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 January 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.

$730 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 - 09:00

PDX

SYD

31h 35m1 stop

07:05 - 17:13

SYD

PDX

29h 08m2 stops

$1,394Qantas Airways

Sat, 14 Feb - Thu, 19 Feb

15:22 - 09:00

PDX

SYD

22h 38m1 stop

19:15 - 18:51

SYD

PDX

42h 36m2 stops

$1,428Qantas Airways

Tue, 27 Jan - Tue, 10 Feb

06:25 - 20:50

PDX

SYD

43h 25m2 stops

21:25 - 20:34

SYD

PDX

17h 09m1 stop

$1,438Qantas Airways

Thu, 26 Feb - Tue, 10 Mar

13:09 - 09:45

PDX

SYD

27h 36m2 stops

21:25 - 22:13

SYD

PDX

17h 48m1 stop

$1,475Qantas Airways

Sun, 19 Apr - Sun, 26 Apr

10:48 - 06:25

PDX

SYD

26h 37m1 stop

17:10 - 21:35

SYD

PDX

21h 25m2 stops

$1,487Qantas Airways

Tue, 21 Apr - Wed, 29 Apr

14:30 - 06:10

PDX

SYD

20h 40m1 stop

21:55 - 20:34

SYD

PDX

41h 39m2 stops

$1,492Qantas Airways

Sun, 1 Feb - Sun, 8 Feb

17:50 - 12:35

PDX

SYD

23h 45m2 stops

14:00 - 16:49

SYD

PDX

21h 49m2 stops

$1,499Multiple Airlines

Tue, 27 Jan - Tue, 10 Feb

17:50 - 12:35

PDX

SYD

23h 45m2 stops

14:00 - 16:49

SYD

PDX

21h 49m2 stops

$1,524Multiple Airlines

Thu, 22 Jan - Fri, 6 Feb

21:48 - 12:35

PDX

SYD

43h 47m2 stops

14:00 - 16:41

SYD

PDX

21h 41m2 stops

$1,536Multiple Airlines

Sat, 14 Feb - Thu, 19 Feb

21:30 - 11:55

PDX

SYD

45h 25m2 stops

13:15 - 20:35

SYD

PDX

24h 20m2 stops

$1,573Multiple Airlines

Sun, 19 Apr - Sun, 3 May

Air Canada flights from Portland to Sydney

Our best Air Canada deals on Portland to Sydney flight tickets

Air Canada

19 Apr

PDX15:15Portland

23h 05m

1 stop

SYD07:20Sydney Kingsford Smith

26 Apr

SYD09:20Sydney Kingsford Smith

16h 55m

1 stop

PDX09:15Portland

$1,607

Find similar

Air Canada

18 Feb

PDX15:15Portland

23h 20m

1 stop

SYD09:35Sydney Kingsford Smith

16 Mar

SYD10:25Sydney Kingsford Smith

22h 15m

1 stop

PDX14:40Portland

$1,609

Find similar

Air Canada

22 Feb

PDX19:05Portland

19h 30m

1 stop

SYD09:35Sydney Kingsford Smith

1 Mar

SYD11:20Sydney Kingsford Smith

16h 55m

1 stop

PDX09:15Portland

$1,613

Find similar

Qantas Airways flights from Portland to Sydney

Our best Qantas Airways deals on Portland to Sydney flight tickets

Qantas Airways

14 Feb

PDX06:25Portland

31h 35m

1 stop

SYD09:00Sydney Kingsford Smith

19 Feb

SYD07:05Sydney Kingsford Smith

29h 08m

2 stops

PDX17:13Portland

$1,394

Find similar

Qantas Airways

27 Jan

PDX15:22Portland

22h 38m

1 stop

SYD09:00Sydney Kingsford Smith

10 Feb

SYD19:15Sydney Kingsford Smith

42h 36m

2 stops

PDX18:51Portland

$1,428

Find similar

Qantas Airways

26 Feb

PDX06:25Portland

43h 25m

2 stops

SYD20:50Sydney Kingsford Smith

10 Mar

SYD21:25Sydney Kingsford Smith

17h 09m

1 stop

PDX20:34Portland

$1,438

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 14/2

06:25-09:00

1 stop31h 35m

Sydney Kingsford Smith

Thu 19/2

07:05-17:13

2 stops29h 08m

$1,394

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 27/1

15:22-09:00

1 stop22h 38m

Sydney Kingsford Smith

Tue 10/2

19:15-18:51

2 stops42h 36m

$1,428

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 26/2

06:25-20:50

2 stops43h 25m

Sydney Kingsford Smith

Tue 10/3

21:25-20:34

1 stop17h 09m

$1,438

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 19/4

13:09-09:45

2 stops27h 36m

Sydney Kingsford Smith

Sun 26/4

21:25-22:13

1 stop17h 48m

$1,475

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 21/4

10:48-06:25

1 stop26h 37m

Sydney Kingsford Smith

Wed 29/4

17:10-21:35

2 stops21h 25m

$1,487

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 1/2

14:30-06:10

1 stop20h 40m

Sydney Kingsford Smith

Sun 8/2

21:55-20:34

2 stops41h 39m

$1,492

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 27/1

17:50-12:35

2 stops23h 45m

Sydney Kingsford Smith

Tue 10/2

14:00-16:49

2 stops21h 49m

$1,499

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 22/1

17:50-12:35

2 stops23h 45m

Sydney Kingsford Smith

Fri 6/2

14:00-16:49

2 stops21h 49m

$1,524

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 14/2

21:48-12:35

2 stops43h 47m

Sydney Kingsford Smith

Thu 19/2

14:00-16:41

2 stops21h 41m

$1,536

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 19/4

21:30-11:55

2 stops45h 25m

Sydney Kingsford Smith

Sun 3/5

13:15-20:35

2 stops24h 20m

$1,573

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 $1,483. 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 $1,483.

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 $1,751 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 $1,331 on momondo.

Can stopping save me money on Portland to Sydney flights?

You could potentially save up to 15% 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 January 2026, prices for Portland to Sydney flights are approximately 18% 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	18h 09m
Direct flights	None

The fastest flight from Portland to Sydney takes 18h 09m

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 18h 09m.
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 January 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 $1,337	Free cancellation	Rating 7.4 9,139 reviews		Search United Airlines flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Leura

Manly

Bondi Beach

Coogee

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.