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

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

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 36% 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.

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 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.

$380 Cheap Flights from Portland to Sydney in 2025

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 $1,129 to $1,276. The lowest price recently found on this route was $788.

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Find the cheapest flights from Portland to Sydney

Round-trip

One-way

Last minute

Cheap round-trip flights

3:25 pm - 7:20 amPDX-SYD

22h 55m1 stop

9:20 am - 6:46 pmSYD-PDX

26h 26m1 stop

$788Air Canada

Find Deal

mar., ago. 12 - mar., ago. 19

7:40 pm - 7:20 amPDX-SYD

18h 40m1 stop

9:20 am - 2:46 pmSYD-PDX

22h 26m1 stop

$791Air Canada

Find Deal

sáb., ago. 30 - vie., sep. 26

2:56 pm - 7:05 amPDX-SYD

23h 09m1 stop

9:10 am - 1:24 pmSYD-PDX

21h 14m1 stop

$800Qantas Airways

Find Deal

mar., sep. 2 - mar., sep. 23

2:56 pm - 7:05 amPDX-SYD

23h 09m1 stop

5:45 pm - 7:10 pmSYD-PDX

18h 25m1 stop

$802Qantas Airways

Find Deal

mar., sep. 2 - mar., sep. 23

3:25 pm - 7:20 amPDX-SYD

22h 55m1 stop

7:30 am - 2:46 pmSYD-PDX

24h 16m2 stops

$803Air Canada

Find Deal

mar., sep. 23 - mar., sep. 30

9:55 am - 6:35 amPDX-SYD

27h 40m2 stops

9:25 am - 11:45 amSYD-PDX

19h 20m1 stop

$825Delta

Find Deal

lun., sep. 1 - lun., sep. 29

1:01 pm - 6:55 amPDX-SYD

24h 54m2 stops

9:30 am - 9:01 pmSYD-PDX

28h 31m2 stops

$882United Airlines

Find Deal

jue., sep. 4 - dom., sep. 7

2:56 pm - 7:05 amPDX-SYD

23h 09m1 stop

9:10 am - 2:21 pmSYD-PDX

22h 11m1 stop

$952American Airlines

Find Deal

sáb., ago. 9 - sáb., ago. 23

7:40 am - 7:25 amPDX-SYD

29h 45m1 stop

5:45 pm - 10:01 pmSYD-PDX

23h 16m1 stop

$961American Airlines

Find Deal

sáb., nov. 1 - sáb., nov. 15

8:50 am - 7:00 amPDX-SYD

29h 10m2 stops

10:20 am - 2:42 pmSYD-PDX

21h 22m1 stop

$964United Airlines

Find Deal

jue., jul. 31 - jue., ago. 28

Air Canada flights from Portland to Sydney

Our best Air Canada deals on Portland to Sydney flight tickets

Air Canada

Aug 12

PDX3:25 pmPortland

22h 55m

1 stop

SYD7:20 amSydney Kingsford Smith

Aug 19

SYD9:20 amSydney Kingsford Smith

26h 26m

1 stop

PDX6:46 pmPortland

$788

Find similar

Air Canada

Aug 30

PDX7:40 pmPortland

18h 40m

1 stop

SYD7:20 amSydney Kingsford Smith

Sep 26

SYD9:20 amSydney Kingsford Smith

22h 26m

1 stop

PDX2:46 pmPortland

$791

Find similar

Air Canada

Sep 23

PDX3:25 pmPortland

22h 55m

1 stop

SYD7:20 amSydney Kingsford Smith

Sep 30

SYD7:30 amSydney Kingsford Smith

24h 16m

2 stops

PDX2:46 pmPortland

$803

Find similar

Qantas Airways flights from Portland to Sydney

Our best Qantas Airways deals on Portland to Sydney flight tickets

Qantas Airways

Sep 2

PDX2:56 pmPortland

23h 09m

1 stop

SYD7:05 amSydney Kingsford Smith

Sep 23

SYD9:10 amSydney Kingsford Smith

21h 14m

1 stop

PDX1:24 pmPortland

$800

Find similar

Qantas Airways

Sep 2

PDX2:56 pmPortland

23h 09m

1 stop

SYD7:05 amSydney Kingsford Smith

Sep 23

SYD5:45 pmSydney Kingsford Smith

18h 25m

1 stop

PDX7:10 pmPortland

$802

Find similar

Qantas Airways

Sep 1

PDX2:56 pmPortland

23h 09m

1 stop

SYD7:05 amSydney Kingsford Smith

Sep 27

SYD9:10 amSydney Kingsford Smith

24h 20m

1 stop

PDX4:30 pmPortland

$839

Find similar

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?

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 $1,031. If you are unable to visit Sydney during the month of September, then departing from Portland during the month May is also very affordable. Most momondo users find prices during this month for around $1,039.

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 $1,161 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 $921 on momondo.

How have Portland to Sydney flight prices changed over time?

As of July 2025, prices for Portland to Sydney flights are approximately 35% 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

Best Price Found	$380
Fastest flight time	18h 20m
Direct flights	None
Airports in Sydney	1 airport

The best one-way flight to Sydney from Portland in the past 72 hours is $380. The best round-trip flight deal from Portland to Sydney found on momondo in the last 72 hours is $788.

The fastest flight from Portland to Sydney takes 18h 20m

There are no direct flights from Portland to Sydney. Popular non-direct route for this connection is Portland Airport - Sydney Kingsford Smith Airport.

There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

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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 18h 20m.
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 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 (30% of total bookings). The next most popular airlines are United Airlines (28%), Delta (16%), and Qantas Airways (10%).

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
Hawaiian Airlines	PriceFrom $550	Free Cancellation	Rating 7.8 2,571 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $848	Free Cancellation	Rating 7.1 9,717 reviews	Search Air Canada flights
United Airlines	PriceFrom $912	Free Cancellation	Rating 7.4 8,856 reviews	Search United Airlines flights
Delta	PriceFrom $922	Free Cancellation	Rating 8.0 7,953 reviews	Search Delta flights
Qantas Airways	PriceFrom $929	Free Cancellation	Rating 7.5 877 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $1,055	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $1,099	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska 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.

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 $380

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 9/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from Portland to Sydney

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

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

See travel insights to Sydney from

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?

How have Portland to Sydney flight prices changed over time?

As of July 2025, prices for Portland to Sydney flights are approximately 35% 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 United Airlines are the most popular carriers operating from Portland to Sydney Kingsford Smith

What airlines fly to Sydney?

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

Best Price Found

Fastest flight time

Direct flights

Airports in Sydney

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