No delays reported for AS 306 (SEA→BOS, BOS→SEA) as of 6:43 PM ET. It arrived on time 68.4% of the time in June-August 2026. When it was late, the average delay was 53 minutes. None were cancelled. Right now there are no reported delays at SEA, BOS.
Looks on time
Leg 2 of 2 (BOS → SEA): Next leg BOS → SEA, scheduled 7:59 PM local time. No delays at BOS right now.
Cancellation risk: Low 0% of its flights were cancelled in June-August 2026.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Alaska Airlines for official times. Live position: adsb.lol (open data, ODbL).
Before you fly
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| SEA → BOS Seattle, WA to Boston, MA | 8:23 AM → 4:53 PM | 70% |
| BOS → SEA Boston, MA to Seattle, WA | 7:59 PM → 11:12 PM | 64% |
Local times. Schedules change; check your booking.
How reliable is AS 306?
| Arrived on time (within 15 min) | 68.4% |
| Average delay when late | 53 min |
| Cancelled | 0% |
| Diverted | 0% |
| Flights tracked | 114 |
Best and worst days to fly AS 306
AS 306 was most reliable on Wednesdays (88% on time) and least reliable on Tuesdays (62%).
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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 → 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 306 delayed today?
Right now there are no reported delays at SEA, BOS. Checked 6:43 PM ET. For this flight's gate and exact status, check the Alaska Airlines app.
Is AS 306 usually on time?
AS 306 arrived within 15 minutes of schedule 68.4% of the time in June-August 2026, with an average delay of 53 minutes when late.
How often is AS 306 cancelled?
0% of AS 306 flights were cancelled in June-August 2026.