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$823+ Cheap flights from Portland, ME (PWM) to Sydney (SYD)

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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SYD
aug. 19 — aug. 261
tir. 8/19
tir. 8/26
1 adult, Economy
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Cheap flight deals from Portland to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated august 14, 2025.

Round-trip from

$1,455
(United Airlines)

One-way from

$823
(United Airlines)
From Portland to Sydney Kingsford Smith
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One-way flight from Portland to Sydney Kingsford Smith
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Find flight deals from Portland to Sydney

Cheapest flights from Portland to Sydney
Explore the most affordable flight options available from Portland to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on august 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/11. 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.
tor. 9/255:45 amPWM - SYD
2 stops35h 10mUnited Airlines
tor. 10/210:20 amSYD - PWM
2 stops25h 24mUnited Airlines
Deal found 8/11$1,455
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 9/161:57 pmPWM - SYD
2 stops27h 08mAmerican Airlines
lør. 9/279:10 amSYD - PWM
2 stops27h 33mAmerican Airlines
Deal found 8/11$1,458
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 9/259:28 amPWM - SYD
1 stop31h 27mAmerican Airlines
tor. 10/29:10 amSYD - PWM
2 stops25h 26mAmerican Airlines
Deal found 8/11$1,609
This United Airlines deal was found by Cheapflights users on 8/11. 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.
tor. 11/132:20 pmPWM - SYD
2 stops26h 45mUnited Airlines
man. 11/1712:10 pmSYD - PWM
2 stops22h 49mUnited Airlines
Deal found 8/11$1,653
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 11/136:00 amPWM - SYD
3 stops35h 35mAir Canada
man. 11/1711:20 amSYD - PWM
3 stops27h 57mAir Canada
Deal found 8/10$2,574
This Travelocity deal was found by Cheapflights users on 8/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 9/162:17 pmPWM - SYD
3 stops38h 43mMultiple Airlines
lør. 9/278:55 amSYD - PWM
2 stops51h 12mMultiple Airlines
Deal found 8/11$2,782
This Expedia deal was found by Cheapflights users on 8/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 9/252:17 pmPWM - SYD
2 stops73h 53mMultiple Airlines
tor. 10/28:55 pmSYD - PWM
3 stops63h 07mMultiple Airlines
Deal found 8/11$3,000
This Orbitz deal was found by Cheapflights users on 8/11. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 9/1610:39 amPWM - SYD
3 stops30h 41mAir Canada
lør. 9/279:20 amSYD - PWM
3 stops37h 51mAir Canada
Deal found 8/11$3,034
This Booking.com deal was found by Cheapflights users on 8/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 9/256:00 amPWM - SYD
3 stops35h 20mAir Canada
tor. 10/29:20 amSYD - PWM
3 stops27h 53mAir Canada
Deal found 8/11$3,099
This United Airlines deal was found by Cheapflights users on 8/11. 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.
fre. 12/195:30 amPWM - SYD
2 stops57h 30mUnited Airlines
lør. 1/311:20 amSYD - PWM
2 stops42h 54mUnited Airlines
Deal found 8/11$3,393

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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 2,558,603 searches. Data last updated august 14, 2025.
Use the filters below to find and compare flights from Portland to Sydney that are best for you.

Fly from

Portland

Fly to

Sydney

Route

Depart

Return

Price

PortlandSydney

PWM - SYD

PWMSYD

Portland

lør. 9/27

3:39 pm-6:55 am

2 stops25h 16m

Sydney Kingsford Smith

lør. 10/4

9:30 am-7:41 pm

2 stops24h 11m

$1,455

PortlandSydney

PWM - SYD

PWMSYD

Portland

tor. 9/25

5:45 am-6:55 am

2 stops35h 10m

Sydney Kingsford Smith

tor. 10/2

10:20 am-9:44 pm

2 stops25h 24m

$1,455

PortlandSydney

PWM - SYD

PWMSYD

Portland

tir. 9/16

1:57 pm-7:05 am

2 stops27h 08m

Sydney Kingsford Smith

lør. 9/27

9:10 am-10:43 pm

2 stops27h 33m

$1,458

PortlandSydney

PWM - SYD

PWMSYD

Portland

tor. 9/25

9:28 am-6:55 am

1 stop31h 27m

Sydney Kingsford Smith

tor. 10/2

9:10 am-8:36 pm

2 stops25h 26m

$1,609

PortlandSydney

PWM - SYD

PWMSYD

Portland

tor. 11/13

3:00 pm-9:05 am

2 stops26h 05m

Sydney Kingsford Smith

man. 11/17

11:20 am-9:50 pm

2 stops26h 30m

$1,653

PortlandSydney

PWM - SYD

PWMSYD

Portland

tor. 11/13

6:00 am-9:35 am

3 stops35h 35m

Sydney Kingsford Smith

man. 11/17

11:20 am-11:17 pm

3 stops27h 57m

$2,574

PortlandSydney

PWM - SYD

PWMSYD

Portland

fre. 9/26

6:25 pm-6:55 am

2 stops46h 30m

$823

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Best time to book a flight from Portland to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney 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 Sydney

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

Currently, February is the cheapest month in which you can book a flight from Portland, Maine to Sydney (average of $1,031). Flying from Portland, Maine to Sydney in December is currently the most expensive (average of $1,619). 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 Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Portland, Maine to Sydney round-trip?

    According to our current data, United Airlines ($1,455), and American Airlines ($1,458) offers the cheapest pricing from Portland, Maine to Sydney.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Portland, Maine to Sydney (average of $1,031). Flying from Portland, Maine to Sydney in December is currently the most expensive (average of $1,619). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Wollongong
Parramatta
Manly
Coogee

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