$110 Cheap Spirit Airlines flights San Diego (SAN) to Boston (BOS)

You can discover affordable return Spirit Airlines flights from $221 from SAN to BOS by sorting your results from “Price (lowest to highest)” on Expedia. Or search for bargains from $110 for a one-way trip.**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.

January is one of the cheapest months to travel to Boston with Spirit Airlines. You could also find excellent prices on return and one-way tickets in February.

Start searching one to three months before your departure to find cheaper fares on Spirit Airlines flights from San Diego Intl. Airport (SAN) to Logan Intl. Airport (BOS). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic trips.*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.

Click on the “Nonstop” filter when looking for direct Spirit Airlines flights from SAN to BOS. It’s also a great way to compare other carriers servicing the same nonstop trip.

Search Spirit Airlines’s earliest flights from SAN to BOS by selecting the “Early Morning” and “Morning” filters. Not only will you get to where you’re going sooner, early departures are also 20% less likely to be canceled.**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.

Take a Spirit Airlines flight from San Diego Intl. Airport (SAN) to Boston, and you’re most likely to arrive at Logan Intl. Airport (BOS). This is the airline’s main hub in this city.

A rewarding loyalty program and the ability to rack up points through Free Spirit are the start of the reasons to travel from SAN to BOS with Spirit Airlines. Plus, by joining Expedia’s free One Key™ program, you can earn OneKeyCash™* in addition to any airline loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your ticket type, a fee generally applies if you cancel or change your booking more than 24 hours after it’s been confirmed. To find tickets with more flexibility, select our “No cancel fee” or “Changes included” filter when you look for flights. To learn more about canceling or changing your reservation, visit “Trips,” select your flight and tick “Manage Booking.”