UAL
UAL3820 is a flight number operated by UNITED AIRLINES INC between Boeing Field King County International Airport (KBFI) and Chicago O'Hare International Airport (KORD). SkyMeter last tracked UAL3820 on September 10, 2026. The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 2h 15m. SkyMeter has observed 6 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
6
last 90 days
⏱
AVG DURATION
2h 15m
tracked time
📅
SERVICE PERIOD
4/9/2026 → 9/10/2026
first → last seen
🗺
ROUTES / TYPES
5 / 1
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged
Routes flown
By count · last 90 days
Aircraft types
Equipment used on this number
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 11 operations of UAL3820
9/10/2026
19m
No alerts
9/10/2026
3h 54m
No alerts
8/6/2026
1h 51m
No alerts
8/6/2026
2h 16m
No alerts
8/5/2026
12m
No alerts
8/5/2026
3h 4m
No alerts
7/9/2026
3h 47m
No alerts
6/4/2026
3h 31m
No alerts
5/16/2026
3h 31m
No alerts
4/9/2026
3h 38m
No alerts
© SkyMeter ·
All flight data subject to ODbL attribution
·
Tracked: 90-day window