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Not ready to book? to track prices.Find the cheapest flights from Austin to Sydney
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How to get the cheapest flight ticket from Austin to Sydney
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 typical price of a round-trip flight between Austin and Sydney?
What is the cheapest month to fly to Sydney?
The month of April is, on average, the cheapest month to fly to Sydney from Austin, with most prices found around $1,588. If you aren’t able to travel to Sydney during the month of April, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $1,657.
What is the cheapest day to depart on your flight to Sydney?
Our data shows that Friday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $350. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $619.
What is the cheapest time of day to depart on your flight to Sydney?
According to our data, the cheapest time of day to fly to Sydney is in the evening. momondo users have found flights departing from Austin to Sydney in the evening for as low as $311. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $582 on average. Flights to Sydney from Austin in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.
How far in advance should I book a flight to Sydney?
You are more likely to see cheaper flights to Sydney from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,044 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Austin for as low as $1,750 on momondo.
Can stopping save me money on Austin to Sydney flights?
You could potentially save up to 48% on your flight if you consider stops on a Austin to Sydney flight.
How have Austin to Sydney flight prices changed over time?
As of July 2025, prices for Austin to Sydney flights are approximately 42% cheaper when compared to flights at the same time last year.
When to book flights from Austin to Sydney
Cheap Austin to Sydney (AUS to SYD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Austin to Sydney
How far is Austin Bergstrom to Sydney Kingsford Smith by plane?
A flight from Austin Bergstrom to Sydney Kingsford Smith will travel around 13621.3 km. Flights usually cover this in 19h 44m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Austin Bergstrom Airport to Sydney Kingsford Smith Airport?
Prices for flights from Austin Bergstrom Airport to Sydney Kingsford Smith Airport were last updated today.
How old do you have to be to fly from Austin Bergstrom Airport to Sydney Kingsford Smith Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Austin Bergstrom Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Travelling to a place near Sydney?
Book flights to Sydney if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Austin to Sydney?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Austin to Sydney. momondo saves you time and could save you money on your trip.
Can I find flights from Austin to Sydney with flexible booking policies on momondo?
Yes. All flights to Sydney from Austin on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Austin to Sydney?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Austin.
I’m not ready to book a flight from Austin to Sydney right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Austin to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.