ASA9421

ALASKA AIRLINES INC · SEA → GSO

ASA9421 is operated by ALASKA AIRLINES INC between Seattle Tacoma International Airport (KSEA) and Piedmont Triad International Airport (KGSO). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 3h 40m. SkyMeter has observed 20 legs of this flight number via ADS-B.

✈
FLIGHTS
20
last 90 days
⏱
AVG DURATION
3h 40m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/21/2026
first → last seen
🗺
ROUTES / TYPES
6 / 5
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
KSEA → KGSO
7
avg 4h 48m · Seattle Tacoma → Piedmont Triad
KSEA → KOKC
5
avg 3h 29m · Seattle Tacoma → Will Rogers World
KSEA → KSAT
4
avg 3h 54m · Seattle Tacoma → San Antonio
KTPA → KGSO
1
avg 1h 35m · Tampa → Piedmont Triad

Aircraft types

Equipment used on this number

5
B39M BOEING Boeing 737 MAX 9
7
B738 BOEING Boeing 737-800
6
B739 BOEING Boeing 737-900
5
B38M BOEING Boeing 737 MAX 8
1
B737 BOEING Boeing 737-700
1

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 ASA9421

30
N519ASBOEING Boeing 737-800
→
08/21/2026
4h 39m
No alerts
Replay Analysis
N955AKBOEING Boeing 737 MAX 9
→
08/11/2026
3h 55m
No alerts
Replay Analysis
N215AKBOEING Boeing 737-900
→
08/07/2026
3h 34m
No alerts
Replay Analysis
N708ALBOEING Boeing 737 MAX 9
→
08/05/2026
5h 12m
⤓ Emergency descent
Replay Analysis
N953AKBOEING Boeing 737 MAX 9
→
08/03/2026
3h 51m
No alerts
Replay Analysis
N474ASBOEING Boeing 737-900
→
08/01/2026
9m
No alerts
Replay Analysis
N513ASBOEING Boeing 737-800
→
07/31/2026
4h 40m
No alerts
Replay Analysis
N913AKBOEING Boeing 737 MAX 9
→
07/29/2026
4h 32m
No alerts
Replay Analysis
N707ALBOEING Boeing 737 MAX 9
→
07/22/2026
1h 35m
No alerts
Replay Analysis
N562ASBOEING Boeing 737-800
→
07/19/2026
4h 25m
No alerts
Replay Analysis
N531ASBOEING Boeing 737-800
→
07/09/2026
7m
No alerts
Replay Analysis
N531ASBOEING Boeing 737-800
→
07/09/2026
3h 32m
No alerts
Replay Analysis
N270AKBOEING Boeing 737-900
→
07/05/2026
3h 13m
No alerts
Replay Analysis
N724ALBOEING Boeing 737 MAX 9
→
07/01/2026
4h 5m
No alerts
Replay Analysis
N805AKBOEING Boeing 737 MAX 8
→
06/27/2026
4h 50m
No alerts
Replay Analysis
N266AKBOEING Boeing 737-900
→
06/23/2026
3h 25m
No alerts
Replay Analysis
N615ASBOEING Boeing 737-700
→
06/21/2026
3h 42m
No alerts
Replay Analysis
N943AKBOEING Boeing 737 MAX 9
→
06/15/2026
3h 46m
No alerts
Replay Analysis
N563ASBOEING Boeing 737-800
→
05/29/2026
5h 10m
No alerts
Replay Analysis
N277AKBOEING Boeing 737-900
→
05/27/2026
4h 54m
No alerts
Replay Analysis
N985AKBOEING Boeing 737 MAX 9
→
05/22/2026
1h 36m
No alerts
Replay Analysis
N806AKBOEING Boeing 737 MAX 8
→
05/19/2026
6m
No alerts
Replay Analysis
N806AKBOEING Boeing 737 MAX 8
→
05/19/2026
4h 55m
No alerts
Replay Analysis
N548ASBOEING Boeing 737-800
→
05/17/2026
3h 32m
No alerts
Replay Analysis
N214AKBOEING Boeing 737-900
→
05/11/2026
3h 20m
No alerts
Replay Analysis
N506ASBOEING Boeing 737-800
→
05/07/2026
3h 38m
No alerts
Replay Analysis
N537ASBOEING Boeing 737-800
→
05/04/2026
1h 7m
No alerts
Replay Analysis
N537ASBOEING Boeing 737-800
→
05/03/2026
3h 42m
No alerts
Replay Analysis
N537ASBOEING Boeing 737-800
→
05/03/2026
3h 42m
No alerts
Replay Analysis
N537ASBOEING Boeing 737-800
→
05/03/2026
4h 50m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window