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$965+ Cheap flights from Idaho 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap flight deals from Idaho to Australia

Keep the following information in mind while searching for Idaho to Australia flight deals. Data was last updated April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,097
(StudentUniverse)

One-way from

$965

Popular in

December

Cheapest in

May

Average price

$1,164
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Sydney Kingsford Smith flights.
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From Idaho to Australia
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One-way flight from Idaho to Australia
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Highest demand for flights based on searches. 13% potential increase in price ($226 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Idaho to Australia

Cheapest flights from Idaho to Australia
Explore the most affordable flight options available from Idaho to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This StudentUniverse deal was found by Cheapflights users on 4/28. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/202:40 pmGEG - SYD
2 stops24h 05mMultiple Airlines
Mon 10/271:55 pmSYD - GEG
2 stops25h 29mMultiple Airlines
Deal found 4/28$1,097
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 7/311:23 pmGEG - SYD
2 stops37h 22mAlaska Airlines
Sat 8/169:40 pmSYD - GEG
2 stops35h 27mAlaska Airlines
Deal found 4/29$1,186
This StudentUniverse deal was found by Cheapflights users on 4/28. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/207:15 amGEG - SYD
2 stops33h 20mAir New Zealand
Mon 10/2712:10 pmSYD - GEG
1 stop27h 14mAir New Zealand
Deal found 4/28$1,236
This StudentUniverse deal was found by Cheapflights users on 4/28. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/202:40 pmGEG - SYD
1 stop23h 25mQantas Airways
Mon 10/271:30 pmSYD - GEG
1 stop25h 13mQantas Airways
Deal found 4/28$1,255
This United Airlines deal was found by Cheapflights users on 4/28. 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 8/133:28 pmGEG - BNE
1 stop22h 02mUnited Airlines
Wed 8/2710:30 amBNE - GEG
2 stops27h 33mUnited Airlines
Deal found 4/28$1,259
This Ovago deal was found by Cheapflights users on 4/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/136:49 pmGEG - BNE
1 stop41h 36mQantas Airways
Wed 8/278:05 pmBNE - GEG
1 stop19h 20mQantas Airways
Deal found 4/28$1,309
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/136:51 pmBOI - SYD
1 stop20h 39mMultiple Airlines
Fri 6/204:20 pmSYD - BOI
2 stops34h 25mMultiple Airlines
Deal found 4/29$1,332
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 12/301:00 pmBOI - SYD
1 stop23h 20mUnited Airlines
Sun 2/1512:10 pmSYD - BOI
1 stop17h 27mUnited Airlines
Deal found 4/29$1,358
This United Airlines deal was found by Cheapflights users on 4/28. 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 7/313:28 pmGEG - SYD
1 stop22h 27mUnited Airlines
Sat 8/169:30 amSYD - GEG
2 stops28h 33mUnited Airlines
Deal found 4/28$1,362
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Mon 5/263:18 pmGEG - SYD
2 stops22h 47mAmerican Airlines
Mon 6/29:10 amSYD - GEG
2 stops21h 27mAmerican Airlines
Deal found 4/28$1,397
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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.
Fri 6/135:43 pmBOI - SYD
2 stops34h 02mAlaska Airlines
Fri 6/209:40 pmSYD - BOI
2 stops33h 24mAlaska Airlines
Deal found 4/29$1,461
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Mon 5/266:20 amGEG - BNE
2 stops35h 40mAir New Zealand
Mon 6/27:35 pmBNE - GEG
2 stops44h 39mAir New Zealand
Deal found 4/29$1,649

Cheapflights Fare Finder

Customize your flight search to find flights from Idaho 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 30, 2025.
Use the filters below to find and compare flights from Idaho to Australia that are best for you.

Fly from

Idaho

Fly to

Australia

Route

Depart

Return

Price

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 10/20

2:40 pm-8:45 am

2 stops24h 05m

Sydney Kingsford Smith

Mon 10/27

1:55 pm-9:24 pm

2 stops25h 29m

$1,097

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 7/31

1:23 pm-7:45 pm

2 stops37h 22m

Sydney Kingsford Smith

Sat 8/16

9:40 pm-4:07 pm

2 stops35h 27m

$1,186

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 10/20

7:15 am-10:35 am

2 stops33h 20m

Sydney Kingsford Smith

Mon 10/27

12:10 pm-9:24 pm

1 stop27h 14m

$1,236

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 10/20

2:40 pm-8:05 am

1 stop23h 25m

Sydney Kingsford Smith

Mon 10/27

1:30 pm-8:43 pm

1 stop25h 13m

$1,255

SpokaneBrisbane

GEG - BNE

GEGBNE

Spokane

Wed 8/13

3:28 pm-6:30 am

1 stop22h 02m

Brisbane

Wed 8/27

10:30 am-9:03 pm

2 stops27h 33m

$1,259

SpokaneBrisbane

GEG - BNE

GEGBNE

Spokane

Wed 8/13

6:49 pm-5:25 am

1 stop41h 36m

Brisbane

Wed 8/27

8:05 pm-10:25 pm

1 stop19h 20m

$1,309

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Fri 6/13

6:51 pm-7:30 am

1 stop20h 39m

Sydney Kingsford Smith

Fri 6/20

4:20 pm-10:45 am

2 stops34h 25m

$1,332

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 7/31

3:28 pm-6:55 am

1 stop22h 27m

Sydney Kingsford Smith

Sat 8/16

9:30 am-9:03 pm

2 stops28h 33m

$1,362

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 5/26

3:18 pm-7:05 am

2 stops22h 47m

Sydney Kingsford Smith

Mon 6/2

9:10 am-1:37 pm

2 stops21h 27m

$1,397

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Fri 6/13

5:43 pm-7:45 pm

2 stops34h 02m

Sydney Kingsford Smith

Fri 6/20

9:40 pm-3:04 pm

2 stops33h 24m

$1,461

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 21 results
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Best time to book a flight from Idaho to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Idaho 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 Idaho to Australia

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

Currently, March is the cheapest month in which you can book a flight from Idaho to Australia (average of $1,043). Flying from Idaho to Australia in December is currently the most expensive (average of $1,643). 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 ID to AU?

Find hourly flight availability from Idaho 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 April 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Australia as you normally would.

Rainfall in Australia by month

Plan your trip to Australia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Australia ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Australia when rainfall is around 2.0 in.

Temperature in Australia by month

Plan your trip to Australia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Australia. Reviews last updated April 30, 2025.
To help decide which airline to fly from Idaho to Australia, see what other customers have to say about Alaska Airlines, Air New Zealand and Hawaiian Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Air New Zealand
8.0
Very good
471 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,405 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Qantas Airways
7.5
Good
829 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
LATAM Airlines
7.5
Good
1,767 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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

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

    One-way options have recently been found by users for as low as $965 on United Airlines. Other airlines that offer cheap prices include Alaska Airlines from $3,739 and Qantas Airways from $6,239 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho 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 Idaho to Australia?

    Currently, March is the cheapest month in which you can book a flight from Idaho to Australia (average of $1,043). Flying from Idaho to Australia in December is currently the most expensive (average of $1,643). 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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Alternative routes for Idaho to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Idaho to Australia

Discover the top 2 airlines that operate flights from Idaho 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$872Average$1,376FlexibilityNo cancel feeOn-time69%
DeltaCheapest$965Average$1,577FlexibilityNo cancel feeOn-timeN/A

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