Cheap flights from Seattle (SEA) to Sydney (SYD)

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The best prices from Seattle/Tacoma Intl to Sydney Kingsford Smith are usually found in May or March, booked 58 days in advance, depart on a Tuesday or Monday and return on a Thursday

How to find the cheapest flight from
Seattle (SEA) to Sydney (SYD)

All the information you need to plan the best SEA to SYD flight in 2021: compare Seattle to Sydney flight prices with the expected peak season, weather and rainfall in Sydney.
SEA - SYD
Price
$928 - $1,613
SYD
Temperature
51.8 - 71.6 °F
SYD
Precipitation
2 - 5.1 inches

Popular in

December

High demand for flights, 34% potential price rise

Cheapest in

May

Best time to find cheap flights, 13% potential price drop

Average price

$1,085

Average for round-trip flights in October 2021

Round-trip from

$928

From Seattle/Tacoma Intl to Sydney Kingsford Smith

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest month to fly from Seattle to Sydney?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, May can be a great choice for travel to Sydney. Flights to Sydney from Seattle in May are about $1,072 on average during May, but can be found for as low as $856.

What is the cheapest day to fly round-trip from Seattle to Sydney?

Monday is generally a great day to depart. Flying on this day could help you save up to 20%.

How far in advance should I book a flight from Seattle to Sydney?

Find a great deal and save up to 29% by booking at least 58 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Seattle to Sydney within the next two weeks, with the cheapest ticket starting at $1,107.

When is the cheapest time to fly from Seattle to Sydney (SEA - SYD)?

A simple way to save on the total cost of your ticket is to fly from Seattle to Sydney in the afternoon. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the evening.

Cheap flights from Seattle to Sydney in October, November 2021

The best prices found for SEA to SYD flights for October, November
13 Nov - 9 Dec
$1,364pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
1 Nov - 4 Nov
$1,463pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Japan Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
15 Nov - 30 Nov
$1,489pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Japan Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Sydney 2021 flight deals

Cheap flights to Sydney from Seattle found for this year
13 Dec - 19 Jan
$972pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
1 Dec - 15 Jan
$1,002pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
9 Dec - 16 Dec
$1,078pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Sydney

Late deals on round-trip flights to Sydney from Seattle, departing today and this week
1 Nov - 4 Nov
$1,463pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Japan Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
1 Nov - 4 Nov
$1,915pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Qatar Airways
 
1 STOP
SEA
Seattle/Tacoma Intl
1 Nov - 4 Nov
$1,980pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
SYD
Sydney Kingsford Smith
Multiple Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl

One-way flights to Kingsford Smith from Seattle

The cheapest one-way flights from Seattle to Sydney
4:05 am - 2:45 pm
Hawaiian Airlines
1 Stop
39h 40m
SEA - SYD
Hawaiian Airlines
$1,018
Hawaiian Airlines
10:40 am - 1:35 am
Qantas Airways
1 Stop
19h 55m
SEA - SYD
Qantas Airways
$1,254
Ovago
7:30 am - 4:30 pm
Asiana Airlines
1 Stop
38h 00m
SEA - SYD
Asiana Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Sydney</span> flights.

Flight FAQs

From Seattle to Sydney

Which airlines flying from Seattle/Tacoma Intl to Sydney Kingsford Smith have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Air Canada, Air New Zealand, and Qantas Airways flying from Seattle/Tacoma Intl to Sydney Kingsford Smith have implemented new flexible cancellation policies.

Can I find flights from Seattle to Sydney for under $1,000 on Cheapflights?

Yes, there are multiple flights from Seattle to Sydney for under $1,000. The cheapest flight booked recently is on Multiple Airlines for just $972, but on average you can expect to pay $1,046.

Are there last-minute flights available from Seattle to Sydney for under $1,500?

There are currently 20+ open flights from Seattle to Sydney within the next 7 days for less than $1,500.

How popular is this Seattle to Sydney flight route?

This flight path from Seattle/Tacoma Intl to Sydney Kingsford Smith was viewed by 54 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines to fly from Seattle to Sydney one-way?

To fly one-way, consider booking your trip with Hawaiian Airlines, which is currently one of the cheapest options available, starting at $1,018. American Airlines flights start at $1,239 while deals on Qantas Airways start at $1,254 one-way.

What are the cheapest flights from Seattle to Sydney?

On average you can expect to pay $1,927 for a flight from Seattle to Sydney. The cheapest flight overall is $453 while the most popular route, (Seattle/Tacoma Intl - Sydney Kingsford Smith) is currently priced at $972.

What are the most popular airlines that fly from Seattle to Sydney?

Major Airline, American Airlines and Air Canada are the most popular airlines when flying from Seattle to Sydney.

COVID Restrictions

View COVID Travel Restrictions for Sydney, Australia

Do I need a COVID test to fly to Sydney from Seattle?

Information is based on travel restrictions from Seattle/Tacoma Intl to Sydney Kingsford Smith

Most visitors from Seattle/Tacoma Intl will not be allowed to enter Sydney Kingsford Smith.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Sydney Kingsford Smith.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Sydney Kingsford Smith.

Documents
Travel Authorization Form - Travelers who are not in an exempt category may request an individual exemption to Australia's travel restrictions using this form.


Do I need a test to fly back to Seattle from Sydney?

Returning to Seattle/Tacoma Intl from Sydney Kingsford Smith

COVID-19 testing requirements
Visitors from Sydney Kingsford Smith must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Sydney Kingsford Smith are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Sydney, Australia

Destination information for Sydney

Things to know before you go - useful duration and weather info for your trip from Seattle to Sydney.
Today's exchange rate
$1 = $1.34
Average temperature for October in Sydney
57.2 °F
Avg rainfall for October in Sydney
5.8 ″

Airports servicing Seattle

Airports servicing Sydney

Top 10 airlines flying from Seattle/Tacoma Intl to Sydney Kingsford Smith

The chart below displays the airlines Cheapflights users traveling from Seattle to Sydney choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Alaska Airlines
$137 $217 No cancel fee 75%
Delta
$137 $1,127 No cancel fee N/A
United Airlines
$198 $1,197 No cancel fee 69%
Fiji Airways
$473 $908 No cancel fee 74%
Qantas Airways
$554 $1,088 No cancel fee 74%
American Airlines
$560 $1,060 No cancel fee 71%
Virgin Australia
$646 $1,122 No cancel fee 80%
Japan Airlines
$658 $1,745 No cancel fee 79%

We couldn't confirm the COVID-19 safety measures taken by Japan Airlines. Please check directly on their website for additional information.

China Eastern
$680 $1,007 No cancel fee 62%

We couldn't confirm the COVID-19 safety measures taken by China Eastern. Please check directly on their website for additional information.

Hawaiian Airlines
$799 $1,118 No cancel fee 85%