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$513+ 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
Mar 31 — Apr 71
Tue 3/31
Tue 4/7
1 adult, Economy
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Cheap 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 March 1, 2026.

This oojo deal was found by Cheapflights users on 2/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
GEG
-
SYD
1 stop28h 25m
Multiple Airlines
Wed 11/1811:15 am
SYD
-
GEG
1 stop25h 06m
Multiple Airlines
Deal found 2/28$959
This oojo deal was found by Cheapflights users on 2/25. 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.
Sat 4/117:15 am
GEG
-
SYD
1 stop30h 50m
Multiple Airlines
Sat 4/185:50 pm
SYD
-
GEG
1 stop22h 02m
Multiple Airlines
Deal found 2/25$966
This oojo deal was found by Cheapflights users on 2/27. 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.
Fri 2/273:45 pm
GEG
-
SYD
1 stop19h 25m
Multiple Airlines
Sun 3/89:25 pm
SYD
-
GEG
1 stop33h 37m
Multiple Airlines
Deal found 2/27$967
This oojo deal was found by Cheapflights users on 2/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
GEG
-
SYD
1 stop28h 25m
Multiple Airlines
Sat 11/2111:15 am
SYD
-
GEG
1 stop30h 10m
Multiple Airlines
Deal found 2/28$968
This oojo deal was found by Cheapflights users on 2/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:45 pm
GEG
-
SYD
1 stop19h 25m
Multiple Airlines
Tue 3/101:05 pm
SYD
-
GEG
1 stop21h 49m
Multiple Airlines
Deal found 2/28$969
This United Airlines deal was found by Cheapflights users on 2/26. 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 3/312:38 pm
GEG
-
SYD
1 stop25h 37m
United Airlines
Tue 3/1012:10 pm
SYD
-
GEG
1 stop26h 53m
United Airlines
Deal found 2/26$978
This United Airlines deal was found by Cheapflights users on 2/28. 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.
Sun 3/812:42 pm
GEG
-
SYD
1 stop26h 33m
United Airlines
Sun 3/1512:10 pm
SYD
-
GEG
1 stop26h 53m
United Airlines
Deal found 2/28$979
This United Airlines deal was found by Cheapflights users on 2/28. 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.
Sat 3/71:37 pm
GEG
-
SYD
2 stops24h 28m
United Airlines
Tue 3/172:00 pm
SYD
-
GEG
1 stop25h 03m
United Airlines
Deal found 2/28$984
This United Airlines deal was found by Cheapflights users on 2/26. 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 3/76:00 am
GEG
-
SYD
1 stop32h 15m
United Airlines
Tue 3/1012:10 pm
SYD
-
GEG
1 stop17h 33m
United Airlines
Deal found 2/26$985
This Delta deal was found by Cheapflights users on 2/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/126:25 am
GEG
-
SYD
1 stop29h 40m
Delta
Wed 3/189:40 am
SYD
-
GEG
1 stop29h 40m
Delta
Deal found 2/28$987
This Gurufare deal was found by Cheapflights users on 2/27. 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.
Tue 3/36:00 am
GEG
-
BNE
1 stop30h 30m
Qantas Airways
Tue 3/108:40 am
BNE
-
GEG
1 stop25h 14m
Qantas Airways
Deal found 2/27$1,021
This oojo deal was found by Cheapflights users on 2/26. 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.
Mon 4/207:05 pm
BOI
-
SYD
1 stop20h 00m
Multiple Airlines
Sun 4/265:50 pm
SYD
-
BOI
1 stop34h 44m
Multiple Airlines
Deal found 2/26$1,052

Find flight deals from Idaho to Australia

Keep the following information in mind while searching for Idaho to Australia flight deals. Data was last updated March 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$966
(oojo)

One-way from

$513
(Gurufare)

Popular in

December

Cheapest in

October

Average price

$1,136
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Sydney Kingsford Smith flights.
Search Deals
From Idaho to Australia
Search Deals
One-way flight from Idaho to Australia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($115 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 1, 2026.
Use the filters below to find and compare flights from Idaho to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 4/11

7:15 am-7:05 am

1 stop30h 50m

Sydney Kingsford Smith

Sat 4/18

5:50 pm-10:52 pm

1 stop22h 02m

$966

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 4/3

5:05 am-8:00 am

2 stops32h 55m

Sydney Kingsford Smith

Wed 4/8

9:30 am-9:11 pm

2 stops28h 41m

$983

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 4/7

7:15 am-6:50 am

2 stops30h 35m

Sydney Kingsford Smith

Fri 4/10

9:15 am-12:45 pm

2 stops20h 30m

$984

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 3/13

5:00 am-8:05 am

2 stops33h 05m

Sydney Kingsford Smith

Wed 3/18

12:10 pm-11:43 am

1 stop17h 33m

$984

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 3/13

5:00 am-8:05 am

2 stops33h 05m

Sydney Kingsford Smith

Mon 3/16

12:10 pm-11:43 am

1 stop17h 33m

$984

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 4/11

1:46 pm-6:55 am

2 stops24h 09m

Sydney Kingsford Smith

Sat 4/18

9:30 am-3:15 pm

2 stops22h 45m

$995

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 3/12

6:37 pm-7:00 am

2 stops42h 23m

Sydney Kingsford Smith

Wed 3/18

12:10 pm-11:43 am

1 stop17h 33m

$997

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Mon 6/1

2:07 pm-7:05 am

2 stops24h 58m

Sydney Kingsford Smith

Mon 6/15

9:10 am-5:09 pm

2 stops23h 59m

$1,053

SpokaneBrisbane

GEG - BNE

GEGBNE

Spokane

Sun 4/26

12:35 pm-6:30 am

1 stop24h 55m

Brisbane

Sun 5/3

10:30 am-11:16 am

1 stop17h 46m

$1,065

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Mon 5/25

3:23 pm-6:50 am

1 stop23h 27m

Sydney Kingsford Smith

Wed 6/10

9:15 am-3:01 pm

1 stop21h 46m

$1,066

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/28

Showing 1-10 of 33 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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.

  • How long is the flight from Idaho to Australia?

    There are many flights that can get you from Idaho to Australia in 24h 58m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. The distance from Idaho to Australia is about 7894 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 March 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$966Average$1,383FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$967Average$1,190FlexibilityNo cancel feeOn-time71%

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