$385 Cheap Flights from Seattle to Sydney (SEA to SYD)

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Cheap flight deals from Seattle to Sydney Starting at $385

Discover our range of affordable one-way and round-trip flights from Seattle to Sydney and kick-start your next adventure today!

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to fly from Seattle to Sydney?

These price trend charts carefully monitor and predict how flight prices from Seattle to Sydney will change. Keep a close eye on them to understand when the best time to buy your tickets is.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Find cheap airlines flights from Seattle to Sydney

We have a range of prices from different airlines providing flights from Seattle to Sydney. Check below for the journey which best suits your travel needs.

Alaska Airlines

From $381

Hawaiian Airlines

From $385

Frontier Airlines

From $444

United Airlines

From $453

Delta Air Lines

From $456

American Airlines

From $533

Air Canada

From $540

Southwest Airlines

From $564

All Nippon Airways

From $591

Spirit Airlines

From $675

Find more flights and airlines

Alternative Cheap Routes from Seattle to Sydney

Searching for potential routes that might be cheaper and faster? There are a few alternative ways to get to Sydney from Seattle which could help you save money and time.

Cheapest
SEA
07:00 am
17h 45m
1 transfer
SYD
07:45 pm
Seattle-Tacoma International Airport - Kingsford Smith Airport
Fri, Mar 7Alaska Airlines
$381
LKE
09:35 am
26h 0m
1 transfer
SYD
06:35 am
Lake Union Sea Plane Base - Kingsford Smith Airport
Mon, Dec 23Hahn Air
$1,191
LKE
09:35 am
26h 0m
1 transfer
SYD
06:35 am
Lake Union Sea Plane Base - Kingsford Smith Airport
Mon, Dec 23Hahn Air
$1,191
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Frequently Asked Questions

When are flight tickets from Seattle (SEA) to Sydney (SYD) the cheapest?
Airlines adjust prices for flights from Seattle to Sydney based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Seattle (SEA) to Sydney (SYD) cost?
According to Trip.com's data, the lowest price is around $1,709.
What is the transportation method from the main airport to downtown in Sydney?
- The distance from Kingsford Smith Airport to downtown is about 8 km. It takes about 20 minutes by taxi.

How to find a cheap flight from Seattle to Sydney

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

Save up to £10 per person when booking your flights on Trip.com

Flight Info | Seattle to Sydney

Cheapest nonstop flight price	$384
Off-season for travel	November
Peak season for travel	September
Flight distance	12,472.44 km
Popular airline	American Airlines