Which airports can I use when flying from Seattle to Sydney?

Flights from Seattle to Sydney usually depart from Seattle/Tacoma Intl (SEA) and arrive at Sydney (YQY).

Do I need a passport to fly from Seattle to Sydney?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Seattle to Sydney changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $1,237 to $2,101. That means the highest observed fare was about 69% higher than the lowest one.

What is the time difference between Seattle and Sydney?

Sydney is 4 hours ahead of Seattle (Atlantic Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

How much is a round-trip flight from Seattle to Sydney?

Round-trip flights from Seattle to Sydney typically range from $879 to $1,611. The lowest price found in the past 5 days was $1,237, on Air Canada.

Which airline is the cheapest to fly from Seattle to Sydney?

Air Canada ($1,237) offered the cheapest round-trip ticket from Seattle to Sydney in the last 5 days.

$1,237 CHEAP FLIGHTS from Seattle to Sydney (SEA - YQY)

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Cheapest round-trip

$1,237

Typical prices: $879-$1,611

Air Canada

Sun 12/2Sun 12/9

SEA - YQY • 2 stops

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Flight Deals

Cheap Flights from Seattle to Sydney (SEA-YQY)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Seattle to Sydney

Wed, Dec 2 - Wed, Dec 9

7:05 pm - 11:30 amSEA Seattle/Tacoma Intl-YQY Sydney

12h 25m2 stops Vancouver Intl Toronto Pearson Intl

5:55 am - 2:37 pmYQY Sydney-SEA Seattle/Tacoma Intl

12h 42m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,237Air Canada

Wed, Dec 2 - Wed, Dec 9

7:05 pm - 11:30 amSEA Seattle/Tacoma Intl-YQY Sydney

12h 25m2 stops Vancouver Intl Toronto Pearson Intl

12:10 pm - 8:59 pmYQY Sydney-SEA Seattle/Tacoma Intl

12h 49m1 stop Toronto Pearson Intl

$1,266Air Canada

Mon, Nov 16 - Mon, Nov 23

8:40 am - 12:26 amSEA Seattle/Tacoma Intl-YQY Sydney

11h 46m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

6:05 am - 2:37 pmYQY Sydney-SEA Seattle/Tacoma Intl

12h 32m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,267Air Canada

Thu, Dec 3 - Thu, Dec 10

8:40 am - 12:15 amSEA Seattle/Tacoma Intl-YQY Sydney

11h 35m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

12:10 pm - 9:32 amYQY Sydney-SEA Seattle/Tacoma Intl

25h 22m2 stops Toronto Pearson Intl Vancouver Intl

$1,295Air Canada

Thu, Dec 3 - Thu, Dec 10

7:45 am - 11:30 amSEA Seattle/Tacoma Intl-YQY Sydney

23h 45m1 stop Toronto Pearson Intl

12:10 pm - 9:32 amYQY Sydney-SEA Seattle/Tacoma Intl

25h 22m2 stops Toronto Pearson Intl Vancouver Intl

$1,383Air Canada

Mon, Nov 16 - Mon, Nov 23

7:45 am - 11:30 amSEA Seattle/Tacoma Intl-YQY Sydney

23h 45m1 stop Toronto Pearson Intl

6:05 am - 2:37 pmYQY Sydney-SEA Seattle/Tacoma Intl

12h 32m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,391Air Canada

Thu, Dec 3 - Thu, Dec 10

7:45 am - 11:30 amSEA Seattle/Tacoma Intl-YQY Sydney

23h 45m1 stop Toronto Pearson Intl

12:10 pm - 8:59 pmYQY Sydney-SEA Seattle/Tacoma Intl

12h 49m1 stop Toronto Pearson Intl

$1,535Air Canada

Mon, Nov 16 - Mon, Nov 23

7:45 am - 11:30 amSEA Seattle/Tacoma Intl-YQY Sydney

23h 45m1 stop Toronto Pearson Intl

12:10 pm - 8:59 pmYQY Sydney-SEA Seattle/Tacoma Intl

12h 49m1 stop Toronto Pearson Intl

$2,101Air Canada

Booking Insights

Price, demand and travel trends for Seattle to Sydney flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

How much is a round-trip flight from Seattle to Sydney? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Sydney departing in december.

Find deals

Cheapest flight	$1,237

Round-trip flight from Seattle to Sydney

When to book flights from Seattle to Sydney

Are your dates flexible? Find out the best times to travel from Seattle to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Do I need a passport to fly from Seattle to Sydney?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from Seattle to Sydney changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $1,237 to $2,101. That means the highest observed fare was about 69% higher than the lowest one.
Which airports can I use when flying from Seattle to Sydney?
Flights from Seattle to Sydney usually depart from Seattle/Tacoma Intl (SEA) and arrive at Sydney (YQY).
What is the time difference between Seattle and Sydney?
Sydney is 4 hours ahead of Seattle (Atlantic Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

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SEA - YQY

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Everything you should know

Cheap Flights from Seattle to Sydney (SEA-YQY)

Recent round-trip flight deals from Seattle to Sydney

Recent one-way flight deals from Seattle to Sydney

Price, demand and travel trends for Seattle to Sydney flights

How much is a round-trip flight from Seattle to Sydney?

Which airline is the cheapest to fly from Seattle to Sydney?

Key details for Seattle to Sydney flights

Cheapest flight

When to book flights from Seattle to Sydney

Your Seattle to Sydney flight questions, answered

More options for your flight from Seattle to Sydney

Complete your trip to Sydney with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Seattle to Sydney

Find direct flights to and from Seattle and Sydney

Flights from domestic origins to Sydney

Flights to other popular destinations