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Cheap flights from San Antonio to Boston from $112

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 5/12. 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.
Spirit Airlines Logo
5:09 pm - 11:38 pm
SAT
-
BOS
29h 29m
1 stop
Spirit Airlines Logo
6:00 am - 6:09 pm
BOS
-
SAT
13h 09m
1 stop
$348Spirit Airlines
Wed, Jul 8 - Tue, Jul 14
Delta Logo
6:45 am - 1:54 pm
SAT
-
BOS
6h 09m
1 stop
Delta Logo
9:15 am - 12:52 pm
BOS
-
SAT
4h 37mnonstop
$349Delta
Wed, Aug 19 - Sun, Aug 23
Multiple Airlines Logo
5:26 pm - 1:24 am
SAT
-
BOS
30h 58m
2 stops
Multiple Airlines Logo
5:45 am - 4:16 pm
BOS
-
SAT
11h 31m
1 stop
$351Multiple Airlines
Fri, May 29 - Mon, Jun 1
Multiple Airlines Logo
7:54 pm - 1:24 am
SAT
-
BOS
28h 30m
2 stops
Multiple Airlines Logo
5:45 am - 4:16 pm
BOS
-
SAT
11h 31m
1 stop
$353Multiple Airlines
Wed, May 13 - Sun, May 17
Multiple Airlines Logo
7:54 pm - 1:24 am
SAT
-
BOS
28h 30m
2 stops
Multiple Airlines Logo
5:45 am - 4:16 pm
BOS
-
SAT
11h 31m
1 stop
$354Multiple Airlines
Thu, May 14 - Mon, May 18
Multiple Airlines Logo
7:54 pm - 9:42 pm
SAT
-
BOS
24h 48m
2 stops
Multiple Airlines Logo
8:40 am - 9:15 am
BOS
-
SAT
25h 35m
1 stop
$355Multiple Airlines
Wed, Jun 3 - Sat, Jun 6
Spirit Airlines Logo
6:00 am - 11:54 pm
SAT
-
BOS
16h 54m
1 stop
Spirit Airlines Logo
12:51 pm - 11:49 pm
BOS
-
SAT
11h 58m
1 stop
$356Spirit Airlines
Thu, Aug 20 - Thu, Aug 27
Spirit Airlines Logo
5:26 pm - 9:42 pm
SAT
-
BOS
27h 16m
2 stops
Spirit Airlines Logo
5:45 am - 4:16 pm
BOS
-
SAT
11h 31m
1 stop
$357Spirit Airlines
Fri, May 22 - Mon, May 25
Multiple Airlines Logo
3:00 pm - 9:16 am
SAT
-
BOS
17h 16m
2 stops
Multiple Airlines Logo
5:45 am - 4:16 pm
BOS
-
SAT
11h 31m
1 stop
$358Multiple Airlines
Fri, May 1 - Mon, May 4
Delta Logo
6:19 pm - 1:20 am
SAT
-
BOS
6h 01m
1 stop
Delta Logo
8:16 am - 5:11 pm
BOS
-
SAT
9h 55m
1 stop
$359Delta
Fri, Jul 10 - Mon, Jul 13

Delta flights from San Antonio to Boston

Our best Delta deals on San Antonio to Boston flight tickets
Delta
Aug 19
SAT6:45 amSan Antonio
6h 09m
1 stop
BOS1:54 pmBoston Logan Intl
Aug 23
BOS9:15 amBoston Logan Intl
4h 37m
SAT12:52 pmSan Antonio
$349
Delta
Jul 10
SAT6:19 pmSan Antonio
6h 01m
1 stop
BOS1:20 amBoston Logan Intl
Jul 13
BOS8:16 amBoston Logan Intl
9h 55m
1 stop
SAT5:11 pmSan Antonio
$359
Delta
May 12
SAT1:06 pmSan Antonio
4h 19m
BOS6:25 pmBoston Logan Intl
May 23
BOS10:30 amBoston Logan Intl
4h 33m
SAT2:03 pmSan Antonio
$369

Southwest flights from San Antonio to Boston

Our best Southwest deals on San Antonio to Boston flight tickets
Southwest
Jun 15
SAT3:45 pmSan Antonio
7h 20m
2 stops
BOS12:05 amBoston Logan Intl
Jun 17
BOS6:25 pmBoston Logan Intl
6h 00m
1 stop
SAT11:25 pmSan Antonio
$364
Southwest
May 13
SAT3:45 pmSan Antonio
5h 45m
1 stop
BOS10:30 pmBoston Logan Intl
May 20
BOS5:55 pmBoston Logan Intl
6h 20m
1 stop
SAT11:15 pmSan Antonio
$367
Southwest
May 12
SAT7:00 amSan Antonio
5h 40m
1 stop
BOS1:40 pmBoston Logan Intl
May 19
BOS12:55 pmBoston Logan Intl
11h 20m
1 stop
SAT11:15 pmSan Antonio
$372

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 April 17, 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 7/8

5:09 pm-11:38 pm

1 stop29h 29m

Boston Logan Intl

Tue 7/14

6:00 am-6:09 pm

1 stop13h 09m

$348
Quickest round-trip

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 8/19

6:45 am-1:54 pm

1 stop6h 09m

Boston Logan Intl

Sun 8/23

9:15 am-12:52 pm

Nonstop4h 37m

$349

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 5/29

5:26 pm-1:24 am

2 stops30h 58m

Boston Logan Intl

Mon 6/1

5:45 am-4:16 pm

1 stop11h 31m

$351

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 5/13

7:54 pm-1:24 am

2 stops28h 30m

Boston Logan Intl

Sun 5/17

5:45 am-4:16 pm

1 stop11h 31m

$353

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Thu 5/14

7:54 pm-1:24 am

2 stops28h 30m

Boston Logan Intl

Mon 5/18

5:45 am-4:16 pm

1 stop11h 31m

$354

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 6/3

7:54 pm-9:42 pm

2 stops24h 48m

Boston Logan Intl

Sat 6/6

8:40 am-9:15 am

1 stop25h 35m

$355

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Thu 8/20

6:00 am-11:54 pm

1 stop16h 54m

Boston Logan Intl

Thu 8/27

12:51 pm-11:49 pm

1 stop11h 58m

$356

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 5/22

5:26 pm-9:42 pm

2 stops27h 16m

Boston Logan Intl

Mon 5/25

5:45 am-4:16 pm

1 stop11h 31m

$357

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 5/1

3:00 pm-9:16 am

2 stops17h 16m

Boston Logan Intl

Mon 5/4

5:45 am-4:16 pm

1 stop11h 31m

$358

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 7/10

6:19 pm-1:20 am

1 stop6h 01m

Boston Logan Intl

Mon 7/13

8:16 am-5:11 pm

1 stop9h 55m

$359

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 typical price of a round-trip flight between San Antonio and Boston?

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 $313. 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 $327.

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 Thursday when prices can be found for as low as $380. 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 $392. 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 $623 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 $394 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 $283 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?

No. A direct flight is the cheapest option for a flight between San Antonio to Boston.

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

As of April 2026, prices for San Antonio to Boston flights are approximately 8% 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

$258

Fastest flight time

4h 11m

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 $258. The best round-trip flight deal from San Antonio to Boston found on momondo in the last 72 hours is $437.
The fastest flight from San Antonio to Boston takes 4h 11m
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

Frequently asked questions about flying from San Antonio to Boston

  • 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 4h 11m 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
FrontierPriceFrom $151Free CancellationRating
5.7
2,987 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $178Free CancellationRating
6.3
8,617 reviews
Search Spirit Airlines flights
DeltaPriceFrom $239Free CancellationRating
7.9
8,409 reviews
Search Delta flights
American AirlinesPriceFrom $258Free CancellationRating
7.1
11,590 reviews
Search American Airlines flights
SouthwestPriceFrom $265Free CancellationRating
8.0
4,329 reviews
Search Southwest flights
United AirlinesPriceFrom $282Free CancellationRating
7.4
9,600 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 $370. 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
Kennebunkport
Plymouth
Cambridge
South Yarmouth
Gloucester
Narragansett
Brockton
Falmouth
Warwick
Chatham
Sturbridge
Laconia
Nashua
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.
Start using Trips
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