AS311 BostonBOS · 09:33 PortlandPDX · 12:38
AS311 by Alaska Airlines flies from Boston (BOS) to Portland (PDX) for the Wed, Sep 16 departure.
departs BOS · on schedule
board checked 30m ago · checking again in 45s
Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival +0 min · 0 cancelled · 7 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at BOS and PDX are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Boston to Portland flights today
same route · Alaska AirlinesIf AS311 is cancelled, this is the other Alaska Airlines nonstop flight from Boston to Portland on the same day, with scheduled departure times in BOS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AS311 actually runs
Pro Flight Search has tracked every published board update for AS311 across the BOS and PDX boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 7 confirmed landings · 6/7 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AS311 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as BOS and PDX published them.
Planning around AS311? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — AS311 Boston to Portland on-time performance, measured from the BOS and PDX airport boards.
https://proflightsearch.com/flight/AS311
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