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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 8/7. 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

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Find the cheapest flights from Boston to San Antonio

Cheap round-trip flights

Southwest Logo
7:10 am - 11:55 amBOS-SAT
5h 45m1 stop
Southwest Logo
5:00 am - 11:30 amSAT-BOS
5h 30m1 stop
$155Southwest
Find Deal
jue., ago. 28 - lun., sep. 1
Southwest Logo
5:20 am - 5:25 pmBOS-SAT
13h 05m1 stop
Southwest Logo
4:30 pm - 11:00 pmSAT-BOS
5h 30m1 stop
$160Southwest
Find Deal
sáb., ago. 16 - lun., ago. 18
Southwest Logo
5:35 am - 2:50 pmBOS-SAT
10h 15m1 stop
Southwest Logo
4:30 pm - 11:00 pmSAT-BOS
5h 30m1 stop
$170Southwest
Find Deal
jue., ago. 7 - lun., ago. 11
Spirit Airlines Logo
9:32 am - 4:33 pmBOS-SAT
8h 01m1 stop
Spirit Airlines Logo
5:38 pm - 3:43 pmSAT-BOS
21h 05m1 stop
$173Spirit Airlines
Find Deal
jue., ago. 7 - dom., ago. 10
Southwest Logo
5:35 am - 10:55 amBOS-SAT
6h 20m1 stop
Southwest Logo
3:40 pm - 10:15 pmSAT-BOS
5h 35m1 stop
$175Southwest
Find Deal
vie., ago. 8 - mar., ago. 12
Spirit Airlines Logo
9:32 am - 4:33 pmBOS-SAT
8h 01m1 stop
Spirit Airlines Logo
7:45 am - 11:48 pmSAT-BOS
15h 03m2 stops
$195Spirit Airlines
Find Deal
jue., ago. 7 - lun., ago. 11
Spirit Airlines Logo
9:32 am - 4:33 pmBOS-SAT
8h 01m1 stop
Spirit Airlines Logo
5:53 pm - 11:18 amSAT-BOS
16h 25m1 stop
$196Spirit Airlines
Find Deal
jue., ago. 7 - jue., ago. 14
Delta Logo
9:20 am - 12:45 pmBOS-SAT
4h 25mnonstop
Delta Logo
2:40 pm - 8:00 pmSAT-BOS
4h 20mnonstop
$239Delta
Find Deal
jue., ago. 14 - jue., ago. 21
Delta Logo
9:20 am - 12:45 pmBOS-SAT
4h 25mnonstop
Delta Logo
1:35 pm - 12:18 amSAT-BOS
9h 43m1 stop
$249Delta
Find Deal
jue., ago. 14 - lun., ago. 18
Delta Logo
9:20 am - 12:45 pmBOS-SAT
4h 25mnonstop
Delta Logo
2:40 pm - 8:00 pmSAT-BOS
4h 20mnonstop
$259Delta
Find Deal
vie., ago. 22 - dom., ago. 24

Delta flights from Boston to San Antonio

Our best Delta deals on Boston to San Antonio flight tickets
Delta
Aug 14
BOS9:20 amBoston Logan Intl
4h 25m
SAT12:45 pmSan Antonio
Aug 21
SAT2:40 pmSan Antonio
4h 20m
BOS8:00 pmBoston Logan Intl
$239
Find similar
Delta
Aug 14
BOS9:20 amBoston Logan Intl
4h 25m
SAT12:45 pmSan Antonio
Aug 18
SAT1:35 pmSan Antonio
9h 43m
1 stop
BOS12:18 amBoston Logan Intl
$249
Find similar
Delta
Aug 22
BOS9:20 amBoston Logan Intl
4h 25m
SAT12:45 pmSan Antonio
Aug 24
SAT2:40 pmSan Antonio
4h 20m
BOS8:00 pmBoston Logan Intl
$259
Find similar

Spirit Airlines flights from Boston to San Antonio

Our best Spirit Airlines deals on Boston to San Antonio flight tickets
Spirit Airlines
Aug 7
BOS9:32 amBoston Logan Intl
8h 01m
1 stop
SAT4:33 pmSan Antonio
Aug 10
SAT5:38 pmSan Antonio
21h 05m
1 stop
BOS3:43 pmBoston Logan Intl
$173
Find similar
Spirit Airlines
Aug 7
BOS9:32 amBoston Logan Intl
8h 01m
1 stop
SAT4:33 pmSan Antonio
Aug 11
SAT7:45 amSan Antonio
15h 03m
2 stops
BOS11:48 pmBoston Logan Intl
$195
Find similar
Spirit Airlines
Aug 7
BOS9:32 amBoston Logan Intl
8h 01m
1 stop
SAT4:33 pmSan Antonio
Aug 14
SAT5:53 pmSan Antonio
16h 25m
1 stop
BOS11:18 amBoston Logan Intl
$196
Find similar

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 September, then book flights to San Antonio from Boston during August instead. Flights to San Antonio in August, while not as cheap as those in September, still average around $288.

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 $356. 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 $430.

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 $385. 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 $357 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 $307 on momondo.

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

There are 3 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 July 2025, prices for Boston to San Antonio flights are approximately 12% cheaper 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

$73

Fastest flight time

4h 25m

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 $73. The best round-trip flight deal from Boston to San Antonio found on momondo in the last 72 hours is $155.
The fastest flight from Boston to San Antonio takes 4h 25m
Direct flights go from Boston to San Antonio every day.
There is 1 airport near San Antonio: San Antonio (SAT)
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  • 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 25m.

  • 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
Spirit AirlinesPriceFrom $137Free CancellationRating
6.3
8,055 reviews
Search Spirit Airlines flights
JetBluePriceFrom $197Free CancellationRating
7.3
2,913 reviews
Search JetBlue flights
United AirlinesPriceFrom $206Free CancellationRating
7.4
8,846 reviews
Search United Airlines flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $239Free CancellationRating
8.0
7,951 reviews
Search Delta flights
SouthwestPriceFrom $257Free CancellationRating
8.0
4,249 reviews
Search Southwest 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 $373 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

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