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Cheap flights from Sydney to Portland from $434

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Portland departing on 10/15. 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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Cheap round-trip flights

Alaska Airlines Logo
9:40 pm - 10:40 pmSYD-PDX
18h 00m1 stop
Alaska Airlines Logo
7:40 am - 7:45 pmPDX-SYD
19h 05m1 stop
$766Alaska Airlines
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Thu, Aug 28 - Thu, Sep 11
American Airlines Logo
10:10 am - 2:04 pmSYD-PDX
21h 54m1 stop
American Airlines Logo
2:45 pm - 8:05 amPDX-SYD
23h 20m1 stop
$828American Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 21
Delta Logo
9:25 am - 11:52 pmSYD-PDX
31h 27m2 stops
Delta Logo
5:10 pm - 6:35 amPDX-SYD
20h 25m2 stops
$834Delta
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Thu, Aug 28 - Thu, Sep 11
United Airlines Logo
11:20 am - 10:56 pmSYD-PDX
30h 36m2 stops
United Airlines Logo
9:00 am - 9:05 amPDX-SYD
29h 05m2 stops
$849United Airlines
Find Deal
Mon, Dec 1 - Wed, Dec 31
American Airlines Logo
10:10 am - 8:30 pmSYD-PDX
28h 20m1 stop
American Airlines Logo
2:45 pm - 8:05 amPDX-SYD
23h 20m1 stop
$893American Airlines
Find Deal
Mon, Oct 6 - Tue, Oct 14
Delta Logo
10:40 am - 7:28 pmSYD-PDX
27h 48m1 stop
Delta Logo
11:55 am - 8:30 amPDX-SYD
25h 35m1 stop
$1,004Delta
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Mon, Dec 1 - Wed, Dec 31
Virgin Australia Logo
10:20 am - 12:38 amSYD-PDX
31h 18m1 stop
Virgin Australia Logo
5:30 am - 6:55 amPDX-SYD
32h 25m1 stop
$1,037Virgin Australia
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Fri, Sep 19 - Sat, Oct 4
Logo
1:15 pm - 7:10 pmSYD-PDX
22h 55m2 stops
Logo
5:55 pm - 12:45 pmPDX-SYD
24h 50m2 stops
$1,039
Find Deal
Wed, Oct 1 - Wed, Oct 8
Delta Logo
10:25 am - 11:43 pmSYD-PDX
31h 18m2 stops
Delta Logo
12:25 pm - 7:35 amPDX-SYD
25h 10m1 stop
$1,043Delta
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Mon, Oct 6 - Tue, Oct 14
United Airlines Logo
10:20 am - 7:13 pmSYD-PDX
25h 53m2 stops
United Airlines Logo
3:50 pm - 7:55 amPDX-SYD
22h 05m1 stop
$1,141United Airlines
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Wed, Oct 1 - Wed, Oct 8

Delta flights from Sydney to Portland

Our best Delta deals on Sydney to Portland flight tickets
Delta
Aug 28
SYD9:25 amSydney Kingsford Smith
31h 27m
2 stops
PDX11:52 pmPortland
Sep 11
PDX5:10 pmPortland
20h 25m
2 stops
SYD6:35 amSydney Kingsford Smith
$834
Find similar
Delta
Dec 1
SYD10:40 amSydney Kingsford Smith
27h 48m
1 stop
PDX7:28 pmPortland
Dec 31
PDX11:55 amPortland
25h 35m
1 stop
SYD8:30 amSydney Kingsford Smith
$1,004
Find similar
Delta
Oct 6
SYD10:25 amSydney Kingsford Smith
31h 18m
2 stops
PDX11:43 pmPortland
Oct 14
PDX12:25 pmPortland
25h 10m
1 stop
SYD7:35 amSydney Kingsford Smith
$1,043
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United Airlines flights from Sydney to Portland

Our best United Airlines deals on Sydney to Portland flight tickets
United Airlines
Dec 1
SYD11:20 amSydney Kingsford Smith
30h 36m
2 stops
PDX10:56 pmPortland
Dec 31
PDX9:00 amPortland
29h 05m
2 stops
SYD9:05 amSydney Kingsford Smith
$849
Find similar
United Airlines
Aug 22
SYD9:30 amSydney Kingsford Smith
24h 51m
2 stops
PDX5:21 pmPortland
Aug 23
PDX5:00 amPortland
33h 00m
2 stops
SYD7:00 amSydney Kingsford Smith
$938
Find similar
United Airlines
Oct 1
SYD10:20 amSydney Kingsford Smith
25h 53m
2 stops
PDX7:13 pmPortland
Oct 8
PDX3:50 pmPortland
22h 05m
1 stop
SYD7:55 amSydney Kingsford Smith
$1,141
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momondo Fare Finder

 
Customize your flight search to find flights from Sydney to Portland 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Sydney to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Thu 8/28

9:40 pm-10:40 pm

1 stop18h 00m

Portland

Thu 9/11

7:40 am-7:45 pm

1 stop19h 05m

$766

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Tue 10/7

10:10 am-2:04 pm

1 stop21h 54m

Portland

Tue 10/21

2:45 pm-8:05 am

1 stop23h 20m

$828

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Thu 8/28

9:25 am-11:52 pm

2 stops31h 27m

Portland

Thu 9/11

5:10 pm-6:35 am

2 stops20h 25m

$834

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Mon 12/1

11:20 am-10:56 pm

2 stops30h 36m

Portland

Wed 12/31

9:00 am-9:05 am

2 stops29h 05m

$849

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Mon 10/6

10:10 am-8:30 pm

1 stop28h 20m

Portland

Tue 10/14

2:45 pm-8:05 am

1 stop23h 20m

$893

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Mon 12/1

10:40 am-7:28 pm

1 stop27h 48m

Portland

Wed 12/31

11:55 am-8:30 am

1 stop25h 35m

$1,004

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Fri 9/19

10:20 am-12:38 am

1 stop31h 18m

Portland

Sat 10/4

5:30 am-6:55 am

1 stop32h 25m

$1,037

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Wed 10/1

1:15 pm-7:10 pm

2 stops22h 55m

Portland

Wed 10/8

5:55 pm-12:45 pm

2 stops24h 50m

$1,039

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Mon 10/6

10:25 am-11:43 pm

2 stops31h 18m

Portland

Tue 10/14

12:25 pm-7:35 am

1 stop25h 10m

$1,043

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Wed 10/1

10:20 am-7:13 pm

2 stops25h 53m

Portland

Wed 10/8

3:50 pm-7:55 am

1 stop22h 05m

$1,141

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

How to get the cheapest flight ticket from Sydney to Portland

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 Sydney and Portland?

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from Sydney is in August. Flight prices, which tend to average around $930, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in August, then you should wait until September to fly from Sydney, when ticket prices are also cheap, with an average price of $1,010.

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

The cheapest day to depart on your flight to Portland is on a Thursday when prices can be found for as low as $1,044. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Tuesday, with ticket prices averaging around $1,517.

What is the cheapest time of day to depart on your flight to Portland?

The cheapest time of day to fly to Portland is in the morning when flights can be purchased for as low as $1,143. In the afternoon is when there is more demand to fly to Portland, so prices are often more expensive at around $1,304 per ticket.

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

You are more likely to see cheaper flights to Portland from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $1,157 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from Sydney for as low as $1,000 on momondo.

How have Sydney to Portland flight prices changed over time?

As of August 2025, prices for Sydney to Portland flights are approximately 40% cheaper when compared to flights at the same time last year.

When to book flights from Sydney to Portland

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to Portland according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Find info about flight duration, direct flights, and airports for your flight from Sydney to Portland

Best Price Found

$434

Fastest flight time

18h 00m

Direct flights

None

Airports in Portland

1 airport
The best one-way flight to Portland from Sydney in the past 72 hours is $434. The best round-trip flight deal from Sydney to Portland found on momondo in the last 72 hours is $766.
The fastest flight from Sydney to Portland takes 18h 00m
There are no direct flights from Sydney to Portland. Popular non-direct route for this connection is Sydney Kingsford Smith Airport - Portland Airport.
There is 1 airport near Portland: Portland (PDX)
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  • How far is Sydney Kingsford Smith to Portland by plane?

    Portland is 7663.9 mi away from Sydney Kingsford Smith. A reasonable flight in good conditions will take 18h 00m.

  • When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Portland Airport?

    Prices for flights from Sydney Kingsford Smith Airport to Portland Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Sydney Kingsford Smith Airport to Portland 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 Sydney Kingsford Smith Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The necessary travel and health documents for your Portland Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Lincoln City
Seaside
Cannon Beach
Vancouver
Salem
Astoria
Long Beach
Depoe Bay
Beaverton
Rockaway Beach
Hood River
Hillsboro
Gresham
McMinnville
Tigard
Longview
The Dalles
Pacific City
Manzanita
Tillamook

Why use momondo?

Why should I use momondo to find a flight deal from Sydney to Portland?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portland from Sydney.

Can I find flights from Sydney to Portland with flexible booking policies on momondo?

All flight searches from Sydney to Portland on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Sydney to Portland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sydney to Portland.

I’m not ready to book a flight from Sydney to Portland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portland, momondo offers a useful price alert feature which will track prices for flights to Portland from Sydney and alert you when they change.

An easier way to manage your Portland trip

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