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Cheap flights from San Antonio to Boston from $100

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 1/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Spirit Airlines Logo
8:33 pm - 9:16 amSAT-BOS
11h 43m1 stop
Spirit Airlines Logo
9:32 pm - 1:00 pmBOS-SAT
40h 28m3 stops
$298Spirit Airlines
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Wed, Dec 3 - Tue, Dec 9
Delta Logo
12:30 pm - 5:32 pmSAT-BOS
4h 02mnonstop
Delta Logo
11:46 am - 3:46 pmBOS-SAT
5h 00mnonstop
$299Delta
Find Deal
Thu, Jan 29 - Tue, Feb 3
Spirit Airlines Logo
7:37 pm - 3:00 pmSAT-BOS
18h 23m3 stops
Spirit Airlines Logo
6:16 am - 6:32 pmBOS-SAT
13h 16m1 stop
$300Spirit Airlines
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Fri, Nov 14 - Sun, Nov 16
Spirit Airlines Logo
3:23 pm - 3:00 pmSAT-BOS
22h 37m3 stops
Spirit Airlines Logo
6:16 am - 6:32 pmBOS-SAT
13h 16m1 stop
$301Spirit Airlines
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Thu, Nov 6 - Mon, Nov 10
Multiple Airlines Logo
10:58 am - 9:00 amSAT-BOS
21h 02m2 stops
Multiple Airlines Logo
5:45 pm - 7:38 pmBOS-SAT
26h 53m1 stop
$303Multiple Airlines
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Sat, Nov 15 - Sat, Nov 22
Multiple Airlines Logo
4:54 pm - 8:28 amSAT-BOS
14h 34m1 stop
Multiple Airlines Logo
12:20 pm - 4:40 pmBOS-SAT
29h 20m2 stops
$310Multiple Airlines
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Sun, Nov 2 - Thu, Nov 6
United Airlines Logo
7:47 am - 2:59 pmSAT-BOS
6h 12m1 stop
United Airlines Logo
6:00 am - 12:28 pmBOS-SAT
7h 28m1 stop
$314United Airlines
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Wed, Dec 10 - Wed, Dec 17
Southwest Logo
11:00 am - 6:30 pmSAT-BOS
6h 30m1 stop
Southwest Logo
7:00 am - 2:05 pmBOS-SAT
8h 05m1 stop
$319Southwest
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Fri, Feb 27 - Mon, Mar 2
United Airlines Logo
7:05 am - 2:17 pmSAT-BOS
6h 12m1 stop
United Airlines Logo
12:08 pm - 9:21 pmBOS-SAT
10h 13m2 stops
$324United Airlines
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Mon, Jan 19 - Wed, Jan 21
Southwest Logo
5:50 pm - 12:45 amSAT-BOS
5h 55m1 stop
Southwest Logo
2:10 pm - 9:10 pmBOS-SAT
8h 00m1 stop
$332Southwest
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Sun, Dec 21 - Thu, Dec 25

Southwest flights from San Antonio to Boston

Our best Southwest deals on San Antonio to Boston flight tickets
Southwest
Feb 27
SAT11:00 amSan Antonio
6h 30m
1 stop
BOS6:30 pmBoston Logan Intl
Mar 2
BOS7:00 amBoston Logan Intl
8h 05m
1 stop
SAT2:05 pmSan Antonio
$319
Find similar
Southwest
Dec 21
SAT5:50 pmSan Antonio
5h 55m
1 stop
BOS12:45 amBoston Logan Intl
Dec 25
BOS2:10 pmBoston Logan Intl
8h 00m
1 stop
SAT9:10 pmSan Antonio
$332
Find similar
Southwest
Feb 11
SAT1:45 pmSan Antonio
7h 20m
2 stops
BOS10:05 pmBoston Logan Intl
Feb 12
BOS6:30 amBoston Logan Intl
10h 55m
2 stops
SAT4:25 pmSan Antonio
$335
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Delta flights from San Antonio to Boston

Our best Delta deals on San Antonio to Boston flight tickets
Delta
Jan 29
SAT12:30 pmSan Antonio
4h 02m
BOS5:32 pmBoston Logan Intl
Feb 3
BOS11:46 amBoston Logan Intl
5h 00m
SAT3:46 pmSan Antonio
$299
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Delta
Nov 18
SAT2:00 pmSan Antonio
3h 59m
BOS6:59 pmBoston Logan Intl
Dec 2
BOS5:13 pmBoston Logan Intl
8h 21m
1 stop
SAT12:34 amSan Antonio
$309
Find similar
Delta
Feb 27
SAT12:30 pmSan Antonio
4h 02m
BOS5:32 pmBoston Logan Intl
Mar 2
BOS9:15 amBoston Logan Intl
5h 00m
SAT1:15 pmSan Antonio
$329
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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 October 20, 2025.
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

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 12/3

8:33 pm-9:16 am

1 stop11h 43m

Boston Logan Intl

Tue 12/9

9:32 pm-1:00 pm

3 stops40h 28m

$298

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Thu 1/29

12:30 pm-5:32 pm

Nonstop4h 02m

Boston Logan Intl

Tue 2/3

11:46 am-3:46 pm

Nonstop5h 00m

$299

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 11/14

7:37 pm-3:00 pm

3 stops18h 23m

Boston Logan Intl

Sun 11/16

6:16 am-6:32 pm

1 stop13h 16m

$300

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Thu 11/6

3:23 pm-3:00 pm

3 stops22h 37m

Boston Logan Intl

Mon 11/10

6:16 am-6:32 pm

1 stop13h 16m

$301

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sat 11/15

10:58 am-9:00 am

2 stops21h 02m

Boston Logan Intl

Sat 11/22

5:45 pm-7:38 pm

1 stop26h 53m

$303

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sun 11/2

4:54 pm-8:28 am

1 stop14h 34m

Boston Logan Intl

Thu 11/6

12:20 pm-4:40 pm

2 stops29h 20m

$310

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Wed 12/10

7:47 am-2:59 pm

1 stop6h 12m

Boston Logan Intl

Wed 12/17

6:00 am-12:28 pm

1 stop7h 28m

$314

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Fri 2/27

11:00 am-6:30 pm

1 stop6h 30m

Boston Logan Intl

Mon 3/2

7:00 am-2:05 pm

1 stop8h 05m

$319

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Mon 1/19

7:05 am-2:17 pm

1 stop6h 12m

Boston Logan Intl

Wed 1/21

12:08 pm-9:21 pm

2 stops10h 13m

$324

San AntonioBoston

SAT - BOS

SATBOS

San Antonio

Sun 12/21

5:50 pm-12:45 am

1 stop5h 55m

Boston Logan Intl

Thu 12/25

2:10 pm-9:10 pm

1 stop8h 00m

$332

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 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 $309.

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 $355. 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 $518.

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 $393. 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 afternoon is when there is more demand to fly to Boston, so prices are often more expensive at around $487 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 $361 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 $299 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.

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

As of October 2025, prices for San Antonio to Boston flights are approximately 74% 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

$208

Fastest flight time

3h 57m

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 $208. The best round-trip flight deal from San Antonio to Boston found on momondo in the last 72 hours is $319.
The fastest flight from San Antonio to Boston takes 3h 57m
Direct flights go from San Antonio to Boston every day.
There is 1 airport near Boston: Boston Logan Intl (BOS)
Search flight deals

  • 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 3h 59m 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
Spirit AirlinesPriceFrom $169Free CancellationRating
6.3
8,095 reviews
Search Spirit Airlines flights
DeltaPriceFrom $239Free CancellationRating
7.9
7,978 reviews
Search Delta flights
SouthwestPriceFrom $258Free CancellationRating
8.0
4,239 reviews
Search Southwest flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,024 reviews
Search American Airlines flights
United AirlinesPriceFrom $271Free CancellationRating
7.4
8,991 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 3 flights on this route every week with an average price of $357. 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
Plymouth
Kennebunkport
Cambridge
South Yarmouth
Narragansett
Nashua
Gloucester
Brockton
Laconia
Falmouth
Concord
Everett
Chatham
Sturbridge

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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