Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Boston to San Antonio from $73

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Antonio departing on 2/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Boston to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:22 pm - 5:01 pm
BOS
-
SAT
29h 39m2 stops
Multiple Airlines Logo
6:30 am - 2:38 pm
SAT
-
BOS
7h 08m1 stop
$279Multiple Airlines
Sun, Jan 4 - Sat, Jan 10
Multiple Airlines Logo
10:01 am - 1:12 pm
BOS
-
SAT
28h 11m2 stops
Multiple Airlines Logo
10:26 am - 5:15 pm
SAT
-
BOS
29h 49m1 stop
$281Multiple Airlines
Thu, Feb 12 - Mon, Feb 23
Delta Logo
11:46 am - 3:45 pm
BOS
-
SAT
4h 59mnonstop
Delta Logo
4:00 pm - 11:26 pm
SAT
-
BOS
6h 26m1 stop
$282Delta
Tue, Feb 10 - Mon, Feb 23
Spirit Airlines Logo
5:34 am - 11:52 pm
BOS
-
SAT
19h 18m2 stops
Spirit Airlines Logo
6:30 am - 11:57 pm
SAT
-
BOS
16h 27m3 stops
$283Spirit Airlines
Fri, Jan 23 - Sat, Jan 24
Spirit Airlines Logo
7:00 am - 9:40 am
BOS
-
SAT
27h 40m2 stops
Spirit Airlines Logo
10:35 am - 5:44 pm
SAT
-
BOS
30h 09m3 stops
$284Spirit Airlines
Fri, Jan 16 - Mon, Jan 19
Delta Logo
11:46 am - 3:45 pm
BOS
-
SAT
4h 59mnonstop
Delta Logo
12:05 pm - 4:59 pm
SAT
-
BOS
3h 54mnonstop
$285Delta
Tue, Jan 6 - Sat, Jan 10
Spirit Airlines Logo
5:34 am - 11:52 pm
BOS
-
SAT
19h 18m2 stops
Spirit Airlines Logo
6:30 am - 11:57 pm
SAT
-
BOS
16h 27m2 stops
$286Spirit Airlines
Wed, Jan 14 - Sun, Jan 18
Spirit Airlines Logo
5:34 am - 11:52 pm
BOS
-
SAT
19h 18m3 stops
Spirit Airlines Logo
10:35 am - 2:38 pm
SAT
-
BOS
27h 03m3 stops
$288Spirit Airlines
Mon, Jan 26 - Thu, Jan 29
Multiple Airlines Logo
12:29 pm - 6:16 pm
BOS
-
SAT
30h 47m1 stop
Multiple Airlines Logo
6:30 am - 2:38 pm
SAT
-
BOS
7h 08m1 stop
$291Multiple Airlines
Sun, Jan 4 - Sat, Jan 10
Delta Logo
4:25 pm - 12:41 am
BOS
-
SAT
9h 16m1 stop
Delta Logo
5:25 am - 12:24 pm
SAT
-
BOS
5h 59m1 stop
$292Delta
Tue, Feb 10 - Wed, Feb 25

Spirit Airlines flights from Boston to San Antonio

Our best Spirit Airlines deals on Boston to San Antonio flight tickets
Spirit Airlines
Jan 23
BOS5:34 amBoston Logan Intl
19h 18m
2 stops
SAT11:52 pmSan Antonio
Jan 24
SAT6:30 amSan Antonio
16h 27m
3 stops
BOS11:57 pmBoston Logan Intl
$283
Find similar
Spirit Airlines
Jan 16
BOS7:00 amBoston Logan Intl
27h 40m
2 stops
SAT9:40 amSan Antonio
Jan 19
SAT10:35 amSan Antonio
30h 09m
3 stops
BOS5:44 pmBoston Logan Intl
$284
Find similar
Spirit Airlines
Jan 14
BOS5:34 amBoston Logan Intl
19h 18m
2 stops
SAT11:52 pmSan Antonio
Jan 18
SAT6:30 amSan Antonio
16h 27m
2 stops
BOS11:57 pmBoston Logan Intl
$286
Find similar

Delta flights from Boston to San Antonio

Our best Delta deals on Boston to San Antonio flight tickets
Delta
Feb 10
BOS11:46 amBoston Logan Intl
4h 59m
SAT3:45 pmSan Antonio
Feb 23
SAT4:00 pmSan Antonio
6h 26m
1 stop
BOS11:26 pmBoston Logan Intl
$282
Find similar
Delta
Jan 6
BOS11:46 amBoston Logan Intl
4h 59m
SAT3:45 pmSan Antonio
Jan 10
SAT12:05 pmSan Antonio
3h 54m
BOS4:59 pmBoston Logan Intl
$285
Find similar
Delta
Feb 10
BOS4:25 pmBoston Logan Intl
9h 16m
1 stop
SAT12:41 amSan Antonio
Feb 25
SAT5:25 amSan Antonio
5h 59m
1 stop
BOS12:24 pmBoston Logan Intl
$292
Find similar

momondo Fare Finder

 
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, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Boston to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Sun 1/4

12:22 pm-5:01 pm

2 stops29h 39m

San Antonio

Sat 1/10

6:30 am-2:38 pm

1 stop7h 08m

$279

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Thu 2/12

10:01 am-1:12 pm

2 stops28h 11m

San Antonio

Mon 2/23

10:26 am-5:15 pm

1 stop29h 49m

$281

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Tue 2/10

11:46 am-3:45 pm

Nonstop4h 59m

San Antonio

Mon 2/23

4:00 pm-11:26 pm

1 stop6h 26m

$282

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Fri 1/23

5:34 am-11:52 pm

2 stops19h 18m

San Antonio

Sat 1/24

6:30 am-11:57 pm

3 stops16h 27m

$283

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Fri 1/16

7:00 am-9:40 am

2 stops27h 40m

San Antonio

Mon 1/19

10:35 am-5:44 pm

3 stops30h 09m

$284

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Tue 1/6

11:46 am-3:45 pm

Nonstop4h 59m

San Antonio

Sat 1/10

12:05 pm-4:59 pm

Nonstop3h 54m

$285

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Wed 1/14

5:34 am-11:52 pm

2 stops19h 18m

San Antonio

Sun 1/18

6:30 am-11:57 pm

2 stops16h 27m

$286

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Mon 1/26

5:34 am-11:52 pm

3 stops19h 18m

San Antonio

Thu 1/29

10:35 am-2:38 pm

3 stops27h 03m

$288

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Sun 1/4

12:29 pm-6:16 pm

1 stop30h 47m

San Antonio

Sat 1/10

6:30 am-2:38 pm

1 stop7h 08m

$291

BostonSan Antonio

BOS - SAT

BOSSAT

Boston Logan Intl

Tue 2/10

4:25 pm-12:41 am

1 stop9h 16m

San Antonio

Wed 2/25

5:25 am-12:24 pm

1 stop5h 59m

$292

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San Antonio from

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

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 San Antonio?

If you aren’t able to travel during the month of January, then book flights to San Antonio from Boston during July instead. Flights to San Antonio in July, while not as cheap as those in January, still average around $329.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Friday when prices can be found for as low as $357. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Monday is $457.

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

According to our data, the cheapest time of day to fly to San Antonio is in the afternoon. momondo users have found flights departing from Boston to San Antonio in the afternoon for as low as $292. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the morning, with an average ticket price of $393. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $385 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Boston for as low as $318 on momondo.

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

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

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

As of December 2025, prices for Boston to San Antonio flights are approximately 32% more expensive when compared to flights at the same time last year.

When to book flights from Boston to San Antonio

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

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

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

Best Price Found

$223

Fastest flight time

4h 37m

Direct flights

Every day

Airports in San Antonio

1 airport
The best one-way flight to San Antonio from Boston in the past 72 hours is $223. The best round-trip flight deal from Boston to San Antonio found on momondo in the last 72 hours is $299.
The fastest flight from Boston to San Antonio takes 4h 37m
Direct flights go from Boston to San Antonio every day.
There is 1 airport in San Antonio. From Boston there are direct flights to San Antonio (SAT).
Search flight deals

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

    A flight from Boston Logan Intl to San Antonio will travel around 1763.9 mi. In terms of flight time, this usually takes a little over 4h 37m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The travel and health documents you'll need for your trip to San Antonio 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 San Antonio 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 Boston to San Antonio?

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

Best airlines flying from Boston to San Antonio

Compare and see reviews for airlines that fly from Boston to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $102Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
JetBluePriceFrom $118Free CancellationRating
7.2
2,898 reviews
Search JetBlue flights
Spirit AirlinesPriceFrom $160Free CancellationRating
6.3
8,175 reviews
Search Spirit Airlines flights
DeltaPriceFrom $239Free CancellationRating
7.9
8,008 reviews
Search Delta flights
SouthwestPriceFrom $243Free CancellationRating
7.9
4,252 reviews
Search Southwest flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
United AirlinesPriceFrom $274Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights

  • Delta Flights From Boston to San Antonio

    Delta flight deals from Boston to San Antonio start from $239 round-trip. Over the 6 Delta flights for this route in a normal week, average airfare is usually $390 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville
Boerne
Schertz
Pleasanton

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to San Antonio. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to San Antonio from Boston with this policy.

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

momondo helps you find the best flight between Boston and San Antonio 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 Boston to San Antonio right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Antonio from Boston. 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 San Antonio 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
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/10
Sat 1/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States