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

United Airlines, Air Canada, and Qantas Airways 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 November 2025, there is 1 operator 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.

$662 Cheap Flights from Portland to Australia in 2025/26

1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Portland to Australia

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

15:15 - 08:45PDX-BNE

23h 30m1 stop

10:45 - 09:15BNE-PDX

16h 30m1 stop

$1,226Air Canada

Find Deal

Sun, 11 Jan - Sat, 24 Jan

19:00 - 13:25PDX-BNE

24h 25m2 stops

09:45 - 18:30BNE-PDX

25h 45m1 stop

$1,251Multiple Airlines

Find Deal

Thu, 5 Mar - Thu, 19 Mar

06:40 - 05:00PDX-BNE

28h 20m1 stop

17:10 - 22:00BNE-PDX

22h 50m1 stop

$1,306American Airlines

Find Deal

Sat, 21 Feb - Sun, 1 Mar

11:48 - 05:00PDX-BNE

23h 12m2 stops

17:10 - 00:16BNE-PDX

25h 06m2 stops

$1,313American Airlines

Find Deal

Sat, 21 Feb - Sun, 1 Mar

10:56 - 07:30PDX-BNE

26h 34m2 stops

11:40 - 12:38BNE-PDX

18h 58m1 stop

$1,348United Airlines

Find Deal

Thu, 19 Feb - Mon, 23 Feb

14:30 - 09:30PDX-MEL

24h 00m1 stop

12:00 - 13:25MEL-PDX

20h 25m1 stop

$1,443Qantas Airways

Find Deal

Tue, 24 Feb - Sat, 7 Mar

15:50 - 06:45PDX-MEL

21h 55m1 stop

09:45 - 22:31MEL-PDX

29h 46m1 stop

$1,453Qantas Airways

Find Deal

Sat, 4 Apr - Sun, 3 May

10:30 - 06:55PDX-PER

29h 25m2 stops

09:15 - 13:45PER-PDX

67h 30m2 stops

$2,113Cathay Pacific

Find Deal

Thu, 19 Mar - Mon, 20 Apr

10:30 - 06:55PDX-PER

29h 25m2 stops

09:15 - 13:45PER-PDX

67h 30m2 stops

$2,125Cathay Pacific

Find Deal

Thu, 19 Mar - Mon, 20 Apr

13:40 - 13:20PDX-OOL

29h 40m2 stops

07:20 - 18:55OOL-PDX

29h 35m3 stops

$2,387United Airlines

Find Deal

Thu, 26 Feb - Mon, 2 Mar

Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Qantas Airways

1 Dec

PDX16:30Portland

22h 00m

1 stop

MEL09:30Melbourne

15 Dec

MEL12:00Melbourne

24h 28m

1 stop

PDX17:28Portland

$1,407

Find similar

Qantas Airways

24 Feb

PDX14:30Portland

24h 00m

1 stop

MEL09:30Melbourne

7 Mar

MEL12:00Melbourne

20h 25m

1 stop

PDX13:25Portland

$1,443

Find similar

Qantas Airways

4 Apr

PDX15:50Portland

21h 55m

1 stop

MEL06:45Melbourne

3 May

MEL09:45Melbourne

29h 46m

1 stop

PDX22:31Portland

$1,453

Find similar

Air Canada flights from Portland to Australia

Our best Air Canada deals on Portland to Australia flight tickets

Air Canada

11 Jan

PDX15:15Portland

23h 30m

1 stop

BNE08:45Brisbane

24 Jan

BNE10:45Brisbane

16h 30m

1 stop

PDX09:15Portland

$1,226

Find similar

Air Canada

11 Jan

PDX19:00Portland

19h 45m

1 stop

BNE08:45Brisbane

24 Jan

BNE06:05Brisbane

21h 10m

2 stops

PDX09:15Portland

$1,266

Find similar

Air Canada

20 Jan

PDX09:50Portland

28h 55m

1 stop

BNE08:45Brisbane

31 Jan

BNE10:45Brisbane

16h 30m

1 stop

PDX09:15Portland

$1,282

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 11/1

15:15-08:45

1 stop23h 30m

Brisbane

Sat 24/1

10:45-09:15

1 stop16h 30m

$1,226

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 5/3

19:00-13:25

2 stops24h 25m

Brisbane

Thu 19/3

09:45-18:30

1 stop25h 45m

$1,251

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 21/2

06:40-05:00

1 stop28h 20m

Brisbane

Sun 1/3

17:10-22:00

1 stop22h 50m

$1,306

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 21/2

11:48-05:00

2 stops23h 12m

Brisbane

Sun 1/3

17:10-00:16

2 stops25h 06m

$1,313

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 19/2

10:56-07:30

2 stops26h 34m

Brisbane

Mon 23/2

11:40-12:38

1 stop18h 58m

$1,348

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 24/2

14:30-09:30

1 stop24h 00m

Melbourne

Sat 7/3

12:00-13:25

1 stop20h 25m

$1,443

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 4/4

15:50-06:45

1 stop21h 55m

Melbourne

Sun 3/5

09:45-22:31

1 stop29h 46m

$1,453

PortlandPerth

PDX - PER

PDXPER

Portland

Thu 19/3

10:30-06:55

2 stops29h 25m

Perth

Mon 20/4

09:15-13:45

2 stops67h 30m

$2,113

PortlandPerth

PDX - PER

PDXPER

Portland

Thu 19/3

10:30-06:55

2 stops29h 25m

Perth

Mon 20/4

09:15-13:45

2 stops67h 30m

$2,125

PortlandCoolangatta

PDX - OOL

PDXOOL

Portland

Thu 26/2

13:40-13:20

2 stops29h 40m

Coolangatta Gold Coast

Mon 2/3

07:20-18:55

3 stops29h 35m

$2,387

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, September 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 $1,537. If you don’t want to visit Australia in September, then you should wait until June to fly from Portland, when ticket prices are also cheap, with an average price of $1,539.

What is the cheapest day to depart on your flight to Australia?

On average, the least expensive day to fly to Australia from Portland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,252. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Portland to Australia on a Sunday will generally be more expensive and average around $2,034. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Australia?

According to our data, the cheapest time of day to fly to Australia is in the morning. momondo users have found flights departing from Portland to Australia in the morning for as low as $1,406. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Australia are more costly in the afternoon, with an average ticket price of $1,823. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight 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 $1,746 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 $1,399 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 15% 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	20h 40m
Direct flights	None

The fastest flight from Portland to Australia takes 20h 40m

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

Search flight deals

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 November 2025, there is 1 operator 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 $1,286	Free cancellation	Rating 7.4 9,046 reviews		Search United Airlines 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.

An easier way to manage your Australia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Fri 26/12

Fri 2/1

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia

Popular Cities in Australia

Look for other cheap flights to Sydney

Look for other cheap flights to Melbourne

Look for other cheap flights to Brisbanefrom $127

Look for other cheap flights to Perthfrom $347

Look for other cheap flights to Adelaide

Look for other cheap flights to Coolangattafrom $119

Look for other cheap flights to Cairnsfrom $181

Look for other cheap flights to Hobartfrom $142

Look for other cheap flights to Canberrafrom $206

Look for other cheap flights to Darwinfrom $353

Look for other cheap flights to Maroochydorefrom $122

Look for other cheap flights to Launcestonfrom $104

Cheap flights from Portland to Australia from $662

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Australia departing on 8/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Portland to Australia

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Air Canada flights from Portland to Australia

Our best Air Canada deals on Portland to Australia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Portland to Australia that are best for you.

See travel insights to Australia from

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

What is the cheapest month to fly to Australia?

What is the cheapest day to depart on your flight to Australia?

What is the cheapest time of day to depart on your flight to Australia?

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

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 15% on your flight if you consider stops on a Portland to Australia flight.

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

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

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

Direct flights

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

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

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

What documentation or ID do you need to fly to Australia?

Best airlines flying from Portland to Australia

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

Why use momondo?

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

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

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

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

An easier way to manage your Australia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Popular Cities in Australia

Popular flights according to clicks in the last 7 days on momondo