What is the cheapest airline that flies from Portland to Australia?

Alaska Airlines, Air Canada, and United Airlines are the most popular carriers operating from Portland to Australia

What airlines fly to Australia?

Air Canada, United Airlines and Qantas Airways are the top three most popular airlines that fly to Australia from Portland according to our data. Air Canada 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 7 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to Australia?

Prices for flights from Portland Airport to Australia refresh daily.

How many operators does momondo search for flights from Portland Airport to Australia?

The number of operators available for flights from Portland Airport to Australia is 7 as of July 2026.

How old do you have to be to fly from Portland Airport to Australia?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland 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 license 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.

$492 Cheap Flights from Portland to Australia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:30 pm - 11:50 am

PDX

SYD

25h 20m

2 stops

1:15 pm - 4:35 pm

SYD

PDX

44h 20m

3 stops

$974Multiple Airlines

Fri, Sep 18 - Thu, Sep 24

7:03 am - 11:50 am

PDX

SYD

35h 47m

2 stops

1:15 pm - 9:55 pm

SYD

PDX

25h 40m

2 stops

$992Multiple Airlines

Mon, Sep 14 - Sun, Sep 27

10:00 am - 8:45 am

PDX

BNE

29h 45m

1 stop

10:45 am - 6:31 pm

BNE

PDX

25h 46m

1 stop

$1,032Air Canada

Sat, Oct 31 - Sun, Nov 8

7:45 pm - 7:05 am

PDX

BNE

18h 20m

1 stop

10:45 am - 8:46 pm

BNE

PDX

28h 01m

1 stop

$1,042Air Canada

Tue, Oct 20 - Tue, Nov 3

7:45 pm - 7:05 am

PDX

BNE

18h 20m

1 stop

6:10 am - 9:26 am

BNE

PDX

21h 16m

2 stops

$1,058Multiple Airlines

Mon, Aug 31 - Wed, Nov 18

10:30 am - 6:50 pm

PDX

SYD

38h 20m

1 stop

9:40 pm - 8:49 pm

SYD

PDX

17h 09m

1 stop

$1,081Alaska Airlines

Tue, Oct 13 - Tue, Oct 27

10:30 am - 6:50 pm

PDX

SYD

39h 20m

1 stop

8:45 pm - 6:14 am

SYD

PDX

26h 29m

1 stop

$1,095Alaska Airlines

Sun, Aug 2 - Tue, Aug 25

6:35 am - 6:45 am

PDX

MEL

31h 10m

1 stop

9:45 am - 11:59 pm

MEL

PDX

31h 14m

1 stop

$1,180American Airlines

Fri, Aug 14 - Fri, Aug 21

2:53 pm - 11:00 am

PDX

TSV

27h 07m

2 stops

5:40 pm - 8:48 pm

TSV

PDX

45h 08m

3 stops

$1,823Qantas Airways

Tue, Aug 25 - Thu, Dec 17

5:00 pm - 3:50 pm

PDX

AVV

28h 50m

2 stops

8:10 am - 8:49 pm

AVV

PDX

31h 39m

2 stops

$1,942Qantas Airways

Mon, Oct 26 - Thu, Nov 19

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Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

Oct 13

PDX10:30 amPortland

38h 20m

1 stop

SYD6:50 pmSydney Kingsford Smith

Oct 27

SYD9:40 pmSydney Kingsford Smith

17h 09m

1 stop

PDX8:49 pmPortland

$1,081

Alaska Airlines

Aug 2

PDX10:30 amPortland

39h 20m

1 stop

SYD6:50 pmSydney Kingsford Smith

Aug 25

SYD8:45 pmSydney Kingsford Smith

26h 29m

1 stop

PDX6:14 amPortland

$1,095

Alaska Airlines

Aug 1

PDX7:46 amPortland

18h 04m

1 stop

SYD6:50 pmSydney Kingsford Smith

Aug 16

SYD8:45 pmSydney Kingsford Smith

26h 26m

1 stop

PDX6:11 amPortland

$1,110

Air New Zealand flights from Portland to Australia

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

Air New Zealand

Oct 20

PDX7:45 pmPortland

22h 15m

2 stops

BNE11:00 amBrisbane

Nov 3

BNE6:35 amBrisbane

20h 51m

2 stops

PDX9:26 amPortland

$1,138

Air New Zealand

Jul 6

PDX1:14 pmPortland

24h 41m

1 stop

SYD6:55 amSydney Kingsford Smith

Jul 26

SYD10:20 amSydney Kingsford Smith

18h 54m

1 stop

PDX12:14 pmPortland

$1,173

Air New Zealand

Aug 31

PDX12:45 pmPortland

25h 15m

2 stops

SYD7:00 amSydney Kingsford Smith

Sep 13

SYD10:20 amSydney Kingsford Smith

16h 51m

1 stop

PDX10:11 amPortland

$1,179

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 9/18

5:30 pm-11:50 am

2 stops25h 20m

Sydney Kingsford Smith

Thu 9/24

1:15 pm-4:35 pm

3 stops44h 20m

$974

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 9/14

7:03 am-11:50 am

2 stops35h 47m

Sydney Kingsford Smith

Sun 9/27

1:15 pm-9:55 pm

2 stops25h 40m

$992

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 10/31

10:00 am-8:45 am

1 stop29h 45m

Brisbane

Sun 11/8

10:45 am-6:31 pm

1 stop25h 46m

$1,032

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 10/20

7:45 pm-7:05 am

1 stop18h 20m

Brisbane

Tue 11/3

10:45 am-8:46 pm

1 stop28h 01m

$1,042

Quickest round-trip

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 8/31

7:45 pm-7:05 am

1 stop18h 20m

Brisbane

Wed 11/18

6:10 am-9:26 am

2 stops21h 16m

$1,058

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 10/13

10:30 am-6:50 pm

1 stop38h 20m

Sydney Kingsford Smith

Tue 10/27

9:40 pm-8:49 pm

1 stop17h 09m

$1,081

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 8/2

10:30 am-6:50 pm

1 stop39h 20m

Sydney Kingsford Smith

Tue 8/25

8:45 pm-6:14 am

1 stop26h 29m

$1,095

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Fri 8/14

6:35 am-6:45 am

1 stop31h 10m

Melbourne

Fri 8/21

9:45 am-11:59 pm

1 stop31h 14m

$1,180

PortlandTownsville

PDX - TSV

PDXTSV

Portland

Tue 8/25

2:53 pm-11:00 am

2 stops27h 07m

Townsville

Thu 12/17

5:40 pm-8:48 pm

3 stops45h 08m

$1,823

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Mon 10/26

5:00 pm-3:50 pm

2 stops28h 50m

Melbourne Avalon

Thu 11/19

8:10 am-8:49 pm

2 stops31h 39m

$1,942

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 Portland 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 April is, on average, the cheapest month to fly to Australia from Portland, with most prices found around $177. If you aren’t able to travel during the month of April, then book flights to Australia from Portland during March instead. Flights to Australia in March, while not as cheap as those in April, still average around $372.

How far in advance should I book a flight from Portland to Australia?

You are more likely to see cheaper flights to Australia from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,211 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Portland for as low as $1,049 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 19% on your flight if you consider stops on a Portland to Australia flight.

Cheap Portland to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Australia

Fastest flight time	17h 50m
Direct flights	None

The fastest flight from Portland to Australia takes 17h 50m

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

Search flight deals

Frequently asked questions about flying from Portland to Australia

When did momondo last update prices for flights from Portland Airport to Australia?
Prices for flights from Portland Airport to Australia refresh daily.
How many operators does momondo search for flights from Portland Airport to Australia?
The number of operators available for flights from Portland Airport to Australia is 7 as of July 2026.
How old do you have to be to fly from Portland Airport to Australia?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland 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 license 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 Portland to Australia

Compare and see reviews for airlines that fly from Portland to Australia with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $372	Free Cancellation	Rating 7.1 11,286 reviews	Search Air Canada flights
Delta	PriceFrom $497	Free Cancellation	Rating 7.8 8,452 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $550	Free Cancellation	Rating 7.8 2,825 reviews	Search Hawaiian Airlines flights
Qantas Airways	PriceFrom $757	Free Cancellation	Rating 7.5 1,054 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $830	Free Cancellation	Rating 7.4 9,925 reviews	Search United Airlines flights
American Airlines	PriceFrom $855	Free Cancellation	Rating 7.1 11,771 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $999	Free Cancellation	Rating 7.9 12,603 reviews	Search Alaska Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Australia from Portland.

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

Yes. momondo enables you to select and highlight flights to Australia from Portland with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Australia from Portland.

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

Of course. momondo tracks the price of Portland to Australia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.