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$1,043+ Cheap flights from Montana to Australia

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — SYD
ene. 18 — ene. 251
dom. 1/18
dom. 1/25
1 adult, Economy
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Cheap 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 diciembre 19, 2025.

This oojo deal was found by Cheapflights users on 12/18. 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.
sáb. 12/201:20 pmBZN - MEL
1 stop26h 10mAir New Zealand
sáb. 1/1012:10 pmMEL - BZN
2 stops41h 53mAir New Zealand
Deal found 12/18$2,520
This American Airlines deal was found by Cheapflights users on 12/18. 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.
sáb. 12/201:36 pmBZN - MEL
2 stops25h 54mAmerican Airlines
sáb. 1/1012:00 pmMEL - BZN
2 stops28h 02mAmerican Airlines
Deal found 12/18$2,688
This United Airlines deal was found by Cheapflights users on 12/18. 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.
sáb. 12/201:20 pmBZN - MEL
1 stop26h 10mUnited Airlines
sáb. 1/1011:30 amMEL - BZN
1 stop19h 53mUnited Airlines
Deal found 12/18$2,802
This United Airlines deal was found by Cheapflights users on 12/18. 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.
jue. 12/181:30 pmBZN - SYD
1 stop25h 35mUnited Airlines
vie. 1/211:20 amSYD - BZN
1 stop19h 08mUnited Airlines
Deal found 12/18$3,108
This Air New Zealand deal was found by Cheapflights users on 12/17. 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.
sáb. 12/206:15 amBZN - MEL
3 stops33h 10mMultiple Airlines
sáb. 1/108:35 amMEL - BZN
3 stops30h 58mMultiple Airlines
Deal found 12/17$3,282
This Gurufare deal was found by Cheapflights users on 12/18. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/181:30 pmBZN - SYD
1 stop25h 35mAir New Zealand
sáb. 1/37:45 amSYD - BZN
2 stops46h 43mAir New Zealand
Deal found 12/18$3,388
This United Airlines deal was found by Cheapflights users on 12/17. 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.
jue. 12/184:26 pmBZN - SYD
1 stop22h 49mUnited Airlines
sáb. 1/312:10 pmSYD - BZN
1 stop21h 14mUnited Airlines
Deal found 12/17$3,444
This United Airlines deal was found by Cheapflights users on 12/17. 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.
mié. 12/1710:49 amBZN - SYD
2 stops26h 11mUnited Airlines
vie. 1/211:20 amSYD - BZN
1 stop19h 08mUnited Airlines
Deal found 12/17$3,449
This United Airlines deal was found by Cheapflights users on 12/18. 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.
lun. 12/221:39 pmFCA - SYD
1 stop25h 36mUnited Airlines
mié. 12/241:00 pmSYD - FCA
2 stops41h 55mUnited Airlines
Deal found 12/18$3,532
This FlightHub deal was found by Cheapflights users on 12/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/226:05 amFCA - SYD
2 stops42h 45mQatar Airways
mié. 12/249:40 pmSYD - FCA
2 stops44h 35mQatar Airways
Deal found 12/18$3,544
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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.
jue. 12/187:56 pmBZN - SYD
3 stops29h 49mMultiple Airlines
vie. 1/29:40 pmSYD - BZN
2 stops32h 23mMultiple Airlines
Deal found 12/18$3,819
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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.
jue. 12/187:56 pmBZN - SYD
2 stops29h 49mMultiple Airlines
sáb. 1/39:40 pmSYD - BZN
3 stops31h 17mMultiple Airlines
Deal found 12/18$4,010

Find flight deals from Montana to Australia

Keep the following information in mind while searching for Montana to Australia flight deals. Data was last updated diciembre 19, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,043
(United Airlines)

Popular in

January

Cheapest in

June

Average price

$1,539
Provider with most accurate pricing for Bozeman Gallatin Field-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Sydney Kingsford Smith flights.
Search Deals
From Montana to Australia
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($309 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($101 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 diciembre 19, 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

vie. 3/20

6:15 am-6:30 am

2 stops32h 15m

Brisbane

mar. 3/24

10:40 am-9:25 pm

2 stops26h 45m

$1,043

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

mié. 2/11

2:37 pm-9:15 am

2 stops24h 38m

Sydney Kingsford Smith

mar. 3/3

12:10 pm-4:09 pm

2 stops21h 59m

$1,168

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

jue. 2/12

7:00 am-7:25 am

2 stops30h 25m

Sydney Kingsford Smith

sáb. 3/7

2:05 pm-9:41 pm

1 stop25h 36m

$1,202

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

lun. 6/1

3:40 pm-6:35 am

2 stops22h 55m

Sydney Kingsford Smith

jue. 6/11

9:15 am-11:59 pm

2 stops30h 44m

$1,218

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

lun. 6/1

5:45 am-6:35 am

2 stops32h 50m

Sydney Kingsford Smith

vie. 6/12

9:15 am-2:36 pm

2 stops21h 21m

$1,218

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

mié. 2/11

1:21 pm-9:00 am

2 stops25h 39m

Sydney Kingsford Smith

mar. 3/3

11:20 am-9:41 pm

2 stops28h 21m

$1,240

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

dom. 2/1

7:00 am-6:55 am

1 stop29h 55m

Sydney Kingsford Smith

dom. 2/8

2:05 pm-8:45 pm

1 stop24h 40m

$1,256

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

sáb. 1/31

3:50 pm-8:30 am

1 stop22h 40m

Sydney Kingsford Smith

sáb. 2/7

2:15 pm-3:10 pm

1 stop18h 55m

$1,263

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

jue. 2/12

5:00 am-6:50 am

2 stops31h 50m

Sydney Kingsford Smith

sáb. 3/7

10:40 am-11:25 pm

2 stops30h 45m

$1,268

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

sáb. 5/2

8:30 am-6:35 am

2 stops30h 05m

Sydney Kingsford Smith

jue. 5/14

9:15 am-11:59 pm

2 stops30h 44m

$1,268

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 26 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, September is the cheapest month in which you can book a flight from Montana to Australia (average of $847). Flying from Montana to Australia in January is currently the most expensive (average of $1,424). 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 diciembre 19, 2025.

A simple way to save on the total cost of your ticket is to fly from Montana to Australia in the afternoon. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the evening.

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 22h 55m. United Airlines provides one of the quickest options available for as low as $1,218. Airlines will cover a distance of 8183 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, September is the cheapest month in which you can book a flight from Montana to Australia (average of $847). Flying from Montana to Australia in January is currently the most expensive (average of $1,424). 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 diciembre 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$878Average$1,502FlexibilityNo cancel feeOn-time69%

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