UAL2661 is operated by WILMINGTON TRUST CO TRUSTEE between San Francisco International Airport (KSFO) and Ontario International Airport (KONT). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 3h 37m. SkyMeter has observed 81 legs of this flight number via ADS-B.

✈
FLIGHTS
81
last 90 days
⏱
AVG DURATION
3h 37m
tracked time
📅
SERVICE PERIOD
04/07/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
9 / 6
city pairs · airframes
⚠
INCIDENT RATE
2.5%
2 flagged

Routes flown

By count · last 90 days

5
KSFO → KONT
36
avg 1h 27m · San Francisco → Ontario
KPHL → KSFO
25
avg 5h 51m · Philadelphia → San Francisco
04PA → KSFO
10
avg 5h 53m · S & C Distribution Center Heliport → San Francisco
9N2 → KSFO
3
avg 5h 57m · Philadelphia Seaplane Base → San Francisco
KSFO → KBOS
2
avg 5h 30m · San Francisco → General Edward Lawrence Logan

Aircraft types

Equipment used on this number

6
B39M BOEING Boeing 737 MAX 9
33
B38M BOEING Boeing 737 MAX 8
28
B739 BOEING Boeing 737-900
10
B738 BOEING Boeing 737-800
7
A320 AIRBUS Airbus A320
6
A319 AIRBUS Airbus A319
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
2
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 UAL2661

30
N37537BOEING Boeing 737 MAX 9
→
06/03/2026
1h 17m
No alerts
Replay Analysis
N37440BOEING Boeing 737 MAX 9
→
06/03/2026
5h 21m
No alerts
Replay Analysis
N17421BOEING Boeing 737 MAX 9
→
06/02/2026
1h 20m
No alerts
Replay Analysis
N17421BOEING Boeing 737 MAX 9
→
06/02/2026
5h 50m
No alerts
Replay Analysis
N76532BOEING Boeing 737-800
→
06/01/2026
1h 18m
No alerts
Replay Analysis
N17406BOEING Boeing 737 MAX 9
→
06/01/2026
5h 51m
No alerts
Replay Analysis
N27246BOEING Boeing 737-800
→
05/31/2026
1h 15m
No alerts
Replay Analysis
N68817BOEING Boeing 737-900
→
05/31/2026
6h 0m
No alerts
Replay Analysis
N17431BOEING Boeing 737 MAX 9
→
05/29/2026
1h 4m
No alerts
Replay Analysis
N17425BOEING Boeing 737 MAX 9
→
05/29/2026
5h 30m
No alerts
Replay Analysis
N76533BOEING Boeing 737-800
→
05/28/2026
1h 17m
No alerts
Replay Analysis
N27439BOEING Boeing 737 MAX 9
→
05/28/2026
5h 36m
No alerts
Replay Analysis
N17414BOEING Boeing 737 MAX 9
→
05/27/2026
5h 41m
No alerts
Replay Analysis
N37516BOEING Boeing 737 MAX 9
→
05/26/2026
1h 33m
No alerts
Replay Analysis
N37447BOEING Boeing 737 MAX 9
→
05/26/2026
5h 47m
No alerts
Replay Analysis
N37553BOEING Boeing 737 MAX 9
→
05/25/2026
1h 28m
No alerts
Replay Analysis
N37450BOEING Boeing 737 MAX 9
→
05/25/2026
5h 35m
No alerts
Replay Analysis
N37516BOEING Boeing 737 MAX 9
→
05/24/2026
1h 26m
No alerts
Replay Analysis
N17591BOEING Boeing 737 MAX 9
→
05/23/2026
1h 20m
No alerts
Replay Analysis
N17437BOEING Boeing 737 MAX 9
→
05/23/2026
5h 42m
No alerts
Replay Analysis
N27520BOEING Boeing 737 MAX 9
→
05/21/2026
1h 23m
No alerts
Replay Analysis
N17565BOEING Boeing 737 MAX 9
→
05/21/2026
5h 37m
No alerts
Replay Analysis
N17420BOEING Boeing 737 MAX 9
→
05/21/2026
3h 9m
No alerts
Replay Analysis
N17420BOEING Boeing 737 MAX 9
→
05/20/2026
2h 25m
No alerts
Replay Analysis
N17420BOEING Boeing 737 MAX 9
→
05/20/2026
5h 35m
No alerts
Replay Analysis
N14250BOEING Boeing 737-800
→
05/18/2026
1h 6m
No alerts
Replay Analysis
N37420BOEING Boeing 737-900
→
05/18/2026
5h 45m
No alerts
Replay Analysis
N17448BOEING Boeing 737 MAX 9
→
05/17/2026
1h 47m
No alerts
Replay Analysis
N64809BOEING Boeing 737-900
→
05/17/2026
5h 44m
No alerts
Replay Analysis
N77543BOEING Boeing 737 MAX 9
→
05/15/2026
1h 7m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window