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$97+ Cheap flights from San Antonio to Boston (SAT - BOS)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — BOS
May 9 — May 161
Sat 5/9
Sat 5/16
1 adult, Economy
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Find cheap flights from San Antonio to Boston 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

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3. Compare prices and book

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Cheapflights Tip: The best prices from San Antonio to Boston Logan Intl are usually found in August or September, booked 70 days in advance, depart on a Saturday or Thursday and return on a Saturday

Cheap flight deals from San Antonio to Boston

Cheapest flights from San Antonio to Boston
Explore the most affordable flight options available from San Antonio to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/7. 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 4/201:51 pm
SAT
-
BOS
1 stop19h 38m
Multiple Airlines
Wed 5/69:34 am
BOS
-
SAT
2 stops34h 25m
Multiple Airlines
Deal found 4/7$249
This Kiwi.com deal was found by Cheapflights users on 4/7. 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 4/201:51 pm
SAT
-
BOS
1 stop19h 38m
Multiple Airlines
Tue 5/56:00 am
BOS
-
SAT
2 stops13h 59m
Multiple Airlines
Deal found 4/7$253
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 4/202:12 pm
SAT
-
BOS
1 stop19h 17m
Spirit Airlines
Thu 5/75:45 am
BOS
-
SAT
1 stop11h 31m
Spirit Airlines
Deal found 4/6$254
This Frontier deal was found by Cheapflights users on 4/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:00 pm
SAT
-
BOS
1 stop6h 26m
Frontier
Mon 4/135:20 am
BOS
-
SAT
1 stop12h 45m
Frontier
Deal found 4/6$260
This Kiwi.com deal was found by Cheapflights users on 4/7. 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.
Tue 5/57:54 pm
SAT
-
BOS
2 stops28h 30m
Multiple Airlines
Thu 5/75:45 am
BOS
-
SAT
1 stop11h 31m
Multiple Airlines
Deal found 4/7$274
This Kiwi.com deal was found by Cheapflights users on 4/7. 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 4/201:51 pm
SAT
-
BOS
1 stop19h 38m
Multiple Airlines
Sat 5/25:55 am
BOS
-
SAT
1 stop18h 56m
Multiple Airlines
Deal found 4/7$278
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 4/202:12 pm
SAT
-
BOS
1 stop19h 17m
Spirit Airlines
Fri 5/15:55 am
BOS
-
SAT
1 stop18h 56m
Spirit Airlines
Deal found 4/6$282
This Kiwi.com deal was found by Cheapflights users on 4/6. 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.
Thu 6/49:55 am
SAT
-
BOS
1 stop24h 11m
Multiple Airlines
Tue 6/99:12 am
BOS
-
SAT
2 stops34h 44m
Multiple Airlines
Deal found 4/6$289
This Travelocity deal was found by Cheapflights users on 4/7. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/201:51 pm
SAT
-
BOS
1 stop19h 30m
Multiple Airlines
Mon 5/45:45 am
BOS
-
SAT
1 stop11h 31m
Multiple Airlines
Deal found 4/7$290
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/43:00 pm
SAT
-
BOS
2 stops33h 24m
Multiple Airlines
Mon 5/115:45 am
BOS
-
SAT
1 stop11h 31m
Multiple Airlines
Deal found 4/4$292

Find flight deals from San Antonio to Boston

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Boston (BOS). 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 April 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$249
(Kiwi.com)

One-way from

$97
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$487

Good round-trip deal

$428 or less

Good one-way deal

$283 or less
Provider with most accurate pricing for San Antonio-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-Boston Logan Intl flights.
Search Deals
From San Antonio to Boston Logan Intl
Search Deals
One-way flight from San Antonio to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from San Antonio to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from San Antonio to Boston Logan Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to Boston 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 April 9, 2026.
Use the filters below to find and compare flights from San Antonio to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 5/13

2:35 pm-11:54 pm

1 stop8h 19m

Boston Logan Intl

Sat 5/23

10:30 am-2:03 pm

Nonstop4h 33m

$349

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 5/29

1:33 pm-11:37 pm

1 stop9h 04m

Boston Logan Intl

Mon 6/1

8:30 am-12:10 pm

Nonstop4h 40m

$369

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 5/13

1:40 pm-10:30 pm

2 stops7h 50m

Boston Logan Intl

Sat 5/23

12:50 pm-8:40 pm

1 stop8h 50m

$373

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sat 5/9

4:15 pm-11:29 pm

1 stop6h 14m

Boston Logan Intl

Sun 5/17

5:51 am-11:45 am

1 stop6h 54m

$379

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Thu 6/11

3:45 pm-12:05 am

2 stops7h 20m

Boston Logan Intl

Mon 6/15

5:35 am-10:15 am

1 stop5h 40m

$384

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 6/3

3:45 pm-10:40 pm

1 stop5h 55m

Boston Logan Intl

Sun 6/7

5:30 am-10:45 am

1 stop6h 15m

$398

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Tue 6/2

1:06 pm-6:25 pm

Nonstop4h 19m

Boston Logan Intl

Tue 6/9

5:30 am-11:10 am

1 stop6h 40m

$398

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 7/10

4:12 pm-1:20 am

1 stop8h 08m

Boston Logan Intl

Sun 7/12

5:30 am-1:16 pm

1 stop8h 46m

$408

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Mon 6/8

2:29 pm-10:22 pm

1 stop6h 53m

Boston Logan Intl

Sat 6/13

9:00 am-12:25 pm

Nonstop4h 25m

$418
Quickest round-trip

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Tue 4/28

1:42 pm-6:53 pm

Nonstop4h 11m

Boston Logan Intl

Tue 5/19

8:30 am-12:10 pm

Nonstop4h 40m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/5

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from San Antonio to Boston

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 San Antonio to Boston in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust 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 San Antonio-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-Boston 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 San Antonio-Boston 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 San Antonio to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from San Antonio 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 San Antonio to Boston

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

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Boston. Price data was last updated on April 3, 2026.

The best time to book flights from San Antonio to Boston is 70 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 San Antonio to Boston?

Currently, April is the cheapest month in which you can book a flight from San Antonio to Boston (average of $117). Flying from San Antonio to Boston in March is currently the most expensive (average of $180). 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 SAT to BOS?

Find hourly flight availability from San Antonio to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 9, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 42% on flights from San Antonio to Boston by exploring options for tickets at noon.

How much does it cost to fly round-trip from San Antonio to Boston?

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated April 9, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from San Antonio to Boston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,338 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,392 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,555 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,561 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Spirit Airlines
6.3
Okay
8,606 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Boston. 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 San Antonio to Boston?

    You will need to book a flight from San Antonio to Boston Logan Intl if you want to fly from San Antonio to Boston. At least 6 different airlines have flights from San Antonio (SAT) to Logan Intl (BOS) on a regular basis. There are 2 flights to Boston from the San Antonio airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SAT to BOS to be around 4h 00m.

  • How popular is this San Antonio to Boston flight route?

    This flight path from San Antonio to Boston Logan Intl was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Delta and Southwest can get you from San Antonio to Boston in just under 7h 50m. Your travel time can differ by up to 29m. The distance between San Antonio and Boston 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 San Antonio to Boston round-trip?

    Currently priced at $151, Frontier will fly you from San Antonio to Boston and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and Delta - these airlines can fly you to your destination from $178 and $239, respectively. These flights start at 61% lower than the current average price 3 months from now.

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

    $88 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and American Airlines, with prices starting from $94 and $118, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Antonio to Boston on time: EL AL (80%), Air France (67%), Delta (67%).

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

    Looking for the cheapest flight from San Antonio to Boston? While on average our users pay $468, our data indicates the cheapest price to be $188. The most popular route (San Antonio - Boston Logan Intl), is priced around $295.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Antonio to Boston 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 San Antonio to Boston?

    Currently, April is the cheapest month in which you can book a flight from San Antonio to Boston (average of $117). Flying from San Antonio to Boston in March is currently the most expensive (average of $180). 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 Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Cambridge
Concord
Hampton Beach
Watertown
Brockton
Seekonk
Cranston
Chelsea
Seabrook
Warwick
Peabody
York Beach
Londonderry
Swansea
Old Orchard Beach
Lincoln
Quincy
Waltham
Lowell

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from San Antonio to Boston

Discover the top 6 airlines that operate flights from San Antonio to Boston. 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 April 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$151Average$162FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$178Average$249FlexibilityNo cancel feeOn-time65%
DeltaCheapest$239Average$367FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$381FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$265Average$400FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$282Average$419FlexibilityNo cancel feeOn-time69%

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