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Cheap flights from San Antonio to Boston from $99

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 4/13. 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.
Multiple Airlines Logo
3:00 pm - 1:24 am
SAT
-
BOS
33h 24m
2 stops
Multiple Airlines Logo
9:34 am - 8:15 am
BOS
-
SAT
23h 41m
1 stop
$291Multiple Airlines
Mon, May 4 - Wed, May 6
Multiple Airlines Logo
1:51 pm - 11:45 am
SAT
-
BOS
20h 54m
2 stops
Multiple Airlines Logo
11:16 am - 1:17 pm
BOS
-
SAT
27h 01m
1 stop
$293Multiple Airlines
Mon, Apr 20 - Sat, May 2
Multiple Airlines Logo
1:51 pm - 10:29 am
SAT
-
BOS
19h 38m
1 stop
Multiple Airlines Logo
11:06 am - 1:17 pm
BOS
-
SAT
27h 11m
1 stop
$294Multiple Airlines
Mon, Apr 20 - Fri, May 1
Multiple Airlines Logo
11:30 am - 11:06 am
SAT
-
BOS
22h 36m
2 stops
Multiple Airlines Logo
8:44 am - 9:15 am
BOS
-
SAT
25h 31m
1 stop
$298Multiple Airlines
Fri, May 29 - Wed, Jun 3
Multiple Airlines Logo
1:51 pm - 10:29 am
SAT
-
BOS
19h 38m
1 stop
Multiple Airlines Logo
12:28 pm - 5:31 pm
BOS
-
SAT
30h 03m
2 stops
$299Multiple Airlines
Mon, Apr 20 - Sun, May 3
Multiple Airlines Logo
6:00 am - 10:15 am
SAT
-
BOS
27h 15m
1 stop
Multiple Airlines Logo
6:00 am - 6:59 pm
BOS
-
SAT
13h 59m
2 stops
$300Multiple Airlines
Sun, Apr 19 - Tue, May 5
Multiple Airlines Logo
6:30 pm - 9:29 am
SAT
-
BOS
13h 59m
1 stop
Multiple Airlines Logo
12:55 pm - 11:40 am
BOS
-
SAT
23h 45m
2 stops
$302Multiple Airlines
Sat, Apr 18 - Wed, Apr 22
Multiple Airlines Logo
1:51 pm - 11:45 am
SAT
-
BOS
20h 54m
2 stops
Multiple Airlines Logo
5:45 am - 4:16 pm
BOS
-
SAT
11h 31m
1 stop
$304Multiple Airlines
Mon, Apr 20 - Mon, May 4
Spirit Airlines Logo
6:00 am - 10:15 am
SAT
-
BOS
27h 15m
1 stop
Spirit Airlines Logo
8:16 pm - 11:51 pm
BOS
-
SAT
28h 35m
1 stop
$305Spirit Airlines
Mon, Apr 20 - Tue, Apr 28
Multiple Airlines Logo
4:04 pm - 1:17 pm
SAT
-
BOS
20h 13m
2 stops
Multiple Airlines Logo
5:55 am - 11:51 pm
BOS
-
SAT
18h 56m
1 stop
$307Multiple Airlines
Tue, Apr 21 - Sun, Apr 26

Spirit Airlines flights from San Antonio to Boston

Our best Spirit Airlines deals on San Antonio to Boston flight tickets
Spirit Airlines
Apr 20
SAT6:00 amSan Antonio
27h 15m
1 stop
BOS10:15 amBoston Logan Intl
Apr 28
BOS8:16 pmBoston Logan Intl
28h 35m
1 stop
SAT11:51 pmSan Antonio
$305
Spirit Airlines
Apr 20
SAT2:12 pmSan Antonio
19h 03m
2 stops
BOS10:15 amBoston Logan Intl
May 4
BOS5:45 amBoston Logan Intl
11h 31m
1 stop
SAT4:16 pmSan Antonio
$309
Spirit Airlines
Apr 18
SAT6:00 amSan Antonio
16h 57m
1 stop
BOS11:57 pmBoston Logan Intl
Apr 21
BOS8:16 pmBoston Logan Intl
28h 35m
1 stop
SAT11:51 pmSan Antonio
$315

Southwest flights from San Antonio to Boston

Our best Southwest deals on San Antonio to Boston flight tickets
Southwest
May 27
SAT3:45 pmSan Antonio
5h 55m
1 stop
BOS10:40 pmBoston Logan Intl
May 31
BOS5:40 amBoston Logan Intl
6h 10m
1 stop
SAT10:50 amSan Antonio
$359
Southwest
Jun 6
SAT4:40 pmSan Antonio
5h 35m
1 stop
BOS11:15 pmBoston Logan Intl
Jun 9
BOS5:50 amBoston Logan Intl
7h 55m
2 stops
SAT12:45 pmSan Antonio
$364

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 3, 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

Mon 5/4

3:00 pm-1:24 am

2 stops33h 24m

Boston Logan Intl

Wed 5/6

9:34 am-8:15 am

1 stop23h 41m

$291

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Mon 4/20

1:51 pm-11:45 am

2 stops20h 54m

Boston Logan Intl

Sat 5/2

11:16 am-1:17 pm

1 stop27h 01m

$293

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Mon 4/20

1:51 pm-10:29 am

1 stop19h 38m

Boston Logan Intl

Fri 5/1

11:06 am-1:17 pm

1 stop27h 11m

$294

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 5/29

11:30 am-11:06 am

2 stops22h 36m

Boston Logan Intl

Wed 6/3

8:44 am-9:15 am

1 stop25h 31m

$298

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Mon 4/20

1:51 pm-10:29 am

1 stop19h 38m

Boston Logan Intl

Sun 5/3

12:28 pm-5:31 pm

2 stops30h 03m

$299

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sun 4/19

6:00 am-10:15 am

1 stop27h 15m

Boston Logan Intl

Tue 5/5

6:00 am-6:59 pm

2 stops13h 59m

$300

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sat 4/18

6:30 pm-9:29 am

1 stop13h 59m

Boston Logan Intl

Wed 4/22

12:55 pm-11:40 am

2 stops23h 45m

$302
Quickest round-trip

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Mon 4/20

1:51 pm-11:45 am

2 stops20h 54m

Boston Logan Intl

Mon 5/4

5:45 am-4:16 pm

1 stop11h 31m

$304

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Mon 4/20

6:00 am-10:15 am

1 stop27h 15m

Boston Logan Intl

Tue 4/28

8:16 pm-11:51 pm

1 stop28h 35m

$305

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Tue 4/21

4:04 pm-1:17 pm

2 stops20h 13m

Boston Logan Intl

Sun 4/26

5:55 am-11:51 pm

1 stop18h 56m

$307

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 $309. 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 $319.

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 $369. 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 $384. 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 $627 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 $378 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 $280 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 0% 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

$318

Fastest flight time

4h 00m

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 $318. The best round-trip flight deal from San Antonio to Boston found on momondo in the last 72 hours is $428.
The fastest flight from San Antonio to Boston takes 4h 00m
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 00m 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
3,000 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $178Free CancellationRating
6.3
8,578 reviews
Search Spirit Airlines flights
DeltaPriceFrom $239Free CancellationRating
7.9
8,375 reviews
Search Delta flights
SouthwestPriceFrom $258Free CancellationRating
8.0
4,344 reviews
Search Southwest flights
American AirlinesPriceFrom $258Free CancellationRating
7.1
11,552 reviews
Search American Airlines flights
United AirlinesPriceFrom $282Free CancellationRating
7.4
9,539 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 6 flights on this route every week with an average price of $366. 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
Narragansett
Gloucester
Falmouth
Brockton
Warwick
Chatham
Laconia
Sturbridge
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.
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