Cheap flights from Seattle to Australia from $614
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Australia departing on 25/8. 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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How to get the cheapest flight ticket from Seattle to Australia
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 month to fly to Australia?
In general, March is the cheapest month to fly from Seattle to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,580. If you don’t want to visit Australia in March, then you should wait until February to fly from Seattle, when ticket prices are also cheap, with an average price of $1,585.
What is the cheapest day to depart on your flight to Australia?
On average, the least expensive day to fly to Australia from Seattle is on a Monday. momondo users have found tickets for Monday departures for as low as $1,483. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Seattle to Australia on a Saturday will generally be more expensive and average around $1,792. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Australia?
According to our data, the cheapest time of day to fly to Australia is in the afternoon. momondo users have found flights departing from Seattle to Australia in the afternoon for as low as $1,416. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Australia are more costly in the morning, with an average ticket price of $1,738. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Australia?
You are more likely to see cheaper flights to Australia from Seattle when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,736 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Seattle for as low as $1,546 on momondo.
Cheap Seattle to Australia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Australia
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Australia?
Prices for flights from Seattle/Tacoma Intl Airport to Australia were last updated today.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Australia?
There are 2 operators available for flights from Seattle/Tacoma Intl Airport to Australia as of June 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Australia?
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 from Seattle/Tacoma Intl Airport to Australia.
What documentation or ID do you need to fly to Australia?
The necessary travel and health documents for your Australia 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.
Best airlines flying from Seattle to Australia
Compare and see reviews for airlines that fly from Seattle to Australia with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,157 | Free cancellation | Rating 7.4 8,784 reviews | |||
| PriceFrom $1,289 | Free cancellation | Rating 7.1 9,517 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Australia?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Australia for you.
Can I find flights from Seattle to Australia with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Seattle to Australia flights to just show those with flexible booking policies.
How can momondo help me find flights from Seattle to Australia?
Once all potential Seattle to Australia 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 from Seattle to Australia right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Seattle to Australia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Australia and let you know when they change.