$1,162+ Cheap flights from Idaho 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
Apr 27 — May 41
1 adult, Economy
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Find cheap flights from Idaho to Australia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 22, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $1,162 (Alaska Airlines) |
Popular in | December |
Cheapest in | May |
Average price | $1,164 |
Find flight deals from Idaho to Australia
Cheapest flights from Idaho to AustraliaExplore 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 22, 2025.
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 22, 2025.
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Mon 9/15:06 amGEG - SYD
2 stops21h 39mAlaska Airlines
Sat 9/139:40 pmSYD - GEG
2 stops28h 30mAlaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$1,162
This Gurufare deal was found by Cheapflights users on 4/22. 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.
Wed 9/107:09 pmBOI - SYD
2 stops21h 36mAir New Zealand
Fri 9/199:55 amSYD - BOI
2 stops43h 35mAir New Zealand
Deal found 4/22![Air New Zealand logo]()
$1,221
This United Airlines deal was found by Cheapflights users on 4/20. 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 8/3112:35 pmGEG - SYD
1 stop25h 20mUnited Airlines
Tue 12/2311:20 amSYD - GEG
2 stops22h 59mUnited Airlines
Deal found 4/20![United Airlines logo]()
$1,262
This Delta deal was found by Cheapflights users on 4/20. 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.
Sun 8/312:32 pmGEG - SYD
1 stop23h 03mDelta
Tue 12/232:15 pmSYD - GEG
1 stop25h 31mDelta
Deal found 4/20![Delta logo]()
$1,267
This United Airlines deal was found by Cheapflights users on 4/22. 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 6/227:07 pmBOI - SYD
1 stop19h 48mUnited Airlines
Wed 7/210:20 amSYD - BOI
1 stop22h 20mUnited Airlines
Deal found 4/22![United Airlines logo]()
$1,357
This Expedia deal was found by Cheapflights users on 4/21. 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 5/217:10 amGEG - SYD
2 stops35h 35mMultiple Airlines
Wed 5/281:15 pmSYD - GEG
2 stops26h 07mMultiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,361
This Delta deal was found by Cheapflights users on 4/22. 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.
Sun 6/223:43 pmBOI - SYD
1 stop22h 52mDelta
Mon 6/309:25 amSYD - BOI
1 stop27h 36mDelta
Deal found 4/22![Delta logo]()
$1,367
This American Airlines deal was found by Cheapflights users on 4/22. 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 9/101:41 pmBOI - SYD
1 stop25h 14mAmerican Airlines
Fri 9/1912:10 pmSYD - BOI
1 stop25h 04mAmerican Airlines
Deal found 4/22![American Airlines logo]()
$1,373
This United Airlines deal was found by Cheapflights users on 4/21. 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 6/43:29 pmGEG - BNE
1 stop22h 01mUnited Airlines
Wed 6/1110:30 amBNE - GEG
1 stop21h 17mUnited Airlines
Deal found 4/21![United Airlines logo]()
$1,404
This Gurufare deal was found by Cheapflights users on 4/21. 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.
Wed 5/211:22 pmGEG - SYD
1 stop24h 33mQantas Airways
Wed 5/285:45 pmSYD - GEG
1 stop21h 37mQantas Airways
Deal found 4/21![Qantas Airways logo]()
$1,405
This Expedia deal was found by Cheapflights users on 4/21. 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.
Tue 6/246:51 pmBOI - SYD
2 stops24h 54mMultiple Airlines
Sun 6/291:15 pmSYD - BOI
2 stops25h 39mMultiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,468
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 6/257:00 amBOI - SYD
2 stops20h 45mAlaska Airlines
Sun 6/299:40 pmSYD - BOI
1 stop29h 05mAlaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$1,759
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 22, 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 9/1
5:06 am-7:45 pm
2 stops21h 39m
Sydney Kingsford Smith
Sat 9/13
9:40 pm-9:10 am
2 stops28h 30m
$1,162
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 9/10
7:09 pm-8:45 am
2 stops21h 36m
Sydney Kingsford Smith
Fri 9/19
9:55 am-1:30 pm
2 stops43h 35m
$1,221
SpokaneSydney
GEG - SYD
GEGSYD
Spokane
Sun 8/31
12:35 pm-6:55 am
1 stop25h 20m
Sydney Kingsford Smith
Tue 12/23
11:20 am-3:19 pm
2 stops22h 59m
$1,262
SpokaneSydney
GEG - SYD
GEGSYD
Spokane
Sun 8/31
2:32 pm-6:35 am
1 stop23h 03m
Sydney Kingsford Smith
Tue 12/23
2:15 pm-8:46 pm
1 stop25h 31m
$1,267
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Sun 6/22
7:07 pm-6:55 am
1 stop19h 48m
Sydney Kingsford Smith
Wed 7/2
10:20 am-4:40 pm
1 stop22h 20m
$1,357
SpokaneSydney
GEG - SYD
GEGSYD
Spokane
Wed 5/21
7:10 am-11:45 am
2 stops35h 35m
Sydney Kingsford Smith
Wed 5/28
1:15 pm-10:22 pm
2 stops26h 07m
$1,361
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Sun 6/22
3:43 pm-6:35 am
1 stop22h 52m
Sydney Kingsford Smith
Mon 6/30
9:25 am-9:01 pm
1 stop27h 36m
$1,367
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 9/10
1:41 pm-6:55 am
1 stop25h 14m
Sydney Kingsford Smith
Fri 9/19
12:10 pm-9:14 pm
1 stop25h 04m
$1,373
SpokaneBrisbane
GEG - BNE
GEGBNE
Spokane
Wed 6/4
3:29 pm-6:30 am
1 stop22h 01m
Brisbane
Wed 6/11
10:30 am-2:47 pm
1 stop21h 17m
$1,404
SpokaneSydney
GEG - SYD
GEGSYD
Spokane
Wed 5/21
1:22 pm-6:55 am
1 stop24h 33m
Sydney Kingsford Smith
Wed 5/28
5:45 pm-10:22 pm
1 stop21h 37m
$1,405
Showing 1-10 of 20 results
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, February is the cheapest month in which you can book a flight from Idaho to Australia (average of $1,046). 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 22, 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 22, 2025.
To help decide which airline to fly from Idaho to Australia, see what other customers have to say about Air Tahiti Nui, ANA and Alaska 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.
Entertainment
7.3
Crew
9.1
Food
7.8
Boarding
8.7
Comfort
8.1
Overall
8.8
Reviews
1 / 2
10.0
ExcellentIsabelle,Apr 2023
AKL - PPT
Entertainment
7.3
Crew
9.1
Food
7.8
Boarding
8.7
Comfort
8.1
Overall
8.8
Reviews
1 / 2
10.0
ExcellentIsabelle,Apr 2023
AKL - PPT
Entertainment
7.3
Crew
9.1
Food
7.8
Boarding
8.7
Comfort
8.1
Overall
8.8
Reviews
1 / 2
10.0
ExcellentIsabelle,Apr 2023
AKL - PPT
Entertainment
7.3
Crew
9.1
Food
7.8
Boarding
8.7
Comfort
8.1
Overall
8.8
Reviews
1 / 2
10.0
ExcellentIsabelle,Apr 2023
AKL - PPT
Entertainment
7.3
Crew
9.1
Food
7.8
Boarding
8.7
Comfort
8.1
Overall
8.8
Reviews
1 / 2
10.0
ExcellentIsabelle,Apr 2023
AKL - PPT
Entertainment
7.3
Crew
9.1
Food
7.8
Boarding
8.7
Comfort
8.1
Overall
8.8
Reviews
1 / 2
10.0
ExcellentIsabelle,Apr 2023
AKL - PPT
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.
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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.
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 22, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$872 | Average$1,368 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$965 | Average$1,641 | FlexibilityNo cancel fee | On-timeN/A |