UAL939 is operated by UNITED AIRLINES INC between London Heathrow Airport (EGLL) and San Francisco International Airport (KSFO). The flight is most often flown by a BOEING Boeing 787-9 Dreamliner. Typical block time is 9h 7m. SkyMeter has observed 93 legs of this flight number via ADS-B.

✈
FLIGHTS
93
last 90 days
⏱
AVG DURATION
9h 7m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 9/9/2026
first → last seen
🗺
ROUTES / TYPES
6 / 1
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
EGLL → KSFO
68
avg 10h 48m · London Heathrow → San Francisco
EGLL → EGLM
2
avg 8h 34m · London Heathrow → White Waltham Airfield
EGLL → EGTR
1
avg 8h 28m · London Heathrow → Elstree Airfield
US-0188 → KSFO
1
avg 2h 13m · Coast Guard Air Station San Francisco → San Francisco

Aircraft types

Equipment used on this number

1
B789 BOEING Boeing 787-9 Dreamliner
214

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 UAL939

30
N61101BOEING Boeing 787-9 Dreamliner
→
9/9/2026
3h 4m
No alerts
Replay Analysis
N61101BOEING Boeing 787-9 Dreamliner
→
9/8/2026
3h 2m
No alerts
Replay Analysis
N51104BOEING Boeing 787-9 Dreamliner
→
9/8/2026
2h 41m
No alerts
Replay Analysis
N61106BOEING Boeing 787-9 Dreamliner
→
9/6/2026
2h 16m
No alerts
Replay Analysis
N61106BOEING Boeing 787-9 Dreamliner
→
9/5/2026
8h 51m
No alerts
Replay Analysis
N61106BOEING Boeing 787-9 Dreamliner
→
9/5/2026
11h 8m
No alerts
Replay Analysis
N21102BOEING Boeing 787-9 Dreamliner
→
9/5/2026
2h 46m
No alerts
Replay Analysis
N21102BOEING Boeing 787-9 Dreamliner
→
9/4/2026
8h 30m
No alerts
Replay Analysis
N21102BOEING Boeing 787-9 Dreamliner
→
9/4/2026
11h 16m
No alerts
Replay Analysis
N71108
→
9/4/2026
2h 12m
No alerts
Replay Analysis
N61101BOEING Boeing 787-9 Dreamliner
→
9/3/2026
2h 23m
No alerts
Replay Analysis
N61101BOEING Boeing 787-9 Dreamliner
→
9/2/2026
8h 41m
No alerts
Replay Analysis
N61101BOEING Boeing 787-9 Dreamliner
→
9/2/2026
11h 5m
No alerts
Replay Analysis
N81110
→
9/2/2026
2h 25m
No alerts
Replay Analysis
N81110
→
9/1/2026
8h 39m
No alerts
Replay Analysis
N81110
→
9/1/2026
11h 5m
No alerts
Replay Analysis
N81107
→
9/1/2026
2h 22m
No alerts
Replay Analysis
N81107
→
8/31/2026
8h 11m
No alerts
Replay Analysis
N81107
→
8/31/2026
10h 41m
No alerts
Replay Analysis
N61103BOEING Boeing 787-9 Dreamliner
→
8/31/2026
2h 17m
No alerts
Replay Analysis
N61103BOEING Boeing 787-9 Dreamliner
→
8/30/2026
11h 1m
No alerts
Replay Analysis
N61103BOEING Boeing 787-9 Dreamliner
→
8/30/2026
8h 43m
No alerts
Replay Analysis
N51104BOEING Boeing 787-9 Dreamliner
→
8/30/2026
2h 8m
No alerts
Replay Analysis
N51104BOEING Boeing 787-9 Dreamliner
→
8/29/2026
11h 2m
No alerts
Replay Analysis
N51104BOEING Boeing 787-9 Dreamliner
→
8/29/2026
8h 53m
No alerts
Replay Analysis
N81105BOEING Boeing 787-9 Dreamliner
→
8/29/2026
3h 1m
No alerts
Replay Analysis
N81105BOEING Boeing 787-9 Dreamliner
→
8/28/2026
11h 1m
No alerts
Replay Analysis
N81105BOEING Boeing 787-9 Dreamliner
→
8/28/2026
7h 59m
No alerts
Replay Analysis
N21102BOEING Boeing 787-9 Dreamliner
→
8/28/2026
2h 18m
No alerts
Replay Analysis
N21102BOEING Boeing 787-9 Dreamliner
→
8/27/2026
10h 48m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window