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$858 Cheap flights to San Antonio

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to San Antonio departing on 15/3. 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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Find the cheapest flights from Australia to San Antonio

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:45 - 19:53
SYD
-
SAT
25h 08m2 stops
Multiple Airlines Logo
17:58 - 08:45
SAT
-
SYD
21h 47m2 stops
$1,757Multiple Airlines
Sun, 22 Feb - Sun, 1 Mar
Delta Logo
10:40 - 14:44
SYD
-
SAT
21h 04m1 stop
Delta Logo
06:30 - 08:30
SAT
-
SYD
33h 00m2 stops
$2,069Delta
Sun, 22 Feb - Sun, 1 Mar
Air Canada Logo
11:20 - 20:56
SYD
-
SAT
26h 36m2 stops
Air Canada Logo
11:43 - 09:35
SAT
-
SYD
28h 52m2 stops
$2,243Air Canada
Thu, 19 Feb - Mon, 23 Feb
Air Canada Logo
11:20 - 20:56
SYD
-
SAT
26h 36m2 stops
Air Canada Logo
14:10 - 09:35
SAT
-
SYD
26h 25m2 stops
$2,247Air Canada
Thu, 19 Feb - Mon, 23 Feb
American Airlines Logo
17:45 - 15:11
SYD
-
SAT
38h 26m1 stop
American Airlines Logo
16:47 - 06:55
SAT
-
SYD
21h 08m1 stop
$2,340American Airlines
Thu, 19 Feb - Mon, 23 Feb
American Airlines Logo
17:45 - 16:56
SYD
-
SAT
40h 11m2 stops
American Airlines Logo
17:41 - 06:55
SAT
-
SYD
20h 14m1 stop
$2,345American Airlines
Thu, 19 Feb - Mon, 23 Feb
Qatar Airways Logo
15:55 - 19:25
PER
-
SAT
41h 30m2 stops
Qatar Airways Logo
15:08 - 11:55
SAT
-
PER
30h 47m2 stops
$3,115Qatar Airways
Thu, 19 Feb - Mon, 23 Feb
Qatar Airways Logo
15:55 - 14:18
PER
-
SAT
36h 23m2 stops
Qatar Airways Logo
15:08 - 11:55
SAT
-
PER
30h 47m2 stops
$3,118Qatar Airways
Thu, 19 Feb - Mon, 23 Feb
United Airlines Logo
23:45 - 22:05
PER
-
SAT
36h 20m2 stops
United Airlines Logo
14:10 - 14:45
SAT
-
PER
34h 35m3 stops
$3,316United Airlines
Thu, 19 Feb - Mon, 23 Feb
United Airlines Logo
23:45 - 22:05
PER
-
SAT
36h 20m2 stops
United Airlines Logo
14:10 - 14:45
SAT
-
PER
34h 35m3 stops
$3,322United Airlines
Thu, 19 Feb - Mon, 23 Feb

momondo Fare Finder

 
Locate flights to San Antonio that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 78,305 searches and data was last updated on 10 January 2026.
Use the filters below to find and compare flights to San Antonio that are best for you.

Fly from

Route

Depart

Return

Price

SydneySan Antonio

SYD - SAT

SYDSAT

Sydney Kingsford Smith

Sun 22/2

11:45-19:53

2 stops25h 08m

San Antonio

Sun 1/3

17:58-08:45

2 stops21h 47m

$1,757

SydneySan Antonio

SYD - SAT

SYDSAT

Sydney Kingsford Smith

Sun 22/2

10:40-14:44

1 stop21h 04m

San Antonio

Sun 1/3

06:30-08:30

2 stops33h 00m

$2,069

SydneySan Antonio

SYD - SAT

SYDSAT

Sydney Kingsford Smith

Thu 19/2

11:20-20:56

2 stops26h 36m

San Antonio

Mon 23/2

11:43-09:35

2 stops28h 52m

$2,243

SydneySan Antonio

SYD - SAT

SYDSAT

Sydney Kingsford Smith

Thu 19/2

11:20-20:56

2 stops26h 36m

San Antonio

Mon 23/2

14:10-09:35

2 stops26h 25m

$2,247

SydneySan Antonio

SYD - SAT

SYDSAT

Sydney Kingsford Smith

Thu 19/2

17:45-15:11

1 stop38h 26m

San Antonio

Mon 23/2

16:47-06:55

1 stop21h 08m

$2,340

SydneySan Antonio

SYD - SAT

SYDSAT

Sydney Kingsford Smith

Thu 19/2

17:45-16:56

2 stops40h 11m

San Antonio

Mon 23/2

17:41-06:55

1 stop20h 14m

$2,345

PerthSan Antonio

PER - SAT

PERSAT

Perth

Thu 19/2

15:55-19:25

2 stops41h 30m

San Antonio

Mon 23/2

15:08-11:55

2 stops30h 47m

$3,115

PerthSan Antonio

PER - SAT

PERSAT

Perth

Thu 19/2

15:55-14:18

2 stops36h 23m

San Antonio

Mon 23/2

15:08-11:55

2 stops30h 47m

$3,118

PerthSan Antonio

PER - SAT

PERSAT

Perth

Thu 19/2

23:45-22:05

2 stops36h 20m

San Antonio

Mon 23/2

14:10-14:45

3 stops34h 35m

$3,316

PerthSan Antonio

PER - SAT

PERSAT

Perth

Thu 19/2

23:45-22:05

2 stops36h 20m

San Antonio

Mon 23/2

14:10-14:45

3 stops34h 35m

$3,322

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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San Antonio flights insights and trends

Explore insights for your San Antonio flight to craft the best travel plan

How long does it take to fly to San Antonio?

The average flight duration from Australia to San Antonio depends on which airport you fly into and out of. Flying from Sydney Kingsford Smith to Austin Bergstrom is 18h 29m on average, while flying from Melbourne to Austin Bergstrom is 20h 04m on average. Austin Bergstrom is the most popular airport in San Antonio.

Cheapest flights to San Antonio

Find the cheapest flights to San Antonio from your nearest city or airport
Find flights from Sydney to Austin
CHEAPEST MONTH TO FLY TO SAN ANTONIO FROM SYDNEYSeptember3% cheaperFlying from Sydney to San Antonio costs on average just $1,370 in September
MOST EXPENSIVE MONTH TO FLY TO SAN ANTONIO FROM SYDNEYDecember79% more expensiveIt costs about $2,528 for flights to San Antonio from Sydney in December
MOST POPULAR MONTH TO FLY TO SAN ANTONIO FROM SYDNEYMay1,300% more users visitedMore momondo users searched in flights to San Antonio from Sydney in May than any other month

Cheap San Antonio flight deals and tips

Summary info about San Antonio flight prices, duration and airlines

Best One-Way Price

$858

Best Round-Trip Price

$1,757

Fastest flight time

35h 06m

Popular in

February
The best one-way flight price to San Antonio from Australia in the last 72 hours is $858 (Sydney Kingsford Smith to San Antonio).
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The best round-trip flight price to San Antonio from Australia in the last 72 hours is $1,757 (Sydney Kingsford Smith to San Antonio).
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The fastest flight to San Antonio from Australia takes 35h 06m (Sydney Kingsford Smith to San Antonio).
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February has the highest demand for flights to San Antonio, with a 4% price increase on average.
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Frequently asked questions about flying to San Antonio

What is the cheapest month to fly to San Antonio?

In general, September is the cheapest month to fly from Australia to San Antonio. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,370. The month of April is another great option to travel to San Antonio, with average flight prices from Australia averaging around $1,428.

Is there an alternative airport near San Antonio?

San Antonio Airport can be an alternative airport used for travel to San Antonio.

Is there a cheaper alternative to flying into San Antonio?

The cheapest airport near San Antonio is typically San Antonio Airport, with an average price of $586/person. These prices vary based on where travellers are coming from. It is suggested that travellers looking to save money try momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to San Antonio Airport?

Prices for flights to San Antonio Airport are refreshed on a daily basis.

How many operators does momondo search for flights to San Antonio Airport?

As of January 2026, there are 2 operators available to choose from for flights to San Antonio Airport.

How old do you have to be to fly 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 stopovers. It is recommended that you verify with the airline you are booking with for travel to San Antonio Airport.

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

The necessary travel and health documents for your San Antonio Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

It is quick and easy to find flights to San Antonio 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 San Antonio that suits you.

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

Yes. momondo enables you to select and highlight flights to San Antonio with this policy.

How can momondo help me find flights to San Antonio?

Once all potential San Antonio flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.

I’m not ready to book a flight to San Antonio right now. Can momondo alert me if prices change?

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

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Find better results for your trip to San Antonio

Popular Flights to San Antonio

Popular routes according to searches in the past day on momondo
Perth to San Antonio Flightsfrom $2,083
Sydney Kingsford Smith to San Antonio Flightsfrom $1,687
Melbourne to San Antonio Flightsfrom $13,448