AS306Alaska Airlines · BOS → SEA
live · 4m ago
Route confirmed Alaska Airlines

AS306 BostonBOS · 18:40 SeattleSEA · 21:59

AS306 by Alaska Airlines flies from Boston (BOS) to Seattle (SEA) for the Fri, Oct 9 departure.

Right nowExpected · gate B4
20:57

departs BOS · 137 min late

Typical gate push+152 minmedian posted departure
Typical arrival+34 minmedian over 1 operations
Wins back in air~118 minmedian gate push vs arrival · how planes make up time →

The route today

live boards
BOSBostonOn-time likelyBOS delay board →
SEASeattleHigh riskSEA delay board →
BOS→SEAevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
39%Chance of 15+ min delay
3.1%Chance of cancellation
+9 minAvg hub delay right now

Conditions at BOS and SEA 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 departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Boston to Seattle flights today

same route · Alaska Airlines
AS459departs 07:03
AS215departs 09:03
AS1506departs 15:26
AS289departs 16:48
AS288departs 16:58

If AS306 is cancelled, these are the other Alaska Airlines nonstop flights from Boston to Seattle 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 AS306 actually runs

Pro Flight Search has tracked every published board update for AS306 across the BOS and SEA boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: departed +152 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how AS306 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
10-08BOS 18:40 21:12 (+152)SEA 21:59 22:33 (+34)
10-07BOS 18:40 18:44 (+4)SEA

Board clocks recorded as BOS and SEA published them.

Planning around AS306? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — AS306 Boston to Seattle on-time performance, measured from the BOS and SEA airport boards.

Canonical URL
https://proflightsearch.com/flight/AS306
How we measure this →