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$71+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Boston Logan Intl to San Antonio are usually found in January or July, booked 77 days in advance, depart on a Tuesday or Friday and return on a Thursday

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 November 6, 2025.

This Delta deal was found by Cheapflights users on 11/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/511:25 amBOS - SAT
1 stop6h 55mDelta
Thu 12/112:15 pmSAT - BOS
Nonstop4h 03mDelta
Deal found 11/5$309
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:00 amBOS - SAT
2 stops8h 12mUnited Airlines
Sun 12/77:47 amSAT - BOS
1 stop6h 12mUnited Airlines
Deal found 11/3$310
This Mytrip deal was found by Cheapflights users on 11/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:45 amBOS - SAT
1 stop13h 47mSpirit Airlines
Sat 12/67:00 amSAT - BOS
3 stops26h 03mSpirit Airlines
Deal found 11/5$311
This American Airlines deal was found by Cheapflights users on 11/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:08 pmBOS - SAT
1 stop9h 27mAmerican Airlines
Tue 12/911:28 amSAT - BOS
1 stop9h 05mAmerican Airlines
Deal found 11/5$312
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Sat 11/229:54 pmBOS - SAT
2 stops21h 50mMultiple Airlines
Fri 11/285:09 pmSAT - BOS
1 stop6h 35mMultiple Airlines
Deal found 11/5$313
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:08 amBOS - SAT
2 stops13h 18mSpirit Airlines
Fri 12/121:55 pmSAT - BOS
3 stops28h 11mSpirit Airlines
Deal found 11/4$314
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Mon 11/2410:59 amBOS - SAT
1 stop30h 00mMultiple Airlines
Fri 11/285:09 pmSAT - BOS
1 stop6h 35mMultiple Airlines
Deal found 11/4$315
This Mytrip deal was found by Cheapflights users on 11/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/219:54 pmBOS - SAT
2 stops21h 38mSpirit Airlines
Thu 12/115:40 amSAT - BOS
3 stops27h 23mSpirit Airlines
Deal found 11/5$316
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Sat 11/159:23 amBOS - SAT
1 stop8h 47mMultiple Airlines
Tue 11/187:37 pmSAT - BOS
1 stop27h 22mMultiple Airlines
Deal found 11/4$318
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Sat 11/159:23 amBOS - SAT
1 stop8h 47mFrontier
Thu 11/207:38 pmSAT - BOS
2 stops28h 06mFrontier
Deal found 11/4$320
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/29:54 pmBOS - SAT
3 stops22h 27mSpirit Airlines
Fri 12/121:55 pmSAT - BOS
3 stops28h 11mSpirit Airlines
Deal found 11/4$321

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 November 6, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$307
(Kiwi.com)

One-way from

$71
(Priceline)

Popular in

December

Cheapest in

January

Average price

$395

Good round-trip deal

$388 or less

Good one-way deal

$233 or less
Provider with most accurate pricing for Boston Logan Intl-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-San Antonio flights.
Search Deals
From Boston Logan Intl to San Antonio
Search Deals
One-way flight from Boston Logan Intl to San Antonio
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to San Antonio.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to San Antonio.
Search Deals

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 November 6, 2025.
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

Tue 1/27

5:50 am-12:13 pm

1 stop7h 23m

San Antonio

Mon 2/2

12:25 pm-5:19 pm

Nonstop3h 54m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Tue 1/13

4:16 pm-11:13 pm

1 stop7h 57m

San Antonio

Thu 1/22

7:06 am-3:15 pm

1 stop7h 09m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Wed 12/3

9:20 am-1:17 pm

Nonstop4h 57m

San Antonio

Sun 12/7

5:10 am-2:27 pm

1 stop8h 17m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Tue 1/6

4:16 pm-11:13 pm

1 stop7h 57m

San Antonio

Sat 1/10

2:05 pm-9:49 pm

1 stop6h 44m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Fri 1/23

11:46 am-3:47 pm

Nonstop5h 01m

San Antonio

Sat 1/31

5:20 am-2:20 pm

1 stop8h 00m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Sun 1/25

11:46 am-3:47 pm

Nonstop5h 01m

San Antonio

Sat 1/31

6:30 am-2:20 pm

1 stop6h 50m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Tue 2/3

11:46 am-3:47 pm

Nonstop5h 01m

San Antonio

Sun 2/8

6:19 pm-1:04 am

1 stop5h 45m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Fri 1/23

3:30 pm-10:30 pm

1 stop8h 00m

San Antonio

Mon 1/26

12:25 pm-5:19 pm

Nonstop3h 54m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Fri 12/12

9:20 am-1:17 pm

Nonstop4h 57m

San Antonio

Sun 12/14

5:10 am-12:30 pm

1 stop6h 20m

$309

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Thu 1/29

6:45 pm-12:41 am

1 stop6h 56m

San Antonio

Mon 2/2

12:25 pm-5:19 pm

Nonstop3h 54m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars

*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 October 31, 2025.

The best time to book flights from Boston to San Antonio is 77 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 $228). 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 November 6, 2025.

When flying from Boston to San Antonio, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 26% versus a flight in the morning.

What is the cheapest day to fly from Boston to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from Boston to San Antonio. Price data was last updated on November 2, 2025.

Travelers seeking maximum savings on their Boston to San Antonio flight should consider departing on Wednesday at noon when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 November 6, 2025.
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
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,001 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,007 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,040 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,122 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

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

    There are many flights that can get you from Boston to San Antonio in 7h 23m. Fly via Delta or United Airlines to get the fastest option. The distance from Boston to San Antonio is about 1761 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on Spirit Airlines is currently your cheapest option to San Antonio, with prices starting at $160. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $239 and $242, respectively. These flights start at 57% lower than the current average price 3 months from now.

  • 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 $376, our data indicates the cheapest price to be $188. The most popular route (Boston Logan Intl - San Antonio), is priced around $159.

  • 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 $228). 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

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Top 5 airlines flying from Boston to San Antonio

Discover the top 5 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$160Average$261FlexibilityNo cancel feeOn-time65%
DeltaCheapest$239Average$392FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$242Average$386FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$246Average$422FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$274Average$488FlexibilityNo cancel feeOn-time69%

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