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Idaho

$949+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BOI
Jul 27 — Aug 31
Mon 7/27
Mon 8/3
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 June 27, 2026.

This United Airlines deal was found by Cheapflights users on 6/26. 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 8/2510:55 am
MEL
-
GEG
2 stops26h 51m
United Airlines
Sat 9/55:00 am
GEG
-
MEL
2 stops34h 15m
United Airlines
Deal found 6/26$949
This American Airlines deal was found by Cheapflights users on 6/24. 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 11/52:05 pm
SYD
-
BOI
1 stop25h 58m
American Airlines
Mon 11/91:29 pm
BOI
-
SYD
2 stops49h 31m
American Airlines
Deal found 6/24$998
This American Airlines deal was found by Cheapflights users on 6/24. 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 11/129:40 am
BNE
-
BOI
2 stops30h 57m
American Airlines
Mon 11/161:29 pm
BOI
-
BNE
1 stop24h 01m
American Airlines
Deal found 6/24$1,011
This American Airlines deal was found by Cheapflights users on 6/22. 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 11/1111:15 am
SYD
-
BOI
2 stops44h 20m
American Airlines
Sun 11/151:29 pm
BOI
-
SYD
2 stops49h 31m
American Airlines
Deal found 6/22$1,015
This United Airlines deal was found by Cheapflights users on 6/24. 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 11/511:50 am
SYD
-
BOI
1 stop17h 24m
United Airlines
Mon 11/96:59 pm
BOI
-
SYD
1 stop20h 21m
United Airlines
Deal found 6/24$1,018
This Qantas Airways deal was found by Cheapflights users on 6/23. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/511:15 am
SYD
-
BOI
1 stop20h 25m
Qantas Airways
Mon 11/95:57 pm
BOI
-
SYD
1 stop21h 03m
Qantas Airways
Deal found 6/23$1,051
This Delta deal was found by Cheapflights users on 6/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:00 am
MEL
-
GEG
2 stops24h 00m
Delta
Sun 8/167:54 pm
GEG
-
MEL
2 stops42h 56m
Delta
Deal found 6/25$1,056
This oojo deal was found by Cheapflights users on 6/26. 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.
Tue 8/259:45 am
MEL
-
GEG
1 stop29h 53m
Qantas Airways
Sat 9/512:44 pm
GEG
-
MEL
1 stop23h 16m
Qantas Airways
Deal found 6/26$1,057
This Delta deal was found by Cheapflights users on 6/23. 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 7/2210:00 am
MEL
-
GEG
1 stop22h 35m
Delta
Wed 7/295:25 am
GEG
-
MEL
2 stops33h 25m
Delta
Deal found 6/23$1,062
This Trip.com deal was found by Cheapflights users on 6/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/91:30 pm
MEL
-
GEG
2 stops25h 45m
Multiple Airlines
Sun 8/165:00 am
GEG
-
MEL
3 stops38h 25m
Multiple Airlines
Deal found 6/25$1,073
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:55 am
MEL
-
GEG
2 stops66h 29m
United Airlines
Thu 10/86:00 am
GEG
-
MEL
1 stop33h 15m
United Airlines
Deal found 6/25$1,074
This Jetabroad deal was found by Cheapflights users on 6/25. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:40 am
BNE
-
BOI
2 stops25h 44m
Air New Zealand
Wed 9/237:05 pm
BOI
-
BNE
2 stops24h 00m
Air New Zealand
Deal found 6/25$1,136

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 June 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$949
(United Airlines)
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 June 27, 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

MelbourneSpokane

MEL - GEG

MELGEG

Melbourne

Tue 8/25

10:55 am-8:46 pm

2 stops26h 51m

Spokane

Sat 9/5

5:00 am-8:15 am

2 stops34h 15m

$949

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 11/5

11:15 am-12:38 pm

2 stops43h 23m

Boise Air Term. Gowen Fld

Mon 11/9

5:25 pm-9:00 am

2 stops21h 35m

$1,006

BrisbaneBoise

BNE - BOI

BNEBOI

Brisbane

Thu 11/12

9:40 am-11:37 pm

2 stops30h 57m

Boise Air Term. Gowen Fld

Mon 11/16

7:00 am-5:50 am

2 stops29h 50m

$1,012

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Wed 11/11

11:15 am-1:35 pm

2 stops44h 20m

Boise Air Term. Gowen Fld

Sun 11/15

1:29 pm-9:00 am

2 stops49h 31m

$1,015
Quickest round-trip

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 11/5

11:50 am-11:14 am

1 stop17h 24m

Boise Air Term. Gowen Fld

Mon 11/9

6:59 pm-9:20 am

1 stop20h 21m

$1,018

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 11/5

11:15 am-1:40 pm

1 stop20h 25m

Boise Air Term. Gowen Fld

Mon 11/9

5:57 pm-9:00 am

1 stop21h 03m

$1,051

MelbourneSpokane

MEL - GEG

MELGEG

Melbourne

Sun 8/9

10:00 am-5:00 pm

2 stops24h 00m

Spokane

Sun 8/16

7:54 pm-7:50 am

2 stops42h 56m

$1,056

MelbourneSpokane

MEL - GEG

MELGEG

Melbourne

Wed 7/22

10:00 am-12:02 am

1 stop31h 02m

Spokane

Wed 7/29

4:16 pm-7:50 am

1 stop22h 34m

$1,062

MelbourneSpokane

MEL - GEG

MELGEG

Melbourne

Thu 9/17

10:55 am-12:24 pm

2 stops66h 29m

Spokane

Thu 10/8

6:00 am-9:15 am

1 stop33h 15m

$1,074

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Wed 11/11

11:50 am-11:14 am

1 stop17h 24m

Boise Air Term. Gowen Fld

Sun 11/15

11:51 am-9:20 am

1 stop27h 29m

$1,131

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 13 resultsSorted by cheapest first
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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

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

Currently, January is the cheapest month in which you can book a flight from Australia to Idaho (average of $833). Flying from Australia to Idaho in September is currently the most expensive (average of $1,873). 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.

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 United Airlines, American Airlines, and Delta fly from Australia to Idaho in about 22h 36m. The time it takes to get you to your destination can typically vary by up to 20h 47m. The distance from Australia to Idaho is about 8388 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.

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

    Currently, January is the cheapest month in which you can book a flight from Australia to Idaho (average of $833). Flying from Australia to Idaho in September is currently the most expensive (average of $1,873). 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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