Cheap Alaska Airlines flights San Francisco (SFO) to Boston (BOS)

You can find budget-friendly return Alaska Airlines flights from SFO to BOS by sorting your results from “Price (lowest to highest)” on Expedia. Or look for options for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines flights to Boston are typically cheaper in the off-peak months of January and February. Whether you’re after a return or one-way ticket, you could find a better deal then.

Look for affordable Alaska Airlines flights from San Francisco Intl. Airport (SFO) to Logan Intl. Airport (BOS) one to three months ahead of your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the best day of the week to book a domestic flight is usually Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Enter your dates, click search and use the “Nonstop” filter on Expedia to find any direct flights from SFO to BOS with Alaska Airlines or other airlines.

To find the earliest departure from SFO to BOS with Alaska Airlines, filter your results by “Early Morning” and “Morning.” Booking an early flight usually means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Board an Alaska Airlines flight from San Francisco Intl. Airport (SFO) to Boston, and you’ll most likely land at Logan Intl. Airport (BOS). This is the airline’s main hub in this destination.

Offering an excellent in-flight experience and top-tier customer service, Alaska Airlines is the leading choice for many passengers flying from SFO to BOS. What’s more, if you’re a Mileage Plan and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the ticket type you purchased, a fee typically applies if you cancel or change your flight more than 24 hours after it has been confirmed. To find tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when you look for flights. To learn more about canceling or modifying your reservation, go to “Trips,” select your flight and tick “Manage Booking.”