About 1 in 5 AS 436 flights from Portland arrived 15+ minutes late, diverted or cancelled over the past year (20%); 0.5% were cancelled. The typical flight landed 3 minutes early.
AS 436: PDX → BOS
Scheduled to leave Portland at 9:56 p.m. local time. Over the past year it arrived on time 80% of the time (189 flights), in line with other AS flights on the route at that hour (80%). Last seen in the data Aug 31, 2026.
Usually Alaska Airlines's last flight of the day from Portland to Boston (100% of days). Alaska Airlines's last PDX–BOS flight was cancelled 0.5% of the time, against 0.0% for its earlier ones. If it's cancelled, the next Alaska Airlines flight is usually around 7:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 33 | 88% |
| Tuesday | 16 | — |
| Wednesday | 27 | 74% |
| Thursday | 32 | 78% |
| Friday | 31 | 87% |
| Saturday | 17 | — |
| Sunday | 33 | 82% |
Why it was late
All flights PDX → BOS · Connecting off AS 436? Check the risk
Questions
How often is AS 436 from PDX to BOS late?
Alaska Airlines 436 from Portland, OR to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 20% of 189 scheduled flights between September 2025 and August 2026. 0.5% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Alaska Airlines for today's flight. Method.