$104 Cheap Flights from San Antonio (SAT) to Boston (BOS)

View $104 flight on Wed, Jun 18, 2025Opens in a new window
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Cheap Flights from San Antonio to Boston (SAT-BOS)

Prices were available within the past 7 days and start at $104 for one-way flights and $207 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Mon, Jun 9 - Tue, Jun 17
SAT
San Antonio
BOS
Boston
$207 Roundtrip, found 5 hours ago
$207
Roundtrip
found 5 hours ago
Select Spirit Airlines flight, departing Mon, Jun 9 from San Antonio to Boston, returning Tue, Jun 17, priced at $207 found 5 hours ago
Spirit Airlines
Wed, May 21 - Wed, Jun 4
SAT
San Antonio
BOS
Boston
$211 Roundtrip, found 2 days ago
$211
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Wed, May 21 from San Antonio to Boston, returning Wed, Jun 4, priced at $211 found 2 days ago
Spirit Airlines
Wed, Jun 11 - Sat, Jul 19
SAT
San Antonio
BOS
Boston
$223 Roundtrip, found 3 days ago
$223
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Wed, Jun 11 from San Antonio to Boston, returning Sat, Jul 19, priced at $223 found 3 days ago
Spirit Airlines
Wed, May 21 - Wed, May 28
SAT
San Antonio
BOS
Boston
$224 Roundtrip, found 2 hours ago
$224
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Wed, May 21 from San Antonio to Boston, returning Wed, May 28, priced at $224 found 2 hours ago
Spirit Airlines
Sat, Jun 7 - Tue, Jun 17
SAT
San Antonio
BOS
Boston
$231 Roundtrip, found 1 hour ago
$231
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Sat, Jun 7 from San Antonio to Boston, returning Tue, Jun 17, priced at $231 found 1 hour ago
Spirit Airlines
Tue, Jun 24 - Fri, Jul 4
SAT
San Antonio
BOS
Boston
$233 Roundtrip, found 1 hour ago
$233
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Tue, Jun 24 from San Antonio to Boston, returning Fri, Jul 4, priced at $233 found 1 hour ago
Delta
Thu, Jul 17 - Sat, Jul 19
SAT
San Antonio
BOS
Boston
$239 Roundtrip, just found
$239
Roundtrip
just found
Select Delta flight, departing Thu, Jul 17 from San Antonio to Boston, returning Sat, Jul 19, priced at $239 just found
Frontier Airlines
Sun, May 18 - Wed, May 21
SAT
San Antonio
BOS
Boston
$240 Roundtrip, found 9 hours ago
$240
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Sun, May 18 from San Antonio to Boston, returning Wed, May 21, priced at $240 found 9 hours ago
Southwest Airlines
Tue, Jun 10 - Tue, Jun 17
SAT
San Antonio
BOS
Boston
$252 Roundtrip, found 7 hours ago
$252
Roundtrip
found 7 hours ago
Select Southwest Airlines flight, departing Tue, Jun 10 from San Antonio to Boston, returning Tue, Jun 17, priced at $252 found 7 hours ago
American Airlines
Tue, Jul 22 - Fri, Aug 1
SAT
San Antonio
BOS
Boston
$254 Roundtrip, found 1 hour ago
$254
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Tue, Jul 22 from San Antonio to Boston, returning Fri, Aug 1, priced at $254 found 1 hour ago
Flights from San Antonio (SAT) to Boston (BOS)
Origin airport
San Antonio Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$207
Distance
1761 mi

San Antonio to Boston Flights

The cheapest times to fly from San Antonio to Boston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Antonio to Boston are during the month of June. You can find some of the cheapest flights from San Antonio to Boston with Expedia's search tool and vast selection of airlines.

The best time to book a flight from San Antonio to Boston

Sunday is one of the best days to book for cheap flights from San Antonio to Boston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from San Antonio to Boston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Antonio to Boston in 2025. You can also book with separate airlines for your outbound and return journeys, from $104 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Antonio to Boston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Antonio to Boston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS) cost?
Cheap return flights from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS) start from $239. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Delta flight leaving SAT on May 20 2025 and touching down at BOS. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from SAT to BOS?
The cheapest flights from SAT to BOS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS)?
Fly directly from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS) on a Delta Air Lines flight.
What is the cheapest airline that flies from SAT to BOS?
At the moment, the cheapest carrier operating one-way flights from SAT to BOS is Delta. You can take off on this route from $179. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SAT on July 19 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS)?
On average, there are 6 direct flights departing from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS) every week. If you don’t see one that suits your schedule, think about a flight that has a layover. Customize your search on Expedia to include one or more stops and select the next best alternative.
What are the most popular departure times for flights from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS)?
Flights between SAT and BOS tend to be busiest at 12 PM. If you’re after a quieter trip and potentially cheaper tickets, choose a time when demand is lower.
What day of the week has the most flights from SAT to BOS?
If you fly on a Friday, you’ll get the greatest range of options for flights from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS).
What is the earliest flight from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS)?
San Antonio Intl. Airport (SAT)’s earliest flight to Logan Intl. Airport (BOS) is at approximately 12:22PM UTC-6. With a flight time of 3h 58m, you’ll touch down at around 5:20PM UTC-5.
How long does it take to fly from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS)?
Flights from SAT to BOS have an average travel time of 3 hours and 58 minutes. The total distance between the two airports is 1,750 mi.
What is the best time to fly from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS)?
To avoid potential delays on the San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Boston from San Antonio Intl. Airport (SAT)?
Compare your flight options from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS). This is the only Boston airport you can land at if you’re taking a direct flight.
Is it cheaper to buy a plane ticket from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS) last-minute?
Booking your ticket from SAT to BOS shortly before your getaway is usually more expensive. However, if there’s some wiggle room with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a SAT to BOS flight and hotel package?
Compared with arranging hotels and flights separately, booking a SAT to BOS flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the stress out of planning your trip. Just pick your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from San Antonio Intl. Airport (SAT) to Logan Intl. Airport (BOS)?
In most cases, you can cancel or modify your SAT to BOS flight. However, there may be additional fees, especially if you booked over 24 hours ago. Double-check your itinerary for the airline’s fees and guidelines on flight changes, or if you need further information, go to our Customer Service portal.

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*Available to One Key members.