What is the cheapest airline that flies from Montana to Australia?

United Airlines is the most popular carrier operating from Montana to Australia

How long is the flight from Montana to Australia?

Flight times from Montana to Australia vary, but if you’re flying out of Bozeman and flying into Sydney (one of the most popular routes), then the duration is 21h on average. Another popular route from Montana to Australia is flying from Missoula to Sydney, which will take roughly 24h 34m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Montana to Australia?

Prices for flights from Montana to Australia are updated daily.

How many operators does momondo search for flights from Montana to Australia?

As of December 2025, there is 1 operator available to choose from for flights from Montana to Australia.

How old do you have to be to fly from Montana to Australia?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montana to Australia.

What documentation or ID do you need to fly to Australia?

The necessary travel and health documents for your Australia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$943 Cheap Flights from Montana to Australia in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Montana to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:15 am - 6:30 am

HLN

BNE

32h 15m2 stops

10:40 am - 9:25 pm

BNE

HLN

26h 45m2 stops

$1,043United Airlines

Fri, Mar 20 - Tue, Mar 24

6:15 am - 6:30 am

HLN

BNE

32h 15m2 stops

10:40 am - 9:25 pm

BNE

HLN

26h 45m2 stops

$1,044United Airlines

Fri, Mar 20 - Tue, Mar 24

7:00 am - 6:55 am

MSO

SYD

29h 55m1 stop

2:05 pm - 9:41 pm

SYD

MSO

25h 36m1 stop

$1,098American Airlines

Wed, Feb 11 - Tue, Mar 3

7:00 am - 7:25 am

MSO

SYD

30h 25m2 stops

11:20 am - 9:41 pm

SYD

MSO

28h 21m2 stops

$1,151American Airlines

Thu, Feb 12 - Wed, Mar 4

8:30 am - 6:35 am

BZN

SYD

30h 05m2 stops

9:15 am - 11:59 pm

SYD

BZN

30h 44m2 stops

$1,218Delta

Mon, Jun 1 - Fri, Jun 12

3:50 pm - 8:30 am

BZN

SYD

22h 40m1 stop

2:15 pm - 3:10 pm

SYD

BZN

18h 55m1 stop

$1,263Delta

Sat, Jan 31 - Sat, Feb 7

6:30 pm - 6:50 pm

MSO

SYD

32h 20m3 stops

8:45 pm - 1:09 pm

SYD

MSO

32h 24m3 stops

$1,657Multiple Airlines

Fri, Apr 17 - Fri, Apr 24

11:40 am - 5:00 am

BZN

MEL

23h 20m1 stop

2:05 pm - 12:53 pm

MEL

BZN

64h 48m2 stops

$1,803Qantas Airways

Sat, Feb 21 - Wed, Feb 25

2:13 pm - 6:30 am

BZN

BNE

23h 17m1 stop

9:40 am - 1:19 pm

BNE

BZN

44h 39m2 stops

$1,832Qantas Airways

Fri, Feb 6 - Tue, Feb 10

6:15 am - 10:55 am

BZN

MEL

34h 40m3 stops

10:35 am - 9:12 pm

MEL

BZN

28h 37m3 stops

$2,538Multiple Airlines

Thu, Jan 15 - Sun, Feb 15

American Airlines flights from Montana to Australia

Our best American Airlines deals on Montana to Australia flight tickets

American Airlines

Feb 11

MSO7:00 amMissoula Johnson-Bell Field

29h 55m

1 stop

SYD6:55 amSydney Kingsford Smith

Mar 3

SYD2:05 pmSydney Kingsford Smith

25h 36m

1 stop

MSO9:41 pmMissoula Johnson-Bell Field

$1,098

Find similar

American Airlines

Feb 12

MSO7:00 amMissoula Johnson-Bell Field

30h 25m

2 stops

SYD7:25 amSydney Kingsford Smith

Mar 4

SYD11:20 amSydney Kingsford Smith

28h 21m

2 stops

MSO9:41 pmMissoula Johnson-Bell Field

$1,151

Find similar

American Airlines

Feb 12

MSO7:00 amMissoula Johnson-Bell Field

30h 25m

2 stops

SYD7:25 amSydney Kingsford Smith

Mar 4

SYD2:05 pmSydney Kingsford Smith

25h 36m

1 stop

MSO9:41 pmMissoula Johnson-Bell Field

$1,152

Find similar

Delta flights from Montana to Australia

Our best Delta deals on Montana to Australia flight tickets

Delta

Jun 1

BZN8:30 amBozeman Gallatin Field

30h 05m

2 stops

SYD6:35 amSydney Kingsford Smith

Jun 12

SYD9:15 amSydney Kingsford Smith

30h 44m

2 stops

BZN11:59 pmBozeman Gallatin Field

$1,218

Find similar

Delta

Jan 31

BZN3:50 pmBozeman Gallatin Field

22h 40m

1 stop

SYD8:30 amSydney Kingsford Smith

Feb 7

SYD2:15 pmSydney Kingsford Smith

18h 55m

1 stop

BZN3:10 pmBozeman Gallatin Field

$1,263

Find similar

Delta

Feb 12

MSO5:00 amMissoula Johnson-Bell Field

31h 50m

2 stops

SYD6:50 amSydney Kingsford Smith

Mar 7

SYD10:40 amSydney Kingsford Smith

30h 45m

2 stops

MSO11:25 pmMissoula Johnson-Bell Field

$1,268

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HelenaBrisbane

HLN - BNE

HLNBNE

Helena

Fri 3/20

6:15 am-6:30 am

2 stops32h 15m

Brisbane

Tue 3/24

10:40 am-9:25 pm

2 stops26h 45m

$1,043

HelenaBrisbane

HLN - BNE

HLNBNE

Helena

Fri 3/20

6:15 am-6:30 am

2 stops32h 15m

Brisbane

Tue 3/24

10:40 am-9:25 pm

2 stops26h 45m

$1,044

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Wed 2/11

7:00 am-6:55 am

1 stop29h 55m

Sydney Kingsford Smith

Tue 3/3

2:05 pm-9:41 pm

1 stop25h 36m

$1,098

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Thu 2/12

7:00 am-7:25 am

2 stops30h 25m

Sydney Kingsford Smith

Wed 3/4

11:20 am-9:41 pm

2 stops28h 21m

$1,151

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Mon 6/1

8:30 am-6:35 am

2 stops30h 05m

Sydney Kingsford Smith

Fri 6/12

9:15 am-11:59 pm

2 stops30h 44m

$1,218

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Sat 1/31

3:50 pm-8:30 am

1 stop22h 40m

Sydney Kingsford Smith

Sat 2/7

2:15 pm-3:10 pm

1 stop18h 55m

$1,263

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Fri 4/17

6:30 pm-6:50 pm

3 stops32h 20m

Sydney Kingsford Smith

Fri 4/24

8:45 pm-1:09 pm

3 stops32h 24m

$1,657

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

Sat 2/21

11:40 am-5:00 am

1 stop23h 20m

Melbourne

Wed 2/25

2:05 pm-12:53 pm

2 stops64h 48m

$1,803

BozemanBrisbane

BZN - BNE

BZNBNE

Bozeman Gallatin Field

Fri 2/6

2:13 pm-6:30 am

1 stop23h 17m

Brisbane

Tue 2/10

9:40 am-1:19 pm

2 stops44h 39m

$1,832

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

Thu 1/15

6:15 am-10:55 am

3 stops34h 40m

Melbourne

Sun 2/15

10:35 am-9:12 pm

3 stops28h 37m

$2,538

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montana to Australia

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 Australia?

The month of June is, on average, the cheapest month to fly to Australia from Montana, with most prices found around $1,122. If you aren’t able to travel during the month of June, then book flights to Australia from Montana during March instead. Flights to Australia in March, while not as cheap as those in June, still average around $1,126.

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

The cheapest day to depart from Montana to Australia is on a Saturday. Travelers who choose to depart for Australia on a Saturday will often find tickets for as low as $995. On the other hand, Friday is the most expensive day to depart from Montana because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $3,153.

What is the cheapest time of day to depart on your flight to Australia?

Flying to Australia from Montana in the morning is the least expensive time of day to depart. momondo users have found prices as low as $995 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,522 on average. Flights to Australia from Montana at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Montana to Australia flights?

You could potentially save up to 12% on your flight if you consider stops on a Montana to Australia flight.

Cheap Montana to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to Australia

Fastest flight time	22h 40m
Direct flights	None

The fastest flight from Montana to Australia takes 22h 40m

There are no direct flights from Montana to Australia. There are no popular flight routes from Montana to Australia.

Search flight deals

When did momondo last update prices for flights from Montana to Australia?
Prices for flights from Montana to Australia are updated daily.
How many operators does momondo search for flights from Montana to Australia?
As of December 2025, there is 1 operator available to choose from for flights from Montana to Australia.
How old do you have to be to fly from Montana to Australia?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montana to Australia.
What documentation or ID do you need to fly to Australia?
The necessary travel and health documents for your Australia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Montana to Australia

Compare and see reviews for airlines that fly from Montana to Australia with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $878	Free Cancellation	Rating 7.4 9,091 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Montana to Australia?

Finding the right flight to Australia from Montana is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Australia quick and easy, saving you time and money.

Can I find flights from Montana to Australia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Montana to Australia flights to just show those with flexible booking policies.

How can momondo help me find flights from Montana to Australia?

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 Australia from Montana.

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

If you are simply researching potential flights to Australia, momondo offers a useful price alert feature which will track prices for flights to Australia from Montana and alert you when they change.