ASA42 is operated by ALASKA AIRLINES INC between San Francisco International Airport (KSFO) and John F Kennedy International Airport (KJFK). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 5h 19m. SkyMeter has observed 86 legs of this flight number via ADS-B.

✈
FLIGHTS
86
last 90 days
⏱
AVG DURATION
5h 19m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 9/4/2026
first → last seen
🗺
ROUTES / TYPES
4 / 4
city pairs · airframes
⚠
INCIDENT RATE
1.2%
1 flagged

Routes flown

By count · last 90 days

2
KSFO → KJFK
65
avg 5h 44m · San Francisco → John F Kennedy
KHAF → KJFK
9
avg 5h 39m · Half Moon Bay → John F Kennedy

Aircraft types

Equipment used on this number

4
B739 BOEING Boeing 737-900
96
B39M BOEING Boeing 737 MAX 9
83
B738 BOEING Boeing 737-800
48
B38M BOEING Boeing 737 MAX 8
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
1
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 ASA42

30
N729ALBOEING Boeing 737 MAX 9
→
9/4/2026
3h 22m
No alerts
Replay Analysis
N724ALBOEING Boeing 737 MAX 9
→
9/4/2026
4h 34m
No alerts
Replay Analysis
N809AKBOEING Boeing 737 MAX 8
→
9/2/2026
1h 39m
No alerts
Replay Analysis
N435ASBOEING Boeing 737-900
→
9/2/2026
4h 10m
No alerts
Replay Analysis
N435ASBOEING Boeing 737-900
→
9/1/2026
1h 37m
No alerts
Replay Analysis
N435ASBOEING Boeing 737-900
→
9/1/2026
5h 48m
No alerts
Replay Analysis
N277AKBOEING Boeing 737-900
→
9/1/2026
3h 7m
No alerts
Replay Analysis
N277AKBOEING Boeing 737-900
→
8/31/2026
5h 56m
No alerts
Replay Analysis
N277AKBOEING Boeing 737-900
→
8/31/2026
2h 49m
No alerts
Replay Analysis
N722ALBOEING Boeing 737 MAX 9
→
8/31/2026
2h 36m
No alerts
Replay Analysis
N722ALBOEING Boeing 737 MAX 9
→
8/30/2026
5h 57m
No alerts
Replay Analysis
N722ALBOEING Boeing 737 MAX 9
→
8/30/2026
3h 20m
No alerts
Replay Analysis
N912AKBOEING Boeing 737 MAX 9
→
8/30/2026
2h 4m
△ Low approach-stability score
Replay Analysis
N912AKBOEING Boeing 737 MAX 9
→
8/29/2026
3h 20m
No alerts
Replay Analysis
N912AKBOEING Boeing 737 MAX 9
→
8/29/2026
5h 24m
△ Low approach-stability score
Replay Analysis
N495ASBOEING Boeing 737-900
→
8/29/2026
2h 36m
No alerts
Replay Analysis
N495ASBOEING Boeing 737-900
→
8/28/2026
5h 45m
No alerts
Replay Analysis
N495ASBOEING Boeing 737-900
→
8/28/2026
3h 9m
No alerts
Replay Analysis
N403ASBOEING Boeing 737-900
→
8/28/2026
4h 56m
No alerts
Replay Analysis
N403ASBOEING Boeing 737-900
→
8/27/2026
5h 42m
No alerts
Replay Analysis
N403ASBOEING Boeing 737-900
→
8/27/2026
46m
No alerts
Replay Analysis
N275AKBOEING Boeing 737-900
→
8/27/2026
3h 4m
No alerts
Replay Analysis
N275AKBOEING Boeing 737-900
→
8/26/2026
6h 25m
No alerts
Replay Analysis
N275AKBOEING Boeing 737-900
→
8/26/2026
3h 20m
No alerts
Replay Analysis
N297AKBOEING Boeing 737-900
→
8/26/2026
2h 36m
No alerts
Replay Analysis
N297AKBOEING Boeing 737-900
→
8/25/2026
5h 32m
No alerts
Replay Analysis
N297AKBOEING Boeing 737-900
→
8/25/2026
2h 54m
No alerts
Replay Analysis
N982AKBOEING Boeing 737 MAX 9
→
8/25/2026
3h 23m
No alerts
Replay Analysis
N982AKBOEING Boeing 737 MAX 9
→
8/24/2026
3h 0m
No alerts
Replay Analysis
N982AKBOEING Boeing 737 MAX 9
→
8/24/2026
6h 24m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window