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Cheap flights from San Antonio to Sydney from $1,491

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — SYD
26 Dec — 2 Jan1
1 adult
1 adult, Economy, 0 bags

Find flight deals from San Antonio to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from San Antonio to Sydney
Explore the most affordable flight options available from San Antonio to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 November 2025.

Fri 26/1217:59SAT - SYD
1 stop20h 01mUnited Airlines
Thu 8/111:50SYD - SAT
1 stop28h 07mUnited Airlines
Deal found 24/11$3,422
Fri 26/1215:19SAT - SYD
2 stops25h 31mQantas Airways
Thu 8/110:05SYD - SAT
2 stops29h 49mQantas Airways
Deal found 24/11$4,057
Fri 26/1205:15SAT - SYD
3 stops34h 30mMultiple Airlines
Thu 8/111:45SYD - SAT
2 stops22h 48mMultiple Airlines
Deal found 23/11$5,338

Cheap flight deals from San Antonio to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 26 November 2025.

Round-trip from

$1,491

Popular in

December

Cheapest in

March

Average price

$2,159
Delta
  • Delta
  • 21/1-27/1
  • 2 total stops
  • 43h 53m total
  • San Antonio to Sydney
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($710 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($177 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Antonio to Sydney 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, Cheapflights users made 647,157 searches. Data last updated 26 November 2025.
Use the filters below to find and compare flights from San Antonio to Sydney that are best for you.

Fly from

San Antonio

Fly to

Sydney

Route

Depart

Return

Price

San AntonioSydney

SAT - SYD

SATSYD

San Antonio

Wed 21/1

16:40-08:30

1 stop22h 50m

Sydney Kingsford Smith

Tue 27/1

10:40-14:43

1 stop21h 03m

$1,491

San AntonioSydney

SAT - SYD

SATSYD

San Antonio

Sun 15/2

14:33-08:30

2 stops24h 57m

Sydney Kingsford Smith

Thu 19/2

14:15-23:43

1 stop26h 28m

$1,531

San AntonioSydney

SAT - SYD

SATSYD

San Antonio

Tue 13/1

09:00-09:05

2 stops31h 05m

Sydney Kingsford Smith

Tue 20/1

11:50-15:31

1 stop20h 41m

$2,306

San AntonioSydney

SAT - SYD

SATSYD

San Antonio

Tue 13/1

14:35-09:00

1 stop25h 25m

Sydney Kingsford Smith

Tue 20/1

17:45-22:54

1 stop22h 09m

$2,370

San AntonioSydney

SAT - SYD

SATSYD

San Antonio

Tue 13/1

18:46-19:45

2 stops55h 59m

Sydney Kingsford Smith

Mon 19/1

21:40-17:45

2 stops37h 05m

$2,679

San AntonioSydney

SAT - SYD

SATSYD

San Antonio

Thu 8/1

18:46-19:45

2 stops55h 59m

Sydney Kingsford Smith

Thu 15/1

21:40-17:45

2 stops37h 05m

$2,774

San AntonioSydney

SAT - SYD

SATSYD

San Antonio

Thu 8/1

18:46-19:45

2 stops55h 59m

Sydney Kingsford Smith

Thu 15/1

11:20-22:54

1 stop28h 34m

$2,942

Flights are sorted by cheapest return flights first.

Deals found on 23/11

Best time to book a flight from San Antonio to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from San Antonio with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to Sydney

How far ahead should I book a flight from San Antonio to Sydney?

Use this chart to determine the optimal time to book a return flight from San Antonio to Sydney. Price data was last updated on 21 November 2025.

The best time to book flights from San Antonio to Sydney is 24 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Antonio to Sydney?

Currently, May is the cheapest month in which you can book a flight from San Antonio to Sydney (average of $697). Flying from San Antonio to Sydney in December is currently the most expensive (average of $1,545). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Antonio to Sydney?

    Airlines like Delta fly from San Antonio to Sydney in about 22h 50m. The time it takes to get you to your destination can typically vary by up to . There are 13530 km between San Antonio and Sydney.

  • Can I find deals for flights from San Antonio to Sydney that include hotel bookings?

    Yes. In addition to deals on San Antonio to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Sydney.

  • Can I find deals for business class flights from San Antonio to Sydney?

    Yes. Cheapflights offers flight deals from San Antonio to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Antonio to Sydney?

    Currently, May is the cheapest month in which you can book a flight from San Antonio to Sydney (average of $697). Flying from San Antonio to Sydney in December is currently the most expensive (average of $1,545). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Penrith
Terrigal
Manly
Randwick
Lithgow
Coogee
Leura
Bondi Beach
Cronulla

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Can Cheapflights find flights from San Antonio to Sydney with no change fees?

Need flexible booking options for your flight to Sydney from San Antonio? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from San Antonio to Sydney become cheaper?

Yes, Cheapflights offers price alerts on San Antonio to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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