UAL638 is operated by UNITED AIRLINES INC between San Francisco International Airport (KSFO) and Daniel K Inouye International Airport (PHNL). The flight is most often flown by a BOEING Boeing 757-300. Typical block time is 5h 14m. SkyMeter has observed 83 legs of this flight number via ADS-B.

✈
FLIGHTS
83
last 90 days
⏱
AVG DURATION
5h 14m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 07/19/2026
first → last seen
🗺
ROUTES / TYPES
5 / 4
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
KSFO → PHNL
71
avg 5h 18m · San Francisco → Daniel K Inouye
KHAF → PHNL
6
avg 5h 19m · Half Moon Bay → Daniel K Inouye
KOAK → PHNL
3
avg 5h 19m · Metropolitan Oakland → Daniel K Inouye
US-0188 → PHNL
2
avg 5h 8m · Coast Guard Air Station San Francisco → Daniel K Inouye

Aircraft types

Equipment used on this number

4
B753 BOEING Boeing 757-300
58
B39M BOEING Boeing 737 MAX 9
23
B752 BOEING Boeing 757-200
1
B739 BOEING Boeing 737-900
1

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 UAL638

30
N75861BOEING Boeing 757-300
→
07/19/2026
5h 20m
No alerts
Replay Analysis
N57864BOEING Boeing 757-300
→
07/18/2026
5h 13m
No alerts
Replay Analysis
N77865BOEING Boeing 757-300
→
07/17/2026
5h 31m
No alerts
Replay Analysis
N75861BOEING Boeing 757-300
→
07/16/2026
5h 24m
No alerts
Replay Analysis
N57864BOEING Boeing 757-300
→
07/15/2026
5h 20m
No alerts
Replay Analysis
N75858BOEING Boeing 757-300
→
07/14/2026
5h 45m
No alerts
Replay Analysis
N75858BOEING Boeing 757-300
→
07/13/2026
5h 2m
No alerts
Replay Analysis
N57855BOEING Boeing 757-300
→
07/12/2026
5h 21m
No alerts
Replay Analysis
N57869BOEING Boeing 757-300
→
07/11/2026
4h 58m
No alerts
Replay Analysis
N77867BOEING Boeing 757-300
→
07/10/2026
5h 29m
No alerts
Replay Analysis
N75858BOEING Boeing 757-300
→
07/09/2026
5h 31m
No alerts
Replay Analysis
N57863BOEING Boeing 757-300
→
07/08/2026
5h 10m
No alerts
Replay Analysis
N57869BOEING Boeing 757-300
→
07/07/2026
5h 19m
No alerts
Replay Analysis
N57852BOEING Boeing 757-300
→
07/06/2026
5h 18m
No alerts
Replay Analysis
N57863BOEING Boeing 757-300
→
07/05/2026
5h 31m
No alerts
Replay Analysis
N57869BOEING Boeing 757-300
→
07/04/2026
5h 31m
No alerts
Replay Analysis
N78866BOEING Boeing 757-300
→
07/03/2026
5h 1m
No alerts
Replay Analysis
N57852BOEING Boeing 757-300
→
07/02/2026
5h 18m
No alerts
Replay Analysis
N77867BOEING Boeing 757-300
→
07/01/2026
5h 37m
No alerts
Replay Analysis
N73860BOEING Boeing 757-300
→
06/30/2026
5h 40m
No alerts
Replay Analysis
N77865BOEING Boeing 757-300
→
06/29/2026
5h 33m
No alerts
Replay Analysis
N77867BOEING Boeing 757-300
→
06/28/2026
5h 8m
No alerts
Replay Analysis
N57852BOEING Boeing 757-300
→
06/27/2026
5h 28m
No alerts
Replay Analysis
N57863BOEING Boeing 757-300
→
06/26/2026
5h 8m
No alerts
Replay Analysis
N75858BOEING Boeing 757-300
→
06/25/2026
5h 18m
No alerts
Replay Analysis
N57852BOEING Boeing 757-300
→
06/24/2026
5h 16m
No alerts
Replay Analysis
N78866BOEING Boeing 757-300
→
06/23/2026
5h 16m
No alerts
Replay Analysis
N57863BOEING Boeing 757-300
→
06/22/2026
5h 36m
No alerts
Replay Analysis
N56859BOEING Boeing 757-300
→
06/21/2026
5h 34m
No alerts
Replay Analysis
N57869BOEING Boeing 757-300
→
06/20/2026
5h 17m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window