAIRBUS Airbus A320
→
07/08/2026
1h 0m
No alerts
Replay Analysis
N66841BOEING Boeing 737-900
→
07/08/2026
3h 31m
No alerts
Replay Analysis
N829UAAIRBUS Airbus A319
→
07/07/2026
1h 0m
No alerts
Replay Analysis
N28478BOEING Boeing 737-900
→
07/07/2026
3h 36m
No alerts
Replay Analysis
N439UAAIRBUS Airbus A320
→
07/06/2026
1h 9m
No alerts
Replay Analysis
N68822BOEING Boeing 737-900
→
07/06/2026
3h 13m
No alerts
Replay Analysis
N437UAAIRBUS Airbus A320
→
07/05/2026
1h 19m
No alerts
Replay Analysis
N37555BOEING Boeing 737 MAX 9
→
07/05/2026
3h 24m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window