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Cheap flights from Portland to Sydney from $673

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 1/3. 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

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Find the cheapest flights from Portland to Sydney

Cheap return flights

These are some of the best return flight deals from Portland to Sydney that have been recently found on momondo from popular airlines, departing in the coming months.
15:25 - 07:20PDX-SYD
22h 55m1 stop
09:20 - 14:50SYD-PDX
22h 30m1 stop
$1,316Air Canada
Find Deal
Sun, 17 Aug - Mon, 25 Aug
19:40 - 07:20PDX-SYD
18h 40m1 stop
09:20 - 09:35SYD-PDX
17h 15m1 stop
$1,318Air Canada
Find Deal
Fri, 1 Aug - Sat, 30 Aug
15:25 - 07:20PDX-SYD
22h 55m1 stop
06:00 - 09:35SYD-PDX
20h 35m2 stops
$1,377
Find Deal
Fri, 1 Aug - Thu, 14 Aug
12:09 - 07:05PDX-SYD
25h 56m1 stop
09:10 - 23:56SYD-PDX
31h 46m1 stop
$1,401American Airlines
Find Deal
Fri, 9 May - Thu, 22 May
15:43 - 09:00PDX-SYD
22h 17m1 stop
11:15 - 15:15SYD-PDX
22h 00m1 stop
$1,414American Airlines
Find Deal
Tue, 4 Mar - Wed, 19 Mar
15:56 - 06:55PDX-SYD
21h 59m1 stop
10:20 - 18:35SYD-PDX
25h 15m1 stop
$1,425United Airlines
Find Deal
Tue, 6 May - Thu, 22 May
19:42 - 09:15PDX-SYD
18h 33m1 stop
12:10 - 12:37SYD-PDX
18h 27m1 stop
$1,437United Airlines
Find Deal
Tue, 4 Mar - Mon, 10 Mar
10:08 - 07:45PDX-SYD
27h 37m1 stop
10:05 - 18:45SYD-PDX
26h 40m1 stop
$1,451Delta
Find Deal
Thu, 20 Mar - Fri, 28 Mar
13:00 - 06:35PDX-SYD
24h 35m1 stop
09:25 - 11:42SYD-PDX
19h 17m1 stop
$1,453Delta
Find Deal
Sun, 25 May - Wed, 11 Jun
10:32 - 15:35PDX-SYD
34h 03m2 stops
17:25 - 20:25SYD-PDX
21h 00m1 stop
$1,805
Find Deal
Thu, 6 Mar - Mon, 10 Mar

Air Canada flights from Portland to Sydney

Our best Air Canada deals on Portland to Sydney flight tickets
Air Canada
17 Aug
PDX15:25Portland
22h 55m
1 stop
SYD07:20Sydney Kingsford Smith
25 Aug
SYD09:20Sydney Kingsford Smith
22h 30m
1 stop
PDX14:50Portland
Air Canada
1 Aug
PDX19:40Portland
18h 40m
1 stop
SYD07:20Sydney Kingsford Smith
30 Aug
SYD09:20Sydney Kingsford Smith
17h 15m
1 stop
PDX09:35Portland
Air Canada
5 May
PDX15:25Portland
22h 55m
1 stop
SYD07:20Sydney Kingsford Smith
3 June
SYD07:00Sydney Kingsford Smith
19h 30m
2 stops
PDX09:30Portland

American Airlines flights from Portland to Sydney

Our best American Airlines deals on Portland to Sydney flight tickets
American Airlines
9 May
PDX12:09Portland
25h 56m
1 stop
SYD07:05Sydney Kingsford Smith
22 May
SYD09:10Sydney Kingsford Smith
31h 46m
1 stop
PDX23:56Portland
American Airlines
4 Mar
PDX15:43Portland
22h 17m
1 stop
SYD09:00Sydney Kingsford Smith
19 Mar
SYD11:15Sydney Kingsford Smith
22h 00m
1 stop
PDX15:15Portland
American Airlines
15 Apr
PDX06:00Portland
32h 05m
1 stop
SYD07:05Sydney Kingsford Smith
29 Apr
SYD09:10Sydney Kingsford Smith
30h 11m
1 stop
PDX22:21Portland

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?

The month of February is, on average, the cheapest month to fly to Sydney from Portland, with most prices found around $1,634. If you aren’t able to travel to Sydney during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $1,695.

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

Our data shows that Monday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $0. The most expensive day to fly to Sydney is Sunday, with ticket prices averaging around $2,066.

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 at midday. momondo users have found flights departing from Portland to Sydney at midday for as low as $0. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,852 on average. Flights to Sydney from Portland in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 14 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,846 when searching 14 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 $1,469 on momondo.

How have Portland to Sydney flight prices changed over time?

As of February 2025, prices for Portland to Sydney flights are approximately 34% 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 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

Best price found

$673

Fastest flight time

17h 45m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Portland in the past 72 hours is $673. The best return flight deal from Portland to Sydney found on momondo in the last 72 hours is $1,316.
The fastest flight from Portland to Sydney takes 17h 45m
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?

    There are 12333.8 km between Portland and Sydney Kingsford Smith. By plane, this route typically takes 17h 45m.

  • 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 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?


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 AirlinesPriceFrom $1,180Free cancellationRating
7.4
8,754 reviews
Search United Airlines flights

Travelling to a place near Sydney?

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


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