Flight Status & Tracker

UAL1664

UNITED AIRLINES INC · IAD → ORD · Last tracked Oct 18, 2026

UAL1664 is a flight number operated by UNITED AIRLINES INC between Washington Dulles International Airport (KIAD) and Chicago O'Hare International Airport (KORD). SkyMeter last tracked UAL1664 on October 18, 2026. The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 4h 23m. SkyMeter has observed 50 legs of this flight number via ADS-B.

SkyMeter tracks historical flight activity from ADS-B data — this is not a live gate-to-gate status feed.

✈
FLIGHTS
50
last 90 days
⏱
AVG DURATION
4h 23m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 10/18/2026
first → last seen
🗺
ROUTES / TYPES
7 / 5
city pairs · airframes
⚠
INCIDENT RATE
2.0%
1 flagged

Routes flown

By count · last 90 days

4
KIAD → KORD
16
avg 9h 54m · Washington Dulles → Chicago O'Hare
KIAH → KDEN
14
avg 2h 6m · George Bush Intercontinental Houston → Denver
KPHX → KLAX
4
avg 1h 22m · Phoenix Sky Harbor → Los Angeles
KSAV → KIAD
3
avg 1h 21m · Savannah Hilton Head → Washington Dulles

Aircraft types

Equipment used on this number

5
B39M BOEING Boeing 737 MAX 9
28
A21N AIRBUS Airbus A321 Neo
14
B739 BOEING Boeing 737-900
4
A319 AIRBUS Airbus A319
3
A320 AIRBUS Airbus A320
1

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
0
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 UAL1664

30
N47412BOEING Boeing 737 MAX 9
→
10/18/2026
9h 36m
No alerts
Replay Analysis
N37536BOEING Boeing 737 MAX 9
→
10/10/2026
9h 35m
No alerts
Replay Analysis
N17413BOEING Boeing 737 MAX 9
→
10/4/2026
9h 28m
No alerts
Replay Analysis
N37449BOEING Boeing 737 MAX 9
→
10/3/2026
10h 9m
No alerts
Replay Analysis
N27503BOEING Boeing 737 MAX 9
→
9/27/2026
9h 31m
No alerts
Replay Analysis
N17448BOEING Boeing 737 MAX 9
→
9/26/2026
9h 53m
No alerts
Replay Analysis
N17430BOEING Boeing 737 MAX 9
→
9/23/2026
1h 29m
No alerts
Replay Analysis
N44501AIRBUS Airbus A321 Neo
→
9/21/2026
2h 11m
No alerts
Replay Analysis
N37413BOEING Boeing 737-900
→
9/20/2026
1h 26m
No alerts
Replay Analysis
N24519AIRBUS Airbus A321 Neo
→
9/18/2026
2h 2m
No alerts
Replay Analysis
N14565AIRBUS Airbus A321 Neo
→
9/17/2026
2h 8m
No alerts
Replay Analysis
N77582BOEING Boeing 737 MAX 9
→
9/16/2026
1h 17m
No alerts
Replay Analysis
N34535AIRBUS Airbus A321 Neo
→
9/14/2026
2h 3m
No alerts
Replay Analysis
N66848BOEING Boeing 737-900
→
9/13/2026
1h 15m
No alerts
Replay Analysis
N14564AIRBUS Airbus A321 Neo
→
9/4/2026
2h 7m
No alerts
Replay Analysis
N44501AIRBUS Airbus A321 Neo
→
8/31/2026
2h 6m
No alerts
Replay Analysis
N881UAAIRBUS Airbus A319
→
8/30/2026
1h 23m
No alerts
Replay Analysis
N24526AIRBUS Airbus A321 Neo
→
8/28/2026
2h 9m
No alerts
Replay Analysis
N54543AIRBUS Airbus A321 Neo
→
8/27/2026
2h 15m
No alerts
Replay Analysis
N477UAAIRBUS Airbus A320
→
8/24/2026
2h 5m
No alerts
Replay Analysis
N848UAAIRBUS Airbus A319
→
8/23/2026
1h 17m
No alerts
Replay Analysis
N14536AIRBUS Airbus A321 Neo
→
8/21/2026
2h 5m
No alerts
Replay Analysis
N14569AIRBUS Airbus A321 Neo
→
8/20/2026
2h 7m
No alerts
Replay Analysis
N14511AIRBUS Airbus A321 Neo
→
8/17/2026
47m
No alerts
Replay Analysis
N14511AIRBUS Airbus A321 Neo
→
8/17/2026
1h 57m
No alerts
Replay Analysis
N853UAAIRBUS Airbus A319
→
8/16/2026
1h 23m
No alerts
Replay Analysis
N54552AIRBUS Airbus A321 Neo
→
8/14/2026
2h 2m
No alerts
Replay Analysis
N14545AIRBUS Airbus A321 Neo
→
8/13/2026
2h 7m
No alerts
Replay Analysis
N77587BOEING Boeing 737 MAX 9
→
8/10/2026
10h 24m
↻ Go-around
Replay Analysis
N37563BOEING Boeing 737 MAX 9
→
8/9/2026
2h 57m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window