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Cheap flights from Boston to San Antonio from $54

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 5/20. 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 Boston to San Antonio

Cheap round-trip flights

These are some of the best round-trip flight deals from Boston to San Antonio that have been recently found on momondo from popular airlines, departing in the coming months.
11:14 am - 10:03 amBOS-SAT
23h 49m1 stop
10:58 am - 9:52 pmSAT-BOS
9h 54m1 stop
$148Spirit Airlines
Find Deal
lun., mar. 24 - mié., mar. 26
5:45 am - 12:27 pmBOS-SAT
7h 42m1 stop
11:11 am - 4:32 pmSAT-BOS
28h 21m1 stop
$149Spirit Airlines
Find Deal
jue., mar. 6 - lun., mar. 10
12:50 pm - 4:40 pmBOS-SAT
4h 50mnonstop
12:11 pm - 5:16 pmSAT-BOS
4h 05mnonstop
$197Delta
Find Deal
mar., abr. 1 - lun., abr. 7
6:15 am - 5:25 pmBOS-SAT
12h 10m1 stop
12:11 pm - 5:16 pmSAT-BOS
4h 05mnonstop
$207Delta
Find Deal
mar., abr. 1 - mié., abr. 9
5:55 pm - 12:10 amBOS-SAT
7h 15m1 stop
6:00 pm - 1:00 amSAT-BOS
6h 00m1 stop
$259Southwest
Find Deal
mar., mar. 25 - vie., mar. 28
5:40 pm - 11:15 pmBOS-SAT
6h 35m1 stop
11:25 am - 7:45 pmSAT-BOS
7h 20m2 stops
$294Southwest
Find Deal
lun., mar. 24 - mar., mar. 25
7:15 am - 3:33 pmBOS-SAT
9h 18m1 stop
7:00 am - 5:22 pmSAT-BOS
9h 22m1 stop
$350United Airlines
Find Deal
sáb., abr. 5 - mié., abr. 9
2:48 pm - 8:34 pmBOS-SAT
6h 46m1 stop
5:30 am - 3:22 pmSAT-BOS
8h 52m2 stops
$355United Airlines
Find Deal
mar., abr. 1 - sáb., abr. 5
5:26 am - 11:49 amBOS-SAT
7h 23m1 stop
5:00 am - 11:40 amSAT-BOS
5h 40m1 stop
$358American Airlines
Find Deal
vie., mar. 21 - dom., mar. 23
10:06 am - 5:15 pmBOS-SAT
8h 09m1 stop
7:48 am - 3:12 pmSAT-BOS
6h 24m1 stop
$363American Airlines
Find Deal
lun., mar. 17 - jue., mar. 20

Spirit Airlines flights from Boston to San Antonio

Our best Spirit Airlines deals on Boston to San Antonio flight tickets
Spirit Airlines
Mar 24
BOS11:14 amBoston Logan Intl
23h 49m
1 stop
SAT10:03 amSan Antonio
Mar 26
SAT10:58 amSan Antonio
9h 54m
1 stop
BOS9:52 pmBoston Logan Intl
Spirit Airlines
Mar 6
BOS5:45 amBoston Logan Intl
7h 42m
1 stop
SAT12:27 pmSan Antonio
Mar 10
SAT11:11 amSan Antonio
28h 21m
1 stop
BOS4:32 pmBoston Logan Intl
Spirit Airlines
Mar 24
BOS11:14 amBoston Logan Intl
23h 49m
1 stop
SAT10:03 amSan Antonio
Apr 1
SAT10:58 amSan Antonio
9h 54m
1 stop
BOS9:52 pmBoston Logan Intl

Frontier flights from Boston to San Antonio

Our best Frontier deals on Boston to San Antonio flight tickets
Frontier
Mar 6
BOS6:00 amBoston Logan Intl
12h 44m
1 stop
SAT5:44 pmSan Antonio
Mar 13
SAT8:37 pmSan Antonio
10h 32m
1 stop
BOS8:09 amBoston Logan Intl
Frontier
Mar 8
BOS6:00 amBoston Logan Intl
14h 37m
1 stop
SAT7:37 pmSan Antonio
Mar 16
SAT8:37 pmSan Antonio
12h 56m
1 stop
BOS10:33 amBoston Logan Intl
Frontier
Mar 2
BOS6:00 amBoston Logan Intl
13h 50m
1 stop
SAT6:50 pmSan Antonio
Mar 13
SAT8:37 pmSan Antonio
10h 32m
1 stop
BOS8:09 amBoston Logan Intl

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 August, then book flights to San Antonio from Boston during September instead. Flights to San Antonio in September, while not as cheap as those in August, 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 Tuesday when prices can be found for as low as $346. 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 $414.

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 evening, with an average ticket price of $383. Departure times in the evening 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 7 weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $352 when searching 7 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 $322 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 February 2025, prices for Boston to San Antonio flights are approximately 23% 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

$54

Fastest flight time

4h 36m

Direct flights

Mon, Tue, Wed, Thu, Fri and Sat

Airports in San Antonio

1 airport
The best one-way flight to San Antonio from Boston in the past 72 hours is $54. The best round-trip flight deal from Boston to San Antonio found on momondo in the last 72 hours is $148.
The fastest flight from Boston to San Antonio takes 4h 36m
Direct flights go from Boston to San Antonio on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. The only airline offering direct flights is Delta.
There is 1 airport near San Antonio: San Antonio (SAT)

  • 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 43m.

  • 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
8,013 reviews
Search Spirit Airlines flights
JetBluePriceFrom $196Free CancellationRating
7.4
3,070 reviews
Search JetBlue flights
American AirlinesPriceFrom $205Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $206Free CancellationRating
7.4
8,765 reviews
Search United Airlines flights
DeltaPriceFrom $239Free CancellationRating
8.0
8,219 reviews
Search Delta flights
SouthwestPriceFrom $257Free CancellationRating
8.1
4,411 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 $382 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.


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