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

Air Canada and ANA 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 April 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.

$793 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 $2,033 to $1,530. The lowest price recently found on this route was $1,511.

1 adult

Discover deals from 900+ travel sites with momondo.

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.

17:37 - 11:50

PDX

SYD

25h 13m

2 stops

13:15 - 23:56

SYD

PDX

27h 41m

2 stops

$1,511Multiple Airlines

Mon, 3 Aug - Fri, 14 Aug

17:35 - 11:50

PDX

SYD

25h 15m

2 stops

13:15 - 22:51

SYD

PDX

26h 36m

2 stops

$1,529Multiple Airlines

Wed, 19 Aug - Wed, 2 Sep

14:50 - 11:50

PDX

SYD

28h 00m

2 stops

13:15 - 20:50

SYD

PDX

24h 35m

2 stops

$1,531Multiple Airlines

Sun, 10 May - Fri, 15 May

15:30 - 10:40

PDX

SYD

26h 10m

2 stops

09:20 - 19:06

SYD

PDX

26h 46m

1 stop

$1,548Air Canada

Sat, 22 Aug - Sat, 3 Oct

07:00 - 18:50

PDX

SYD

18h 50m

1 stop

20:45 - 20:48

SYD

PDX

17h 03m

1 stop

$1,553Multiple Airlines

Mon, 11 May - Sun, 17 May

17:34 - 18:50

PDX

SYD

32h 16m

1 stop

20:45 - 20:50

SYD

PDX

17h 05m

1 stop

$1,557Alaska Airlines

Sun, 7 Jun - Sun, 14 Jun

14:50 - 11:50

PDX

SYD

28h 00m

2 stops

13:15 - 20:50

SYD

PDX

24h 35m

2 stops

$1,562Multiple Airlines

Fri, 4 Sep - Sun, 13 Sep

17:35 - 11:50

PDX

SYD

25h 15m

2 stops

13:15 - 20:36

SYD

PDX

24h 21m

2 stops

$1,563Multiple Airlines

Fri, 4 Sep - Sun, 13 Sep

17:49 - 11:50

PDX

SYD

25h 01m

2 stops

13:15 - 20:35

SYD

PDX

24h 20m

2 stops

$1,567Multiple Airlines

Sun, 10 May - Fri, 15 May

17:30 - 18:50

PDX

SYD

32h 20m

1 stop

20:45 - 20:48

SYD

PDX

17h 03m

1 stop

$1,570Alaska Airlines

Sun, 10 May - Sun, 17 May

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

Qantas Airways flights from Portland to Sydney

Our best Qantas Airways deals on Portland to Sydney flight tickets

Qantas Airways

21 Aug

PDX17:50Portland

19h 35m

1 stop

SYD06:25Sydney Kingsford Smith

3 Oct

SYD06:25Sydney Kingsford Smith

24h 01m

2 stops

PDX13:26Portland

$1,605

Qantas Airways

28 Apr

PDX17:51Portland

19h 34m

1 stop

SYD06:25Sydney Kingsford Smith

7 May

SYD16:25Sydney Kingsford Smith

22h 10m

2 stops

PDX21:35Portland

$7,875

Qantas Airways

28 Apr

PDX17:51Portland

19h 34m

1 stop

SYD06:25Sydney Kingsford Smith

7 May

SYD13:40Sydney Kingsford Smith

24h 55m

2 stops

PDX21:35Portland

$7,877

Alaska Airlines flights from Portland to Sydney

Our best Alaska Airlines deals on Portland to Sydney flight tickets

Alaska Airlines

7 June

PDX17:34Portland

32h 16m

1 stop

SYD18:50Sydney Kingsford Smith

14 June

SYD20:45Sydney Kingsford Smith

17h 05m

1 stop

PDX20:50Portland

$1,557

Alaska Airlines

10 May

PDX17:30Portland

32h 20m

1 stop

SYD18:50Sydney Kingsford Smith

17 May

SYD20:45Sydney Kingsford Smith

17h 03m

1 stop

PDX20:48Portland

$1,570

Alaska Airlines

20 May

PDX08:00Portland

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

24 May

SYD20:45Sydney Kingsford Smith

17h 03m

1 stop

PDX20:48Portland

$1,574

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 3/8

17:37-11:50

2 stops25h 13m

Sydney Kingsford Smith

Fri 14/8

13:15-23:56

2 stops27h 41m

$1,511

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 19/8

17:35-11:50

2 stops25h 15m

Sydney Kingsford Smith

Wed 2/9

13:15-22:51

2 stops26h 36m

$1,529

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 10/5

14:50-11:50

2 stops28h 00m

Sydney Kingsford Smith

Fri 15/5

13:15-20:50

2 stops24h 35m

$1,531

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 22/8

15:30-10:40

2 stops26h 10m

Sydney Kingsford Smith

Sat 3/10

09:20-19:06

1 stop26h 46m

$1,548

Fastest return journey

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 11/5

07:00-18:50

1 stop18h 50m

Sydney Kingsford Smith

Sun 17/5

20:45-20:48

1 stop17h 03m

$1,553

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 7/6

17:34-18:50

1 stop32h 16m

Sydney Kingsford Smith

Sun 14/6

20:45-20:50

1 stop17h 05m

$1,557

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 4/9

14:50-11:50

2 stops28h 00m

Sydney Kingsford Smith

Sun 13/9

13:15-20:50

2 stops24h 35m

$1,562

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 4/9

17:35-11:50

2 stops25h 15m

Sydney Kingsford Smith

Sun 13/9

13:15-20:36

2 stops24h 21m

$1,563

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 10/5

17:49-11:50

2 stops25h 01m

Sydney Kingsford Smith

Fri 15/5

13:15-20:35

2 stops24h 20m

$1,567

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 10/5

17:30-18:50

1 stop32h 20m

Sydney Kingsford Smith

Sun 17/5

20:45-20:48

1 stop17h 03m

$1,570

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 $1,411. 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 $1,563.

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 $1,264 on momondo.

Can stopping save me money on Portland to Sydney flights?

You could potentially save up to 10% 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 April 2026, prices for Portland to Sydney flights are approximately 1% more expensive 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 50m
Direct flights	None

The fastest flight from Portland to Sydney takes 17h 50m

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 17h 50m.
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 April 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 $1,342	Free cancellation	Rating 7.4 9,643 reviews		Search United Airlines flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Manly

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.