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$580+ Cheap flights from Montana to Australia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — SYD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Montana to Australia

Keep the following information in mind while searching for Montana to Australia flight deals. Data was last updated September 15, 2025.

Round-trip from

$1,073
(United Airlines)

One-way from

$580
(Trip.com)

Popular in

January

Cheapest in

June

Average price

$1,282
From Montana to Australia
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One-way flight from Montana to Australia
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Highest demand for flights based on searches. 18% potential increase in price ($363 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($94 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Montana to Australia

Cheapest flights from Montana to Australia
Explore the most affordable flight options available from Montana to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/82:30 pmHLN - BNE
2 stops24h 00mUnited Airlines
Fri 1/911:40 amBNE - HLN
2 stops26h 46mUnited Airlines
Deal found 9/15$1,073
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:31 pmMSO - SYD
1 stop24h 24mAmerican Airlines
Thu 11/62:05 pmSYD - MSO
1 stop23h 50mAmerican Airlines
Deal found 9/14$1,132
This Expedia deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/291:37 pmBZN - MEL
2 stops28h 18mAir New Zealand
Wed 11/58:35 amMEL - BZN
2 stops45h 56mAir New Zealand
Deal found 9/13$1,297
This Air New Zealand deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:35 amBZN - MEL
3 stops33h 50mMultiple Airlines
Wed 11/58:35 amMEL - BZN
3 stops31h 05mMultiple Airlines
Deal found 9/13$1,300
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:10 pmMSO - SYD
2 stops43h 50mUnited Airlines
Sun 11/1612:10 pmSYD - MSO
2 stops27h 37mUnited Airlines
Deal found 9/14$1,307
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/45:28 pmBZN - SYD
2 stops45h 07mDelta
Wed 10/810:25 amSYD - BZN
2 stops28h 49mDelta
Deal found 9/14$1,355
This Alaska Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:22 amBZN - SYD
2 stops22h 23mAlaska Airlines
Sat 9/209:40 pmSYD - BZN
2 stops36h 48mAlaska Airlines
Deal found 9/14$1,365
This Jetabroad deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/305:30 amMSO - SYD
2 stops21h 15mHawaiian Airlines
Thu 11/69:40 pmSYD - MSO
3 stops33h 39mHawaiian Airlines
Deal found 9/14$1,376
This oojo deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:37 pmBZN - MEL
2 stops25h 48mAir New Zealand
Sun 12/711:30 amMEL - BZN
1 stop18h 29mAir New Zealand
Deal found 9/14$1,388
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:00 pmBZN - MEL
1 stop24h 00mUnited Airlines
Sun 12/711:30 amMEL - BZN
1 stop18h 29mUnited Airlines
Deal found 9/14$1,406
This American Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/291:58 pmBZN - MEL
1 stop22h 02mAmerican Airlines
Wed 11/54:05 pmMEL - BZN
1 stop38h 56mAmerican Airlines
Deal found 9/13$1,491
This Priceline deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:37 pmBZN - MEL
2 stops38h 53mAir New Zealand
Thu 11/66:50 pmMEL - BZN
2 stops59h 41mAir New Zealand
Deal found 9/15$1,493

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana to Australia 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, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Montana to Australia that are best for you.

Fly from

Montana

Fly to

Australia

Route

Depart

Return

Price

HelenaBrisbane

HLN - BNE

HLNBNE

Helena

Mon 12/8

2:30 pm-7:30 am

2 stops24h 00m

Brisbane

Fri 1/9

11:40 am-9:26 pm

2 stops26h 46m

$1,073

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Thu 10/30

1:31 pm-6:55 am

1 stop24h 24m

Sydney Kingsford Smith

Thu 11/6

2:05 pm-7:55 pm

1 stop23h 50m

$1,132

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

11:15 am-9:37 pm

2 stops28h 22m

$1,136

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Wed 2/11

7:00 am-7:25 am

2 stops30h 25m

Sydney Kingsford Smith

Tue 3/3

2:05 pm-9:37 pm

1 stop25h 32m

$1,137

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Thu 2/12

5:30 am-8:30 am

2 stops33h 00m

Sydney Kingsford Smith

Sat 3/7

10:40 am-11:21 pm

2 stops30h 41m

$1,275

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Thu 2/12

6:15 am-9:05 am

2 stops32h 50m

Sydney Kingsford Smith

Sat 3/7

12:10 pm-2:05 pm

1 stop19h 55m

$1,275

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

Wed 10/29

1:37 pm-10:55 am

2 stops28h 18m

Melbourne

Wed 11/5

8:35 am-12:31 pm

2 stops45h 56m

$1,297

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

Wed 10/29

6:35 am-9:25 am

3 stops33h 50m

Melbourne

Wed 11/5

8:35 am-9:40 pm

3 stops31h 05m

$1,300

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Sat 10/4

5:28 pm-7:35 am

2 stops45h 07m

Sydney Kingsford Smith

Wed 10/8

10:25 am-12:04 am

2 stops30h 39m

$1,355

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

Thu 11/13

1:37 pm-9:25 am

2 stops25h 48m

Melbourne

Sun 12/7

11:30 am-11:59 am

1 stop18h 29m

$1,388

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 31 results
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Best time to book a flight from Montana to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Montana with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montana to Australia

What is the cheapest month to book a flight from Montana to Australia?

Currently, March is the cheapest month in which you can book a flight from Montana to Australia (average of $1,032). Flying from Montana to Australia in December is currently the most expensive (average of $1,627). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MT to AU?

Find hourly flight availability from Montana to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Montana to Australia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Montana to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montana to Australia?

    A quick flight from Montana to Australia can take about 24h. United Airlines provides one of the quickest options available for as low as $1,073. Airlines will cover a distance of 7783 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Montana to Australia that include hotel bookings?

    Yes. In addition to deals on Montana to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to Australia.

  • Can I find deals for business class flights from Montana to Australia?

    Yes. Cheapflights offers flight deals from Montana to Australia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montana to Australia?

    Currently, March is the cheapest month in which you can book a flight from Montana to Australia (average of $1,032). Flying from Montana to Australia in December is currently the most expensive (average of $1,627). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Montana to Australia

Discover the top airline that operate flights from Montana to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$890Average$1,451FlexibilityNo cancel feeOn-time69%

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