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Cheap flights from San Antonio to Boston from $75

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Boston departing on 2/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Antonio to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:04 pm - 1:13 am
SAT
-
BOS
7h 09m
1 stop
Frontier Logo
6:00 am - 4:20 pm
BOS
-
SAT
11h 20m
1 stop
$150Frontier
Fri, Feb 27 - Mon, Mar 2
Spirit Airlines Logo
10:26 am - 7:27 pm
SAT
-
BOS
8h 01m
1 stop
Spirit Airlines Logo
4:22 pm - 11:59 pm
BOS
-
SAT
8h 37m
1 stop
$175Spirit Airlines
Sat, Feb 14 - Wed, Feb 18
Frontier Logo
1:57 pm - 9:06 am
SAT
-
BOS
18h 09m
1 stop
Frontier Logo
6:00 am - 5:15 pm
BOS
-
SAT
36h 15m
2 stops
$182Frontier
Sat, Feb 14 - Tue, Feb 24
Spirit Airlines Logo
10:26 am - 11:44 pm
SAT
-
BOS
12h 18m
1 stop
Spirit Airlines Logo
5:50 pm - 9:30 am
BOS
-
SAT
16h 40m
1 stop
$184Spirit Airlines
Sat, Feb 14 - Tue, Feb 24
Multiple Airlines Logo
10:26 am - 11:44 pm
SAT
-
BOS
12h 18m
1 stop
Multiple Airlines Logo
6:00 am - 4:19 pm
BOS
-
SAT
11h 19m
1 stop
$193Multiple Airlines
Wed, Feb 25 - Sun, Mar 1
Frontier Logo
6:12 pm - 1:13 am
SAT
-
BOS
30h 01m
2 stops
Frontier Logo
6:00 am - 4:19 pm
BOS
-
SAT
11h 19m
1 stop
$195Frontier
Wed, Feb 25 - Sun, Mar 1
Spirit Airlines Logo
10:26 am - 11:44 pm
SAT
-
BOS
12h 18m
1 stop
Spirit Airlines Logo
2:23 pm - 11:59 pm
BOS
-
SAT
10h 36m
1 stop
$196Spirit Airlines
Sat, Feb 14 - Sat, Feb 21
Spirit Airlines Logo
10:26 am - 11:44 pm
SAT
-
BOS
12h 18m
1 stop
Spirit Airlines Logo
4:22 pm - 11:59 pm
BOS
-
SAT
8h 37m
1 stop
$201Spirit Airlines
Tue, Mar 3 - Thu, Mar 5
Multiple Airlines Logo
5:04 pm - 1:13 am
SAT
-
BOS
7h 09m
1 stop
Multiple Airlines Logo
6:00 am - 9:30 am
BOS
-
SAT
28h 30m
2 stops
$203Multiple Airlines
Fri, Feb 27 - Mon, Mar 2
Multiple Airlines Logo
10:26 am - 11:44 pm
SAT
-
BOS
12h 18m
1 stop
Multiple Airlines Logo
6:00 am - 4:20 pm
BOS
-
SAT
11h 20m
1 stop
$204Multiple Airlines
Thu, Feb 26 - Mon, Mar 2

Spirit Airlines flights from San Antonio to Boston

Our best Spirit Airlines deals on San Antonio to Boston flight tickets
Spirit Airlines
Feb 14
SAT10:26 amSan Antonio
8h 01m
1 stop
BOS7:27 pmBoston Logan Intl
Feb 18
BOS4:22 pmBoston Logan Intl
8h 37m
1 stop
SAT11:59 pmSan Antonio
$175
Spirit Airlines
Feb 14
SAT10:26 amSan Antonio
12h 18m
1 stop
BOS11:44 pmBoston Logan Intl
Feb 24
BOS5:50 pmBoston Logan Intl
16h 40m
1 stop
SAT9:30 amSan Antonio
$184
Spirit Airlines
Feb 14
SAT10:26 amSan Antonio
12h 18m
1 stop
BOS11:44 pmBoston Logan Intl
Feb 21
BOS2:23 pmBoston Logan Intl
10h 36m
1 stop
SAT11:59 pmSan Antonio
$196

Frontier flights from San Antonio to Boston

Our best Frontier deals on San Antonio to Boston flight tickets
Frontier
Feb 27
SAT5:04 pmSan Antonio
7h 09m
1 stop
BOS1:13 amBoston Logan Intl
Mar 2
BOS6:00 amBoston Logan Intl
11h 20m
1 stop
SAT4:20 pmSan Antonio
$150
Frontier
Feb 14
SAT1:57 pmSan Antonio
18h 09m
1 stop
BOS9:06 amBoston Logan Intl
Feb 24
BOS6:00 amBoston Logan Intl
36h 15m
2 stops
SAT5:15 pmSan Antonio
$182
Frontier
Feb 25
SAT6:12 pmSan Antonio
30h 01m
2 stops
BOS1:13 amBoston Logan Intl
Mar 1
BOS6:00 amBoston Logan Intl
11h 19m
1 stop
SAT4:19 pmSan Antonio
$195

momondo 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, momondo users made 832,500 searches. Data last updated January 24, 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

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 2/27

5:04 pm-1:13 am

1 stop7h 09m

Boston Logan Intl

Mon 3/2

6:00 am-4:20 pm

1 stop11h 20m

$150

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sat 2/14

10:26 am-7:27 pm

1 stop8h 01m

Boston Logan Intl

Wed 2/18

4:22 pm-11:59 pm

1 stop8h 37m

$175

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sat 2/14

1:57 pm-9:06 am

1 stop18h 09m

Boston Logan Intl

Tue 2/24

6:00 am-5:15 pm

2 stops36h 15m

$182

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sat 2/14

10:26 am-11:44 pm

1 stop12h 18m

Boston Logan Intl

Tue 2/24

5:50 pm-9:30 am

1 stop16h 40m

$184

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 2/25

10:26 am-11:44 pm

1 stop12h 18m

Boston Logan Intl

Sun 3/1

6:00 am-4:19 pm

1 stop11h 19m

$193

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 2/25

6:12 pm-1:13 am

2 stops30h 01m

Boston Logan Intl

Sun 3/1

6:00 am-4:19 pm

1 stop11h 19m

$195

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sat 2/14

10:26 am-11:44 pm

1 stop12h 18m

Boston Logan Intl

Sat 2/21

2:23 pm-11:59 pm

1 stop10h 36m

$196

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Tue 3/3

10:26 am-11:44 pm

1 stop12h 18m

Boston Logan Intl

Thu 3/5

4:22 pm-11:59 pm

1 stop8h 37m

$201

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 2/27

5:04 pm-1:13 am

1 stop7h 09m

Boston Logan Intl

Mon 3/2

6:00 am-9:30 am

2 stops28h 30m

$203

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Thu 2/26

10:26 am-11:44 pm

1 stop12h 18m

Boston Logan Intl

Mon 3/2

6:00 am-4:20 pm

1 stop11h 20m

$204

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from San Antonio to Boston

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Boston?

In general, August is the cheapest month to fly from San Antonio to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $299. If you aren’t able to travel during the month of August, then book flights to Boston from San Antonio during September instead. Flights to Boston in September, while not as cheap as those in August, still average around $313.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from San Antonio to Boston is on a Saturday when prices can be found for as low as $356. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $538.

What is the cheapest time of day to depart on your flight to Boston?

According to our data, the cheapest time of day to fly to Boston is at noon. momondo users have found flights departing from San Antonio to Boston at noon for as low as $379. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $548 per ticket.

What is the cheapest San Antonio to Boston Logan Intl flight route?

Fly from San Antonio to Boston Logan Intl for the best San Antonio - Boston Logan Intl flight prices

How far in advance should I book a flight to Boston?

You are more likely to see cheaper flights to Boston from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $365 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from San Antonio for as low as $295 on momondo.

What cabin class options are available on San Antonio to Boston Logan Intl flights?

There are 4 cabin classes available to choose from on San Antonio to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Antonio to Boston flights?

You could potentially save up to 46% on your flight if you consider stops on a San Antonio to Boston flight.

How have San Antonio to Boston flight prices changed over time?

As of January 2026, prices for San Antonio to Boston flights are approximately 62% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to Boston (SAT to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Boston

Best Price Found

$238

Fastest flight time

3h 52m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from San Antonio in the past 72 hours is $238. The best round-trip flight deal from San Antonio to Boston found on momondo in the last 72 hours is $348.
The fastest flight from San Antonio to Boston takes 3h 52m
Direct flights go from San Antonio to Boston every day.
There is 1 airport in Boston. From San Antonio there are direct flights to Boston Logan Intl (BOS).
Search flight deals

  • How far is San Antonio to Boston Logan Intl by plane?

    San Antonio and Boston Logan Intl are 1763.9 mi apart from one another. Typically, this will take 3h 52m by plane in normal conditions.

  • When did momondo last update prices for flights from San Antonio Airport to Boston Logan Intl Airport?

    Prices for flights from San Antonio Airport to Boston Logan Intl Airport refresh daily.

  • How many operators does momondo search for flights from San Antonio Airport to Boston Logan Intl Airport?

  • How old do you have to be to fly from San Antonio Airport to Boston Logan Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Antonio Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents you'll need for your trip to Boston Logan Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Boston Logan Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Antonio to Boston?

  • What is the most popular airline from San Antonio to Boston?

Best airlines flying from San Antonio to Boston

Compare and see reviews for airlines that fly from San Antonio to Boston with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $169Free CancellationRating
6.3
8,370 reviews
Search Spirit Airlines flights
DeltaPriceFrom $239Free CancellationRating
7.9
8,110 reviews
Search Delta flights
SouthwestPriceFrom $258Free CancellationRating
8.0
4,268 reviews
Search Southwest flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,192 reviews
Search American Airlines flights
United AirlinesPriceFrom $278Free CancellationRating
7.4
9,194 reviews
Search United Airlines flights

  • Delta Flights From San Antonio to Boston

    The lowest priced Delta flight from San Antonio to Boston from the last 72 hours was $239. Generally, Delta has 4 flights on this route every week with an average price of $347. Delta is rated 7.9/10 by our users.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Plymouth
Kennebunkport
South Yarmouth
Cambridge
Narragansett
Gloucester
Falmouth
Nashua
Laconia
Brockton
Sturbridge
Chatham
Concord
Everett

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Boston?

It is quick and easy to find San Antonio to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.

Can I find flights from San Antonio to Boston with flexible booking policies on momondo?

momondo does allow users to show only those flights to Boston from San Antonio which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from San Antonio to Boston?

momondo helps you find the best flight between San Antonio and Boston by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from San Antonio to Boston right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Boston from San Antonio. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Boston trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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