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Cheap flights from Portland, Maine to Sydney from $981

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, Maine to Sydney departing on 1/30. 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

Enter your travel dates to find the best prices.
Delta Logo
12:48 pm - 8:30 amPWM-SYD
27h 42m2 stops
Delta Logo
10:40 am - 12:08 pmSYD-PWM
41h 28m2 stops
$1,659Delta
Find Deal
Thu, Nov 13 - Mon, Nov 17
Delta Logo
6:00 am - 8:30 amPWM-SYD
34h 30m2 stops
Delta Logo
10:40 am - 10:23 pmSYD-PWM
27h 43m2 stops
$1,837Delta
Find Deal
Sun, Nov 30 - Sun, Dec 7
Delta Logo
1:25 pm - 8:30 amPWM-SYD
27h 05m2 stops
Delta Logo
10:40 am - 10:19 pmSYD-PWM
27h 39m2 stops
$2,268Delta
Find Deal
Thu, Nov 13 - Mon, Nov 17
United Airlines Logo
6:00 am - 9:05 amPWM-SYD
35h 05m3 stops
United Airlines Logo
11:50 am - 6:51 pmSYD-PWM
23h 01m2 stops
$2,467United Airlines
Find Deal
Tue, Dec 16 - Tue, Dec 23
Air Canada Logo
6:00 am - 9:35 amPWM-SYD
59h 35m3 stops
Air Canada Logo
11:20 am - 11:09 pmSYD-PWM
27h 49m2 stops
$2,836Air Canada
Find Deal
Sun, Nov 30 - Sun, Dec 7
Air Canada Logo
6:00 am - 9:35 amPWM-SYD
35h 35m3 stops
Air Canada Logo
11:20 am - 6:42 pmSYD-PWM
47h 22m3 stops
$2,964Air Canada
Find Deal
Sun, Nov 30 - Sun, Dec 7
American Airlines Logo
12:38 pm - 9:00 amPWM-SYD
28h 22m2 stops
American Airlines Logo
9:45 am - 11:59 pmSYD-PWM
30h 14m3 stops
$3,293American Airlines
Find Deal
Thu, Nov 13 - Mon, Nov 17
Air Canada Logo
6:00 am - 9:35 amPWM-SYD
35h 35m3 stops
Air Canada Logo
11:20 am - 11:17 pmSYD-PWM
27h 57m2 stops
$3,697Air Canada
Find Deal
Thu, Nov 13 - Mon, Nov 17
Air Canada Logo
6:00 am - 9:35 amPWM-SYD
35h 35m3 stops
Air Canada Logo
11:20 am - 11:17 pmSYD-PWM
27h 57m3 stops
$4,506Air Canada
Find Deal
Thu, Nov 13 - Mon, Nov 17
United Airlines Logo
3:00 pm - 9:05 amPWM-SYD
26h 05m2 stops
United Airlines Logo
12:10 pm - 11:59 pmSYD-PWM
27h 49m2 stops
$4,857United Airlines
Find Deal
Tue, Dec 16 - Tue, Dec 23

Delta flights from Portland, Maine to Sydney

Our best Delta deals on Portland, Maine to Sydney flight tickets
Delta
Nov 13
PWM12:48 pmPortland
27h 42m
2 stops
SYD8:30 amSydney Kingsford Smith
Nov 17
SYD10:40 amSydney Kingsford Smith
41h 28m
2 stops
PWM12:08 pmPortland
$1,659
Find similar
Delta
Nov 30
PWM6:00 amPortland
34h 30m
2 stops
SYD8:30 amSydney Kingsford Smith
Dec 7
SYD10:40 amSydney Kingsford Smith
27h 43m
2 stops
PWM10:23 pmPortland
$1,837
Find similar
Delta
Nov 13
PWM1:25 pmPortland
27h 05m
2 stops
SYD8:30 amSydney Kingsford Smith
Nov 17
SYD10:40 amSydney Kingsford Smith
27h 39m
2 stops
PWM10:19 pmPortland
$2,268
Find similar

United Airlines flights from Portland, Maine to Sydney

Our best United Airlines deals on Portland, Maine to Sydney flight tickets
United Airlines
Dec 16
PWM6:00 amPortland
35h 05m
3 stops
SYD9:05 amSydney Kingsford Smith
Dec 23
SYD11:50 amSydney Kingsford Smith
23h 01m
2 stops
PWM6:51 pmPortland
$2,467
Find similar
United Airlines
Dec 16
PWM3:00 pmPortland
26h 05m
2 stops
SYD9:05 amSydney Kingsford Smith
Dec 23
SYD12:10 pmSydney Kingsford Smith
27h 49m
2 stops
PWM11:59 pmPortland
$4,857
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine 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, momondo users made 832,500 searches. Data last updated November 2, 2025.
Use the filters below to find and compare flights from Portland, Maine to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandSydney

PWM - SYD

PWMSYD

Portland

Thu 11/13

12:48 pm-8:30 am

2 stops27h 42m

Sydney Kingsford Smith

Mon 11/17

10:40 am-12:08 pm

2 stops41h 28m

$1,659

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sun 11/30

6:00 am-8:30 am

2 stops34h 30m

Sydney Kingsford Smith

Sun 12/7

10:40 am-10:23 pm

2 stops27h 43m

$1,837

PortlandSydney

PWM - SYD

PWMSYD

Portland

Thu 11/13

1:25 pm-8:30 am

2 stops27h 05m

Sydney Kingsford Smith

Mon 11/17

10:40 am-10:19 pm

2 stops27h 39m

$2,268

PortlandSydney

PWM - SYD

PWMSYD

Portland

Tue 12/16

6:00 am-9:05 am

3 stops35h 05m

Sydney Kingsford Smith

Tue 12/23

11:50 am-6:51 pm

2 stops23h 01m

$2,467

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sun 11/30

6:00 am-9:35 am

3 stops59h 35m

Sydney Kingsford Smith

Sun 12/7

11:20 am-11:09 pm

2 stops27h 49m

$2,836

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sun 11/30

6:00 am-9:35 am

3 stops35h 35m

Sydney Kingsford Smith

Sun 12/7

11:20 am-6:42 pm

3 stops47h 22m

$2,964

PortlandSydney

PWM - SYD

PWMSYD

Portland

Thu 11/13

12:38 pm-9:00 am

2 stops28h 22m

Sydney Kingsford Smith

Mon 11/17

9:45 am-11:59 pm

3 stops30h 14m

$3,293

PortlandSydney

PWM - SYD

PWMSYD

Portland

Thu 11/13

6:00 am-9:35 am

3 stops35h 35m

Sydney Kingsford Smith

Mon 11/17

11:20 am-11:17 pm

2 stops27h 57m

$3,697

PortlandSydney

PWM - SYD

PWMSYD

Portland

Thu 11/13

6:00 am-9:35 am

3 stops35h 35m

Sydney Kingsford Smith

Mon 11/17

11:20 am-11:17 pm

3 stops27h 57m

$4,506

PortlandSydney

PWM - SYD

PWMSYD

Portland

Tue 12/16

3:00 pm-9:05 am

2 stops26h 05m

Sydney Kingsford Smith

Tue 12/23

12:10 pm-11:59 pm

2 stops27h 49m

$4,857

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Portland, Maine 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 cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Portland, Maine to Sydney is on a Wednesday when prices can be found for as low as $1,446. The most expensive day to fly to Sydney is Monday, with ticket prices averaging around $2,111.

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 noon. momondo users have found flights departing from Portland, Maine to Sydney at noon for as low as $1,492. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the afternoon, with an average ticket price of $1,496. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Portland, Maine to Sydney

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

Cheap Portland, Maine to Sydney (PWM to SYD) flight deals and tips

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

Direct flights

None
There are no direct flights from Portland, Maine to Sydney. There are no popular flight routes from Portland, Maine to Sydney.
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  • How far is Portland to Sydney Kingsford Smith by plane?

    There are 10122.6 mi between Portland and Sydney Kingsford Smith. 26h 05m is a normal flight duration for this route.

  • 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 refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 license 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.

Traveling to a place near Sydney?

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

Why use momondo?

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

It is quick and easy to find Portland to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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?

If you are not ready to book a flight from Portland to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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