ASA520 is operated by ALASKA AIRLINES INC between Seattle Tacoma International Airport (KSEA) and San Antonio International Airport (KSAT). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 3h 42m. SkyMeter has observed 86 legs of this flight number via ADS-B.

✈
FLIGHTS
86
last 90 days
⏱
AVG DURATION
3h 42m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/18/2026
first → last seen
🗺
ROUTES / TYPES
5 / 4
city pairs · airframes
⚠
INCIDENT RATE
1.2%
1 flagged

Routes flown

By count · last 90 days

2
KSEA → KSAT
82
avg 3h 46m · Seattle Tacoma → San Antonio
KSEA → K8T8
1
avg 3h 23m · Seattle Tacoma → San Geronimo Airpark

Aircraft types

Equipment used on this number

4
B39M BOEING Boeing 737 MAX 9
36
B739 BOEING Boeing 737-900
35
B38M BOEING Boeing 737 MAX 8
8
B738 BOEING Boeing 737-800
7

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 ASA520

30
N440ASBOEING Boeing 737-900
→
08/18/2026
3h 40m
No alerts
Replay Analysis
N272AKBOEING Boeing 737-900
→
08/17/2026
3h 50m
No alerts
Replay Analysis
N937AKBOEING Boeing 737 MAX 9
→
08/16/2026
3h 41m
No alerts
Replay Analysis
N729ALBOEING Boeing 737 MAX 9
→
08/15/2026
3h 48m
No alerts
Replay Analysis
N248AKBOEING Boeing 737-900
→
08/14/2026
3h 56m
No alerts
Replay Analysis
N491ASBOEING Boeing 737-900
→
08/13/2026
2h 19m
No alerts
Replay Analysis
N966AKBOEING Boeing 737 MAX 9
→
08/11/2026
3h 34m
No alerts
Replay Analysis
N285AKBOEING Boeing 737-900
→
08/10/2026
3h 36m
No alerts
Replay Analysis
N725ALBOEING Boeing 737 MAX 9
→
08/09/2026
3h 39m
No alerts
Replay Analysis
N952AKBOEING Boeing 737 MAX 9
→
08/08/2026
3h 34m
No alerts
Replay Analysis
N556ASBOEING Boeing 737-800
→
08/07/2026
3h 28m
No alerts
Replay Analysis
N967AKBOEING Boeing 737 MAX 9
→
08/06/2026
3h 26m
No alerts
Replay Analysis
N949AKBOEING Boeing 737 MAX 9
→
08/05/2026
3h 24m
No alerts
Replay Analysis
N915AKBOEING Boeing 737 MAX 9
→
08/04/2026
3h 40m
No alerts
Replay Analysis
N402ASBOEING Boeing 737-900
→
08/03/2026
3h 41m
No alerts
Replay Analysis
N265AKBOEING Boeing 737-900
→
08/02/2026
3h 40m
No alerts
Replay Analysis
N942AKBOEING Boeing 737 MAX 9
→
08/01/2026
3h 48m
No alerts
Replay Analysis
N976AKBOEING Boeing 737 MAX 9
→
07/31/2026
3h 38m
No alerts
Replay Analysis
N457ASBOEING Boeing 737-900
→
07/30/2026
4h 0m
No alerts
Replay Analysis
N982AKBOEING Boeing 737 MAX 9
→
07/29/2026
3h 49m
No alerts
Replay Analysis
N270AKBOEING Boeing 737-900
→
07/28/2026
7m
No alerts
Replay Analysis
N270AKBOEING Boeing 737-900
→
07/28/2026
3h 54m
No alerts
Replay Analysis
N477ASBOEING Boeing 737-900
→
07/27/2026
3h 57m
No alerts
Replay Analysis
N492ASBOEING Boeing 737-900
→
07/26/2026
3h 51m
No alerts
Replay Analysis
N260AKBOEING Boeing 737-900
→
07/25/2026
3h 59m
No alerts
Replay Analysis
N938AKBOEING Boeing 737 MAX 9
→
07/24/2026
3h 39m
No alerts
Replay Analysis
N215AKBOEING Boeing 737-900
→
07/23/2026
3h 57m
No alerts
Replay Analysis
N706ALBOEING Boeing 737 MAX 9
→
07/22/2026
3h 55m
No alerts
Replay Analysis
N495ASBOEING Boeing 737-900
→
07/21/2026
3h 42m
No alerts
Replay Analysis
N281AKBOEING Boeing 737-900
→
07/20/2026
3h 36m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window