What is the cheapest airline that flies from Portland to Sydney Kingsford Smith?

Air Canada is the most popular carrier operating from Portland to Sydney Kingsford Smith

When did momondo last update prices for flights from Portland Airport to Sydney Kingsford Smith Airport?

Prices for flights from Portland Airport to Sydney Kingsford Smith Airport are updated daily.

How many operators does momondo search for flights from Portland Airport to Sydney Kingsford Smith Airport?

As of February 2026, there is 1 operator available to choose from for flights from Portland Airport to Sydney Kingsford Smith Airport.

How old do you have to be to fly from Portland Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The travel and health documents you'll need for your trip to Sydney Kingsford Smith Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$752 Cheap Flights from Portland to Sydney in 2026

1 adult

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Find the cheapest flights from Portland to Sydney

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:25 - 20:50

PDX

SYD

43h 25m

2 stops

11:20 - 17:13

SYD

PDX

24h 53m

1 stop

$1,312Qantas Airways

Mon, 23 Feb - Sat, 7 Mar

06:25 - 07:25

PDX

SYD

30h 00m

1 stop

19:15 - 22:02

SYD

PDX

44h 47m

2 stops

$1,322Qantas Airways

Thu, 26 Feb - Tue, 10 Mar

19:38 - 07:25

PDX

SYD

40h 47m

1 stop

14:00 - 11:52

SYD

PDX

39h 52m

2 stops

$1,361Multiple Airlines

Fri, 27 Feb - Wed, 11 Mar

06:25 - 07:35

PDX

SYD

54h 10m

2 stops

11:20 - 21:52

SYD

PDX

28h 32m

1 stop

$1,372Qantas Airways

Sun, 15 Feb - Sun, 15 Mar

09:53 - 07:30

PDX

SYD

28h 37m

1 stop

13:15 - 11:57

SYD

PDX

39h 42m

2 stops

$1,392Multiple Airlines

Sun, 26 Apr - Thu, 7 May

09:53 - 07:30

PDX

SYD

28h 37m

1 stop

13:15 - 11:57

SYD

PDX

39h 42m

2 stops

$1,404Multiple Airlines

Sun, 19 Apr - Thu, 30 Apr

19:38 - 07:25

PDX

SYD

40h 47m

1 stop

14:00 - 10:52

SYD

PDX

39h 52m

2 stops

$1,415Multiple Airlines

Fri, 27 Feb - Sun, 8 Mar

19:38 - 07:25

PDX

SYD

40h 47m

1 stop

14:00 - 09:35

SYD

PDX

37h 35m

2 stops

$1,425Multiple Airlines

Fri, 27 Feb - Tue, 10 Mar

09:53 - 07:30

PDX

SYD

28h 37m

1 stop

13:15 - 09:30

SYD

PDX

37h 15m

2 stops

$1,430Multiple Airlines

Sun, 26 Apr - Fri, 8 May

14:30 - 07:25

PDX

SYD

21h 55m

1 stop

14:00 - 11:52

SYD

PDX

39h 52m

2 stops

$1,431Multiple Airlines

Tue, 3 Mar - Wed, 11 Mar

Air New Zealand flights from Portland to Sydney

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

Air New Zealand

24 Feb

PDX19:05Portland

19h 30m

1 stop

SYD09:35Sydney Kingsford Smith

8 Mar

SYD11:20Sydney Kingsford Smith

25h 10m

1 stop

PDX17:30Portland

$1,672

Air New Zealand

5 Feb

PDX15:50Portland

25h 50m

2 stops

SYD12:40Sydney Kingsford Smith

7 Feb

SYD18:50Sydney Kingsford Smith

36h 44m

3 stops

PDX12:34Portland

$2,650

Air New Zealand

4 Feb

PDX13:35Portland

31h 20m

2 stops

SYD15:55Sydney Kingsford Smith

6 Feb

SYD18:50Sydney Kingsford Smith

36h 43m

3 stops

PDX12:33Portland

$2,805

Qantas Airways flights from Portland to Sydney

Our best Qantas Airways deals on Portland to Sydney flight tickets

Qantas Airways

23 Feb

PDX06:25Portland

43h 25m

2 stops

SYD20:50Sydney Kingsford Smith

7 Mar

SYD11:20Sydney Kingsford Smith

24h 53m

1 stop

PDX17:13Portland

$1,312

Qantas Airways

26 Feb

PDX06:25Portland

30h 00m

1 stop

SYD07:25Sydney Kingsford Smith

10 Mar

SYD19:15Sydney Kingsford Smith

44h 47m

2 stops

PDX22:02Portland

$1,322

Qantas Airways

15 Feb

PDX06:25Portland

54h 10m

2 stops

SYD07:35Sydney Kingsford Smith

15 Mar

SYD11:20Sydney Kingsford Smith

28h 32m

1 stop

PDX21:52Portland

$1,372

Fly from

Fly to

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 23/2

06:25-20:50

2 stops43h 25m

Sydney Kingsford Smith

Sat 7/3

11:20-17:13

1 stop24h 53m

$1,312

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 26/2

06:25-07:25

1 stop30h 00m

Sydney Kingsford Smith

Tue 10/3

19:15-22:02

2 stops44h 47m

$1,322

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 27/2

19:38-07:25

1 stop40h 47m

Sydney Kingsford Smith

Wed 11/3

14:00-11:52

2 stops39h 52m

$1,361

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 15/2

06:25-07:35

2 stops54h 10m

Sydney Kingsford Smith

Sun 15/3

11:20-21:52

1 stop28h 32m

$1,372

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 26/4

09:53-07:30

1 stop28h 37m

Sydney Kingsford Smith

Thu 7/5

13:15-11:57

2 stops39h 42m

$1,392

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 19/4

09:53-07:30

1 stop28h 37m

Sydney Kingsford Smith

Thu 30/4

13:15-11:57

2 stops39h 42m

$1,404

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 27/2

19:38-07:25

1 stop40h 47m

Sydney Kingsford Smith

Sun 8/3

14:00-10:52

2 stops39h 52m

$1,415

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 27/2

19:38-07:25

1 stop40h 47m

Sydney Kingsford Smith

Tue 10/3

14:00-09:35

2 stops37h 35m

$1,425

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 26/4

09:53-07:30

1 stop28h 37m

Sydney Kingsford Smith

Fri 8/5

13:15-09:30

2 stops37h 15m

$1,430

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 3/3

14:30-07:25

1 stop21h 55m

Sydney Kingsford Smith

Wed 11/3

14:00-11:52

2 stops39h 52m

$1,431

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 Sydney

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 Sydney?

The month of June is, on average, the cheapest month to fly to Sydney from Portland, with most prices found around $1,434. If you aren’t able to travel to Sydney during the month of June, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,434.

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

You are more likely to see cheaper flights to Sydney from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,686 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Portland for as low as $1,287 on momondo.

Can stopping save me money on Portland to Sydney flights?

You could potentially save up to 8% on your flight if you consider stops on a Portland to Sydney flight.

How have Portland to Sydney flight prices changed over time?

As of February 2026, prices for Portland to Sydney flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Portland to Sydney (PDX to SYD) flight deals and tips

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

Fastest flight time	17h 45m
Direct flights	None

The fastest flight from Portland to Sydney takes 17h 45m

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

Search flight deals

How far is Portland to Sydney Kingsford Smith by plane?
There are 12333.8 km between Portland and Sydney Kingsford Smith. By plane, this route typically takes 17h 45m.
When did momondo last update prices for flights from Portland Airport to Sydney Kingsford Smith Airport?
Prices for flights from Portland Airport to Sydney Kingsford Smith Airport are updated daily.
How many operators does momondo search for flights from Portland Airport to Sydney Kingsford Smith Airport?
As of February 2026, there is 1 operator available to choose from for flights from Portland Airport to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Portland Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The travel and health documents you'll need for your trip to Sydney Kingsford Smith Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Sydney is United Airlines (100% of total bookings).

Best airlines flying from Portland to Sydney

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

Airline	Rating	Free cancellation	Price
United Airlines	PriceFrom $1,318	Free cancellation	Rating 7.4 9,229 reviews		Search United Airlines flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Leura

Manly

Coogee

Bondi Beach

Cronulla

Randwick

Charlestown

Newport

Swansea

Why use momondo?

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

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

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

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

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

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 Sydney from Portland.

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

Yes. momondo can track prices for Portland to Sydney 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.