Which airlines fly to Australia?

United Airlines, Qantas Airways and Air Canada are the top three most popular airlines that fly to Australia from Portland according to our data. United Airlines is the first choice among our users, with 67% of people opting to fly with this airline when travelling to Australia. Keep in mind that there are 3 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 Portland to Australia?

Alaska Airlines and United Airlines are the most popular carriers operating 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?

As of October 2026, there are 3 operators available to choose from for flights from Portland Airport to Australia.

How old do you have to be to fly from Portland 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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Portland 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 licence, 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.

$752 Cheap Flights from Portland to Australia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Australia

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

15:15 - 09:35PDX Portland-SYD Sydney Kingsford Smith

23h 20m1 stop Vancouver Intl

10:20 - 18:30SYD Sydney Kingsford Smith-PDX Portland

26h 10m1 stop Vancouver Intl

$1,391Air Canada

Tue, 23 Feb - Tue, 16 Mar

15:15 - 09:35PDX Portland-SYD Sydney Kingsford Smith

23h 20m1 stop Vancouver Intl

11:20 - 14:41SYD Sydney Kingsford Smith-PDX Portland

22h 21m1 stop Vancouver Intl

$1,391Air Canada

Tue, 16 Feb - Wed, 24 Feb

19:10 - 09:35PDX Portland-SYD Sydney Kingsford Smith

19h 25m1 stop Vancouver Intl

07:30 - 09:25SYD Sydney Kingsford Smith-PDX Portland

19h 55m2 stops Brisbane Vancouver Intl

$1,414Air Canada

Tue, 23 Feb - Tue, 16 Mar

19:10 - 08:20PDX Portland-SYD Sydney Kingsford Smith

19h 10m1 stop Vancouver Intl

06:00 - 09:25SYD Sydney Kingsford Smith-PDX Portland

20h 25m2 stops Brisbane Vancouver Intl

$1,459Multiple Airlines

Thu, 1 Apr - Tue, 6 Apr

15:15 - 09:35PDX Portland-SYD Sydney Kingsford Smith

23h 20m1 stop Vancouver Intl

06:20 - 09:26SYD Sydney Kingsford Smith-PDX Portland

22h 06m2 stops Brisbane Vancouver Intl

$1,459Multiple Airlines

Thu, 12 Nov - Sun, 22 Nov

10:00 - 07:20PDX Portland-SYD Sydney Kingsford Smith

28h 20m1 stop Vancouver Intl

06:00 - 09:25SYD Sydney Kingsford Smith-PDX Portland

20h 25m2 stops Brisbane Vancouver Intl

$1,461Multiple Airlines

Wed, 14 Apr - Thu, 29 Apr

07:00 - 07:00PDX Portland-SYD Sydney Kingsford Smith

29h 00m1 stop Houston George Bush Intcntl

11:50 - 10:18SYD Sydney Kingsford Smith-PDX Portland

17h 28m1 stop San Francisco

$1,599United Airlines

Mon, 2 Nov - Wed, 25 Nov

16:05 - 09:20PDX Portland-SYD Sydney Kingsford Smith

23h 15m2 stops Denver Intl San Francisco

10:20 - 20:49SYD Sydney Kingsford Smith-PDX Portland

27h 29m2 stops San Francisco Denver Intl

$1,606United Airlines

Mon, 15 Mar - Tue, 6 Apr

17:45 - 09:00PDX Portland-SYD Sydney Kingsford Smith

20h 15m1 stop Los Angeles

11:10 - 13:48SYD Sydney Kingsford Smith-PDX Portland

21h 38m1 stop Los Angeles

$1,708Qantas Airways

Sat, 21 Nov - Sat, 5 Dec

17:40 - 10:20PDX Portland-SYD Sydney Kingsford Smith

21h 40m2 stops Los Angeles Brisbane

21:25 - 20:48SYD Sydney Kingsford Smith-PDX Portland

17h 23m1 stop San Francisco

$1,755Qantas Airways

Fri, 12 Mar - Fri, 19 Mar

Cheap last-minute flights

Enter your travel dates to find the best prices.

10:10 - 08:35PDX Portland-SYD Sydney Kingsford Smith

28h 25m1 stop Vancouver Intl

10:20 - 09:26SYD Sydney Kingsford Smith-PDX Portland

17h 06m1 stop Vancouver Intl

$1,499Air Canada

Sat, 24 Oct - Sat, 31 Oct

19:45 - 08:35PDX Portland-SYD Sydney Kingsford Smith

18h 50m1 stop Vancouver Intl

06:20 - 09:26SYD Sydney Kingsford Smith-PDX Portland

21h 06m2 stops Brisbane Vancouver Intl

$1,513Multiple Airlines

Sat, 24 Oct - Sat, 31 Oct

15:20 - 14:00PDX Portland-MEL Melbourne

28h 40m2 stops Vancouver Intl Brisbane

07:10 - 09:26MEL Melbourne-PDX Portland

21h 16m2 stops Brisbane Vancouver Intl

$1,527Air Canada

Wed, 28 Oct - Wed, 4 Nov

15:00 - 09:30PDX Portland-MEL Melbourne

24h 30m2 stops Phoenix Sky Harbor Intl Los Angeles

22:45 - 00:01MEL Melbourne-PDX Portland

20h 16m1 stop Los Angeles

$1,564American Airlines

Wed, 28 Oct - Wed, 4 Nov

14:30 - 09:30PDX Portland-MEL Melbourne

25h 00m1 stop Los Angeles

22:45 - 00:01MEL Melbourne-PDX Portland

20h 16m1 stop Los Angeles

$1,576Multiple Airlines

Wed, 28 Oct - Wed, 4 Nov

14:30 - 09:30PDX Portland-MEL Melbourne

25h 00m1 stop Los Angeles

22:45 - 00:01MEL Melbourne-PDX Portland

20h 16m1 stop Los Angeles

$1,577Multiple Airlines

Wed, 28 Oct - Wed, 4 Nov

11:58 - 09:30PDX Portland-MEL Melbourne

27h 32m2 stops Dallas/Fort Worth Los Angeles

11:00 - 19:32MEL Melbourne-PDX Portland

27h 32m2 stops Sydney Kingsford Smith Dallas/Fort Worth

$1,607American Airlines

Wed, 28 Oct - Wed, 4 Nov

09:00 - 08:30PDX Portland-MEL Melbourne

29h 30m2 stops Denver Intl Los Angeles

11:30 - 18:20MEL Melbourne-PDX Portland

25h 50m3 stops Los Angeles Denver Intl San Francisco

$1,614United Airlines

Wed, 28 Oct - Wed, 4 Nov

12:54 - 07:00PDX Portland-SYD Sydney Kingsford Smith

24h 06m1 stop Houston George Bush Intcntl

11:50 - 14:37SYD Sydney Kingsford Smith-PDX Portland

21h 47m1 stop San Francisco

$1,673United Airlines

Tue, 27 Oct - Fri, 27 Nov

17:03 - 09:00PDX Portland-SYD Sydney Kingsford Smith

21h 57m1 stop Los Angeles

11:10 - 16:34SYD Sydney Kingsford Smith-PDX Portland

23h 24m1 stop Los Angeles

$1,734Qantas Airways

Sat, 24 Oct - Sat, 31 Oct

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Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Qantas Airways

29 Oct

PDX17:18Portland

21h 42m

1 stop

SYD09:00Sydney Kingsford Smith

11 Nov

SYD11:10Sydney Kingsford Smith

21h 40m

1 stop

PDX13:50Portland

$1,663

Qantas Airways

24 Oct

PDX17:03Portland

21h 57m

1 stop

SYD09:00Sydney Kingsford Smith

31 Oct

SYD11:10Sydney Kingsford Smith

23h 24m

1 stop

PDX16:34Portland

$1,734

Qantas Airways

3 Nov

PDX18:04Portland

24h 56m

2 stops

ADL13:30Adelaide

6 Nov

ADL06:25Adelaide

25h 55m

2 stops

PDX13:50Portland

$1,873

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

29 Oct

PDX17:18Portland

19h 07m

1 stop

SYD06:25Sydney Kingsford Smith

11 Nov

SYD21:25Sydney Kingsford Smith

18h 22m

1 stop

PDX20:47Portland

$1,715

Alaska Airlines

29 Oct

PDX07:15Portland

29h 10m

1 stop

SYD06:25Sydney Kingsford Smith

11 Nov

SYD21:25Sydney Kingsford Smith

31h 03m

1 stop

PDX09:28Portland

$1,727

Alaska Airlines

29 Oct

PDX12:18Portland

24h 07m

2 stops

SYD06:25Sydney Kingsford Smith

11 Nov

SYD21:25Sydney Kingsford Smith

31h 03m

1 stop

PDX09:28Portland

$1,732

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Tue 23/2

15:15-09:35

1 stop23h 20m

Sydney Kingsford Smith

Tue 16/3

10:20-18:30

1 stop26h 10m

$1,391

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Tue 16/2

15:15-09:35

1 stop23h 20m

Sydney Kingsford Smith

Wed 24/2

11:20-14:41

1 stop22h 21m

$1,391

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Tue 23/2

19:10-09:35

1 stop19h 25m

Sydney Kingsford Smith

Tue 16/3

07:30-09:25

2 stops19h 55m

$1,414

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Thu 1/4

19:10-08:20

1 stop19h 10m

Sydney Kingsford Smith

Tue 6/4

06:00-09:25

2 stops20h 25m

$1,459

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Thu 12/11

15:15-09:35

1 stop23h 20m

Sydney Kingsford Smith

Sun 22/11

06:20-09:26

2 stops22h 06m

$1,459

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Wed 14/4

10:00-07:20

1 stop28h 20m

Sydney Kingsford Smith

Thu 29/4

06:00-09:25

2 stops20h 25m

$1,461

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Mon 2/11

07:00-07:00

1 stop29h 00m

Sydney Kingsford Smith

Wed 25/11

11:50-10:18

1 stop17h 28m

$1,599

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Mon 15/3

16:05-09:20

2 stops23h 15m

Sydney Kingsford Smith

Tue 6/4

10:20-20:49

2 stops27h 29m

$1,606

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Sat 21/11

17:45-09:00

1 stop20h 15m

Sydney Kingsford Smith

Sat 5/12

11:10-13:48

1 stop21h 38m

$1,708

Fastest return journey

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Fri 12/3

17:40-10:20

2 stops21h 40m

Sydney Kingsford Smith

Fri 19/3

21:25-20:48

1 stop17h 23m

$1,755

Flights are sorted by cheapest return 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?

In general, June is the cheapest month to fly from Portland to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,509. If you don’t want to visit Australia in June, then you should wait until April to fly from Portland, when ticket prices are also cheap, with an average price of $1,594.

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 $1,787 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Portland for as low as $1,604 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 38% 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

Best price found	$752
Fastest flight time	19h 04m
Direct flights	None

The best one-way flight to Australia from Portland in the past 72 hours is $752. The best return flight deal from Portland to Australia found on momondo in the last 72 hours is $1,391.

The fastest flight from Portland to Australia takes 19h 04m

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?
As of October 2026, there are 3 operators available to choose from for flights from Portland Airport to Australia.
How old do you have to be to fly from Portland 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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Portland 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 licence, 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 Portland to Australia

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

Airline	Rating	Free cancellation	Price
United Airlines	PriceFrom $730	Free cancellation	Rating 7.3 10,400 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,263	Free cancellation	Rating 7.1 11,791 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,266	Free cancellation	Rating 7.5 1,115 reviews	Search Qantas Airways flights

Why use momondo?

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

Finding the right flight to Australia from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Australia quick and easy, saving you time and money.

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

Flights from Portland to Australia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Portland to Australia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Portland to Australia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.