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.
1 adult
0 bags

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Cheap round-trip flights

Air Canada Logo
3:25 pm - 7:20 amPDX-SYD
22h 55m1 stop
Air Canada Logo
9:20 am - 6:46 pmSYD-PDX
26h 26m1 stop
$788Air Canada
Find Deal
mar., ago. 12 - mar., ago. 19
Air Canada Logo
7:40 pm - 7:20 amPDX-SYD
18h 40m1 stop
Air Canada Logo
9:20 am - 2:46 pmSYD-PDX
22h 26m1 stop
$791Air Canada
Find Deal
sáb., ago. 30 - vie., sep. 26
Qantas Airways Logo
2:56 pm - 7:05 amPDX-SYD
23h 09m1 stop
Qantas Airways Logo
9:10 am - 1:24 pmSYD-PDX
21h 14m1 stop
$800Qantas Airways
Find Deal
mar., sep. 2 - mar., sep. 23
Qantas Airways Logo
2:56 pm - 7:05 amPDX-SYD
23h 09m1 stop
Qantas Airways Logo
5:45 pm - 7:10 pmSYD-PDX
18h 25m1 stop
$802Qantas Airways
Find Deal
mar., sep. 2 - mar., sep. 23
Air Canada Logo
3:25 pm - 7:20 amPDX-SYD
22h 55m1 stop
Air Canada Logo
7:30 am - 2:46 pmSYD-PDX
24h 16m2 stops
$803Air Canada
Find Deal
mar., sep. 23 - mar., sep. 30
Delta Logo
9:55 am - 6:35 amPDX-SYD
27h 40m2 stops
Delta Logo
9:25 am - 11:45 amSYD-PDX
19h 20m1 stop
$825Delta
Find Deal
lun., sep. 1 - lun., sep. 29
United Airlines Logo
1:01 pm - 6:55 amPDX-SYD
24h 54m2 stops
United Airlines Logo
9:30 am - 9:01 pmSYD-PDX
28h 31m2 stops
$882United Airlines
Find Deal
jue., sep. 4 - dom., sep. 7
American Airlines Logo
2:56 pm - 7:05 amPDX-SYD
23h 09m1 stop
American Airlines Logo
9:10 am - 2:21 pmSYD-PDX
22h 11m1 stop
$952American Airlines
Find Deal
sáb., ago. 9 - sáb., ago. 23
American Airlines Logo
7:40 am - 7:25 amPDX-SYD
29h 45m1 stop
American Airlines Logo
5:45 pm - 10:01 pmSYD-PDX
23h 16m1 stop
$961American Airlines
Find Deal
sáb., nov. 1 - sáb., nov. 15
United Airlines Logo
8:50 am - 7:00 amPDX-SYD
29h 10m2 stops
United Airlines Logo
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
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
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

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
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
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

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?

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)

  • 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?

  • 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?


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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Katoomba
Bondi Beach
Wollongong
Randwick
Cronulla
Manly
Coogee
Penrith
Charlestown
Lithgow
Swansea
Leura
Terrigal

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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1 adult
sáb. 7/19
sáb. 7/26

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