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Cheap flights from Austin to San Antonio 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 Austin to San Antonio departing on 5/1. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:45 am - 12:17 am
AUS
-
SAT
17h 32m
1 stop
Frontier Logo
10:05 am - 10:06 am
SAT
-
AUS
24h 01m
1 stop
$238Frontier
Wed, Mar 25 - Fri, Mar 27
Multiple Airlines Logo
4:59 pm - 9:27 am
AUS
-
SAT
16h 28m
1 stop
Multiple Airlines Logo
6:45 am - 10:05 am
SAT
-
AUS
27h 20m
1 stop
$239Multiple Airlines
Fri, Mar 27 - Sun, Apr 5
Frontier Logo
11:01 am - 12:17 am
AUS
-
SAT
13h 16m
1 stop
Frontier Logo
6:45 am - 12:16 am
SAT
-
AUS
17h 31m
1 stop
$240Frontier
Sat, Mar 21 - Mon, Mar 23
Frontier Logo
6:45 am - 12:19 am
AUS
-
SAT
17h 34m
1 stop
Frontier Logo
6:45 am - 10:05 am
SAT
-
AUS
27h 20m
1 stop
$270Frontier
Sat, Apr 4 - Sun, Apr 5
Frontier Logo
11:01 am - 12:17 am
AUS
-
SAT
13h 16m
1 stop
Frontier Logo
11:35 am - 9:50 pm
SAT
-
AUS
34h 15m
2 stops
$273Frontier
Sat, Mar 21 - Mon, Mar 23
Frontier Logo
6:45 am - 12:17 am
AUS
-
SAT
17h 32m
1 stop
Frontier Logo
11:35 am - 10:06 am
SAT
-
AUS
22h 31m
2 stops
$278Frontier
Wed, Mar 25 - Fri, Mar 27
Multiple Airlines Logo
4:59 pm - 9:27 am
AUS
-
SAT
16h 28m
1 stop
Multiple Airlines Logo
6:45 am - 12:21 am
SAT
-
AUS
17h 36m
1 stop
$279Multiple Airlines
Fri, Mar 27 - Fri, Apr 3
Multiple Airlines Logo
4:59 pm - 9:27 am
AUS
-
SAT
16h 28m
1 stop
Multiple Airlines Logo
11:38 am - 10:05 am
SAT
-
AUS
22h 27m
2 stops
$296Multiple Airlines
Fri, Mar 27 - Sun, Apr 5
Frontier Logo
6:45 am - 12:19 am
AUS
-
SAT
17h 34m
1 stop
Frontier Logo
11:38 am - 10:05 am
SAT
-
AUS
22h 27m
2 stops
$324Frontier
Sat, Apr 4 - Sun, Apr 5
Spirit Airlines Logo
4:59 pm - 9:27 am
AUS
-
SAT
16h 28m
1 stop
Spirit Airlines Logo
1:22 pm - 4:04 pm
SAT
-
AUS
26h 42m
3 stops
$328Spirit Airlines
Wed, Mar 25 - Fri, Mar 27

Frontier flights from Austin to San Antonio

Our best Frontier deals on Austin to San Antonio flight tickets
Frontier
Mar 25
AUS6:45 amAustin Bergstrom
17h 32m
1 stop
SAT12:17 amSan Antonio
Mar 27
SAT10:05 amSan Antonio
24h 01m
1 stop
AUS10:06 amAustin Bergstrom
$238
Frontier
Mar 21
AUS11:01 amAustin Bergstrom
13h 16m
1 stop
SAT12:17 amSan Antonio
Mar 23
SAT6:45 amSan Antonio
17h 31m
1 stop
AUS12:16 amAustin Bergstrom
$240
Frontier
Apr 4
AUS6:45 amAustin Bergstrom
17h 34m
1 stop
SAT12:19 amSan Antonio
Apr 5
SAT6:45 amSan Antonio
27h 20m
1 stop
AUS10:05 amAustin Bergstrom
$270

Spirit Airlines flights from Austin to San Antonio

Our best Spirit Airlines deals on Austin to San Antonio flight tickets
Spirit Airlines
Mar 25
AUS4:59 pmAustin Bergstrom
16h 28m
1 stop
SAT9:27 amSan Antonio
Mar 27
SAT1:22 pmSan Antonio
26h 42m
3 stops
AUS4:04 pmAustin Bergstrom
$328
Spirit Airlines
Mar 27
AUS4:59 pmAustin Bergstrom
19h 28m
2 stops
SAT12:27 pmSan Antonio
Apr 3
SAT10:22 amSan Antonio
14h 02m
1 stop
AUS12:24 amAustin Bergstrom
$330
Spirit Airlines
Mar 25
AUS4:59 pmAustin Bergstrom
16h 28m
1 stop
SAT9:27 amSan Antonio
Mar 27
SAT1:22 pmSan Antonio
26h 42m
3 stops
AUS4:04 pmAustin Bergstrom
$349

momondo Fare Finder

 
Customize your flight search to find flights from Austin 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 March 2, 2026.
Use the filters below to find and compare flights from Austin to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Wed 3/25

6:45 am-12:17 am

1 stop17h 32m

San Antonio

Fri 3/27

10:05 am-10:06 am

1 stop24h 01m

$238

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Fri 3/27

4:59 pm-9:27 am

1 stop16h 28m

San Antonio

Sun 4/5

6:45 am-10:05 am

1 stop27h 20m

$239

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Sat 3/21

11:01 am-12:17 am

1 stop13h 16m

San Antonio

Mon 3/23

6:45 am-12:16 am

1 stop17h 31m

$240

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Sat 4/4

6:45 am-12:19 am

1 stop17h 34m

San Antonio

Sun 4/5

6:45 am-10:05 am

1 stop27h 20m

$270

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Sat 3/21

11:01 am-12:17 am

1 stop13h 16m

San Antonio

Mon 3/23

11:35 am-9:50 pm

2 stops34h 15m

$273

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Wed 3/25

6:45 am-12:17 am

1 stop17h 32m

San Antonio

Fri 3/27

11:35 am-10:06 am

2 stops22h 31m

$278

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Fri 3/27

4:59 pm-9:27 am

1 stop16h 28m

San Antonio

Fri 4/3

6:45 am-12:21 am

1 stop17h 36m

$279

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Fri 3/27

4:59 pm-9:27 am

1 stop16h 28m

San Antonio

Sun 4/5

11:38 am-10:05 am

2 stops22h 27m

$296

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Sat 4/4

6:45 am-12:19 am

1 stop17h 34m

San Antonio

Sun 4/5

11:38 am-10:05 am

2 stops22h 27m

$324

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Wed 3/25

4:59 pm-9:27 am

1 stop16h 28m

San Antonio

Fri 3/27

1:22 pm-4:04 pm

3 stops26h 42m

$328

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 San Antonio from

How to get the cheapest flight ticket from Austin 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 airline that flies from Austin Bergstrom to San Antonio?

Frontier and Spirit Airlines are the most popular carriers operating from Austin Bergstrom to San Antonio

When to book flights from Austin to San Antonio

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

Cheap Austin to San Antonio (AUS to SAT) flight deals and tips

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

Fastest flight time

13h 16m

Direct flights

None
The fastest flight from Austin to San Antonio takes 13h 16m
There are no direct flights from Austin to San Antonio. There are no popular flight routes from Austin to San Antonio.
Search flight deals

  • How far is Austin Bergstrom to San Antonio by plane?

    There are 74.2 mi between Austin Bergstrom and San Antonio. Flights usually cover this in 13h 16m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Austin Bergstrom Airport to San Antonio Airport?

    Prices for flights from Austin Bergstrom Airport to San Antonio Airport are updated daily.

  • How old do you have to be to fly from Austin Bergstrom 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 Austin Bergstrom Airport to San Antonio Airport.

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

    The required travel and health documents for your San Antonio Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Antonio Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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
Pleasanton
Schertz

Why use momondo?

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

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

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

Flights from Austin to San Antonio with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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

If you are not ready to book a flight from Austin to San Antonio now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Antonio and let you know when they change.

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