UAL939D is operated by UNITED AIRLINES INC. between London Heathrow Airport (EGLL) and San Francisco International Airport (KSFO). Typical block time is 11h 12m. SkyMeter has observed 1 legs of this flight number via ADS-B.

✈
FLIGHTS
1
last 90 days
⏱
AVG DURATION
11h 12m
tracked time
📅
SERVICE PERIOD
8/21/2026
first → last seen
🗺
ROUTES / TYPES
1 / 0
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

1
EGLL → KSFO
1
avg 11h 12m · London Heathrow → San Francisco

Aircraft types

Equipment used on this number

0

No aircraft type data.

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 1 operations of UAL939D

1
N71108
→
8/21/2026
11h 11m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window