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

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 June 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.

$807 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 $1,966 to $1,408. The lowest price recently found on this route was $1,494.

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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.

19:45 - 07:20

PDX

SYD

18h 35m

1 stop

09:20 - 09:31

SYD

PDX

17h 11m

1 stop

$1,494Air Canada

Tue, 23 Jun - Sun, 2 Aug

19:45 - 07:20

PDX

SYD

18h 35m

1 stop

09:20 - 09:31

SYD

PDX

17h 11m

1 stop

$1,495Air Canada

Tue, 23 Jun - Sun, 2 Aug

10:10 - 08:20

PDX

SYD

28h 10m

1 stop

06:00 - 09:31

SYD

PDX

21h 31m

2 stops

$1,522Multiple Airlines

Tue, 6 Oct - Mon, 19 Oct

19:45 - 08:20

PDX

SYD

18h 35m

1 stop

06:00 - 09:31

SYD

PDX

21h 31m

2 stops

$1,523Multiple Airlines

Tue, 6 Oct - Mon, 19 Oct

15:30 - 14:55

PDX

SYD

30h 25m

2 stops

09:20 - 19:11

SYD

PDX

26h 51m

1 stop

$1,530Multiple Airlines

Mon, 22 Jun - Tue, 21 Jul

19:45 - 11:25

PDX

SYD

22h 40m

2 stops

09:20 - 09:31

SYD

PDX

17h 11m

1 stop

$1,532Multiple Airlines

Tue, 23 Jun - Sun, 2 Aug

19:45 - 07:20

PDX

SYD

18h 35m

1 stop

20:15 - 09:31

SYD

PDX

30h 16m

2 stops

$1,533Multiple Airlines

Wed, 9 Sep - Sat, 19 Sep

19:45 - 10:40

PDX

SYD

21h 55m

2 stops

09:20 - 19:06

SYD

PDX

26h 46m

1 stop

$1,539Air Canada

Tue, 1 Sep - Tue, 22 Sep

10:00 - 14:40

PDX

SYD

33h 40m

2 stops

11:20 - 09:26

SYD

PDX

17h 06m

1 stop

$1,540Air Canada

Sat, 21 Nov - Sun, 29 Nov

19:45 - 11:25

PDX

SYD

22h 40m

2 stops

06:00 - 09:31

SYD

PDX

20h 31m

2 stops

$1,544Multiple Airlines

Mon, 22 Jun - Tue, 21 Jul

Air Canada flights from Portland to Sydney

Our best Air Canada deals on Portland to Sydney flight tickets

Air Canada

23 June

PDX15:30Portland

22h 50m

1 stop

SYD07:20Sydney Kingsford Smith

2 Aug

SYD09:20Sydney Kingsford Smith

17h 11m

1 stop

PDX09:31Portland

$1,494

Air Canada

23 June

PDX19:45Portland

18h 35m

1 stop

SYD07:20Sydney Kingsford Smith

2 Aug

SYD09:20Sydney Kingsford Smith

17h 11m

1 stop

PDX09:31Portland

$1,495

Air Canada

21 Nov

PDX19:10Portland

23h 30m

2 stops

SYD13:40Sydney Kingsford Smith

29 Nov

SYD11:20Sydney Kingsford Smith

17h 06m

1 stop

PDX09:26Portland

$1,539

Qantas Airways flights from Portland to Sydney

Our best Qantas Airways deals on Portland to Sydney flight tickets

Qantas Airways

31 Aug

PDX17:55Portland

20h 35m

1 stop

SYD07:30Sydney Kingsford Smith

6 Oct

SYD18:50Sydney Kingsford Smith

19h 45m

1 stop

PDX20:35Portland

$1,613

Qantas Airways

9 June

PDX17:59Portland

19h 26m

1 stop

SYD06:25Sydney Kingsford Smith

11 June

SYD09:10Sydney Kingsford Smith

30h 17m

1 stop

PDX22:27Portland

$2,028

Qantas Airways

7 June

PDX07:00Portland

33h 45m

2 stops

SYD09:45Sydney Kingsford Smith

9 June

SYD13:40Sydney Kingsford Smith

25h 35m

2 stops

PDX22:15Portland

$2,053

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 23/6

19:45-07:20

1 stop18h 35m

Sydney Kingsford Smith

Sun 2/8

09:20-09:31

1 stop17h 11m

$1,494

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 23/6

19:45-07:20

1 stop18h 35m

Sydney Kingsford Smith

Sun 2/8

09:20-09:31

1 stop17h 11m

$1,495

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 6/10

10:10-08:20

1 stop28h 10m

Sydney Kingsford Smith

Mon 19/10

06:00-09:31

2 stops21h 31m

$1,522

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 6/10

19:45-08:20

1 stop18h 35m

Sydney Kingsford Smith

Mon 19/10

06:00-09:31

2 stops21h 31m

$1,523

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 22/6

15:30-14:55

2 stops30h 25m

Sydney Kingsford Smith

Tue 21/7

09:20-19:11

1 stop26h 51m

$1,530

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 23/6

19:45-11:25

2 stops22h 40m

Sydney Kingsford Smith

Sun 2/8

09:20-09:31

1 stop17h 11m

$1,532

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 9/9

19:45-07:20

1 stop18h 35m

Sydney Kingsford Smith

Sat 19/9

20:15-09:31

2 stops30h 16m

$1,533

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 1/9

19:45-10:40

2 stops21h 55m

Sydney Kingsford Smith

Tue 22/9

09:20-19:06

1 stop26h 46m

$1,539

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 21/11

10:00-14:40

2 stops33h 40m

Sydney Kingsford Smith

Sun 29/11

11:20-09:26

1 stop17h 06m

$1,540

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 22/6

19:45-11:25

2 stops22h 40m

Sydney Kingsford Smith

Tue 21/7

06:00-09:31

2 stops20h 31m

$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 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 $1,382. 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 $1,574.

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 $1,705 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 $1,432 on momondo.

Can stopping save me money on Portland to Sydney flights?

You could potentially save up to 11% 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 June 2026, prices for Portland to Sydney flights are approximately 25% 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 04m
Direct flights	None

The fastest flight from Portland to Sydney takes 18h 04m

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

Search flight deals

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 18h 04m.
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 June 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 $1,351	Free cancellation	Rating 7.4 9,777 reviews		Search United Airlines flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Manly

Lithgow

Coogee

Leura

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.