What airlines fly to Australia?

United Airlines, Air Canada and Qantas Airways are the top three most popular airlines that fly to Australia from Seattle according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 11 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Australia?

Air Canada, Qantas Airways, and Qatar Airways are the most popular carriers operating from Seattle/Tacoma Intl 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 are refreshed on a daily basis.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Australia?

As of January 2026, there are 11 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Australia.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Australia?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. 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 travel and health documents required for your trip to Australia 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 license, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$413 Cheap Flights from Seattle to Australia in 2026

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Find the cheapest flights from Seattle to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:55 am - 8:45 am

SEA

BNE

28h 50m

1 stop

10:45 am - 2:01 pm

BNE

SEA

21h 16m

1 stop

$786Air Canada

Sun, Feb 8 - Sun, Mar 8

5:50 am - 8:45 am

SEA

BNE

32h 55m

1 stop

9:45 am - 9:31 am

BNE

SEA

16h 46m

1 stop

$787Air Canada

Thu, Mar 5 - Thu, Mar 12

5:53 pm - 3:35 pm

SEA

MEL

26h 42m

2 stops

12:00 pm - 6:57 pm

MEL

SEA

25h 57m

1 stop

$972Qantas Airways

Wed, Feb 4 - Sat, Feb 28

7:20 pm - 12:00 pm

SEA

MEL

23h 40m

2 stops

6:00 am - 2:20 pm

MEL

SEA

25h 20m

2 stops

$981Singapore Airlines

Sat, May 2 - Fri, May 8

10:15 am - 11:55 pm

SEA

PER

22h 40m

1 stop

1:10 am - 8:45 am

PER

SEA

22h 35m

1 stop

$1,089Singapore Airlines

Tue, Apr 7 - Mon, Apr 27

9:25 am - 9:30 am

SEA

ADL

29h 35m

1 stop

2:55 pm - 3:41 pm

ADL

SEA

19h 16m

1 stop

$1,115United Airlines

Mon, Feb 9 - Mon, Feb 16

12:25 pm - 9:30 am

SEA

ADL

26h 35m

2 stops

2:55 pm - 10:59 pm

ADL

SEA

26h 34m

2 stops

$1,119United Airlines

Mon, Feb 9 - Mon, Feb 16

5:50 pm - 2:00 pm

SEA

HBA

25h 10m

2 stops

6:00 am - 6:57 pm

HBA

SEA

30h 57m

2 stops

$1,283Qantas Airways

Sat, Mar 7 - Sat, Mar 14

4:30 pm - 1:20 pm

SEA

CBR

51h 50m

2 stops

5:35 pm - 2:25 pm

CBR

SEA

37h 50m

2 stops

$1,392ANA

Mon, Jun 22 - Mon, Jun 29

4:30 pm - 7:45 pm

SEA

HBA

58h 15m

2 stops

9:55 am - 2:25 pm

HBA

SEA

45h 30m

2 stops

$1,592ANA

Fri, Jul 17 - Thu, Sep 17

ANA flights from Seattle to Australia

Our best ANA deals on Seattle to Australia flight tickets

ANA

Jun 27

SEA4:30 pmSeattle/Tacoma Intl

33h 45m

1 stop

SYD7:15 pmSydney Kingsford Smith

Jul 14

SYD11:50 amSydney Kingsford Smith

23h 42m

2 stops

SEA6:32 pmSeattle/Tacoma Intl

$1,109

ANA

May 2

SEA4:30 pmSeattle/Tacoma Intl

23h 55m

1 stop

SYD9:25 amSydney Kingsford Smith

May 22

SYD11:50 amSydney Kingsford Smith

43h 28m

2 stops

SEA2:18 pmSeattle/Tacoma Intl

$1,120

ANA

Jul 19

SEA4:30 pmSeattle/Tacoma Intl

51h 50m

2 stops

CBR1:20 pmCanberra

Jul 25

CBR7:05 amCanberra

48h 20m

2 stops

SEA2:25 pmSeattle/Tacoma Intl

$1,392

Air New Zealand flights from Seattle to Australia

Our best Air New Zealand deals on Seattle to Australia flight tickets

Air New Zealand

Mar 29

SEA3:40 pmSeattle/Tacoma Intl

22h 25m

1 stop

BNE7:05 amBrisbane

Apr 14

BNE10:00 amBrisbane

16h 33m

1 stop

SEA9:33 amSeattle/Tacoma Intl

$844

Air New Zealand

Feb 17

SEA3:40 pmSeattle/Tacoma Intl

22h 55m

1 stop

SYD9:35 amSydney Kingsford Smith

Mar 21

SYD10:20 amSydney Kingsford Smith

17h 11m

1 stop

SEA9:31 amSeattle/Tacoma Intl

$1,114

Air New Zealand

Jan 24

SEA6:03 amSeattle/Tacoma Intl

33h 52m

2 stops

MEL10:55 amMelbourne

Jan 31

MEL9:10 amMelbourne

26h 19m

3 stops

SEA4:29 pmSeattle/Tacoma Intl

$2,810

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 2/8

9:55 am-8:45 am

1 stop28h 50m

Brisbane

Sun 3/8

10:45 am-2:01 pm

1 stop21h 16m

$786

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Thu 3/5

5:50 am-8:45 am

1 stop32h 55m

Brisbane

Thu 3/12

9:45 am-9:31 am

1 stop16h 46m

$787

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Wed 2/4

5:53 pm-3:35 pm

2 stops26h 42m

Melbourne

Sat 2/28

12:00 pm-6:57 pm

1 stop25h 57m

$972

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sat 5/2

7:20 pm-12:00 pm

2 stops23h 40m

Melbourne

Fri 5/8

6:00 am-2:20 pm

2 stops25h 20m

$981

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

10:15 am-11:55 pm

1 stop22h 40m

Perth

Mon 4/27

1:10 am-8:45 am

1 stop22h 35m

$1,089

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 2/9

9:25 am-9:30 am

1 stop29h 35m

Adelaide

Mon 2/16

2:55 pm-3:41 pm

1 stop19h 16m

$1,115

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 2/9

12:25 pm-9:30 am

2 stops26h 35m

Adelaide

Mon 2/16

2:55 pm-10:59 pm

2 stops26h 34m

$1,119

SeattleHobart

SEA - HBA

SEAHBA

Seattle/Tacoma Intl

Sat 3/7

5:50 pm-2:00 pm

2 stops25h 10m

Hobart

Sat 3/14

6:00 am-6:57 pm

2 stops30h 57m

$1,283

SeattleCanberra

SEA - CBR

SEACBR

Seattle/Tacoma Intl

Mon 6/22

4:30 pm-1:20 pm

2 stops51h 50m

Canberra

Mon 6/29

5:35 pm-2:25 pm

2 stops37h 50m

$1,392

SeattleHobart

SEA - HBA

SEAHBA

Seattle/Tacoma Intl

Fri 7/17

4:30 pm-7:45 pm

2 stops58h 15m

Hobart

Thu 9/17

9:55 am-2:25 pm

2 stops45h 30m

$1,592

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Australia?

The month of August is, on average, the cheapest month to fly to Australia from Seattle, with most prices found around $846. If you aren’t able to travel during the month of August, then book flights to Australia from Seattle during September instead. Flights to Australia in September, while not as cheap as those in August, still average around $860.

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 weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,054 when searching 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 $876 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

Fastest flight time	18h 35m
Direct flights	None

The fastest flight from Seattle to Australia takes 18h 35m

There are no direct flights from Seattle to Australia. There are no popular flight routes from Seattle to Australia.

Search flight deals

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 are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Australia?
As of January 2026, there are 11 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Australia.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Australia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. 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 travel and health documents required for your trip to Australia 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 license, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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
Alaska Airlines	PriceFrom $97	Free Cancellation	Rating 8.0 11,775 reviews	Search Alaska Airlines flights
ANA	PriceFrom $583	Free Cancellation	Rating 8.4 1,076 reviews	Search ANA flights
Qantas Airways	PriceFrom $647	Free Cancellation	Rating 7.5 973 reviews	Search Qantas Airways flights
Hawaiian Airlines	PriceFrom $649	Free Cancellation	Rating 7.8 2,829 reviews	Search Hawaiian Airlines flights
Philippine Airlines	PriceFrom $758	Free Cancellation	Rating 7.3 955 reviews	Search Philippine Airlines flights
Air Canada	PriceFrom $779	Free Cancellation	Rating 7.1 10,646 reviews	Search Air Canada flights
American Airlines	PriceFrom $804	Free Cancellation	Rating 7.2 11,174 reviews	Search American Airlines flights
United Airlines	PriceFrom $830	Free Cancellation	Rating 7.4 9,191 reviews	Search United Airlines flights
Delta	PriceFrom $842	Free Cancellation	Rating 7.9 8,088 reviews	Search Delta flights
Qatar Airways	PriceFrom $928	Free Cancellation	Rating 7.4 3,718 reviews	Search Qatar Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Australia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Australia. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Australia with flexible booking policies on momondo?

All flight searches from Seattle to Australia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Australia?

momondo helps you find the best flight between Seattle and Australia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Australia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Australia, momondo offers a useful price alert feature which will track prices for flights to Australia from Seattle and alert you when they change.