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Idaho

$1,027+ Cheap flights from Australia to Idaho

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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BOI
Apr 20 — Apr 271
Mon 4/20
Mon 4/27
1 adult, Economy
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Cheap flight deals from Australia to Idaho

Cheapest flights from Australia to Idaho
Explore the most affordable flight options available from Australia to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2026.

This American Airlines deal was found by Cheapflights users on 3/19. 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 10/212:35 pm
MEL
-
GEG
1 stop24h 12m
American Airlines
Sun 10/253:44 pm
GEG
-
MEL
2 stops47h 46m
American Airlines
Deal found 3/19$1,027
This Trip.com deal was found by Cheapflights users on 3/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
SYD
-
BOI
2 stops33h 01m
Multiple Airlines
Thu 5/78:11 am
BOI
-
SYD
2 stops45h 59m
Multiple Airlines
Deal found 3/16$1,064
This American Airlines deal was found by Cheapflights users on 3/16. 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 4/3012:00 pm
SYD
-
BOI
1 stop40h 51m
American Airlines
Thu 5/76:26 pm
BOI
-
SYD
2 stops20h 39m
American Airlines
Deal found 3/16$1,077
This American Airlines deal was found by Cheapflights users on 3/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:10 am
SYD
-
BOI
2 stops29h 07m
American Airlines
Mon 8/315:14 pm
BOI
-
SYD
2 stops45h 51m
American Airlines
Deal found 3/20$1,084
This American Airlines deal was found by Cheapflights users on 3/19. 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 10/291:10 pm
BNE
-
BOI
2 stops26h 22m
American Airlines
Mon 11/25:25 pm
BOI
-
BNE
2 stops43h 25m
American Airlines
Deal found 3/19$1,098
This oojo deal was found by Cheapflights users on 3/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/175:50 pm
SYD
-
BOI
1 stop21h 12m
Multiple Airlines
Fri 4/247:14 pm
BOI
-
SYD
1 stop20h 16m
Multiple Airlines
Deal found 3/20$1,198
This Delta deal was found by Cheapflights users on 3/20. 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.
Fri 4/179:15 am
SYD
-
BOI
2 stops24h 07m
Delta
Fri 4/248:30 am
BOI
-
SYD
2 stops30h 20m
Delta
Deal found 3/20$1,205
This American Airlines deal was found by Cheapflights users on 3/19. 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.
Fri 4/175:50 pm
SYD
-
BOI
2 stops21h 51m
American Airlines
Fri 4/242:14 pm
BOI
-
SYD
2 stops24h 51m
American Airlines
Deal found 3/19$1,214
This BYOjet deal was found by Cheapflights users on 3/17. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:45 pm
BNE
-
BOI
3 stops36h 28m
Multiple Airlines
Wed 6/176:51 pm
BOI
-
BNE
1 stop18h 09m
Multiple Airlines
Deal found 3/17$1,420
This Air Canada deal was found by Cheapflights users on 3/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:20 am
SYD
-
BOI
2 stops23h 28m
Air Canada
Sun 4/265:29 pm
BOI
-
SYD
2 stops45h 51m
Air Canada
Deal found 3/19$1,435
This United Airlines deal was found by Cheapflights users on 3/19. 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 10/2910:40 am
BNE
-
BOI
1 stop26h 35m
United Airlines
Mon 11/25:22 pm
BOI
-
BNE
2 stops45h 13m
United Airlines
Deal found 3/19$1,570
This United Airlines deal was found by Cheapflights users on 3/16. 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 3/1912:00 pm
MEL
-
GEG
1 stop27h 03m
United Airlines
Mon 3/235:00 am
GEG
-
MEL
2 stops33h 30m
United Airlines
Deal found 3/16$1,829

Find flight deals from Australia to Idaho

Keep the following information in mind while searching for Australia to Idaho flight deals. Data was last updated March 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,064
(Trip.com)
Provider with most accurate pricing for Sydney Kingsford Smith-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Boise Air Term. Gowen Fld flights.
Search Deals
From Australia to Idaho
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Australia to Idaho 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 21, 2026.
Use the filters below to find and compare flights from Australia to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 8/27

9:10 am-10:17 pm

2 stops29h 07m

Boise Air Term. Gowen Fld

Mon 8/31

5:14 pm-7:05 am

2 stops45h 51m

$1,084

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 4/30

12:00 pm-10:54 pm

1 stop26h 54m

Boise Air Term. Gowen Fld

Thu 5/7

1:41 pm-6:55 am

1 stop25h 14m

$1,085

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Fri 4/17

9:15 am-5:22 pm

2 stops24h 07m

Boise Air Term. Gowen Fld

Fri 4/24

8:30 am-6:50 am

2 stops30h 20m

$1,205

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Fri 4/17

5:50 pm-11:02 pm

1 stop21h 12m

Boise Air Term. Gowen Fld

Fri 4/24

7:20 pm-7:30 am

2 stops44h 10m

$1,307

BrisbaneBoise

BNE - BOI

BNEBOI

Brisbane

Mon 6/1

8:45 pm-5:13 pm

3 stops36h 28m

Boise Air Term. Gowen Fld

Wed 6/17

1:29 pm-5:00 am

2 stops23h 31m

$1,420

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 4/23

9:20 am-4:48 pm

2 stops23h 28m

Boise Air Term. Gowen Fld

Sun 4/26

5:29 pm-7:20 am

2 stops45h 51m

$1,435

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Mon 4/13

8:15 pm-12:51 pm

2 stops32h 36m

Boise Air Term. Gowen Fld

Thu 4/30

6:26 pm-7:05 am

2 stops20h 39m

$1,553

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Mon 4/13

8:45 pm-11:02 pm

2 stops42h 17m

Boise Air Term. Gowen Fld

Thu 4/30

7:14 pm-7:30 am

1 stop20h 16m

$1,704
Quickest round-trip

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Mon 4/13

5:30 pm-11:02 pm

2 stops21h 32m

Boise Air Term. Gowen Fld

Sun 4/26

7:14 pm-7:05 am

1 stop19h 51m

$1,792

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Sorted by cheapest first

Best time to book a flight from Australia to Idaho

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

    Airlines like American Airlines and Delta fly from Australia to Idaho in about 24h 07m. The time it takes to get you to your destination can typically vary by up to 5h. The distance from Australia to Idaho is about 7894 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Australia to Idaho 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

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