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

Qantas Airways, Air Canada, and Air New Zealand 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 September 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.

$810 Cheap Flights from Portland to Australia in 2025

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

15:54 - 07:30PDX-BNE

21h 36m1 stop

11:40 - 23:06BNE-PDX

29h 26m1 stop

$1,463United Airlines

Find Deal

Thu, 25 Dec - Thu, 15 Jan

05:45 - 08:30PDX-MEL

32h 45m2 stops

12:00 - 14:42MEL-PDX

20h 42m1 stop

$1,466United Airlines

Find Deal

Fri, 13 Mar - Thu, 26 Mar

19:00 - 15:15PDX-MEL

25h 15m2 stops

06:40 - 09:15MEL-PDX

20h 35m2 stops

$1,484Air Canada

Find Deal

Sun, 1 Mar - Wed, 11 Mar

17:01 - 06:35PDX-SYD

20h 34m1 stop

09:25 - 11:45SYD-PDX

19h 20m1 stop

$1,484Delta

Find Deal

Wed, 24 Sep - Wed, 1 Oct

14:45 - 19:45PDX-SYD

34h 00m2 stops

21:40 - 00:03SYD-PDX

21h 23m2 stops

$1,488Hawaiian Airlines

Find Deal

Tue, 10 Feb - Sat, 28 Feb

19:00 - 08:35PDX-SYD

19h 35m1 stop

11:20 - 14:45SYD-PDX

22h 25m1 stop

$1,503Air Canada

Find Deal

Mon, 27 Oct - Mon, 3 Nov

16:00 - 19:45PDX-SYD

32h 45m2 stops

21:40 - 00:03SYD-PDX

21h 23m2 stops

$1,506Hawaiian Airlines

Find Deal

Tue, 10 Feb - Sat, 28 Feb

19:00 - 14:05PDX-MEL

24h 05m2 stops

06:00 - 09:35MEL-PDX

20h 35m2 stops

$1,508

Find Deal

Tue, 24 Feb - Tue, 26 May

19:00 - 14:05PDX-MEL

24h 05m2 stops

20:30 - 09:35MEL-PDX

30h 05m2 stops

$1,514

Find Deal

Tue, 24 Feb - Sun, 14 Jun

19:55 - 08:00PDX-MEL

41h 05m1 stop

10:00 - 19:26MEL-PDX

26h 26m1 stop

$1,544Delta

Find Deal

Tue, 24 Feb - Sun, 14 Jun

Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Qantas Airways

23 Sept

PDX14:50Portland

23h 15m

1 stop

SYD07:05Sydney Kingsford Smith

30 Sept

SYD09:10Sydney Kingsford Smith

21h 14m

1 stop

PDX13:24Portland

$1,411

Find similar

Qantas Airways

26 Sept

PDX17:35Portland

20h 30m

1 stop

SYD07:05Sydney Kingsford Smith

3 Oct

SYD17:45Sydney Kingsford Smith

20h 31m

1 stop

PDX21:16Portland

$1,554

Find similar

Qantas Airways

25 Sept

PDX14:50Portland

23h 40m

1 stop

SYD07:30Sydney Kingsford Smith

29 Sept

SYD09:10Sydney Kingsford Smith

21h 14m

1 stop

PDX13:24Portland

$1,613

Find similar

American Airlines flights from Portland to Australia

Our best American Airlines deals on Portland to Australia flight tickets

American Airlines

15 Sept

PDX08:31Portland

29h 34m

1 stop

SYD07:05Sydney Kingsford Smith

29 Sept

SYD09:10Sydney Kingsford Smith

29h 06m

1 stop

PDX21:16Portland

$1,463

Find similar

American Airlines

12 Feb

PDX15:43Portland

20h 42m

1 stop

SYD07:25Sydney Kingsford Smith

21 Feb

SYD14:05Sydney Kingsford Smith

27h 52m

1 stop

PDX22:57Portland

$1,702

Find similar

American Airlines

23 Oct

PDX15:19Portland

22h 46m

2 stops

SYD08:05Sydney Kingsford Smith

17 Nov

SYD11:20Sydney Kingsford Smith

24h 52m

1 stop

PDX17:12Portland

$1,706

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 25/12

15:54-07:30

1 stop21h 36m

Brisbane

Thu 15/1

11:40-23:06

1 stop29h 26m

$1,463

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Fri 13/3

05:45-08:30

2 stops32h 45m

Melbourne

Thu 26/3

12:00-14:42

1 stop20h 42m

$1,466

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 1/3

19:00-15:15

2 stops25h 15m

Melbourne

Wed 11/3

06:40-09:15

2 stops20h 35m

$1,484

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 24/9

17:01-06:35

1 stop20h 34m

Sydney Kingsford Smith

Wed 1/10

09:25-11:45

1 stop19h 20m

$1,484

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 10/2

14:45-19:45

2 stops34h 00m

Sydney Kingsford Smith

Sat 28/2

21:40-00:03

2 stops21h 23m

$1,488

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 27/10

19:00-08:35

1 stop19h 35m

Sydney Kingsford Smith

Mon 3/11

11:20-14:45

1 stop22h 25m

$1,503

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 10/2

16:00-19:45

2 stops32h 45m

Sydney Kingsford Smith

Sat 28/2

21:40-00:03

2 stops21h 23m

$1,506

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 24/2

19:00-14:05

2 stops24h 05m

Melbourne

Tue 26/5

06:00-09:35

2 stops20h 35m

$1,508

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 24/2

19:00-14:05

2 stops24h 05m

Melbourne

Sun 14/6

20:30-09:35

2 stops30h 05m

$1,514

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 24/2

19:55-08:00

1 stop41h 05m

Melbourne

Sun 14/6

10:00-19:26

1 stop26h 26m

$1,544

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 $1,502. If you don’t want to visit Australia in September, then you should wait until August to fly from Portland, when ticket prices are also cheap, with an average price of $1,506.

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 $1,216. 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 $1,975. 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 $1,366. 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 $1,771. 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 $1,687 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 $1,472 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 17% 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

Direct flights	None

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 September 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 $1,249	Free cancellation	Rating 7.4 8,931 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

Tue 14/10

Tue 21/10

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 $140

Look for other cheap flights to Perthfrom $352

Look for other cheap flights to Adelaide

Look for other cheap flights to Coolangattafrom $111

Look for other cheap flights to Cairnsfrom $174

Look for other cheap flights to Hobartfrom $129

Look for other cheap flights to Canberrafrom $213

Look for other cheap flights to Darwinfrom $275

Look for other cheap flights to Maroochydorefrom $122

Look for other cheap flights to Launcestonfrom $99

Cheap flights from Portland to Australia from $810

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 23/9. 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

American Airlines flights from Portland to Australia

Our best American Airlines 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 17% on your flight if you consider stops on a Portland to Australia flight.

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

Qantas Airways, Air Canada, and Air New Zealand 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

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