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Cheap flights from Oregon to Sydney from $816

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
24 Aug — 31 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Oregon to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Oregon to Sydney
Explore the most affordable flight options available from Oregon to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 July 2026.

Sun 9/815:30
PDX
-
SYD
1 stop22h 50m
Air Canada
Sun 23/809:20
SYD
-
PDX
1 stop17h 11m
Air Canada
Deal found 25/7$1,461
Wed 28/1019:10
PDX
-
SYD
1 stop19h 25m
Air Canada
Mon 2/1111:20
SYD
-
PDX
1 stop22h 21m
Air Canada
Deal found 22/7$1,499
Mon 31/815:30
PDX
-
SYD
1 stop22h 50m
Air Canada
Sun 13/909:20
SYD
-
PDX
1 stop17h 11m
Air Canada
Deal found 22/7$1,502
Wed 30/906:25
BOI
-
SYD
2 stops32h 55m
Air Canada
Mon 5/1010:20
SYD
-
BOI
2 stops40h 14m
Air Canada
Deal found 22/7$1,504
Fri 11/917:30
PDX
-
SYD
1 stop21h 00m
Multiple Airlines
Thu 17/913:15
SYD
-
PDX
2 stops42h 12m
Multiple Airlines
Deal found 21/7$1,505
Tue 3/1112:18
EUG
-
SYD
1 stop23h 07m
Multiple Airlines
Tue 17/1114:00
SYD
-
EUG
2 stops25h 52m
Multiple Airlines
Deal found 21/7$1,511
Wed 19/813:53
PDX
-
SYD
1 stop24h 12m
Qantas Airways
Tue 25/817:50
SYD
-
PDX
1 stop23h 09m
Qantas Airways
Deal found 20/7$1,525
Wed 28/1017:03
PDX
-
SYD
1 stop21h 57m
Multiple Airlines
Mon 2/1111:15
SYD
-
PDX
1 stop21h 35m
Multiple Airlines
Deal found 21/7$1,526
Mon 12/1008:00
BOI
-
SYD
2 stops31h 05m
Multiple Airlines
Mon 26/1011:20
SYD
-
BOI
1 stop28h 37m
Multiple Airlines
Deal found 23/7$1,528
Mon 3/817:08
PDX
-
SYD
1 stop20h 57m
Qantas Airways
Mon 17/817:50
SYD
-
PDX
1 stop23h 06m
Qantas Airways
Deal found 23/7$1,528
Wed 30/908:05
BOI
-
SYD
2 stops31h 25m
Multiple Airlines
Mon 5/1010:10
SYD
-
BOI
1 stop19h 18m
Multiple Airlines
Deal found 23/7$1,529
Sun 9/815:30
PDX
-
SYD
1 stop22h 50m
Multiple Airlines
Sun 23/806:00
SYD
-
PDX
2 stops20h 31m
Multiple Airlines
Deal found 25/7$1,529

Find flight deals from Oregon to Sydney

Keep the following information in mind while searching for Oregon to Sydney flight deals. Data was last updated 25 July 2026.

Round-trip from

$1,461

One-way from

$816

Popular in

December

Cheapest in

September

Average price

$1,862
Air Canada
  • Air Canada
  • 9/8-23/8
  • 2 total stops
  • 40h 01m total
  • Oregon to Sydney
Search Deals
18/11
  • 18/11
  • 1 total stop
  • 17h 45m total
  • Oregon to Sydney
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($345 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($109 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Oregon to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 25 July 2026.
Use the filters below to find and compare flights from Oregon to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 9/8

06:30-07:20

2 stops32h 50m

Sydney Kingsford Smith

Wed 12/8

09:20-11:06

2 stops41h 46m

$1,535

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 14/10

18:50-07:55

1 stop20h 05m

Sydney Kingsford Smith

Wed 28/10

11:50-21:15

1 stop26h 25m

$1,568

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 10/10

15:36-07:50

2 stops47h 14m

Sydney Kingsford Smith

Wed 28/10

09:40-14:56

1 stop22h 16m

$1,594

MedfordSydney

MFR - SYD

MFRSYD

Medford

Thu 12/11

16:16-06:25

1 stop19h 09m

Sydney Kingsford Smith

Wed 10/2

21:25-00:33

2 stops22h 08m

$1,602

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 23/8

17:35-18:50

1 stop32h 15m

Sydney Kingsford Smith

Sun 30/8

20:45-06:14

1 stop26h 29m

$1,604

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 1/11

14:39-09:20

2 stops24h 41m

Sydney Kingsford Smith

Sat 21/11

11:50-11:14

1 stop17h 24m

$1,640

MedfordSydney

MFR - SYD

MFRSYD

Medford

Thu 12/11

13:28-09:00

2 stops24h 32m

Sydney Kingsford Smith

Wed 10/2

11:20-17:28

2 stops25h 08m

$1,641

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 15/10

08:22-07:50

2 stops30h 28m

Sydney Kingsford Smith

Sun 25/10

10:15-17:14

2 stops23h 59m

$1,647

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 14/8

23:02-06:55

2 stops38h 53m

Sydney Kingsford Smith

Wed 2/9

10:20-12:00

1 stop18h 40m

$1,647

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 30/9

13:52-07:05

2 stops25h 13m

Sydney Kingsford Smith

Mon 5/10

13:00-22:29

1 stop26h 29m

$1,677

Flights are sorted by cheapest return flights first.

Deals found on 24/7

Showing 1-10 of 49 resultsSorted by cheapest first
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Best time to book a flight from Oregon to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Oregon with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Oregon to Sydney

What is the cheapest month to book a flight from Oregon to Sydney?

Currently, September is the cheapest month in which you can book a flight from Oregon to Sydney (average of $1,531). Flying from Oregon to Sydney in December is currently the most expensive (average of $2,559). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Oregon to Sydney?

Airfare is below average for this route at the moment.
Oregon to Sydney flights typically cost between $1,658 and $1,891 in August.
The cheapest return price found within the last 5 days was $1,461 on Air Canada (9 Aug–23 Aug).

How far ahead should I book a flight from Oregon to Sydney?

The price you pay for your flight from Oregon to Sydney may vary depending on when you book. For the best chance of a lower fare, look to book 38 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

Find useful and relevant information for your journey from Oregon to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Oregon?

    For a flight from Oregon to Sydney, you will be flying into Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre of the city.

  • How long is the flight from Oregon to Sydney?

    For as low as $1,568, Air Canada can have you in Sydney from Oregon in 20h 05m. There are 12704 km between Oregon and Sydney. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Oregon to Sydney?

    While some choose either Boise Air Term. Gowen Fld - Sydney Kingsford Smith or Medford - Sydney Kingsford Smith, Portland - Sydney Kingsford Smith is the most popular route from Oregon to Sydney.

  • Can I find deals for flights from Oregon to Sydney that include hotel bookings?

    Yes. In addition to deals on Oregon to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Oregon to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to Sydney.

  • Can I find deals for business class flights from Oregon to Sydney?

    Yes. Cheapflights offers flight deals from Oregon to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Oregon to Sydney?

    Currently, September is the cheapest month in which you can book a flight from Oregon to Sydney (average of $1,531). Flying from Oregon to Sydney in December is currently the most expensive (average of $2,559). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Oregon to Sydney

Discover the top airline that operate flights from Oregon to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 25 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$2,411Average$2,635FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Oregon to Sydney?

Cheapflights makes it easy to find Oregon to Sydney flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Oregon to Sydney?

Millions of users choose and trust Cheapflights to book the best flight deals from Oregon to Sydney for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Oregon to Sydney with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Oregon to Sydney flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Oregon to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Oregon to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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