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Cheap flights from Austin to San Antonio from $99

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 4/2. 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
6:13 pm - 3:53 pm
AUS
-
SAT
21h 40m
1 stop
Frontier Logo
3:00 pm - 7:55 pm
SAT
-
AUS
28h 55m
1 stop
$204Frontier
Tue, Apr 14 - Fri, Apr 17
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
$206Frontier
Thu, Apr 2 - Sun, Apr 5
Frontier Logo
7:00 am - 12:19 am
AUS
-
SAT
17h 19m
1 stop
Frontier Logo
6:45 am - 12:21 am
SAT
-
AUS
17h 36m
1 stop
$212Frontier
Wed, Apr 1 - Mon, Apr 6
Frontier Logo
10:45 pm - 12:19 am
AUS
-
SAT
25h 34m
1 stop
Frontier Logo
6:45 am - 12:21 am
SAT
-
AUS
17h 36m
1 stop
$217Frontier
Tue, Mar 31 - Fri, Apr 3
Multiple Airlines Logo
4:59 pm - 9:27 am
AUS
-
SAT
16h 28m
1 stop
Multiple Airlines Logo
3:00 pm - 7:55 pm
SAT
-
AUS
28h 55m
1 stop
$221Multiple Airlines
Fri, Apr 10 - Fri, Apr 17
Frontier Logo
10:45 pm - 12:19 am
AUS
-
SAT
25h 34m
1 stop
Frontier Logo
6:45 am - 12:21 am
SAT
-
AUS
17h 36m
1 stop
$224Frontier
Tue, Mar 31 - Sat, Apr 4
Frontier Logo
6:45 am - 12:19 am
AUS
-
SAT
17h 34m
1 stop
Frontier Logo
3:00 pm - 5:18 pm
SAT
-
AUS
26h 18m
1 stop
$239Frontier
Mon, Apr 13 - Mon, Apr 20
Frontier Logo
6:45 am - 12:19 am
AUS
-
SAT
17h 34m
1 stop
Frontier Logo
4:04 pm - 10:05 am
SAT
-
AUS
18h 01m
1 stop
$241Frontier
Sat, Apr 11 - Sat, Apr 18
Frontier Logo
11:00 am - 12:19 am
AUS
-
SAT
13h 19m
1 stop
Frontier Logo
6:45 am - 10:05 am
SAT
-
AUS
27h 20m
1 stop
$246Frontier
Thu, Apr 9 - Sun, Apr 12
Multiple Airlines Logo
11:00 am - 12:19 am
AUS
-
SAT
13h 19m
1 stop
Multiple Airlines Logo
10:22 am - 4:04 pm
SAT
-
AUS
29h 42m
1 stop
$247Multiple Airlines
Thu, Apr 2 - Fri, Apr 10

Spirit Airlines flights from Austin to San Antonio

Our best Spirit Airlines deals on Austin to San Antonio flight tickets
Spirit Airlines
Apr 12
AUS4:59 pmAustin Bergstrom
16h 28m
1 stop
SAT9:27 amSan Antonio
Apr 19
SAT6:00 amSan Antonio
17h 40m
1 stop
AUS11:40 pmAustin Bergstrom
$278
Spirit Airlines
Apr 2
AUS6:12 amAustin Bergstrom
27h 15m
1 stop
SAT9:27 amSan Antonio
Apr 10
SAT10:22 amSan Antonio
14h 02m
1 stop
AUS12:24 amAustin Bergstrom
$291
Spirit Airlines
Apr 2
AUS6:12 amAustin Bergstrom
27h 15m
1 stop
SAT9:27 amSan Antonio
Apr 10
SAT1:22 pmSan Antonio
26h 42m
2 stops
AUS4:04 pmAustin Bergstrom
$304

Frontier flights from Austin to San Antonio

Our best Frontier deals on Austin to San Antonio flight tickets
Frontier
Apr 14
AUS6:13 pmAustin Bergstrom
21h 40m
1 stop
SAT3:53 pmSan Antonio
Apr 17
SAT3:00 pmSan Antonio
28h 55m
1 stop
AUS7:55 pmAustin Bergstrom
$204
Frontier
Apr 2
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
$206
Frontier
Apr 1
AUS7:00 amAustin Bergstrom
17h 19m
1 stop
SAT12:19 amSan Antonio
Apr 6
SAT6:45 amSan Antonio
17h 36m
1 stop
AUS12:21 amAustin Bergstrom
$212

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 18, 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

Cheapest round-trip

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Tue 4/14

6:13 pm-3:53 pm

1 stop21h 40m

San Antonio

Fri 4/17

3:00 pm-7:55 pm

1 stop28h 55m

$204

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Thu 4/2

6:45 am-12:19 am

1 stop17h 34m

San Antonio

Sun 4/5

6:45 am-10:05 am

1 stop27h 20m

$206
Quickest round-trip

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Wed 4/1

7:00 am-12:19 am

1 stop17h 19m

San Antonio

Mon 4/6

6:45 am-12:21 am

1 stop17h 36m

$212

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Tue 3/31

10:45 pm-12:19 am

1 stop25h 34m

San Antonio

Fri 4/3

6:45 am-12:21 am

1 stop17h 36m

$217

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Fri 4/10

4:59 pm-9:27 am

1 stop16h 28m

San Antonio

Fri 4/17

3:00 pm-7:55 pm

1 stop28h 55m

$221

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Tue 3/31

10:45 pm-12:19 am

1 stop25h 34m

San Antonio

Sat 4/4

6:45 am-12:21 am

1 stop17h 36m

$224

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Mon 4/13

6:45 am-12:19 am

1 stop17h 34m

San Antonio

Mon 4/20

3:00 pm-5:18 pm

1 stop26h 18m

$239

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Sat 4/11

6:45 am-12:19 am

1 stop17h 34m

San Antonio

Sat 4/18

4:04 pm-10:05 am

1 stop18h 01m

$241

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Thu 4/9

11:00 am-12:19 am

1 stop13h 19m

San Antonio

Sun 4/12

6:45 am-10:05 am

1 stop27h 20m

$246

AustinSan Antonio

AUS - SAT

AUSSAT

Austin Bergstrom

Thu 4/2

11:00 am-12:19 am

1 stop13h 19m

San Antonio

Fri 4/10

10:22 am-4:04 pm

1 stop29h 42m

$247

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, Spirit Airlines, and Southwest 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

5h 20m

Direct flights

None
The fastest flight from Austin to San Antonio takes 5h 20m
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 5h 20m, 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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