$179 Cheap Delta flights Boston (BOS) to San Antonio (SAT)

Grab cheap round-trip Delta Air Lines flights from $239 from BOS to SAT by sorting your results from “Price (lowest to highest)” on Expedia. Or search for options from $179 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.

Search for one-way or return flights to San Antonio in January or September. You could find an affordable fare with Delta Air Lines during these off-season months.

Begin your search one to three months before your departure to find cheap fares on Delta Air Lines flights from Logan Intl. Airport (BOS) to San Antonio Intl. Airport (SAT). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic journeys.*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.

Take off on one of Delta Air Lines’s 6 direct weekly flights from Logan Intl. Airport (BOS) to San Antonio Intl. Airport (SAT). To see your options, enter your origin, dates and destination and hit search. Next, apply the “Nonstop” and “Airline” filters.

On average, it takes 4h 54m to travel nonstop from Logan Intl. Airport (BOS) to San Antonio Intl. Airport (SAT) with Delta Air Lines.

The earliest flight from BOS to SAT with Delta Air Lines leaves at 12:01PM UTC-5. You’ll touch down at 3:55PM UTC-6. The last Delta Air Lines flight of the day leaves at 12:01PM UTC-5 and arrives at 3:55PM UTC-6. With around 20% fewer cancellations for departures before noon, starting your travel day early is usually the best choice.**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.

San Antonio Intl. Airport (SAT) is the main San Antonio gateway for Delta Air Lines flights from Logan Intl. Airport (BOS).

Offering a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a top choice for many passengers flying from BOS to SAT. Plus, if you’re a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Book a Delta Air Lines flight from Logan Intl. Airport (BOS) to San Antonio Intl. Airport (SAT), and you’ll likely be flying on an Airbus A320. Keep in mind though, that the aircraft type can change due to operational requirements.

Changes are typically free within 24 hours of booking, but your airline may add a charge after that. For more details about altering your flights, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to update your itinerary without additional costs, check the “No cancel fee” or “Changes included” filter when organizing your next break.