Likely delayed: there are delays at AS 628's airports as of 6:43 PM ET. It arrived on time 27.8% of the time in June-August 2026. When it was late, the average delay was 1h 2m. None were cancelled. SFO has major delays (wind, max 5 hours and 41 minutes), so this flight is likely to be delayed.
May not fly today
Leg 2 of 2 (SEA → SFO): Next leg SEA → SFO, scheduled 7:42 PM local time. No delays at SEA right now. 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; SFO has major delays.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Alaska Airlines for official times.
What to do now
Some links are affiliate links.
Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| PHX → PDX Phoenix, AZ to Portland, OR | 9:00 AM → 11:53 AM | 78% |
| SEA → SFO Seattle, WA to San Francisco, CA | 7:42 PM → 9:54 PM | 22% |
Local times. Schedules change; check your booking.
How reliable is AS 628?
| Arrived on time (within 15 min) | 27.8% |
| Average delay when late | 62 min |
| Cancelled | 0% |
| Diverted | 0% |
| Flights tracked | 90 |
Best and worst days to fly AS 628
AS 628 was most reliable on Saturdays (50% on time) and least reliable on Sundays (15%).
| Monday | |
| Tuesday | |
| Wednesday | |
| 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 → SFO
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 628 delayed today?
SFO has major delays (wind, max 5 hours and 41 minutes), so this flight is likely to be delayed. Checked 6:43 PM ET. For this flight's gate and exact status, check the Alaska Airlines app.
Is AS 628 usually on time?
AS 628 arrived within 15 minutes of schedule 27.8% of the time in June-August 2026, with an average delay of 62 minutes when late.
How often is AS 628 cancelled?
0% of AS 628 flights were cancelled in June-August 2026.