ASA4 is operated by ALASKA AIRLINES INC. between Seattle Tacoma International Airport (KSEA) and Ronald Reagan Washington National Airport (KDCA). The flight is most often flown by a BOEING Boeing 737-800. Typical block time is 4h 25m. SkyMeter has observed 29 legs of this flight number via ADS-B.

✈
FLIGHTS
29
last 90 days
⏱
AVG DURATION
4h 25m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
3 / 2
city pairs · airframes
⚠
INCIDENT RATE
48.3%
14 flagged

Routes flown

By count · last 90 days

1
KSEA → KDCA
23
avg 4h 48m · Seattle Tacoma → Ronald Reagan Washington National

Aircraft types

Equipment used on this number

2
B738 BOEING Boeing 737-800
22
B38M BOEING Boeing 737 MAX 8
7

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
13
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
1
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 29 operations of ASA4

29
N513ASBOEING Boeing 737-800
→
06/03/2026
4h 50m
△ Unstable
Replay Analysis
N514ASBOEING Boeing 737-800
→
06/02/2026
4h 57m
No alerts
Replay Analysis
N804AKBOEING Boeing 737 MAX 8
→
06/01/2026
4h 54m
No alerts
Replay Analysis
N570ASBOEING Boeing 737-800
→
05/31/2026
5h 4m
△ Unstable
Replay Analysis
N534ASBOEING Boeing 737-800
→
05/29/2026
4h 59m
△ Unstable→ Excursion
Replay Analysis
N594ASBOEING Boeing 737-800
→
05/28/2026
4h 46m
No alerts
Replay Analysis
N557ASBOEING Boeing 737-800
→
05/26/2026
4h 57m
No alerts
Replay Analysis
N592ASBOEING Boeing 737-800
→
05/25/2026
4h 36m
No alerts
Replay Analysis
N589ASBOEING Boeing 737-800
→
05/24/2026
4h 50m
No alerts
Replay Analysis
N518ASBOEING Boeing 737-800
→
05/23/2026
4h 53m
No alerts
Replay Analysis
N524ASBOEING Boeing 737-800
→
05/21/2026
4h 44m
△ Unstable
Replay Analysis
N569ASBOEING Boeing 737-800
→
05/18/2026
4h 50m
△ Unstable
Replay Analysis
N589ASBOEING Boeing 737-800
→
05/17/2026
4h 52m
No alerts
Replay Analysis
N809AKBOEING Boeing 737 MAX 8
→
05/15/2026
4h 37m
No alerts
Replay Analysis
N803AKBOEING Boeing 737 MAX 8
→
05/14/2026
4h 57m
△ Unstable
Replay Analysis
N823AKBOEING Boeing 737 MAX 8
→
05/13/2026
4h 38m
△ Unstable
Replay Analysis
N516ASBOEING Boeing 737-800
→
05/11/2026
4h 26m
△ Unstable
Replay Analysis
N815AKBOEING Boeing 737 MAX 8
→
05/10/2026
4h 33m
No alerts
Replay Analysis
N801AKBOEING Boeing 737 MAX 8
→
05/08/2026
11m
△ Unstable
Replay Analysis
N823AKBOEING Boeing 737 MAX 8
→
05/07/2026
1h 18m
△ Unstable
Replay Analysis
N533ASBOEING Boeing 737-800
→
05/04/2026
1h 19m
No alerts
Replay Analysis
N516ASBOEING Boeing 737-800
→
05/03/2026
5h 2m
No alerts
Replay Analysis
N517ASBOEING Boeing 737-800
→
04/25/2026
4h 47m
No alerts
Replay Analysis
N585ASBOEING Boeing 737-800
→
04/23/2026
5h 1m
No alerts
Replay Analysis
N530ASBOEING Boeing 737-800
→
04/21/2026
5h 5m
↻ Go-around
Replay Analysis
N524ASBOEING Boeing 737-800
→
04/20/2026
4h 34m
No alerts
Replay Analysis
N590ASBOEING Boeing 737-800
→
04/19/2026
4h 33m
△ Unstable
Replay Analysis
N518ASBOEING Boeing 737-800
→
04/18/2026
4h 47m
△ Unstable
Replay Analysis
N529ASBOEING Boeing 737-800
→
04/17/2026
4h 54m
△ Unstable
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window