Flight Status & Tracker

UAL1721

UNITED AIRLINES INC · SFO → KOA · Last tracked Sep 27, 2026

UAL1721 is a flight number operated by UNITED AIRLINES INC between San Francisco International Airport (KSFO) and Ellison Onizuka Kona International Airport at Keahole (PHKO). SkyMeter last tracked UAL1721 on September 27, 2026. The flight is most often flown by a BOEING Boeing 757-300. Typical block time is 1h 55m. SkyMeter has observed 82 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
82
last 90 days
⏱
AVG DURATION
1h 55m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 9/27/2026
first → last seen
🗺
ROUTES / TYPES
4 / 2
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

1
KSFO → PHKO
1
avg 5h 15m · San Francisco → Ellison Onizuka Kona International Airport at Keahole

Aircraft types

Equipment used on this number

2
B753 BOEING Boeing 757-300
64
B39M BOEING Boeing 737 MAX 9
18

Safety profile

Flagged flights · last 90 days

Go-arounds
0
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 UAL1721

30
N17430BOEING Boeing 737 MAX 9
→
9/27/2026
1h 4m
No alerts
Replay Analysis
N37440BOEING Boeing 737 MAX 9
→
9/26/2026
59m
No alerts
Replay Analysis
N17589BOEING Boeing 737 MAX 9
→
9/25/2026
1h 4m
No alerts
Replay Analysis
N17408BOEING Boeing 737 MAX 9
→
9/24/2026
53m
No alerts
Replay Analysis
N17418BOEING Boeing 737 MAX 9
→
9/23/2026
1h 7m
No alerts
Replay Analysis
N17467BOEING Boeing 737 MAX 9
→
9/22/2026
4h 56m
No alerts
Replay Analysis
N27503BOEING Boeing 737 MAX 9
→
9/21/2026
1h 8m
No alerts
Replay Analysis
N37560BOEING Boeing 737 MAX 9
→
9/20/2026
59m
No alerts
Replay Analysis
N77598BOEING Boeing 737 MAX 9
→
9/19/2026
1h 3m
No alerts
Replay Analysis
N17550BOEING Boeing 737 MAX 9
→
9/17/2026
5h 17m
No alerts
Replay Analysis
N17454BOEING Boeing 737 MAX 9
→
9/16/2026
4h 53m
No alerts
Replay Analysis
N17454BOEING Boeing 737 MAX 9
→
9/15/2026
5h 14m
No alerts
Replay Analysis
N17454BOEING Boeing 737 MAX 9
→
9/14/2026
5h 15m
No alerts
Replay Analysis
N77572BOEING Boeing 737 MAX 9
→
9/13/2026
5h 18m
No alerts
Replay Analysis
N27520BOEING Boeing 737 MAX 9
→
9/12/2026
7h 30m
No alerts
Replay Analysis
N37540BOEING Boeing 737 MAX 9
→
9/11/2026
5h 17m
No alerts
Replay Analysis
N17418BOEING Boeing 737 MAX 9
→
9/9/2026
4h 43m
No alerts
Replay Analysis
N37553BOEING Boeing 737 MAX 9
→
9/8/2026
1h 17m
No alerts
Replay Analysis
N75853BOEING Boeing 757-300
→
9/6/2026
1h 4m
No alerts
Replay Analysis
N57852BOEING Boeing 757-300
→
9/4/2026
1h 14m
No alerts
Replay Analysis
N75853BOEING Boeing 757-300
→
9/3/2026
55m
No alerts
Replay Analysis
N78866BOEING Boeing 757-300
→
9/2/2026
4h 51m
No alerts
Replay Analysis
N57868BOEING Boeing 757-300
→
9/1/2026
1h 11m
No alerts
Replay Analysis
N57864BOEING Boeing 757-300
→
8/31/2026
1h 15m
No alerts
Replay Analysis
N73860BOEING Boeing 757-300
→
8/30/2026
1h 7m
No alerts
Replay Analysis
N77867BOEING Boeing 757-300
→
8/29/2026
58m
No alerts
Replay Analysis
N57857BOEING Boeing 757-300
→
8/28/2026
1h 22m
No alerts
Replay Analysis
N56859BOEING Boeing 757-300
→
8/27/2026
1h 5m
No alerts
Replay Analysis
N75861BOEING Boeing 757-300
→
8/25/2026
52m
No alerts
Replay Analysis
N75854BOEING Boeing 757-300
→
8/24/2026
1h 7m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window