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Cheap flights from Portland, Maine to Sydney from $678

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 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland, Maine to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:05 pm - 9:20 amPWM  Portland-SYD Sydney Kingsford Smith
27h 15m2 stops Washington, D.C. Dulles Intl San Francisco
United Airlines Logo
11:20 am - 9:27 pmSYD  Sydney Kingsford Smith-PWM Portland
50h 07m2 stops Los Angeles Los Angeles Chicago O'Hare Intl
$1,382United Airlines
Sun, Nov 22 - Fri, Dec 11
United Airlines Logo
11:35 am - 7:00 amPWM  Portland-SYD Sydney Kingsford Smith
29h 25m2 stops Chicago O'Hare Intl Los Angeles Los Angeles
United Airlines Logo
10:20 am - 9:46 pmSYD  Sydney Kingsford Smith-PWM Portland
25h 26m2 stops San Francisco Chicago O'Hare Intl
$1,412United Airlines
Thu, Sep 24 - Thu, Oct 1
United Airlines Logo
11:35 am - 7:00 amPWM  Portland-SYD Sydney Kingsford Smith
29h 25m2 stops Chicago O'Hare Intl Los Angeles Los Angeles
United Airlines Logo
9:30 am - 9:46 pmSYD  Sydney Kingsford Smith-PWM Portland
26h 16m2 stops Los Angeles Los Angeles Chicago O'Hare Intl
$1,412United Airlines
Fri, Sep 25 - Fri, Oct 2
United Airlines Logo
6:00 am - 6:55 amPWM  Portland-SYD Sydney Kingsford Smith
34h 55m3 stops Chicago O'Hare Intl Los Angeles Los Angeles San Francisco
United Airlines Logo
9:30 am - 8:22 pmSYD  Sydney Kingsford Smith-PWM Portland
24h 52m2 stops Los Angeles Los Angeles Newark
$1,412United Airlines
Fri, Sep 25 - Fri, Oct 2
Etihad Airways Logo
6:30 am - 6:30 amPWM  Portland-SYD Sydney Kingsford Smith
56h 00m2 stops New York John F Kennedy Intl Abu Dhabi Zayed Intl
Etihad Airways Logo
9:30 pm - 11:43 pmSYD  Sydney Kingsford Smith-PWM Portland
42h 13m2 stops Abu Dhabi Zayed Intl New York John F Kennedy Intl
$1,746Etihad Airways
Thu, Nov 12 - Mon, Nov 16
Etihad Airways Logo
6:30 am - 6:30 amPWM  Portland-SYD Sydney Kingsford Smith
57h 00m2 stops New York John F Kennedy Intl Abu Dhabi Zayed Intl
Etihad Airways Logo
4:50 pm - 11:43 pmSYD  Sydney Kingsford Smith-PWM Portland
46h 53m2 stops Abu Dhabi Zayed Intl New York John F Kennedy Intl
$1,827Etihad Airways
Thu, Oct 29 - Mon, Nov 2
Etihad Airways Logo
6:30 am - 5:45 pmPWM  Portland-SYD Sydney Kingsford Smith
44h 15m2 stops New York John F Kennedy Intl Abu Dhabi Zayed Intl
Etihad Airways Logo
9:30 pm - 11:43 pmSYD  Sydney Kingsford Smith-PWM Portland
42h 13m2 stops Abu Dhabi Zayed Intl New York John F Kennedy Intl
$1,827Etihad Airways
Thu, Oct 29 - Mon, Nov 2
Air Canada Logo
5:50 am - 8:35 amPWM  Portland-SYD Sydney Kingsford Smith
35h 45m2 stops Newark Vancouver Intl
Air Canada Logo
11:20 am - 11:21 pmSYD  Sydney Kingsford Smith-PWM Portland
28h 01m3 stops Vancouver Intl Toronto Pearson Intl Newark
$2,248Air Canada
Thu, Oct 29 - Mon, Nov 2
Multiple Airlines Logo
10:50 am - 9:35 amPWM  Portland-SYD Sydney Kingsford Smith
30h 45m3 stops Newark Toronto Pearson Intl Vancouver Intl
Multiple Airlines Logo
11:20 am - 9:27 pmSYD  Sydney Kingsford Smith-PWM Portland
26h 07m2 stops Vancouver Intl Chicago O'Hare Intl
$2,447Multiple Airlines
Sun, Nov 22 - Fri, Dec 11
Air Canada Logo
8:45 am - 9:35 amPWM  Portland-SYD Sydney Kingsford Smith
32h 50m2 stops Newark Vancouver Intl
Air Canada Logo
11:20 am - 11:21 pmSYD  Sydney Kingsford Smith-PWM Portland
28h 01m3 stops Vancouver Intl Toronto Pearson Intl Newark
$2,482Air Canada
Thu, Nov 12 - Mon, Nov 16

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United Airlines flights from Portland, Maine to Sydney

Our best United Airlines deals on Portland, Maine to Sydney flight tickets
United Airlines
Nov 22
PWM2:05 pmPortland
27h 15m
2 stops
SYD9:20 amSydney Kingsford Smith
Dec 11
SYD11:20 amSydney Kingsford Smith
50h 07m
2 stops
PWM9:27 pmPortland
$1,382
United Airlines
Sep 25
PWM11:35 amPortland
29h 25m
2 stops
SYD7:00 amSydney Kingsford Smith
Oct 2
SYD9:30 amSydney Kingsford Smith
26h 16m
2 stops
PWM9:46 pmPortland
$1,412

Air Canada flights from Portland, Maine to Sydney

Our best Air Canada deals on Portland, Maine to Sydney flight tickets
Air Canada
Oct 29
PWM5:50 amPortland
35h 45m
2 stops
SYD8:35 amSydney Kingsford Smith
Nov 2
SYD11:20 amSydney Kingsford Smith
28h 01m
3 stops
PWM11:21 pmPortland
$2,248
Air Canada
Nov 12
PWM8:45 amPortland
32h 50m
2 stops
SYD9:35 amSydney Kingsford Smith
Nov 16
SYD11:20 amSydney Kingsford Smith
28h 01m
3 stops
PWM11:21 pmPortland
$2,482
Air Canada
Oct 29
PWM10:50 amPortland
30h 45m
3 stops
SYD8:35 amSydney Kingsford Smith
Nov 2
SYD11:20 amSydney Kingsford Smith
28h 01m
3 stops
PWM11:21 pmPortland
$2,605

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 August 14, 2026.
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

Cheapest round-trip

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Sun 11/22

2:05 pm-9:20 am

2 stops27h 15m

Sydney Kingsford Smith

Fri 12/11

11:20 am-9:27 pm

2 stops50h 07m

$1,382
Quickest round-trip

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Thu 9/24

11:35 am-7:00 am

2 stops29h 25m

Sydney Kingsford Smith

Thu 10/1

10:20 am-9:46 pm

2 stops25h 26m

$1,412

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Fri 9/25

11:35 am-7:00 am

2 stops29h 25m

Sydney Kingsford Smith

Fri 10/2

9:30 am-9:46 pm

2 stops26h 16m

$1,412

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Fri 9/25

6:00 am-6:55 am

3 stops34h 55m

Sydney Kingsford Smith

Fri 10/2

9:30 am-8:22 pm

2 stops24h 52m

$1,412

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Thu 11/12

6:30 am-6:30 am

2 stops56h 00m

Sydney Kingsford Smith

Mon 11/16

9:30 pm-11:43 pm

2 stops42h 13m

$1,746

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Thu 10/29

6:30 am-6:30 am

2 stops57h 00m

Sydney Kingsford Smith

Mon 11/2

4:50 pm-11:43 pm

2 stops46h 53m

$1,827

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Thu 10/29

6:30 am-5:45 pm

2 stops44h 15m

Sydney Kingsford Smith

Mon 11/2

9:30 pm-11:43 pm

2 stops42h 13m

$1,827

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Thu 10/29

5:50 am-8:35 am

2 stops35h 45m

Sydney Kingsford Smith

Mon 11/2

11:20 am-11:21 pm

3 stops28h 01m

$2,248

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Sun 11/22

10:50 am-9:35 am

3 stops30h 45m

Sydney Kingsford Smith

Fri 12/11

11:20 am-9:27 pm

2 stops26h 07m

$2,447

PortlandSydney

PWM Portland - SYD Sydney Kingsford Smith

PWMSYD

Portland

Thu 11/12

8:45 am-9:35 am

2 stops32h 50m

Sydney Kingsford Smith

Mon 11/16

11:20 am-11:21 pm

3 stops28h 01m

$2,482

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Sydney from

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 airline that flies from Portland to Sydney Kingsford Smith?

American Airlines and Turkish Airlines are the most popular carriers operating from Portland to Sydney Kingsford Smith

What airlines fly to Sydney?

Qantas Airways, United Airlines and American Airlines are the top three most popular airlines that fly to Sydney from Portland, Maine according to our data. Qantas Airways is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 8 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

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

Fastest flight time

57h 00m

Direct flights

None
The fastest flight from Portland, Maine to Sydney takes 57h 00m
There are no direct flights from Portland, Maine to Sydney. There are no popular flight routes from Portland, Maine to Sydney.
Search flight deals

Frequently asked questions about flying from Portland, Maine to Sydney

  • How far is Portland to Sydney Kingsford Smith by plane?

    There are 10122.6 mi between Portland and Sydney Kingsford Smith. 57h 00m 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 many operators does momondo search for flights from Portland Airport to Sydney Kingsford Smith Airport?

  • 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.

  • What is the most popular airline from Portland, Maine to Sydney?

Best airlines flying from Portland, Maine to Sydney

Compare and see reviews for airlines that fly from Portland, Maine to Sydney with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $1,691Free CancellationRating
7.1
11,929 reviews
Search American Airlines flights

Traveling to a place near Sydney?

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