Alaska Airlines Flight AS15 Deals & Information (2025/2026)

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Alaska Airlines Flight 15 Route Deals From $128

The cheapest prices found with in the last 7 days for return flights were and $128 for one-way flights to San Diego Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number AS15 take?
AS15 operates between BOS and Seattle - Tacoma Intl. Airport (SEA) and flies direct. This journey usually takes 6 hours and 10 minutes.
What terminal does AS15 fly out of?
Direct flights to and from Boston, MA Airport (BOS-Logan Intl.) and Sea-Tac Airport are served by flight number AS15, and passengers booked on this flight usually board from Terminal B.
What kind of plane is on flight number AS15?
Get ready to step aboard an Airbus A321 if you've reserved a seat on flight AS15. Almost all flights from Logan Intl. Airport (BOS) to Seattle - Tacoma Intl. Airport (SEA) operate using this aircraft model.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AS15 flight with Travelocity, please visit our Customer Service Portal.