$125 Cheap United flights San Antonio (SAT) to Boston (BOS)

Apply the “Price (lowest to highest)” filter on Expedia to search for cheap United Airlines round-trip flights from $254 from SAT to BOS. Affordable one-way tickets from $125 are available as well.**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.

Browse for return or one-way flights to Boston in January or February. You could find an affordable fare with United Airlines during these off-peak months.

Look for affordable United Airlines flights from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS) one to three months before your departure date. 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. No matter the fare type and journey, the best day to book a domestic flight is generally Sunday and the most expensive tends to be 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.

Click on the “Nonstop” filter when looking for direct United Airlines flights from SAT to BOS. You can also compare other airlines servicing the same nonstop trip.

Search United Airlines’s earliest flights from SAT to BOS by checking 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.

Jump on a United Airlines flight from San Antonio Intl. Airport (SAT) to Boston, and you’ll likely come in to Logan Intl. Airport (BOS). This is the airline’s main hub in this destination.

With a rewarding loyalty program, United Airlines is a popular choice for many travelers departing from SAT to BOS. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You can usually cancel or reschedule your flight, although there may be additional fees if you made your booking over 24 hours ago. Need flexible options? Make use of Expedia’s “No cancel fee” and “Changes included” filters to find flights that won’t charge you extra if you need to adjust your plans. To make modifications, head to “Trips,” select your flight and click on “Manage Booking” for more details.