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

Flights via San Francisco (SFO) offer the lowest average round-trip price of $1,162.

What airlines fly to Sydney?

Air Canada, Qantas Airways and United Airlines 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 60% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 5 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: 67% 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?

Alaska Airlines and United Airlines are the most popular carriers operating from Portland to Sydney Kingsford Smith

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

Vancouver (YVR) has the shortest average layover time for this route: 1h 56m.

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

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 19h 00m.

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 October 2026, there are 5 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.

$528 Cheap Flights from Portland to Sydney in 2026/27

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7:15 pm - 4:40 pmPDX Portland-SYD Sydney Kingsford Smith

26h 25m2 stops Vancouver Intl Brisbane

11:20 am - 9:26 amSYD Sydney Kingsford Smith-PDX Portland

17h 06m1 stop Vancouver Intl

$998Air Canada

Mon, Nov 2 - Wed, Nov 25

7:15 pm - 4:40 pmPDX Portland-SYD Sydney Kingsford Smith

26h 25m2 stops Vancouver Intl Brisbane

9:00 am - 9:26 amSYD Sydney Kingsford Smith-PDX Portland

19h 26m2 stops Brisbane Vancouver Intl

$1,014Air Canada

Mon, Nov 2 - Wed, Nov 25

3:15 pm - 9:35 amPDX Portland-SYD Sydney Kingsford Smith

23h 20m1 stop Vancouver Intl

6:20 am - 9:26 amSYD Sydney Kingsford Smith-PDX Portland

22h 06m2 stops Brisbane Vancouver Intl

$1,025Multiple Airlines

Thu, Nov 12 - Sun, Nov 22

7:10 pm - 8:20 amPDX Portland-SYD Sydney Kingsford Smith

19h 10m1 stop Vancouver Intl

6:00 am - 9:25 amSYD Sydney Kingsford Smith-PDX Portland

20h 25m2 stops Brisbane Vancouver Intl

$1,025Multiple Airlines

Thu, Apr 1 - Tue, Apr 6

7:00 am - 7:00 amPDX Portland-SYD Sydney Kingsford Smith

29h 00m1 stop Houston George Bush Intcntl

11:50 am - 10:18 amSYD Sydney Kingsford Smith-PDX Portland

17h 28m1 stop San Francisco

$1,123United Airlines

Mon, Nov 2 - Wed, Nov 25

1:15 pm - 9:05 amPDX Portland-SYD Sydney Kingsford Smith

24h 50m2 stops Denver Intl Los Angeles

11:20 am - 6:24 pmSYD Sydney Kingsford Smith-PDX Portland

26h 04m3 stops Los Angeles Denver Intl San Francisco

$1,128United Airlines

Mon, Nov 2 - Wed, Nov 25

2:30 pm - 6:25 amPDX Portland-SYD Sydney Kingsford Smith

20h 55m1 stop San Francisco

9:25 pm - 8:48 pmSYD Sydney Kingsford Smith-PDX Portland

17h 23m1 stop San Francisco

$1,159Alaska Airlines

Fri, Mar 12 - Fri, Mar 19

10:48 am - 6:25 amPDX Portland-SYD Sydney Kingsford Smith

24h 37m1 stop Los Angeles

9:25 pm - 8:50 pmSYD Sydney Kingsford Smith-PDX Portland

18h 25m1 stop San Francisco

$1,160Alaska Airlines

Tue, Jan 26 - Fri, Feb 5

5:18 pm - 9:00 amPDX Portland-SYD Sydney Kingsford Smith

21h 42m1 stop Los Angeles

11:10 am - 1:50 pmSYD Sydney Kingsford Smith-PDX Portland

21h 40m1 stop Los Angeles

$1,168Qantas Airways

Thu, Oct 29 - Wed, Nov 11

5:40 pm - 10:20 amPDX Portland-SYD Sydney Kingsford Smith

21h 40m2 stops Los Angeles Brisbane

9:25 pm - 8:48 pmSYD Sydney Kingsford Smith-PDX Portland

17h 23m1 stop San Francisco

$1,233Qantas Airways

Fri, Mar 12 - Fri, Mar 19

Cheap last minute flights

Enter your travel dates to find the best prices.

5:03 pm - 9:00 amPDX Portland-SYD Sydney Kingsford Smith

21h 57m1 stop Los Angeles

11:10 am - 4:34 pmSYD Sydney Kingsford Smith-PDX Portland

23h 24m1 stop Los Angeles

$1,218Qantas Airways

Sat, Oct 24 - Sat, Oct 31

7:30 am - 6:55 amPDX Portland-SYD Sydney Kingsford Smith

29h 25m1 stop Dallas/Fort Worth

11:10 am - 4:26 pmSYD Sydney Kingsford Smith-PDX Portland

23h 16m2 stops Los Angeles Phoenix Sky Harbor Intl

$1,224American Airlines

Sat, Oct 24 - Sat, Oct 31

3:00 pm - 8:55 amPDX Portland-SYD Sydney Kingsford Smith

23h 55m2 stops Phoenix Sky Harbor Intl Los Angeles

11:10 am - 4:26 pmSYD Sydney Kingsford Smith-PDX Portland

23h 16m2 stops Los Angeles Phoenix Sky Harbor Intl

$1,224American Airlines

Sat, Oct 24 - Sat, Oct 31

10:48 am - 6:25 amPDX Portland-SYD Sydney Kingsford Smith

25h 37m1 stop Los Angeles

11:15 am - 4:34 pmSYD Sydney Kingsford Smith-PDX Portland

23h 19m1 stop Los Angeles

$1,256Alaska Airlines

Sat, Oct 24 - Sat, Oct 31

2:30 pm - 6:25 amPDX Portland-SYD Sydney Kingsford Smith

21h 55m1 stop Los Angeles

11:15 am - 6:55 pmSYD Sydney Kingsford Smith-PDX Portland

25h 40m2 stops Los Angeles Seattle/Tacoma Intl

$1,260Alaska Airlines

Sat, Oct 24 - Sat, Oct 31

12:18 pm - 6:25 amPDX Portland-SYD Sydney Kingsford Smith

24h 07m2 stops Seattle/Tacoma Intl Los Angeles

11:15 am - 4:50 pmSYD Sydney Kingsford Smith-PDX Portland

23h 35m2 stops Los Angeles Seattle/Tacoma Intl

$1,260Alaska Airlines

Sat, Oct 24 - Sat, Oct 31

5:03 pm - 9:15 pmPDX Portland-SYD Sydney Kingsford Smith

34h 12m2 stops Los Angeles Singapore Changi

7:10 pm - 5:34 pmSYD Sydney Kingsford Smith-PDX Portland

40h 24m3 stops Singapore Changi Tokyo Narita Los Angeles

$4,914Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

5:03 pm - 9:15 pmPDX Portland-SYD Sydney Kingsford Smith

34h 12m2 stops Los Angeles Singapore Changi

7:10 pm - 5:34 pmSYD Sydney Kingsford Smith-PDX Portland

40h 24m3 stops Singapore Changi Tokyo Narita Los Angeles

$5,511Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

2:25 pm - 6:55 amPDX Portland-SYD Sydney Kingsford Smith

46h 30m3 stops Dallas/Fort Worth London Heathrow Singapore Changi

4:20 pm - 6:48 pmSYD Sydney Kingsford Smith-PDX Portland

44h 28m3 stops Singapore Changi London Heathrow Dallas/Fort Worth

$10,619British Airways

Sat, Oct 24 - Sat, Oct 31

11:58 am - 6:55 amPDX Portland-SYD Sydney Kingsford Smith

48h 57m3 stops Dallas/Fort Worth London Heathrow Singapore Changi

4:20 pm - 8:32 pmSYD Sydney Kingsford Smith-PDX Portland

46h 12m3 stops Singapore Changi London Heathrow Dallas/Fort Worth

$10,620British Airways

Sat, Oct 24 - Sat, Oct 31

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Alaska Airlines flights from Portland to Sydney

Our best Alaska Airlines deals on Portland to Sydney flight tickets

Alaska Airlines

Nov 14

PDX2:48 pmPortland

20h 37m

1 stop

SYD6:25 amSydney Kingsford Smith

Nov 26

SYD11:15 amSydney Kingsford Smith

23h 33m

1 stop

PDX3:48 pmPortland

$1,201

Alaska Airlines

Nov 14

PDX2:48 pmPortland

20h 37m

1 stop

SYD6:25 amSydney Kingsford Smith

Nov 26

SYD11:15 amSydney Kingsford Smith

23h 33m

1 stop

PDX3:48 pmPortland

$1,202

Alaska Airlines

Oct 29

PDX5:18 pmPortland

19h 07m

1 stop

SYD6:25 amSydney Kingsford Smith

Nov 11

SYD9:25 pmSydney Kingsford Smith

18h 22m

1 stop

PDX8:47 pmPortland

$1,205

Air Canada flights from Portland to Sydney

Our best Air Canada deals on Portland to Sydney flight tickets

Air Canada

Nov 15

PDX7:10 pmPortland

19h 25m

1 stop

SYD9:35 amSydney Kingsford Smith

Nov 22

SYD11:20 amSydney Kingsford Smith

22h 21m

1 stop

PDX2:41 pmPortland

$1,182

Air Canada

Nov 2

PDX7:15 pmPortland

26h 25m

2 stops

SYD4:40 pmSydney Kingsford Smith

Nov 10

SYD11:20 amSydney Kingsford Smith

22h 21m

1 stop

PDX2:41 pmPortland

$1,203

Air Canada

Nov 2

PDX7:15 pmPortland

26h 25m

2 stops

SYD4:40 pmSydney Kingsford Smith

Nov 10

SYD9:00 amSydney Kingsford Smith

19h 26m

2 stops

PDX9:26 amPortland

$1,219

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Mon 11/2

7:15 pm-4:40 pm

2 stops26h 25m

Sydney Kingsford Smith

Wed 11/25

11:20 am-9:26 am

1 stop17h 06m

$998

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Mon 11/2

7:15 pm-4:40 pm

2 stops26h 25m

Sydney Kingsford Smith

Wed 11/25

9:00 am-9:26 am

2 stops19h 26m

$1,014

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Thu 11/12

3:15 pm-9:35 am

1 stop23h 20m

Sydney Kingsford Smith

Sun 11/22

6:20 am-9:26 am

2 stops22h 06m

$1,025

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Thu 4/1

7:10 pm-8:20 am

1 stop19h 10m

Sydney Kingsford Smith

Tue 4/6

6:00 am-9:25 am

2 stops20h 25m

$1,025

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Mon 11/2

7:00 am-7:00 am

1 stop29h 00m

Sydney Kingsford Smith

Wed 11/25

11:50 am-10:18 am

1 stop17h 28m

$1,123

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Mon 11/2

1:15 pm-9:05 am

2 stops24h 50m

Sydney Kingsford Smith

Wed 11/25

11:20 am-6:24 pm

3 stops26h 04m

$1,128

Quickest round-trip

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Fri 3/12

2:30 pm-6:25 am

1 stop20h 55m

Sydney Kingsford Smith

Fri 3/19

9:25 pm-8:48 pm

1 stop17h 23m

$1,159

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Tue 1/26

10:48 am-6:25 am

1 stop24h 37m

Sydney Kingsford Smith

Fri 2/5

9:25 pm-8:50 pm

1 stop18h 25m

$1,160

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Thu 10/29

5:18 pm-9:00 am

1 stop21h 42m

Sydney Kingsford Smith

Wed 11/11

11:10 am-1:50 pm

1 stop21h 40m

$1,168

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Fri 3/12

5:40 pm-10:20 am

2 stops21h 40m

Sydney Kingsford Smith

Fri 3/19

9:25 pm-8:48 pm

1 stop17h 23m

$1,233

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $1,076 to $1,237.
The lowest price recently found on this route was $1,107.

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 $1,070. If you are unable to visit Sydney during the month of September, then departing from Portland during the month June is also very affordable. Most momondo users find prices during this month for around $1,086.

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 $1,255 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 $1,127 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 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

Best Price Found	$528
Fastest flight time	23h 05m
Direct flights	None

The best one-way flight to Sydney from Portland in the past 72 hours is $528. The best round-trip flight deal from Portland to Sydney found on momondo in the last 72 hours is $998.

The fastest flight from Portland to Sydney takes 23h 05m

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?
A flight from Portland to Sydney Kingsford Smith will travel around 7663.9 mi. A reasonable flight in good conditions will take 23h 05m.
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 October 2026, there are 5 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 (56% of total bookings). The next most popular airlines are Qantas Airways (15%), United Airlines (11%), 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
Alaska Airlines	PriceFrom $222	Free Cancellation	Rating 7.9 13,091 reviews	Search Alaska Airlines flights
Delta	PriceFrom $901	Free Cancellation	Rating 7.8 8,649 reviews	Search Delta flights
Air Canada	PriceFrom $960	Free Cancellation	Rating 7.1 11,784 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,076	Free Cancellation	Rating 7.5 1,114 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $1,159	Free Cancellation	Rating 7.3 10,390 reviews	Search United Airlines flights

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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.

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Cheap flights from Portland to Sydney from $528

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 12/10. 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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Alaska Airlines flights from Portland to Sydney

Our best Alaska Airlines deals on Portland to Sydney flight tickets

Air Canada flights from Portland to Sydney

Our best Air Canada deals on Portland to Sydney flight tickets

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How to get the cheapest flight ticket from Portland to Sydney

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

What is the cheapest month to fly to Sydney?

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

How have Portland to Sydney flight prices changed over time?

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

What airlines fly to Sydney?

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

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

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

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

When to book flights from Portland to Sydney

Cheap Portland to Sydney (PDX to SYD) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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?

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

Fly your favorite airline to Sydney

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Sydney

List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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