How long is the flight from Montana to Australia?

Flight times from Montana to Australia vary, but if you’re flying out of Missoula and flying into Sydney (one of the most popular routes), then the duration is 20h 11m on average. Another popular route from Montana to Australia is flying from Kalispell to Sydney, which will take roughly 21h 12m. Keep in mind that layovers or delays could extend your travel time.

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

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

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 August 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.

$987 Cheap Flights from Montana to Australia in 2025

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

Cheap round-trip flights

1:31 pm - 7:25 amMSO-SYD

24h 54m2 stops

11:15 am - 8:06 pmSYD-MSO

26h 51m2 stops

$987American Airlines

Find Deal

mié., oct. 29 - sáb., nov. 8

1:31 pm - 6:55 amMSO-SYD

24h 24m1 stop

11:15 am - 8:06 pmSYD-MSO

26h 51m2 stops

$1,196American Airlines

Find Deal

mié., oct. 29 - sáb., nov. 8

7:25 pm - 7:45 pmBZN-SYD

32h 20m2 stops

9:40 pm - 2:14 pmSYD-BZN

32h 34m2 stops

$1,354Alaska Airlines

Find Deal

mar., ago. 19 - mar., ago. 26

5:30 am - 7:45 pmMSO-SYD

20h 15m2 stops

9:40 pm - 1:19 pmSYD-MSO

33h 39m2 stops

$1,363Alaska Airlines

Find Deal

mié., nov. 12 - dom., nov. 16

1:37 pm - 9:25 amBZN-MEL

25h 48m2 stops

11:30 am - 11:59 amMEL-BZN

18h 29m1 stop

$1,374Air New Zealand

Find Deal

jue., nov. 13 - dom., dic. 7

1:37 pm - 10:55 amBZN-MEL

27h 18m2 stops

11:30 am - 11:59 amMEL-BZN

18h 29m1 stop

$1,376Air New Zealand

Find Deal

jue., nov. 13 - dom., dic. 7

4:00 pm - 10:00 amBZN-MEL

24h 00m1 stop

11:30 am - 11:59 amMEL-BZN

18h 29m1 stop

$1,403United Airlines

Find Deal

jue., nov. 13 - dom., dic. 7

10:47 am - 10:00 amBZN-MEL

29h 13m2 stops

11:30 am - 3:31 pmMEL-BZN

22h 01m2 stops

$1,408United Airlines

Find Deal

jue., nov. 13 - dom., dic. 7

5:30 am - 7:45 pmMSO-SYD

21h 15m2 stops

9:40 pm - 1:19 pmSYD-MSO

33h 39m3 stops

$1,418Hawaiian Airlines

Find Deal

mié., oct. 29 - sáb., nov. 8

5:22 am - 8:35 amBZN-BNE

35h 13m3 stops

2:15 pm - 10:46 amBNE-BZN

36h 31m3 stops

$1,703Hawaiian Airlines

Find Deal

jue., ago. 21 - mar., ago. 26

Alaska Airlines flights from Montana to Australia

Our best Alaska Airlines deals on Montana to Australia flight tickets

Alaska Airlines

Aug 19

BZN7:25 pmBozeman Gallatin Field

32h 20m

2 stops

SYD7:45 pmSydney Kingsford Smith

Aug 26

SYD9:40 pmSydney Kingsford Smith

32h 34m

2 stops

BZN2:14 pmBozeman Gallatin Field

$1,354

Find similar

Alaska Airlines

Nov 12

MSO5:30 amMissoula Johnson-Bell Field

20h 15m

2 stops

SYD7:45 pmSydney Kingsford Smith

Nov 16

SYD9:40 pmSydney Kingsford Smith

33h 39m

2 stops

MSO1:19 pmMissoula Johnson-Bell Field

$1,363

Find similar

Delta flights from Montana to Australia

Our best Delta deals on Montana to Australia flight tickets

Delta

Oct 4

BZN11:55 amBozeman Gallatin Field

26h 40m

2 stops

SYD7:35 amSydney Kingsford Smith

Oct 8

SYD10:25 amSydney Kingsford Smith

24h 14m

2 stops

BZN5:39 pmBozeman Gallatin Field

$1,572

Find similar

Delta

Oct 4

BZN7:35 amBozeman Gallatin Field

31h 00m

2 stops

SYD6:35 amSydney Kingsford Smith

Oct 8

SYD10:25 amSydney Kingsford Smith

28h 49m

2 stops

BZN10:14 pmBozeman Gallatin Field

$1,573

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

mié. 10/29

1:31 pm-7:25 am

2 stops24h 54m

Sydney Kingsford Smith

sáb. 11/8

11:15 am-8:06 pm

2 stops26h 51m

$987

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

mié. 10/29

1:31 pm-6:55 am

1 stop24h 24m

Sydney Kingsford Smith

sáb. 11/8

11:15 am-8:06 pm

2 stops26h 51m

$1,196

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

mar. 8/19

7:25 pm-7:45 pm

2 stops32h 20m

Sydney Kingsford Smith

mar. 8/26

9:40 pm-2:14 pm

2 stops32h 34m

$1,354

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

mié. 11/12

5:30 am-7:45 pm

2 stops20h 15m

Sydney Kingsford Smith

dom. 11/16

9:40 pm-1:19 pm

2 stops33h 39m

$1,363

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

jue. 11/13

1:37 pm-9:25 am

2 stops25h 48m

Melbourne

dom. 12/7

11:30 am-11:59 am

1 stop18h 29m

$1,374

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

jue. 11/13

1:37 pm-10:55 am

2 stops27h 18m

Melbourne

dom. 12/7

11:30 am-11:59 am

1 stop18h 29m

$1,376

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

jue. 11/13

4:00 pm-10:00 am

1 stop24h 00m

Melbourne

dom. 12/7

11:30 am-11:59 am

1 stop18h 29m

$1,403

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

jue. 11/13

10:47 am-10:00 am

2 stops29h 13m

Melbourne

dom. 12/7

11:30 am-3:31 pm

2 stops22h 01m

$1,408

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

mié. 10/29

5:30 am-7:45 pm

2 stops21h 15m

Sydney Kingsford Smith

sáb. 11/8

9:40 pm-1:19 pm

3 stops33h 39m

$1,418

BozemanBrisbane

BZN - BNE

BZNBNE

Bozeman Gallatin Field

jue. 8/21

5:22 am-8:35 am

3 stops35h 13m

Brisbane

mar. 8/26

2:15 pm-10:46 am

3 stops36h 31m

$1,703

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 August is, on average, the cheapest month to fly to Australia from Montana, with most prices found around $984. If you aren’t able to travel during the month of August, then book flights to Australia from Montana during June instead. Flights to Australia in June, while not as cheap as those in August, still average around $1,122.

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 16% 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

Best Price Found	$4,961
Fastest flight time	20h 15m
Direct flights	None
Airports in Australia	3 airports

The best one-way flight to Australia from Montana in the past 72 hours is $4,961. The best round-trip flight deal from Montana to Australia found on momondo in the last 72 hours is $987.

The fastest flight from Montana to Australia takes 20h 15m

There are no direct flights from Montana to Australia. Popular non-direct routes for this connection are Missoula Johnson-Bell Field Airport - Sydney Kingsford Smith Airport, Bozeman Gallatin Field Airport - Sydney Kingsford Smith Airport and Bozeman Gallatin Field Airport - Melbourne Airport.

There are 3 airports near Australia: Melbourne (MEL), Brisbane (BNE), Sydney Kingsford Smith (SYD)

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 August 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 $890	Free Cancellation	Rating 7.4 8,917 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.