No delays reported for AS 378 (SEA→BWI, SEA→ANC) as of 6:45 PM ET. It arrived on time 78.7% of the time in June-August 2026. When it was late, the average delay was 39 minutes. None were cancelled. Right now there are no reported delays at SEA, BWI, ANC.
May not fly today
Leg 2 of 2 (SEA → ANC): Should be in the air from SEA, scheduled to land at ANC at 3:08 PM local time. This flight number flew about 6 days a week in June-August 2026, so it may not operate today.
Cancellation risk: Medium 0% of its flights were cancelled in June-August 2026; rough weather at ANC.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Alaska Airlines for official times.
What to do now
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| SEA → BWI Seattle, WA to Baltimore, MD | 9:03 AM → 5:04 PM | 76% |
| SEA → ANC Seattle, WA to Anchorage, AK | 12:19 PM → 3:08 PM | 100% |
Local times. Schedules change; check your booking.
How reliable is AS 378?
| Arrived on time (within 15 min) | 78.7% |
| Average delay when late | 39 min |
| Cancelled | 0% |
| Diverted | 3.3% |
| Flights tracked | 92 |
Best and worst days to fly AS 378
AS 378 was most reliable on Wednesdays (92% on time) and least reliable on Mondays (62%).
| Monday | |
| Tuesday | |
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by Alaska Airlines to the Department of Transportation.
Other flights SEA → BWI
All flights on this route, ranked
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the Alaska Airlines app.
Alaska Airlines delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is AS 378 delayed today?
Right now there are no reported delays at SEA, BWI, ANC. Checked 6:45 PM ET. For this flight's gate and exact status, check the Alaska Airlines app.
Is AS 378 usually on time?
AS 378 arrived within 15 minutes of schedule 78.7% of the time in June-August 2026, with an average delay of 39 minutes when late.
How often is AS 378 cancelled?
0% of AS 378 flights were cancelled in June-August 2026.