UAL1664

UNITED AIRLINES INC · IAD → ORD

UAL1664 is operated by UNITED AIRLINES INC between Washington Dulles International Airport (KIAD) and Chicago O'Hare International Airport (KORD). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 7h 33m. SkyMeter has observed 23 legs of this flight number via ADS-B.

✈
FLIGHTS
23
last 90 days
⏱
AVG DURATION
7h 33m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
3 / 2
city pairs · airframes
⚠
INCIDENT RATE
8.7%
2 flagged

Routes flown

By count · last 90 days

1
KIAD → KORD
16
avg 10h 2m · Washington Dulles → Chicago O'Hare

Aircraft types

Equipment used on this number

2
B39M BOEING Boeing 737 MAX 9
21
B739 BOEING Boeing 737-900
2

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
1
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 23 operations of UAL1664

23
N17411BOEING Boeing 737 MAX 9
→
06/03/2026
2h 9m
No alerts
Replay Analysis
N17405BOEING Boeing 737 MAX 9
→
06/02/2026
9h 57m
No alerts
Replay Analysis
N77575BOEING Boeing 737 MAX 9
→
06/01/2026
10h 4m
No alerts
Replay Analysis
N17430BOEING Boeing 737 MAX 9
→
05/31/2026
10h 1m
△ Unstable
Replay Analysis
N17406BOEING Boeing 737 MAX 9
→
05/29/2026
10h 7m
No alerts
Replay Analysis
N37518BOEING Boeing 737 MAX 9
→
05/28/2026
9h 44m
No alerts
Replay Analysis
N17408BOEING Boeing 737 MAX 9
→
05/26/2026
10h 1m
No alerts
Replay Analysis
N77592BOEING Boeing 737 MAX 9
→
05/25/2026
9h 47m
No alerts
Replay Analysis
N47517BOEING Boeing 737 MAX 9
→
05/24/2026
9h 42m
No alerts
Replay Analysis
N27515BOEING Boeing 737 MAX 9
→
05/23/2026
10h 6m
No alerts
Replay Analysis
N17436BOEING Boeing 737 MAX 9
→
05/21/2026
5m
No alerts
Replay Analysis
N17436BOEING Boeing 737 MAX 9
→
05/21/2026
9h 53m
No alerts
Replay Analysis
N37563BOEING Boeing 737 MAX 9
→
05/20/2026
7m
No alerts
Replay Analysis
N37563BOEING Boeing 737 MAX 9
→
05/20/2026
10h 19m
No alerts
Replay Analysis
N17405BOEING Boeing 737 MAX 9
→
05/18/2026
3h 10m
No alerts
Replay Analysis
N37563BOEING Boeing 737 MAX 9
→
05/17/2026
2h 24m
No alerts
Replay Analysis
N37562BOEING Boeing 737 MAX 9
→
04/25/2026
10h 10m
No alerts
Replay Analysis
N17413BOEING Boeing 737 MAX 9
→
04/23/2026
9h 38m
No alerts
Replay Analysis
N67815BOEING Boeing 737-900
→
04/21/2026
3h 5m
No alerts
Replay Analysis
N68842BOEING Boeing 737-900
→
04/20/2026
10h 24m
No alerts
Replay Analysis
N37507BOEING Boeing 737 MAX 9
→
04/19/2026
10h 7m
No alerts
Replay Analysis
N37551BOEING Boeing 737 MAX 9
→
04/18/2026
10h 26m
↻ Go-around
Replay Analysis
N37518BOEING Boeing 737 MAX 9
→
04/17/2026
2h 5m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window