ASA120 is operated by ALASKA AIRLINES INC between Incheon International Airport (RKSI) and Seattle Tacoma International Airport (KSEA). The flight is most often flown by a BOEING Boeing 737-800. Typical block time is 5h 57m. SkyMeter has observed 33 legs of this flight number via ADS-B.

✈
FLIGHTS
33
last 90 days
⏱
AVG DURATION
5h 57m
tracked time
📅
SERVICE PERIOD
04/02/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
4 / 4
city pairs · airframes
⚠
INCIDENT RATE
6.1%
2 flagged

Routes flown

By count · last 90 days

2
RKSI → KSEA
15
avg 9h 46m · Incheon → Seattle Tacoma
KMCI → KPDX
11
avg 3h 26m · Kansas City → Portland

Aircraft types

Equipment used on this number

4
B738 BOEING Boeing 737-800
19
B789 BOEING Boeing 787-9 Dreamliner
15
B39M BOEING Boeing 737 MAX 9
9
B739 BOEING Boeing 737-900
8

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
1
Rejected TO
0
Stall warnings
0
Overspeeds
1
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 ASA120

30
N781HABOEING Boeing 787-9 Dreamliner
→
06/03/2026
10h 30m
No alerts
Replay Analysis
N783HABOEING Boeing 787-9 Dreamliner
→
06/01/2026
9h 50m
No alerts
Replay Analysis
N782HABOEING Boeing 787-9 Dreamliner
→
05/31/2026
9h 23m
No alerts
Replay Analysis
N781HABOEING Boeing 787-9 Dreamliner
→
05/29/2026
9h 47m
No alerts
Replay Analysis
N782HABOEING Boeing 787-9 Dreamliner
→
05/28/2026
10h 7m
» Overspeed
Replay Analysis
N784HABOEING Boeing 787-9 Dreamliner
→
05/27/2026
9h 51m
No alerts
Replay Analysis
N781HABOEING Boeing 787-9 Dreamliner
→
05/25/2026
10h 14m
No alerts
Replay Analysis
N783HABOEING Boeing 787-9 Dreamliner
→
05/24/2026
9h 44m
No alerts
Replay Analysis
N784HABOEING Boeing 787-9 Dreamliner
→
05/23/2026
9h 27m
No alerts
Replay Analysis
N784HABOEING Boeing 787-9 Dreamliner
→
05/21/2026
9h 24m
No alerts
Replay Analysis
N780HABOEING Boeing 787-9 Dreamliner
→
05/20/2026
9h 45m
No alerts
Replay Analysis
N783HABOEING Boeing 787-9 Dreamliner
→
05/18/2026
9h 49m
No alerts
Replay Analysis
N784HABOEING Boeing 787-9 Dreamliner
→
05/17/2026
9h 27m
No alerts
Replay Analysis
N781HABOEING Boeing 787-9 Dreamliner
→
05/16/2026
9h 33m
No alerts
Replay Analysis
N784HABOEING Boeing 787-9 Dreamliner
→
05/15/2026
9h 41m
No alerts
Replay Analysis
N947AKBOEING Boeing 737 MAX 9
→
04/21/2026
1h 9m
No alerts
Replay Analysis
N976AKBOEING Boeing 737 MAX 9
→
04/21/2026
2h 21m
No alerts
Replay Analysis
N976AKBOEING Boeing 737 MAX 9
→
04/20/2026
1h 2m
No alerts
Replay Analysis
N976AKBOEING Boeing 737 MAX 9
→
04/20/2026
3h 23m
No alerts
Replay Analysis
N506ASBOEING Boeing 737-800
→
04/20/2026
2h 41m
No alerts
Replay Analysis
N506ASBOEING Boeing 737-800
→
04/19/2026
51m
No alerts
Replay Analysis
N506ASBOEING Boeing 737-800
→
04/19/2026
3h 33m
No alerts
Replay Analysis
N519ASBOEING Boeing 737-800
→
04/18/2026
2h 21m
No alerts
Replay Analysis
N519ASBOEING Boeing 737-800
→
04/17/2026
1h 3m
No alerts
Replay Analysis
N519ASBOEING Boeing 737-800
→
04/17/2026
3h 25m
No alerts
Replay Analysis
N519ASBOEING Boeing 737-800
→
04/17/2026
2h 31m
No alerts
Replay Analysis
N519ASBOEING Boeing 737-800
→
04/16/2026
1h 0m
No alerts
Replay Analysis
N519ASBOEING Boeing 737-800
→
04/16/2026
3h 31m
No alerts
Replay Analysis
N469ASBOEING Boeing 737-900
→
04/16/2026
2h 23m
No alerts
Replay Analysis
N469ASBOEING Boeing 737-900
→
04/15/2026
1h 3m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window