How long does it take to fly to Sydney?

Flight times from Maine to Sydney vary, but if you’re flying out of Portland and flying into Sydney (one of the most popular routes), then the duration is 25h 53m on average. Another popular route from Maine to Sydney is flying from Bangor to Sydney, which will take roughly 33h. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Maine to Sydney Kingsford Smith?

United Airlines, Delta, and Air Canada are the most popular carriers operating from Maine to Sydney Kingsford Smith

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

Prices for flights from Maine to Sydney Kingsford Smith Airport refresh daily.

How many operators does momondo search for flights from Maine to Sydney Kingsford Smith Airport?

There are 10 operators available for flights from Maine to Sydney Kingsford Smith Airport as of September 2025.

How old do you have to be to fly from Maine to Sydney Kingsford Smith 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 Maine 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.

$609 Cheap Flights from Maine to Sydney in 2025/26

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Find the cheapest flights from Maine to Sydney

Round-trip

One-way

Last minute

Cheap round-trip flights

8:15 am - 10:20 amBOS-SYD

34h 05m2 stops

2:05 pm - 11:22 pmSYD-BOS

25h 17m1 stop

$1,126Qantas Airways

Find Deal

Mon, Nov 10 - Sun, Nov 23

12:00 pm - 9:20 amBOS-SYD

29h 20m2 stops

2:05 pm - 9:36 pmSYD-BOS

23h 31m1 stop

$1,129Qantas Airways

Find Deal

Mon, Nov 10 - Sun, Nov 23

4:23 pm - 9:50 pmBOS-SYD

37h 27m2 stops

2:10 pm - 11:00 pmSYD-BOS

24h 50m2 stops

$1,162Fiji Airways

Find Deal

Tue, Feb 10 - Tue, Feb 24

5:55 pm - 7:45 pmBOS-SYD

33h 50m2 stops

9:40 pm - 4:46 pmSYD-BOS

35h 06m2 stops

$1,183Alaska Airlines

Find Deal

Mon, Jan 12 - Wed, Jan 21

6:23 pm - 7:45 pmBOS-SYD

34h 22m2 stops

9:40 pm - 7:29 amSYD-BOS

25h 49m2 stops

$1,202Alaska Airlines

Find Deal

Wed, Oct 29 - Sun, Nov 9

12:38 pm - 8:15 pmBOS-SYD

39h 37m2 stops

10:20 am - 9:27 pmSYD-BOS

50h 07m2 stops

$1,203Multiple Airlines

Find Deal

Sun, Mar 1 - Sun, Mar 15

12:38 pm - 8:15 pmBOS-SYD

39h 37m2 stops

10:20 am - 2:52 pmSYD-BOS

43h 32m3 stops

$1,209Multiple Airlines

Find Deal

Sun, Mar 1 - Sun, Mar 15

3:40 pm - 8:35 amBOS-SYD

25h 55m2 stops

11:20 am - 2:52 pmSYD-BOS

43h 32m2 stops

$1,217Air Canada

Find Deal

Tue, Oct 28 - Fri, Nov 14

3:40 pm - 8:35 amBOS-SYD

25h 55m2 stops

11:20 am - 9:32 amSYD-BOS

38h 12m3 stops

$1,224Air Canada

Find Deal

Tue, Oct 28 - Fri, Nov 14

4:22 pm - 9:50 pmBOS-SYD

37h 28m2 stops

2:10 pm - 11:00 pmSYD-BOS

24h 50m2 stops

$1,259Fiji Airways

Find Deal

Sat, Feb 21 - Tue, Mar 3

United Airlines flights from Maine to Sydney

Our best United Airlines deals on Maine to Sydney flight tickets

United Airlines

Sep 28

BOS6:18 pmBoston Logan Intl

22h 37m

1 stop

SYD6:55 amSydney Kingsford Smith

Oct 12

SYD10:30 amSydney Kingsford Smith

23h 26m

2 stops

BOS6:56 pmBoston Logan Intl

$1,117

Find similar

United Airlines

Sep 28

BOS12:35 pmBoston Logan Intl

28h 20m

2 stops

SYD6:55 amSydney Kingsford Smith

Oct 12

SYD10:30 amSydney Kingsford Smith

34h 30m

2 stops

BOS6:00 amBoston Logan Intl

$1,119

Find similar

United Airlines

Sep 27

BOS3:17 pmBoston Logan Intl

25h 43m

2 stops

SYD7:00 amSydney Kingsford Smith

Oct 5

SYD10:30 amSydney Kingsford Smith

26h 08m

2 stops

BOS9:38 pmBoston Logan Intl

$1,131

Find similar

Alaska Airlines flights from Maine to Sydney

Our best Alaska Airlines deals on Maine to Sydney flight tickets

Alaska Airlines

Jan 12

BOS5:55 pmBoston Logan Intl

33h 50m

2 stops

SYD7:45 pmSydney Kingsford Smith

Jan 21

SYD9:40 pmSydney Kingsford Smith

35h 06m

2 stops

BOS4:46 pmBoston Logan Intl

$1,183

Find similar

Alaska Airlines

Oct 29

BOS6:23 pmBoston Logan Intl

34h 22m

2 stops

SYD7:45 pmSydney Kingsford Smith

Nov 9

SYD9:40 pmSydney Kingsford Smith

25h 49m

2 stops

BOS7:29 amBoston Logan Intl

$1,202

Find similar

Alaska Airlines

Feb 21

BOS5:55 pmBoston Logan Intl

57h 50m

2 stops

SYD7:45 pmSydney Kingsford Smith

Feb 27

SYD9:40 pmSydney Kingsford Smith

25h 36m

2 stops

BOS7:16 amBoston Logan Intl

$1,218

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Mon 11/10

8:15 am-10:20 am

2 stops34h 05m

Sydney Kingsford Smith

Sun 11/23

2:05 pm-11:22 pm

1 stop25h 17m

$1,126

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Mon 11/10

12:00 pm-9:20 am

2 stops29h 20m

Sydney Kingsford Smith

Sun 11/23

2:05 pm-9:36 pm

1 stop23h 31m

$1,129

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 2/10

4:23 pm-9:50 pm

2 stops37h 27m

Sydney Kingsford Smith

Tue 2/24

2:10 pm-11:00 pm

2 stops24h 50m

$1,162

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Mon 1/12

5:55 pm-7:45 pm

2 stops33h 50m

Sydney Kingsford Smith

Wed 1/21

9:40 pm-4:46 pm

2 stops35h 06m

$1,183

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Wed 10/29

6:23 pm-7:45 pm

2 stops34h 22m

Sydney Kingsford Smith

Sun 11/9

9:40 pm-7:29 am

2 stops25h 49m

$1,202

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sun 3/1

12:38 pm-8:15 pm

2 stops39h 37m

Sydney Kingsford Smith

Sun 3/15

10:20 am-9:27 pm

2 stops50h 07m

$1,203

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sun 3/1

12:38 pm-8:15 pm

2 stops39h 37m

Sydney Kingsford Smith

Sun 3/15

10:20 am-2:52 pm

3 stops43h 32m

$1,209

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 10/28

3:40 pm-8:35 am

2 stops25h 55m

Sydney Kingsford Smith

Fri 11/14

11:20 am-2:52 pm

2 stops43h 32m

$1,217

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 10/28

3:40 pm-8:35 am

2 stops25h 55m

Sydney Kingsford Smith

Fri 11/14

11:20 am-9:32 am

3 stops38h 12m

$1,224

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sat 2/21

4:22 pm-9:50 pm

2 stops37h 28m

Sydney Kingsford Smith

Tue 3/3

2:10 pm-11:00 pm

2 stops24h 50m

$1,259

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from 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

Prices

Airlines

Other information

What is the cheapest month to fly to Sydney?

In general, September is the cheapest month to fly from Maine to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,243. If you are unable to visit Sydney during the month of September, then departing from Maine during the month March is also very affordable. Most momondo users find prices during this month for around $1,248.

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

The cheapest day to depart from Maine to Sydney is on a Wednesday when prices can be found for as low as $1,444. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,562.

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 in the morning. momondo users have found flights departing from Maine to Sydney in the morning for as low as $1,438. 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 evening, with an average ticket price of $1,494. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Sydney from Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,428 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Maine for as low as $1,312 on momondo.

Cheap Maine to Sydney flight deals and tips

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

Direct flights	None

There are no direct flights from Maine to Sydney. There are no popular flight routes from Maine to Sydney.

Search flight deals

When did momondo last update prices for flights from Maine to Sydney Kingsford Smith Airport?
Prices for flights from Maine to Sydney Kingsford Smith Airport refresh daily.
How many operators does momondo search for flights from Maine to Sydney Kingsford Smith Airport?
There are 10 operators available for flights from Maine to Sydney Kingsford Smith Airport as of September 2025.
How old do you have to be to fly from Maine to Sydney Kingsford Smith 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 Maine 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.

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Maine to Sydney. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Sydney from Maine which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Maine to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Maine to Sydney flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.