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San Antonio

$61+ Cheap flights from Boston to San Antonio (BOS - SAT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
1 adult, Economy
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Find cheap flights from Boston to San Antonio with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Boston Logan Intl to San Antonio are usually found in July or June, booked 56 days in advance, depart on a Friday or Tuesday and return on a Saturday

Cheap flight deals from Boston to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 15, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$256
(Kiwi.com)

One-way from

$61
(Cheapflightsfares)

Popular in

October

Cheapest in

July

Average price

$365

Good round-trip deal

$333 or less

Good one-way deal

$218 or less
Provider with most accurate pricing for Boston Logan Intl-San Antonio flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-San Antonio flights.
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From Boston Logan Intl to San Antonio
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One-way flight from Boston Logan Intl to San Antonio
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Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Boston Logan Intl to San Antonio.
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Price to beat on a one-way flight from Boston Logan Intl to San Antonio.
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Find flight deals from Boston to San Antonio

Cheapest flights from Boston to San Antonio
Explore the most affordable flight options available from Boston to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 15, 2026.

This CheapOair deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/34:22 pm
BOS
-
SAT
1 stop8h 37m
Spirit Airlines
jue. 3/56:00 am
SAT
-
BOS
2 stops16h 44m
Spirit Airlines
Deal found 1/13$254
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/612:56 pm
BOS
-
SAT
2 stops21h 10m
Frontier
lun. 3/93:26 pm
SAT
-
BOS
1 stop19h 15m
Frontier
Deal found 1/14$256
This Kiwi.com deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/612:56 pm
BOS
-
SAT
2 stops21h 10m
Multiple Airlines
mié. 3/1110:26 am
SAT
-
BOS
1 stop12h 18m
Multiple Airlines
Deal found 1/15$261
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/64:22 pm
BOS
-
SAT
1 stop8h 37m
Multiple Airlines
mar. 3/106:45 am
SAT
-
BOS
2 stops27h 56m
Multiple Airlines
Deal found 1/14$262
This Cheapflightsfares deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/94:22 pm
BOS
-
SAT
1 stop8h 37m
Spirit Airlines
mié. 3/1110:26 am
SAT
-
BOS
1 stop12h 18m
Spirit Airlines
Deal found 1/14$263
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/66:00 am
BOS
-
SAT
1 stop9h 41m
Frontier
mar. 3/106:45 am
SAT
-
BOS
2 stops27h 56m
Frontier
Deal found 1/13$264
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/295:40 am
BOS
-
SAT
1 stop28h 50m
Spirit Airlines
sáb. 5/210:26 am
SAT
-
BOS
1 stop12h 33m
Spirit Airlines
Deal found 1/14$266
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/276:00 am
BOS
-
SAT
2 stops18h 59m
Multiple Airlines
lun. 3/93:26 pm
SAT
-
BOS
1 stop19h 15m
Multiple Airlines
Deal found 1/14$267
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/205:49 pm
BOS
-
SAT
1 stop16h 43m
Spirit Airlines
mar. 3/2410:27 am
SAT
-
BOS
1 stop12h 32m
Spirit Airlines
Deal found 1/14$268
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 1/285:34 am
BOS
-
SAT
1 stop29h 06m
Multiple Airlines
sáb. 1/3110:35 am
SAT
-
BOS
2 stops13h 38m
Multiple Airlines
Deal found 1/14$269

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 15, 2026.
Use the filters below to find and compare flights from Boston to San Antonio that are best for you.

Fly from

Boston

Fly to

San Antonio

Route

Depart

Return

Price

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

vie. 2/20

11:46 am-3:45 pm

Nonstop4h 59m

San Antonio

mar. 2/24

12:18 pm-5:10 pm

Nonstop3h 52m

$299

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

mié. 3/18

10:45 am-2:31 pm

Nonstop4h 46m

San Antonio

mar. 3/24

12:22 pm-5:22 pm

Nonstop4h 00m

$299

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

lun. 3/9

10:45 am-2:31 pm

Nonstop4h 46m

San Antonio

lun. 3/16

4:29 pm-1:13 am

1 stop7h 44m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

mié. 3/11

10:45 am-2:31 pm

Nonstop4h 46m

San Antonio

mar. 3/17

6:13 am-12:48 pm

1 stop5h 35m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

mié. 2/4

5:30 am-11:25 am

1 stop6h 55m

San Antonio

mié. 2/4

3:10 pm-9:45 pm

1 stop5h 35m

$319

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

mié. 2/11

11:46 am-3:45 pm

Nonstop4h 59m

San Antonio

dom. 2/15

12:18 pm-5:10 pm

Nonstop3h 52m

$319

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

mié. 4/8

10:45 am-2:31 pm

Nonstop4h 46m

San Antonio

sáb. 4/11

12:22 pm-5:22 pm

Nonstop4h 00m

$319

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

sáb. 2/21

7:00 am-11:10 am

Nonstop5h 10m

San Antonio

vie. 2/27

12:18 pm-5:10 pm

Nonstop3h 52m

$319

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

mar. 3/24

8:55 am-4:50 pm

2 stops8h 55m

San Antonio

jue. 3/26

5:25 am-12:05 pm

1 stop5h 40m

$324

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

mié. 2/4

5:34 am-11:52 pm

2 stops19h 18m

$82

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Boston to San Antonio

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to San Antonio in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-San Antonio flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Boston-San Antonio flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Boston-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-San Antonio flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to San Antonio

How far ahead should I book a flight from Boston to San Antonio?

Use this chart to determine the optimal time to book a round-trip flight from Boston to San Antonio. Price data was last updated on January 9, 2026.

The best time to book flights from Boston to San Antonio is 56 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Boston to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Boston to San Antonio (average of $129). Flying from Boston to San Antonio in May is currently the most expensive (average of $227). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to SAT?

Find hourly flight availability from Boston to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 15, 2026.

When flying from Boston to San Antonio, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated enero 15, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Boston to San Antonio to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,258 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,258 reviews
Southwest
8.0
Very good
4,258 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,051 reviews
Southwest
8.0
Very good
4,258 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,164 reviews
Southwest
8.0
Very good
4,258 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,136 reviews
Southwest
8.0
Very good
4,258 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,322 reviews
Southwest
8.0
Very good
4,258 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Boston to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Boston to San Antonio?

    If you wish to fly to San Antonio from Boston, then you need to book flights from Boston Logan Intl to San Antonio. There is 1 flight from Logan Intl (BOS) to San Antonio (SAT) per day to choose from. Flights to San Antonio from Logan Intl are available from 7 different airlines, which means you should have some options if you want to compare airfare deals. 4h 37m is how long a nonstop flight from Boston to San Antonio typically takes.

  • How long is the flight from Boston to San Antonio?

    There are many flights that can get you from Boston to San Antonio in 4h 59m. Fly via Delta to get the fastest option. The distance from Boston to San Antonio is about 1761 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Boston to San Antonio round-trip?

    Flying on Frontier is currently your cheapest option to San Antonio, with prices starting at $102. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and JetBlue, with the lowest prices starting at $160 and $227, respectively. These flights start at 73% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Boston to San Antonio one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $77. However, be on the lookout for offers from Frontier and American Airlines, as they are both options that can get you from Boston to San Antonio for a low price.

  • What are the cheapest flights from Boston to San Antonio?

    Looking for the cheapest flight from Boston to San Antonio? While on average our users pay $343, our data indicates the cheapest price to be $178. The most popular route (Boston Logan Intl - San Antonio), is priced around $148.

  • Can I find deals for flights from Boston to San Antonio that include hotel bookings?

    Yes. In addition to deals on Boston to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to San Antonio.

  • Can I find deals for business class flights from Boston to San Antonio?

    Yes. Cheapflights offers flight deals from Boston to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Boston to San Antonio (average of $129). Flying from Boston to San Antonio in May is currently the most expensive (average of $227). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

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Alternative routes for Boston to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Boston to San Antonio

Discover the top 7 airlines that operate flights from Boston to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$268FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$160Average$231FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$227Average$227FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$237Average$414FlexibilityNo cancel feeOn-time63%
DeltaCheapest$239Average$390FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$254Average$481FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$378FlexibilityNo cancel feeOn-time71%

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