Which layover airport offers the lowest fares from Portland to Sydney?

Flights via Los Angeles (LAX) offer the lowest average round-trip price of $1,322.

Which layover airport has the shortest travel time from Portland to Sydney?

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 18h 27m.

Which layover airport has the shortest connection time from Portland to Sydney?

Vancouver (YVR) has the shortest average layover time for this route: 2h 05m.

What airlines fly to Sydney?

Air Canada, United Airlines and Delta are the top three most popular airlines that fly to Sydney from Portland according to our data. Air Canada is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 7 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Portland and Sydney?

Vancouver (YVR) was the most common stop: 52% of momondo users choosing 1-stop flights on this route connected there.

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

Qantas Airways, American Airlines, and Delta 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 November 2025, there are 7 operators 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$476 Cheap Flights from Portland to Sydney in 2025/26

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

Prices are currently typical for flights on this route. Typical prices usually range from $960 to $1,226. The lowest price recently found on this route was $1,058.

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2:30 pm - 6:10 amPDX-SYD

20h 40m1 stop

8:00 am - 5:11 pmSYD-PDX

28h 11m2 stops

$1,015Qantas Airways

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Fri, Feb 6 - Mon, Feb 23

4:51 pm - 6:10 amPDX-SYD

18h 19m1 stop

10:00 pm - 12:21 pmSYD-PDX

33h 21m2 stops

$1,020Qantas Airways

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Fri, Feb 6 - Sat, Mar 7

4:51 pm - 6:10 amPDX-SYD

18h 19m1 stop

8:30 am - 5:11 pmSYD-PDX

27h 41m2 stops

$1,035Qantas Airways

Find Deal

Fri, Feb 6 - Mon, Feb 23

7:00 pm - 8:35 amPDX-SYD

19h 35m1 stop

10:20 am - 6:30 pmSYD-PDX

26h 10m1 stop

$1,039Air Canada

Find Deal

Mon, Mar 9 - Tue, Mar 24

7:00 pm - 2:40 pmPDX-SYD

24h 40m2 stops

8:00 am - 2:40 pmSYD-PDX

24h 40m2 stops

$1,073Air Canada

Find Deal

Wed, Mar 4 - Wed, Mar 11

7:10 am - 7:45 pmPDX-SYD

18h 35m1 stop

9:40 pm - 6:11 amSYD-PDX

26h 31m2 stops

$1,148Alaska Airlines

Find Deal

Mon, Mar 9 - Tue, Mar 24

7:00 am - 7:45 pmPDX-SYD

17h 45m1 stop

9:40 pm - 5:25 amSYD-PDX

26h 45m1 stop

$1,150Hawaiian Airlines

Find Deal

Fri, Nov 28 - Thu, Dec 11

7:10 am - 7:45 pmPDX-SYD

17h 35m1 stop

9:40 pm - 4:20 amSYD-PDX

25h 40m2 stops

$1,159Alaska Airlines

Find Deal

Mon, Feb 23 - Sat, Mar 7

5:42 pm - 9:00 amPDX-SYD

20h 18m1 stop

5:45 pm - 9:24 pmSYD-PDX

22h 39m1 stop

$1,197American Airlines

Find Deal

Sun, Nov 30 - Sun, Dec 21

3:15 pm - 9:00 amPDX-SYD

22h 45m2 stops

11:20 am - 5:11 pmSYD-PDX

24h 51m1 stop

$1,201American Airlines

Find Deal

Sun, Nov 30 - Sun, Dec 21

Air Canada flights from Portland to Sydney

Our best Air Canada deals on Portland to Sydney flight tickets

Air Canada

Mar 9

PDX7:00 pmPortland

19h 35m

1 stop

SYD8:35 amSydney Kingsford Smith

Mar 24

SYD10:20 amSydney Kingsford Smith

26h 10m

1 stop

PDX6:30 pmPortland

$1,039

Find similar

Air Canada

Mar 4

PDX7:00 pmPortland

24h 40m

2 stops

SYD2:40 pmSydney Kingsford Smith

Mar 11

SYD8:00 amSydney Kingsford Smith

24h 40m

2 stops

PDX2:40 pmPortland

$1,073

Find similar

Air Canada

Feb 6

PDX3:15 pmPortland

23h 20m

1 stop

SYD9:35 amSydney Kingsford Smith

Feb 23

SYD11:20 amSydney Kingsford Smith

26h 10m

1 stop

PDX6:30 pmPortland

$1,081

Find similar

Qantas Airways flights from Portland to Sydney

Our best Qantas Airways deals on Portland to Sydney flight tickets

Qantas Airways

Feb 6

PDX2:30 pmPortland

20h 40m

1 stop

SYD6:10 amSydney Kingsford Smith

Feb 23

SYD8:00 amSydney Kingsford Smith

28h 11m

2 stops

PDX5:11 pmPortland

$1,015

Find similar

Qantas Airways

Feb 6

PDX4:51 pmPortland

18h 19m

1 stop

SYD6:10 amSydney Kingsford Smith

Mar 7

SYD10:00 pmSydney Kingsford Smith

33h 21m

2 stops

PDX12:21 pmPortland

$1,020

Find similar

Qantas Airways

Feb 6

PDX4:51 pmPortland

18h 19m

1 stop

SYD6:10 amSydney Kingsford Smith

Feb 23

SYD8:30 amSydney Kingsford Smith

27h 41m

2 stops

PDX5:11 pmPortland

$1,035

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 2/6

2:30 pm-6:10 am

1 stop20h 40m

Sydney Kingsford Smith

Mon 2/23

8:00 am-5:11 pm

2 stops28h 11m

$1,015

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 2/6

4:51 pm-6:10 am

1 stop18h 19m

Sydney Kingsford Smith

Sat 3/7

10:00 pm-12:21 pm

2 stops33h 21m

$1,020

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 2/6

4:51 pm-6:10 am

1 stop18h 19m

Sydney Kingsford Smith

Mon 2/23

8:30 am-5:11 pm

2 stops27h 41m

$1,035

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 3/9

7:00 pm-8:35 am

1 stop19h 35m

Sydney Kingsford Smith

Tue 3/24

10:20 am-6:30 pm

1 stop26h 10m

$1,039

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 3/4

7:00 pm-2:40 pm

2 stops24h 40m

Sydney Kingsford Smith

Wed 3/11

8:00 am-2:40 pm

2 stops24h 40m

$1,073

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 3/9

7:10 am-7:45 pm

1 stop18h 35m

Sydney Kingsford Smith

Tue 3/24

9:40 pm-6:11 am

2 stops26h 31m

$1,148

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 11/28

7:00 am-7:45 pm

1 stop17h 45m

Sydney Kingsford Smith

Thu 12/11

9:40 pm-5:25 am

1 stop26h 45m

$1,150

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 2/23

7:10 am-7:45 pm

1 stop17h 35m

Sydney Kingsford Smith

Sat 3/7

9:40 pm-4:20 am

2 stops25h 40m

$1,159

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 11/30

5:42 pm-9:00 am

1 stop20h 18m

Sydney Kingsford Smith

Sun 12/21

5:45 pm-9:24 pm

1 stop22h 39m

$1,197

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 11/30

3:15 pm-9:00 am

2 stops22h 45m

Sydney Kingsford Smith

Sun 12/21

11:20 am-5:11 pm

1 stop24h 51m

$1,201

Flights are sorted by cheapest round-trip 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

Layovers

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

What is the cheapest month to fly to Sydney?

In general, September is the cheapest month to fly from Portland to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $993. If you are unable to visit Sydney during the month of September, then departing from Portland during the month August is also very affordable. Most momondo users find prices during this month for around $1,005.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Portland to Sydney is on a Saturday when prices can be found for as low as $1,040. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,146.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the morning. momondo users have found flights departing from Portland to Sydney in the morning for as low as $1,060. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly at noon, with an average ticket price of $1,135. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,116 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Portland for as low as $1,017 on momondo.

Can stopping save me money on Portland to Sydney flights?

You could potentially save up to 1% 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 November 2025, prices for Portland to Sydney flights are approximately 32% 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 round-trip 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

Direct flights	None

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

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How far is Portland to Sydney Kingsford Smith by plane?
A flight from Portland to Sydney Kingsford Smith will travel around 7663.9 mi. A reasonable flight in good conditions will take 17h 35m.
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 November 2025, there are 7 operators 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
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 Air Canada (28% of total bookings). The next most popular airlines are United Airlines (28%), Delta (15%), and Alaska Airlines (11%).

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
Delta	PriceFrom $545	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $550	Free Cancellation	Rating 7.8 2,804 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $840	Free Cancellation	Rating 7.1 10,416 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $898	Free Cancellation	Rating 7.5 929 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $912	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
American Airlines	PriceFrom $952	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $999	Free Cancellation	Rating 8.0 11,246 reviews	Search Alaska Airlines flights

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Coogee

Cronulla

Manly

Penrith

Leura

Lithgow

Charlestown

Terrigal

Swansea

Why use momondo?

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

Finding the right flight to Sydney from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.

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

Flights from Portland to Sydney with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

If you are not ready to book a flight from Portland to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Portland to Sydney from $476

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Sydney departing on 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from Portland to Sydney

Our best Air Canada deals on Portland to Sydney flight tickets

Qantas Airways flights from Portland to Sydney

Our best Qantas Airways deals on Portland to Sydney flight tickets

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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

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

What is the cheapest month to fly to Sydney?

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Portland to Sydney is on a Saturday when prices can be found for as low as $1,040. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,146.

What is the cheapest time of day to depart on your flight to Sydney?

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

Can stopping save me money on Portland to Sydney flights?

You could potentially save up to 1% 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 November 2025, prices for Portland to Sydney flights are approximately 32% cheaper when compared to flights at the same time last year.

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

Qantas Airways, American Airlines, and Delta are the most popular carriers operating from Portland to Sydney Kingsford Smith

What airlines fly to Sydney?

Which airport is the most popular layover for flights between Portland and Sydney?

Vancouver (YVR) was the most common stop: 52% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Portland to Sydney?

Flights via Los Angeles (LAX) offer the lowest average round-trip price of $1,322.

Which layover airport has the shortest travel time from Portland to Sydney?

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 18h 27m.

Which layover airport has the shortest connection time from Portland to Sydney?

Vancouver (YVR) has the shortest average layover time for this route: 2h 05m.

When to book flights from Portland to Sydney

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

Direct flights

How far is Portland to Sydney Kingsford Smith by plane?

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

How many operators does momondo search 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?

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

What is the most popular airline from Portland to Sydney?

Best airlines flying from Portland to Sydney

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

Traveling to a place near Sydney?

Why use momondo?

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

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

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

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

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales