ASA403 is operated by ALASKA AIRLINES INC between Portland International Airport (KPDX) and Seattle Tacoma International Airport (KSEA). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 1h 28m. SkyMeter has observed 60 legs of this flight number via ADS-B.

✈
FLIGHTS
60
last 90 days
⏱
AVG DURATION
1h 28m
tracked time
📅
SERVICE PERIOD
04/09/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
6 / 5
city pairs · airframes
⚠
INCIDENT RATE
1.7%
1 flagged

Routes flown

By count · last 90 days

4
KPDX → KSEA
24
avg 58m · Portland → Seattle Tacoma
KFAT → KSEA
16
avg 1h 59m · Fresno Yosemite → Seattle Tacoma
KSEA → KFAT
14
avg 1h 51m · Seattle Tacoma → Fresno Yosemite
KFAT → KRNT
1
avg 2h 4m · Fresno Yosemite → Renton

Aircraft types

Equipment used on this number

5
B739 BOEING Boeing 737-900
31
B39M BOEING Boeing 737 MAX 9
29
B738 BOEING Boeing 737-800
10
B737 BOEING Boeing 737-700
4
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 ASA403

30
N479ASBOEING Boeing 737-900
→
06/03/2026
25m
No alerts
Replay Analysis
N644ASBOEING Boeing 737-700
→
06/03/2026
2h 5m
No alerts
Replay Analysis
N644ASBOEING Boeing 737-700
→
06/03/2026
1h 20m
No alerts
Replay Analysis
N644ASBOEING Boeing 737-700
→
06/02/2026
1h 50m
No alerts
Replay Analysis
N644ASBOEING Boeing 737-700
→
06/02/2026
29m
No alerts
Replay Analysis
N731ALBOEING Boeing 737 MAX 9
→
06/02/2026
1h 51m
No alerts
Replay Analysis
N731ALBOEING Boeing 737 MAX 9
→
06/02/2026
1h 57m
No alerts
Replay Analysis
N512ASBOEING Boeing 737-800
→
06/01/2026
1h 52m
No alerts
Replay Analysis
N512ASBOEING Boeing 737-800
→
06/01/2026
1h 37m
No alerts
Replay Analysis
N570ASBOEING Boeing 737-800
→
05/31/2026
1h 50m
No alerts
Replay Analysis
N570ASBOEING Boeing 737-800
→
05/31/2026
1h 37m
No alerts
Replay Analysis
N947AKBOEING Boeing 737 MAX 9
→
05/29/2026
1h 59m
No alerts
Replay Analysis
N947AKBOEING Boeing 737 MAX 9
→
05/29/2026
1h 32m
No alerts
Replay Analysis
N947AKBOEING Boeing 737 MAX 9
→
05/28/2026
23m
No alerts
Replay Analysis
N947AKBOEING Boeing 737 MAX 9
→
05/28/2026
1h 55m
No alerts
Replay Analysis
N290AKBOEING Boeing 737-900
→
05/28/2026
2h 18m
No alerts
Replay Analysis
N290AKBOEING Boeing 737-900
→
05/28/2026
1h 44m
No alerts
Replay Analysis
N472ASBOEING Boeing 737-900
→
05/27/2026
1h 46m
No alerts
Replay Analysis
N472ASBOEING Boeing 737-900
→
05/27/2026
1h 37m
No alerts
Replay Analysis
N472ASBOEING Boeing 737-900
→
05/26/2026
29m
No alerts
Replay Analysis
N472ASBOEING Boeing 737-900
→
05/26/2026
2h 6m
No alerts
Replay Analysis
N978AKBOEING Boeing 737 MAX 9
→
05/26/2026
1h 25m
No alerts
Replay Analysis
N978AKBOEING Boeing 737 MAX 9
→
05/25/2026
30m
No alerts
Replay Analysis
N978AKBOEING Boeing 737 MAX 9
→
05/25/2026
1h 56m
No alerts
Replay Analysis
N440ASBOEING Boeing 737-900
→
05/25/2026
1h 54m
No alerts
Replay Analysis
N440ASBOEING Boeing 737-900
→
05/25/2026
1h 19m
No alerts
Replay Analysis
N440ASBOEING Boeing 737-900
→
05/24/2026
1h 47m
No alerts
Replay Analysis
N440ASBOEING Boeing 737-900
→
05/24/2026
27m
No alerts
Replay Analysis
N478ASBOEING Boeing 737-900
→
05/24/2026
1h 50m
No alerts
Replay Analysis
N478ASBOEING Boeing 737-900
→
05/24/2026
1h 48m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window