No delays reported for AS 1505 (SEA → BOS) as of 6:51 PM ET. It arrived on time 96.8% of the time in June-August 2026. When it was late, the average delay was 32 minutes. None were cancelled. Right now there are no reported delays at SEA, BOS.
May not fly today
Next leg SEA → BOS, scheduled 6:03 AM local time. No delays at SEA right now. This flight number flew about 2 days a week in June-August 2026, so it may not operate today.
Cancellation risk: Low 0% of its flights were cancelled in June-August 2026; only 31 flights on record.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Alaska Airlines for official times.
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| SEA → BOS Seattle, WA to Boston, MA | 6:03 AM → 2:23 PM | 97% |
Local times. Schedules change; check your booking.
How reliable is AS 1505?
| Arrived on time (within 15 min) | 96.8% |
| Average delay when late | 32 min |
| Cancelled | 0% |
| Diverted | 0% |
| Flights tracked | 31 |
Best and worst days to fly AS 1505
AS 1505 was most reliable on Mondays (100% on time) and least reliable on Sundays (83%).
| Monday | |
| Tuesday | Too few flights |
| Wednesday | Too few flights |
| Thursday | |
| Friday | |
| Saturday | |
| Sunday |
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 → BOS
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 1505 delayed today?
Right now there are no reported delays at SEA, BOS. Checked 6:51 PM ET. For this flight's gate and exact status, check the Alaska Airlines app.
Is AS 1505 usually on time?
AS 1505 arrived within 15 minutes of schedule 96.8% of the time in June-August 2026, with an average delay of 32 minutes when late.
How often is AS 1505 cancelled?
0% of AS 1505 flights were cancelled in June-August 2026.