ASA378 is operated by ALASKA AIRLINES INC between Seattle Tacoma International Airport (KSEA) and Baltimore/Washington International Thurgood Marshall Airport (KBWI). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 4h 18m. SkyMeter has observed 91 legs of this flight number via ADS-B.

✈
FLIGHTS
91
last 90 days
⏱
AVG DURATION
4h 18m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/22/2026
first → last seen
🗺
ROUTES / TYPES
11 / 3
city pairs · airframes
⚠
INCIDENT RATE
2.2%
2 flagged

Routes flown

By count · last 90 days

7
KSEA → KBWI
60
avg 4h 48m · Seattle Tacoma → Baltimore/Washington International Thurgood Marshall
KSEA → PANC
12
avg 3h 23m · Seattle Tacoma → Ted Stevens Anchorage
KSEA → KPIT
2
avg 5h 4m · Seattle Tacoma → Pittsburgh
KPIT → KBWI
2
avg 50m · Pittsburgh → Baltimore/Washington International Thurgood Marshall
KSEA → PAMR
1
avg 3h 27m · Seattle Tacoma → Merrill Field
KSEA → KIND
1
avg 5h 5m · Seattle Tacoma → Indianapolis
KIND → KBWI
1
avg 1h 21m · Indianapolis → Baltimore/Washington International Thurgood Marshall

Aircraft types

Equipment used on this number

3
B739 BOEING Boeing 737-900
51
B39M BOEING Boeing 737 MAX 9
39
B738 BOEING Boeing 737-800
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
2
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 ASA378

30
N274AKBOEING Boeing 737-900
→
08/22/2026
4h 48m
No alerts
Replay Analysis
N972AKBOEING Boeing 737 MAX 9
→
08/18/2026
4h 37m
No alerts
Replay Analysis
N720ALBOEING Boeing 737 MAX 9
→
08/17/2026
4h 51m
No alerts
Replay Analysis
N962AKBOEING Boeing 737 MAX 9
→
08/16/2026
4h 54m
No alerts
Replay Analysis
N260AKBOEING Boeing 737-900
→
08/15/2026
4h 53m
No alerts
Replay Analysis
N253AKBOEING Boeing 737-900
→
08/14/2026
4h 54m
No alerts
Replay Analysis
N972AKBOEING Boeing 737 MAX 9
→
08/13/2026
4h 55m
No alerts
Replay Analysis
N935AKBOEING Boeing 737 MAX 9
→
08/12/2026
4h 18m
No alerts
Replay Analysis
N712ALBOEING Boeing 737 MAX 9
→
08/11/2026
5h 1m
No alerts
Replay Analysis
N733ALBOEING Boeing 737 MAX 9
→
08/10/2026
55m
No alerts
Replay Analysis
N733ALBOEING Boeing 737 MAX 9
→
08/10/2026
4h 56m
No alerts
Replay Analysis
N423ASBOEING Boeing 737-900
→
08/09/2026
2h 57m
No alerts
Replay Analysis
N277AKBOEING Boeing 737-900
→
08/08/2026
4h 40m
No alerts
Replay Analysis
N725ALBOEING Boeing 737 MAX 9
→
08/07/2026
5h 11m
No alerts
Replay Analysis
N903AKBOEING Boeing 737 MAX 9
→
08/06/2026
4h 44m
No alerts
Replay Analysis
N434ASBOEING Boeing 737-900
→
08/05/2026
5h 1m
No alerts
Replay Analysis
N247AKBOEING Boeing 737-900
→
08/04/2026
4h 42m
No alerts
Replay Analysis
N270AKBOEING Boeing 737-900
→
08/03/2026
4h 35m
No alerts
Replay Analysis
N264AKBOEING Boeing 737-900
→
08/02/2026
4h 33m
No alerts
Replay Analysis
N409ASBOEING Boeing 737-900
→
08/01/2026
7h 37m
No alerts
Replay Analysis
N288AKBOEING Boeing 737-900
→
07/31/2026
5h 1m
No alerts
Replay Analysis
N492ASBOEING Boeing 737-900
→
07/30/2026
4h 58m
No alerts
Replay Analysis
N280AKBOEING Boeing 737-900
→
07/29/2026
4h 58m
No alerts
Replay Analysis
N290AKBOEING Boeing 737-900
→
07/28/2026
4h 47m
No alerts
Replay Analysis
N275AKBOEING Boeing 737-900
→
07/27/2026
4h 58m
No alerts
Replay Analysis
N716ALBOEING Boeing 737 MAX 9
→
07/26/2026
4h 28m
No alerts
Replay Analysis
N954AKBOEING Boeing 737 MAX 9
→
07/25/2026
4h 33m
No alerts
Replay Analysis
N924AKBOEING Boeing 737 MAX 9
→
07/24/2026
4h 49m
No alerts
Replay Analysis
N976AKBOEING Boeing 737 MAX 9
→
07/23/2026
4h 36m
No alerts
Replay Analysis
N990AKBOEING Boeing 737 MAX 9
→
07/22/2026
4h 27m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window