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$1,474+ Cheap flights from Portland, ME (PWM) to Australia

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SYD
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheap flight deals from Portland to Australia

Cheapest flights from Portland to Australia
Explore the most affordable flight options available from Portland to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:04 am
PWM
-
SYD
2 stops34h 51m
United Airlines
Sun 4/269:30 am
SYD
-
PWM
2 stops26h 10m
United Airlines
Deal found 2/9$1,474
This United Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:00 am
PWM
-
SYD
2 stops35h 00m
United Airlines
Tue 8/189:30 am
SYD
-
PWM
2 stops25h 57m
United Airlines
Deal found 2/11$1,525
This United Airlines deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:17 pm
PWM
-
SYD
1 stop22h 43m
United Airlines
Sun 9/279:30 am
SYD
-
PWM
2 stops28h 00m
United Airlines
Deal found 2/7$1,574
This Qantas Airways deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/281:35 pm
PWM
-
SYD
2 stops27h 20m
Multiple Airlines
Tue 8/186:25 am
SYD
-
PWM
3 stops30h 20m
Multiple Airlines
Deal found 2/11$1,881
This SmartFares deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:09 am
PWM
-
SYD
3 stops46h 01m
Turkish Airlines
Sun 9/279:05 pm
SYD
-
PWM
3 stops39h 02m
Turkish Airlines
Deal found 2/7$1,882
This Cathay Pacific deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:17 am
PWM
-
SYD
3 stops42h 43m
Multiple Airlines
Sun 4/269:55 pm
SYD
-
PWM
2 stops39h 32m
Multiple Airlines
Deal found 2/8$2,054
This Cathay Pacific deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:07 am
PWM
-
SYD
2 stops47h 03m
Multiple Airlines
Wed 4/293:15 pm
SYD
-
PWM
3 stops46h 12m
Multiple Airlines
Deal found 2/11$2,064
This Qantas Airways deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:02 pm
PWM
-
SYD
3 stops28h 28m
Multiple Airlines
Sun 9/279:10 am
SYD
-
PWM
2 stops24h 11m
Multiple Airlines
Deal found 2/7$2,082

Find flight deals from Portland to Australia

Keep the following information in mind while searching for Portland to Australia flight deals. Data was last updated February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,474
(United Airlines)
Provider with most accurate pricing for Portland-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Sydney Kingsford Smith flights.
Search Deals
From Portland to Australia
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Australia 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 2,558,603 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from Portland to Australia that are best for you.

Fly from

Portland

Fly to

Australia

Route

Depart

Return

Price

PortlandSydney

PWM - SYD

PWMSYD

Portland

Tue 3/31

11:09 am-7:55 am

2 stops29h 46m

Sydney Kingsford Smith

Sun 4/26

9:30 am-9:40 pm

2 stops26h 10m

$1,474

PortlandSydney

PWM - SYD

PWMSYD

Portland

Wed 4/15

11:09 am-6:55 am

2 stops29h 46m

Sydney Kingsford Smith

Wed 4/29

10:20 am-9:40 pm

2 stops25h 20m

$1,475

PortlandSydney

PWM - SYD

PWMSYD

Portland

Thu 5/28

6:00 am-7:00 am

2 stops35h 00m

Sydney Kingsford Smith

Tue 8/18

9:30 am-9:27 pm

2 stops25h 57m

$1,525

PortlandSydney

PWM - SYD

PWMSYD

Portland

Thu 5/28

1:35 pm-6:55 am

2 stops27h 20m

Sydney Kingsford Smith

Tue 8/18

6:25 am-10:45 pm

3 stops30h 20m

$1,881

PortlandSydney

PWM - SYD

PWMSYD

Portland

Tue 3/31

6:17 am-4:00 pm

3 stops42h 43m

Sydney Kingsford Smith

Sun 4/26

9:55 pm-11:27 pm

2 stops39h 32m

$2,054

PortlandSydney

PWM - SYD

PWMSYD

Portland

Wed 4/15

7:07 am-8:10 pm

2 stops47h 03m

Sydney Kingsford Smith

Wed 4/29

3:15 pm-11:27 pm

3 stops46h 12m

$2,064

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Best time to book a flight from Portland to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Portland with our price prediction graph.
Estimated round-trip 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 Portland to Australia

What is the cheapest month to book a flight from Portland, Maine to Australia?

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Australia (average of $251). Flying from Portland, Maine to Australia in January is currently the most expensive (average of $978). 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.

Related info for your journey

Find useful and relevant information for your journey from Portland to Australia. 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 from for flights from Portland to Australia?

    Most people fly from Portland (PWM) if they book a flight from Portland to Australia. Portland is conveniently located just 2.9 mi from Portland’s city center.

  • How long is the flight from Portland, Maine to Australia?

    Departing from Portland, Maine to Australia will take you 29h 46m. The distance from Portland, Maine to Australia is about 10124 mi.

  • Can I find deals for flights from Portland to Australia that include hotel bookings?

    Yes. In addition to deals on Portland to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Australia?

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

  • Can I find deals for business class flights from Portland to Australia?

    Yes. Cheapflights offers flight deals from Portland to Australia 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 Portland, Maine to Australia?

    Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Australia (average of $251). Flying from Portland, Maine to Australia in January is currently the most expensive (average of $978). 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

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