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$137+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Boston Logan Intl to San Antonio are usually found in August or September, booked 43 days in advance, depart on a Tuesday or Friday 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$283
(CheapOair)

One-way from

$137
(Mytrip)

Popular in

December

Cheapest in

August

Average price

$373

Good round-trip deal

$319 or less

Good one-way deal

$198 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. 7% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 February 20, 2025.

This CheapOair deal was found by Cheapflights users on 2/20. 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.
Thu 3/2011:14 amBOS - SAT
1 stop23h 49mSpirit Airlines
Thu 3/275:20 pmSAT - BOS
2 stops39h 09mSpirit Airlines
Deal found 2/20$283
This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/16:00 amBOS - SAT
1 stop14h 14mMultiple Airlines
Sat 3/812:05 pmSAT - BOS
1 stop10h 44mMultiple Airlines
Deal found 2/20$287
This Delta deal was found by Cheapflights users on 2/20. 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.
Thu 3/205:32 pmBOS - SAT
1 stop8h 05mDelta
Thu 3/2712:20 pmSAT - BOS
Nonstop3h 55mDelta
Deal found 2/20$289
This Southwest deal was found by Cheapflights users on 2/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/245:40 pmBOS - SAT
1 stop6h 35mSouthwest
Tue 3/2511:25 amSAT - BOS
2 stops7h 20mSouthwest
Deal found 2/19$294
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Sat 4/57:15 amBOS - SAT
1 stop9h 18mUnited Airlines
Wed 4/97:00 amSAT - BOS
1 stop9h 22mUnited Airlines
Deal found 2/20$350
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Fri 3/215:26 amBOS - SAT
1 stop7h 23mAmerican Airlines
Sun 3/235:00 amSAT - BOS
1 stop5h 40mAmerican Airlines
Deal found 2/20$358
This CheapOair deal was found by Cheapflights users on 2/20. 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.
Sun 2/236:00 amBOS - SAT
1 stop13h 50mFrontier
Thu 2/277:50 pmSAT - BOS
1 stop27h 54mFrontier
Deal found 2/20$366
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/15:30 pmBOS - SAT
1 stop13h 10mAlaska Airlines
Sun 4/67:00 amSAT - BOS
1 stop23h 52mAlaska Airlines
Deal found 2/20$392

Find flights from Boston to San Antonio within your budget

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 February 20, 2025.

Fly from

Boston

Fly to

San Antonio

Route

Depart

Return

Price

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Thu 3/20

11:14 am-10:03 am

1 stop23h 49m

San Antonio

Thu 3/27

5:20 pm-9:29 am

2 stops39h 09m

$283

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Thu 3/20

5:32 pm-12:37 am

1 stop8h 05m

San Antonio

Thu 3/27

12:20 pm-5:15 pm

Nonstop3h 55m

$289

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Mon 3/24

5:40 pm-11:15 pm

1 stop6h 35m

San Antonio

Tue 3/25

11:25 am-7:45 pm

2 stops7h 20m

$294

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Sat 4/5

7:15 am-3:33 pm

1 stop9h 18m

San Antonio

Wed 4/9

7:00 am-5:22 pm

1 stop9h 22m

$350

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Fri 3/21

5:26 am-11:49 am

1 stop7h 23m

San Antonio

Sun 3/23

5:00 am-11:40 am

1 stop5h 40m

$358

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Fri 3/21

5:30 pm-5:40 am

1 stop13h 10m

San Antonio

Sun 3/23

8:37 pm-10:43 am

1 stop13h 06m

$387

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Tue 4/1

5:30 pm-5:40 am

1 stop13h 10m

San Antonio

Sun 4/6

7:00 am-7:52 am

1 stop23h 52m

$392

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Wed 5/21

6:00 am-11:25 pm

3 stops18h 25m

$137

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Mon 4/7

5:35 am-12:55 pm

2 stops8h 20m

$165

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Tue 3/18

12:50 pm-4:40 pm

Nonstop4h 50m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 14 results
1
2

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
FareScanPrice Accuracy-Trust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-San Antonio flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Travel insights for flights from Boston to San Antonio

Get recent, data-driven insights about flights from Boston to San Antonio including ideal travel times, pricing trends, and more.

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 February 14, 2025.

The best time to book flights from Boston to San Antonio is 43 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 $295). Flying from Boston to San Antonio in March is currently the most expensive (average of $376). 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 February 20, 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 24% versus a flight in the evening.

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 February 16, 2025.

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

Rainfall in San Antonio by month

Plan your trip to San Antonio by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

Temperature in San Antonio by month

Plan your trip to San Antonio by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Antonio, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 February 20, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Boston to San Antonio have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 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 $283. Additional round-trip tickets that might be worth considering are offered by Delta and Southwest, with the lowest prices starting at $289 and $294, respectively. These flights start at 19% 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 $137. However, be on the lookout for offers from Southwest and Delta, as they are both options that can get you from Boston to San Antonio for a low price.

  • What are the most reliable airlines from Boston to San Antonio?

    Consider Delta (88%), KLM (83%) or ITA Airways (83%) when booking your flight. These represent the most reliable airlines when flying from Boston to San Antonio.

  • 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 $468, our data indicates the cheapest price to be $178. The most popular route (Boston Logan Intl - San Antonio), is priced around $160.

  • Where are the most common layover locations when flying from Boston to San Antonio?

    Flights departing from Boston and landing in San Antonio layover in Charlotte most frequently.

  • What are some popular things to do or see while on a layover in Charlotte?

    The majority of Charlotte visitors spend their time at Carowind, Mint Museum Uptown, and North Carolina Blumenthal Performing Arts Center. Travelers on a layover in Charlotte can visit Carowind, Mint Museum Uptown, and North Carolina Blumenthal Performing Arts Center, by traveling 8.2 mi, 5.4 mi, and 5.8 mi, respectively after landing at Charlotte Douglas. Those landing in Charlotte looking to spend some time exploring during their layover can rent a car for about $44 per day.

  • Where are the least popular layover locations for Boston to San Antonio flights?

    Boston to San Antonio flights that have layovers will least frequently stop in Dallas.

  • 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 $295). Flying from Boston to San Antonio in March is currently the most expensive (average of $376). 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.

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Top 6 airlines flying from Boston to San Antonio

Discover the top 6 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$258FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$196Average$358FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$205Average$316FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$206Average$367FlexibilityNo cancel feeOn-time69%
DeltaCheapest$239Average$382FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$257Average$417FlexibilityNo cancel feeOn-time63%
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