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$714+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — SYD
May 2 — May 91
Sat 5/2
Sat 5/9
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 April 2, 2026.

This United Airlines deal was found by Cheapflights users on 3/31. 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 6/14:17 pm
BZN
-
SYD
1 stop22h 38m
United Airlines
Fri 6/129:30 am
SYD
-
BZN
1 stop22h 44m
United Airlines
Deal found 3/31$1,365
This United Airlines deal was found by Cheapflights users on 3/30. 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 6/14:17 pm
BZN
-
SYD
1 stop22h 38m
United Airlines
Thu 6/1110:20 am
SYD
-
BZN
1 stop21h 01m
United Airlines
Deal found 3/30$1,366
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sat 5/22:40 pm
BZN
-
SYD
3 stops48h 15m
United Airlines
Fri 5/159:30 am
SYD
-
BZN
1 stop19h 00m
United Airlines
Deal found 3/31$1,380
This American Airlines deal was found by Cheapflights users on 3/30. 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 5/146:45 am
MSO
-
SYD
1 stop32h 10m
American Airlines
Thu 5/219:10 am
SYD
-
MSO
1 stop23h 04m
American Airlines
Deal found 3/30$1,415
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sat 5/24:18 pm
BZN
-
SYD
1 stop22h 37m
United Airlines
Thu 5/1410:20 am
SYD
-
BZN
1 stop21h 02m
United Airlines
Deal found 3/31$1,425
This United Airlines deal was found by Cheapflights users on 3/30. 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 4/301:37 pm
BZN
-
SYD
1 stop25h 23m
United Airlines
Thu 5/149:30 am
SYD
-
BZN
1 stop19h 00m
United Airlines
Deal found 3/30$1,426
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Fri 10/95:00 pm
FCA
-
SYD
2 stops46h 00m
United Airlines
Thu 10/2211:20 am
SYD
-
FCA
2 stops27h 10m
United Airlines
Deal found 3/31$1,426
This American Airlines deal was found by Cheapflights users on 3/30. 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 4/301:43 pm
BZN
-
SYD
2 stops25h 47m
American Airlines
Thu 5/145:50 pm
SYD
-
BZN
2 stops35h 01m
American Airlines
Deal found 3/30$1,427
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sat 8/81:10 pm
BZN
-
SYD
1 stop25h 50m
United Airlines
Wed 8/129:30 am
SYD
-
BZN
1 stop21h 26m
United Airlines
Deal found 3/31$1,495
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sun 5/244:11 pm
FCA
-
SYD
1 stop22h 44m
United Airlines
Wed 5/279:30 am
SYD
-
FCA
1 stop18h 57m
United Airlines
Deal found 3/31$1,495
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sat 5/166:15 am
MSO
-
SYD
2 stops32h 45m
United Airlines
Wed 5/209:30 am
SYD
-
MSO
2 stops22h 34m
United Airlines
Deal found 3/31$1,530
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sun 5/104:18 pm
BZN
-
BNE
1 stop22h 12m
United Airlines
Wed 7/2210:30 am
BNE
-
BZN
1 stop20h 51m
United Airlines
Deal found 3/31$1,753

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 April 2, 2026.

Round-trip from

$1,365
(United Airlines)

One-way from

$714
(Delta)

Popular in

August

Cheapest in

June

Average price

$1,360
From Montana to Australia
Search Deals
One-way flight from Montana to Australia
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($258 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($92 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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 April 2, 2026.
Use the filters below to find and compare flights from Montana to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Mon 6/1

5:16 pm-7:00 am

1 stop21h 44m

Sydney Kingsford Smith

Thu 6/11

10:20 am-3:21 pm

1 stop21h 01m

$1,365

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Mon 6/1

4:17 pm-6:55 am

1 stop22h 38m

Sydney Kingsford Smith

Fri 6/12

9:30 am-4:14 pm

1 stop22h 44m

$1,366

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Thu 6/4

4:29 pm-6:55 am

2 stops22h 26m

Sydney Kingsford Smith

Mon 6/15

9:30 am-4:14 pm

1 stop22h 44m

$1,366

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Sat 5/2

2:40 pm-6:55 am

3 stops48h 15m

Sydney Kingsford Smith

Fri 5/15

9:30 am-12:30 pm

1 stop19h 00m

$1,380

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Thu 5/14

1:08 pm-7:30 am

2 stops26h 22m

Sydney Kingsford Smith

Thu 5/21

12:00 pm-10:38 pm

1 stop26h 38m

$1,419
Quickest round-trip

KalispellSydney

FCA - SYD

FCASYD

Kalispell Glacier Park

Sun 5/24

4:11 pm-6:55 am

1 stop22h 44m

Sydney Kingsford Smith

Wed 5/27

9:30 am-12:27 pm

1 stop18h 57m

$1,495

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Sat 5/16

6:15 am-7:00 am

2 stops32h 45m

Sydney Kingsford Smith

Wed 5/20

9:30 am-4:04 pm

2 stops22h 34m

$1,530

BozemanBrisbane

BZN - BNE

BZNBNE

Bozeman Gallatin Field

Sun 5/10

4:18 pm-6:30 am

1 stop22h 12m

Brisbane

Wed 7/22

10:30 am-3:21 pm

1 stop20h 51m

$1,753

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

Mon 4/20

4:20 pm-10:55 am

2 stops26h 35m

Melbourne

Mon 5/4

7:50 pm-3:22 pm

2 stops35h 32m

$1,897

BozemanMelbourne

BZN - MEL

BZNMEL

Bozeman Gallatin Field

Mon 4/20

4:20 pm-8:15 am

1 stop23h 55m

Melbourne

Mon 5/4

10:55 am-3:22 pm

1 stop20h 27m

$1,898

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 17 resultsSorted by cheapest first
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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 $866). Flying from Montana to Australia in August is currently the most expensive (average of $2,292). 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.

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 21h 44m. United Airlines provides one of the quickest options available for as low as $1,365. 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 $866). Flying from Montana to Australia in August is currently the most expensive (average of $2,292). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 April 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$878Average$1,521FlexibilityNo cancel feeOn-time69%

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