UAL3900

UNITED AIRLINES INC · SFO LAX

UAL3900 is operated by UNITED AIRLINES INC between San Francisco International Airport (KSFO) and Los Angeles International Airport (KLAX). The flight is most often flown by a BOEING Boeing 787-8 BBJ/Dreamliner. Typical block time is 4h 36m. SkyMeter has observed 6 legs of this flight number via ADS-B.

FLIGHTS
6
last 90 days
AVG DURATION
4h 36m
tracked time
📅
SERVICE PERIOD
04/28/2026 → 06/01/2026
first → last seen
🗺
ROUTES / TYPES
6 / 5
city pairs · airframes
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
1
avg 1h 37m · San Francisco → Los Angeles
1
avg 9h 11m · Daniel K Inouye → Newark Liberty
1
avg 3h 37m · San Diego → Chicago O'Hare
1
avg 2h 11m · Denver → Chicago O'Hare

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 UAL3900

11
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window