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

ANA, Alaska Airlines, and Air Canada are the most popular carriers 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 July 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.

$813 Cheap Flights from Portland to Sydney in 2026

Q: What is the typical price of a round-trip flight between Portland and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $1,651 to $1,884. The lowest price recently found on this route was $1,491.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Sydney

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

07:46 - 18:50

PDX

SYD

18h 04m

1 stop

20:45 - 20:46

SYD

PDX

17h 01m

1 stop

$1,491Alaska Airlines

Mon, 17 Aug - Sun, 30 Aug

19:45 - 07:20

PDX

SYD

18h 35m

1 stop

09:20 - 19:11

SYD

PDX

26h 51m

1 stop

$1,497Air Canada

Sun, 9 Aug - Sun, 16 Aug

17:30 - 07:30

PDX

SYD

21h 00m

1 stop

13:15 - 14:27

SYD

PDX

42h 12m

2 stops

$1,499Multiple Airlines

Fri, 11 Sep - Thu, 17 Sep

13:53 - 07:05

PDX

SYD

24h 12m

1 stop

17:50 - 23:59

SYD

PDX

23h 09m

1 stop

$1,519Qantas Airways

Wed, 19 Aug - Tue, 25 Aug

17:03 - 09:00

PDX

SYD

21h 57m

1 stop

11:15 - 13:50

SYD

PDX

21h 35m

1 stop

$1,521Multiple Airlines

Wed, 28 Oct - Mon, 2 Nov

17:03 - 09:00

PDX

SYD

21h 57m

1 stop

11:15 - 11:33

SYD

PDX

18h 18m

1 stop

$1,524Multiple Airlines

Tue, 27 Oct - Sun, 1 Nov

19:45 - 07:20

PDX

SYD

18h 35m

1 stop

07:00 - 09:31

SYD

PDX

19h 31m

2 stops

$1,525Multiple Airlines

Sun, 9 Aug - Sun, 16 Aug

08:00 - 19:45

PDX

SYD

17h 45m

1 stop

21:40 - 20:49

SYD

PDX

18h 09m

1 stop

$1,529Alaska Airlines

Wed, 28 Oct - Sun, 1 Nov

17:08 - 07:05

PDX

SYD

20h 57m

1 stop

17:50 - 20:48

SYD

PDX

19h 58m

1 stop

$1,534Multiple Airlines

Mon, 3 Aug - Mon, 17 Aug

10:48 - 06:25

PDX

SYD

25h 37m

1 stop

14:00 - 16:35

SYD

PDX

21h 35m

2 stops

$1,537Multiple Airlines

Wed, 28 Oct - Tue, 3 Nov

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Air Canada flights from Portland to Sydney

Our best Air Canada deals on Portland to Sydney flight tickets

Air Canada

28 Oct

PDX19:10Portland

19h 25m

1 stop

SYD08:35Sydney Kingsford Smith

2 Nov

SYD11:20Sydney Kingsford Smith

22h 21m

1 stop

PDX14:41Portland

$1,494

Air Canada

6 Oct

PDX19:45Portland

18h 35m

1 stop

SYD08:20Sydney Kingsford Smith

19 Oct

SYD10:20Sydney Kingsford Smith

17h 11m

1 stop

PDX09:31Portland

$1,497

Air Canada

28 Oct

PDX19:10Portland

19h 25m

1 stop

SYD08:35Sydney Kingsford Smith

2 Nov

SYD09:00Sydney Kingsford Smith

19h 26m

2 stops

PDX09:26Portland

$1,515

Alaska Airlines flights from Portland to Sydney

Our best Alaska Airlines deals on Portland to Sydney flight tickets

Alaska Airlines

17 Aug

PDX07:46Portland

18h 04m

1 stop

SYD18:50Sydney Kingsford Smith

30 Aug

SYD20:45Sydney Kingsford Smith

17h 01m

1 stop

PDX20:46Portland

$1,491

Alaska Airlines

28 Oct

PDX08:00Portland

17h 45m

1 stop

SYD19:45Sydney Kingsford Smith

1 Nov

SYD21:40Sydney Kingsford Smith

18h 09m

1 stop

PDX20:49Portland

$1,529

Alaska Airlines

26 Oct

PDX08:00Portland

17h 45m

1 stop

SYD19:45Sydney Kingsford Smith

31 Oct

SYD21:40Sydney Kingsford Smith

26h 39m

1 stop

PDX06:19Portland

$1,564

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 17/8

07:46-18:50

1 stop18h 04m

Sydney Kingsford Smith

Sun 30/8

20:45-20:46

1 stop17h 01m

$1,491

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 9/8

19:45-07:20

1 stop18h 35m

Sydney Kingsford Smith

Sun 16/8

09:20-19:11

1 stop26h 51m

$1,497

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 11/9

17:30-07:30

1 stop21h 00m

Sydney Kingsford Smith

Thu 17/9

13:15-14:27

2 stops42h 12m

$1,499

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 19/8

13:53-07:05

1 stop24h 12m

Sydney Kingsford Smith

Tue 25/8

17:50-23:59

1 stop23h 09m

$1,519

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 28/10

17:03-09:00

1 stop21h 57m

Sydney Kingsford Smith

Mon 2/11

11:15-13:50

1 stop21h 35m

$1,521

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 27/10

17:03-09:00

1 stop21h 57m

Sydney Kingsford Smith

Sun 1/11

11:15-11:33

1 stop18h 18m

$1,524

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 9/8

19:45-07:20

1 stop18h 35m

Sydney Kingsford Smith

Sun 16/8

07:00-09:31

2 stops19h 31m

$1,525

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 28/10

08:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Sun 1/11

21:40-20:49

1 stop18h 09m

$1,529

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 3/8

17:08-07:05

1 stop20h 57m

Sydney Kingsford Smith

Mon 17/8

17:50-20:48

1 stop19h 58m

$1,534

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 28/10

10:48-06:25

1 stop25h 37m

Sydney Kingsford Smith

Tue 3/11

14:00-16:35

2 stops21h 35m

$1,537

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 typical price of a round-trip flight between Portland and Sydney?

What is the cheapest month to fly to Sydney?

The month of September is, on average, the cheapest month to fly to Sydney from Portland, with most prices found around $1,477. If you aren’t able to travel to Sydney during the month of September, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $1,594.

How far in advance should I book a flight from Portland 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 $1,740 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 $1,497 on momondo.

How have Portland to Sydney flight prices changed over time?

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	23h 12m
Direct flights	None

The fastest flight from Portland to Sydney takes 23h 12m

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

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Frequently asked questions about flying from Portland to Sydney

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 23h 12m.
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 July 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 $2,060	Free cancellation	Rating 7.4 10,020 reviews		Search United Airlines flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Manly

Lithgow

Coogee

Leura

Cronulla

Randwick

Bondi Beach

Charlestown

Swansea

Newport

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.