ASA603 is operated by ALASKA AIRLINES INC between Phoenix Sky Harbor International Airport (KPHX) and Seattle Tacoma International Airport (KSEA). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 2h 49m. SkyMeter has observed 28 legs of this flight number via ADS-B.

✈
FLIGHTS
28
last 90 days
⏱
AVG DURATION
2h 49m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
4 / 3
city pairs · airframes
⚠
INCIDENT RATE
3.6%
1 flagged

Routes flown

By count · last 90 days

2
KPHX → KSEA
23
avg 2h 53m · Phoenix Sky Harbor → Seattle Tacoma
KPHX → KRNT
1
avg 2h 40m · Phoenix Sky Harbor → Renton

Aircraft types

Equipment used on this number

3
B739 BOEING Boeing 737-900
17
B39M BOEING Boeing 737 MAX 9
8
B738 BOEING Boeing 737-800
3

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 28 operations of ASA603

28
N423ASBOEING Boeing 737-900
→
06/03/2026
3h 0m
No alerts
Replay Analysis
N267AKBOEING Boeing 737-900
→
06/02/2026
3h 7m
No alerts
Replay Analysis
N921AKBOEING Boeing 737 MAX 9
→
06/01/2026
2h 43m
No alerts
Replay Analysis
N471ASBOEING Boeing 737-900
→
05/31/2026
2h 38m
No alerts
Replay Analysis
N431ASBOEING Boeing 737-900
→
05/29/2026
2h 38m
No alerts
Replay Analysis
N294AKBOEING Boeing 737-900
→
05/28/2026
2h 50m
No alerts
Replay Analysis
N722ALBOEING Boeing 737 MAX 9
→
05/26/2026
2h 33m
No alerts
Replay Analysis
N915AKBOEING Boeing 737 MAX 9
→
05/25/2026
2h 47m
No alerts
Replay Analysis
N961AKBOEING Boeing 737 MAX 9
→
05/24/2026
2h 55m
No alerts
Replay Analysis
N977AKBOEING Boeing 737 MAX 9
→
05/21/2026
1h 37m
No alerts
Replay Analysis
N474ASBOEING Boeing 737-900
→
05/20/2026
2h 59m
No alerts
Replay Analysis
N479ASBOEING Boeing 737-900
→
05/18/2026
2h 51m
No alerts
Replay Analysis
N277AKBOEING Boeing 737-900
→
05/17/2026
3h 10m
No alerts
Replay Analysis
N733ALBOEING Boeing 737 MAX 9
→
05/15/2026
3h 4m
No alerts
Replay Analysis
N474ASBOEING Boeing 737-900
→
05/14/2026
2h 46m
No alerts
Replay Analysis
N481ASBOEING Boeing 737-900
→
05/13/2026
2h 39m
No alerts
Replay Analysis
N461ASBOEING Boeing 737-900
→
05/11/2026
2h 54m
No alerts
Replay Analysis
N478ASBOEING Boeing 737-900
→
05/10/2026
3h 8m
No alerts
Replay Analysis
N288AKBOEING Boeing 737-900
→
05/08/2026
2h 25m
No alerts
Replay Analysis
N280AKBOEING Boeing 737-900
→
05/07/2026
3h 5m
No alerts
Replay Analysis
N974AKBOEING Boeing 737 MAX 9
→
05/03/2026
2h 58m
No alerts
Replay Analysis
N946AKBOEING Boeing 737 MAX 9
→
05/02/2026
2h 50m
No alerts
Replay Analysis
N478ASBOEING Boeing 737-900
→
04/25/2026
2h 49m
No alerts
Replay Analysis
N224AKBOEING Boeing 737-900
→
04/23/2026
3h 6m
No alerts
Replay Analysis
N537ASBOEING Boeing 737-800
→
04/21/2026
2h 39m
No alerts
Replay Analysis
N282AKBOEING Boeing 737-900
→
04/20/2026
2h 51m
No alerts
Replay Analysis
N569ASBOEING Boeing 737-800
→
04/19/2026
2h 40m
△ Unstable
Replay Analysis
N597ASBOEING Boeing 737-800
→
04/17/2026
3h 3m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window