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$644+ 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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — SYD
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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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 November 2, 2025.

This Delta deal was found by Cheapflights users on 11/1. 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.
Wed 11/125:25 amMSO - SYD
2 stops33h 05mDelta
Sun 11/1610:40 amSYD - MSO
2 stops19h 53mDelta
Deal found 11/1$1,169
This Delta deal was found by Cheapflights users on 11/2. 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.
Mon 11/35:35 amBZN - SYD
2 stops32h 55mDelta
Sun 11/910:40 amSYD - BZN
2 stops25h 14mDelta
Deal found 11/2$1,169
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:30 amBZN - SYD
2 stops33h 00mDelta
Mon 11/1710:40 amSYD - BZN
2 stops25h 14mDelta
Deal found 10/30$1,219
This United Airlines deal was found by Cheapflights users on 11/2. 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 11/34:00 pmBZN - SYD
1 stop23h 15mUnited Airlines
Sun 11/911:20 amSYD - BZN
1 stop19h 11mUnited Airlines
Deal found 11/2$1,249
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/156:30 amHLN - MEL
2 stops33h 00mUnited Airlines
Mon 12/221:00 pmMEL - HLN
2 stops26h 31mUnited Airlines
Deal found 10/31$1,284
This United Airlines deal was found by Cheapflights users on 10/30. 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 11/131:37 pmBZN - SYD
1 stop25h 28mUnited Airlines
Mon 11/1712:10 pmSYD - BZN
1 stop20h 36mUnited Airlines
Deal found 10/30$1,314
This United Airlines deal was found by Cheapflights users on 11/1. 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 11/69:47 amBTM - MEL
2 stops30h 13mUnited Airlines
Mon 11/101:00 pmMEL - BTM
2 stops27h 14mUnited Airlines
Deal found 11/1$1,342
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/176:30 amHLN - MEL
2 stops33h 00mUnited Airlines
Wed 12/2411:30 amMEL - HLN
2 stops28h 01mUnited Airlines
Deal found 11/2$1,444
This United Airlines deal was found by Cheapflights users on 11/1. 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 11/1$1,705
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/155:20 pmMSO - SYD
2 stops43h 40mUnited Airlines
Mon 12/222:00 pmSYD - MSO
2 stops25h 41mUnited Airlines
Deal found 10/31$1,869
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/251:30 pmBZN - SYD
1 stop25h 35mUnited Airlines
Thu 1/111:20 amSYD - BZN
1 stop19h 08mUnited Airlines
Deal found 11/1$1,876
This Gurufare deal was found by Cheapflights users on 11/1. 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.
Thu 12/254:26 pmBZN - SYD
2 stops26h 14mAir New Zealand
Thu 1/111:20 amSYD - BZN
1 stop19h 08mAir New Zealand
Deal found 11/1$1,947

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 November 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,169
(Delta)

One-way from

$644
(United Airlines)

Popular in

January

Cheapest in

June

Average price

$1,446
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
One-way flight from Montana to Australia
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($298 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($99 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 2, 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

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Wed 11/12

5:25 am-8:30 am

2 stops33h 05m

Sydney Kingsford Smith

Sun 11/16

10:40 am-12:19 am

2 stops31h 39m

$1,169

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Wed 2/11

6:00 am-6:20 am

2 stops30h 20m

Sydney Kingsford Smith

Tue 3/3

2:00 pm-9:57 pm

2 stops25h 57m

$1,169

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Wed 2/11

5:00 am-8:30 am

2 stops33h 30m

Sydney Kingsford Smith

Tue 3/3

2:15 pm-5:21 pm

2 stops21h 06m

$1,169

HelenaBrisbane

HLN - BNE

HLNBNE

Helena

Tue 3/17

6:15 am-6:30 am

2 stops32h 15m

Brisbane

Sat 3/21

10:40 am-8:59 pm

2 stops26h 19m

$1,214

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Wed 2/4

3:50 pm-8:30 am

1 stop22h 40m

Sydney Kingsford Smith

Sat 2/14

2:15 pm-3:49 pm

1 stop19h 34m

$1,214

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Thu 2/12

12:50 pm-6:50 am

2 stops24h 00m

Sydney Kingsford Smith

Wed 3/4

10:40 am-5:27 pm

2 stops24h 47m

$1,219

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Thu 11/13

5:30 am-8:30 am

2 stops33h 00m

Sydney Kingsford Smith

Mon 11/17

10:40 am-5:54 pm

2 stops25h 14m

$1,219

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Thu 2/12

5:30 am-6:50 am

2 stops31h 20m

Sydney Kingsford Smith

Sat 3/7

10:40 am-11:21 pm

2 stops30h 41m

$1,269

MissoulaSydney

MSO - SYD

MSOSYD

Missoula Johnson-Bell Field

Fri 4/17

5:40 am-6:35 am

2 stops32h 55m

Sydney Kingsford Smith

Thu 4/23

9:25 am-12:24 am

2 stops30h 59m

$1,269

BozemanSydney

BZN - SYD

BZNSYD

Bozeman Gallatin Field

Thu 4/30

5:45 am-6:35 am

2 stops32h 50m

Sydney Kingsford Smith

Thu 5/14

9:25 am-10:24 pm

2 stops28h 59m

$1,269

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/31

Showing 1-10 of 25 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, June is the cheapest month in which you can book a flight from Montana to Australia (average of $866). Flying from Montana to Australia in January is currently the most expensive (average of $1,665). 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 November 2, 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 23% 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 23h 43m. Delta provides one of the quickest options available for as low as $1,837. Airlines will cover a distance of 7805 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Montana to Australia one-way?

    $644 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Alaska Airlines and American Airlines, with prices starting from $817 and $9,008, respectively.

  • 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, June is the cheapest month in which you can book a flight from Montana to Australia (average of $866). Flying from Montana to Australia in January is currently the most expensive (average of $1,665). 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 November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$878Average$1,451FlexibilityNo cancel feeOn-time69%

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