What is the cheapest airline that flies from Idaho to Australia?

Air New Zealand, United Airlines, and American Airlines are the most popular carriers operating from Idaho to Australia

When did momondo last update prices for flights from Idaho to Australia?

Prices for flights from Idaho to Australia are updated daily.

How many operators does momondo search for flights from Idaho to Australia?

The number of operators available for flights from Idaho to Australia is 3 as of November 2025.

How old do you have to be to fly from Idaho to Australia?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Australia.

What documentation or ID do you need to fly to Australia?

The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$451 Cheap Flights from Idaho to Australia in 2025/26

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Find the cheapest flights from Idaho to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:41 pm - 7:25 amGEG-SYD

19h 44m1 stop

5:45 pm - 10:38 pmSYD-GEG

22h 53m1 stop

$861Multiple Airlines

Find Deal

Tue, Mar 17 - Tue, Mar 24

2:46 pm - 8:30 amGEG-SYD

22h 44m1 stop

10:40 am - 2:06 pmSYD-GEG

22h 26m1 stop

$877Delta

Find Deal

Tue, Dec 2 - Wed, Dec 10

12:24 pm - 9:15 amGEG-SYD

25h 51m1 stop

12:10 pm - 11:45 amSYD-GEG

18h 35m1 stop

$897United Airlines

Find Deal

Wed, Feb 11 - Sat, Feb 21

1:45 pm - 9:15 amGEG-SYD

25h 30m2 stops

10:20 am - 11:24 amSYD-GEG

18h 04m1 stop

$917United Airlines

Find Deal

Mon, Mar 23 - Sun, Apr 19

5:17 am - 6:55 amGEG-SYD

30h 38m1 stop

2:05 pm - 4:40 pmSYD-GEG

21h 35m1 stop

$1,017Qantas Airways

Find Deal

Wed, Dec 3 - Fri, Dec 5

5:41 pm - 4:45 pmGEG-BNE

30h 04m2 stops

8:20 am - 8:34 pmBNE-GEG

29h 14m2 stops

$1,115Qantas Airways

Find Deal

Thu, Mar 19 - Mon, Mar 23

6:01 am - 5:00 amGEG-BNE

29h 59m2 stops

7:40 pm - 12:59 pmBNE-GEG

34h 19m2 stops

$1,159American Airlines

Find Deal

Thu, Mar 19 - Mon, Mar 23

7:00 pm - 8:05 amBOI-SYD

20h 05m1 stop

9:10 am - 12:08 pmSYD-BOI

18h 58m1 stop

$1,175Alaska Airlines

Find Deal

Thu, Apr 2 - Tue, Apr 28

7:00 pm - 7:05 amBOI-SYD

20h 05m1 stop

9:10 am - 12:08 pmSYD-BOI

18h 58m1 stop

$1,183Alaska Airlines

Find Deal

Wed, May 6 - Sun, May 10

2:18 pm - 7:05 amBOI-SYD

24h 47m2 stops

9:10 am - 4:48 pmSYD-BOI

23h 38m2 stops

$1,248American Airlines

Find Deal

Sun, Apr 5 - Thu, Apr 30

Delta flights from Idaho to Australia

Our best Delta deals on Idaho to Australia flight tickets

Delta

Dec 2

GEG2:46 pmSpokane

22h 44m

1 stop

SYD8:30 amSydney Kingsford Smith

Dec 10

SYD10:40 amSydney Kingsford Smith

22h 26m

1 stop

GEG2:06 pmSpokane

$877

Find similar

Delta

Dec 2

GEG9:50 amSpokane

27h 40m

2 stops

SYD8:30 amSydney Kingsford Smith

Dec 9

SYD10:40 amSydney Kingsford Smith

22h 26m

1 stop

GEG2:06 pmSpokane

$881

Find similar

Delta

Dec 6

GEG4:35 pmSpokane

44h 55m

2 stops

SYD8:30 amSydney Kingsford Smith

Dec 10

SYD10:40 amSydney Kingsford Smith

27h 15m

2 stops

GEG6:55 pmSpokane

$894

Find similar

United Airlines flights from Idaho to Australia

Our best United Airlines deals on Idaho to Australia flight tickets

United Airlines

Feb 11

GEG12:24 pmSpokane

25h 51m

1 stop

SYD9:15 amSydney Kingsford Smith

Feb 21

SYD12:10 pmSydney Kingsford Smith

18h 35m

1 stop

GEG11:45 amSpokane

$897

Find similar

United Airlines

Mar 23

GEG1:45 pmSpokane

25h 30m

2 stops

SYD9:15 amSydney Kingsford Smith

Apr 19

SYD10:20 amSydney Kingsford Smith

18h 04m

1 stop

GEG11:24 amSpokane

$917

Find similar

United Airlines

Nov 11

GEG12:45 pmSpokane

24h 45m

1 stop

BNE7:30 amBrisbane

Nov 18

BNE11:40 amBrisbane

17h 02m

1 stop

GEG10:42 amSpokane

$1,036

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/17

5:41 pm-7:25 am

1 stop19h 44m

Sydney Kingsford Smith

Tue 3/24

5:45 pm-10:38 pm

1 stop22h 53m

$861

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 12/2

2:46 pm-8:30 am

1 stop22h 44m

Sydney Kingsford Smith

Wed 12/10

10:40 am-2:06 pm

1 stop22h 26m

$877

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Wed 2/11

12:24 pm-9:15 am

1 stop25h 51m

Sydney Kingsford Smith

Sat 2/21

12:10 pm-11:45 am

1 stop18h 35m

$897

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 3/23

1:45 pm-9:15 am

2 stops25h 30m

Sydney Kingsford Smith

Sun 4/19

10:20 am-11:24 am

1 stop18h 04m

$917

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Wed 12/3

5:17 am-6:55 am

1 stop30h 38m

Sydney Kingsford Smith

Fri 12/5

2:05 pm-4:40 pm

1 stop21h 35m

$1,017

SpokaneBrisbane

GEG - BNE

GEGBNE

Spokane

Thu 3/19

5:41 pm-4:45 pm

2 stops30h 04m

Brisbane

Mon 3/23

8:20 am-8:34 pm

2 stops29h 14m

$1,115

SpokaneBrisbane

GEG - BNE

GEGBNE

Spokane

Thu 3/19

6:01 am-5:00 am

2 stops29h 59m

Brisbane

Mon 3/23

7:40 pm-12:59 pm

2 stops34h 19m

$1,159

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 4/2

7:00 pm-8:05 am

1 stop20h 05m

Sydney Kingsford Smith

Tue 4/28

9:10 am-12:08 pm

1 stop18h 58m

$1,175

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 5/6

7:00 pm-7:05 am

1 stop20h 05m

Sydney Kingsford Smith

Sun 5/10

9:10 am-12:08 pm

1 stop18h 58m

$1,183

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 4/5

2:18 pm-7:05 am

2 stops24h 47m

Sydney Kingsford Smith

Thu 4/30

9:10 am-4:48 pm

2 stops23h 38m

$1,248

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Australia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Australia?

The month of September is, on average, the cheapest month to fly to Australia from Idaho, with most prices found around $963. If you aren’t able to travel during the month of September, then book flights to Australia from Idaho during May instead. Flights to Australia in May, while not as cheap as those in September, still average around $1,035.

What is the cheapest day to depart on your flight to Australia?

The cheapest day to depart from Idaho to Australia is on a Sunday. Travelers who choose to depart for Australia on a Sunday will often find tickets for as low as $1,164. On the other hand, Tuesday is the most expensive day to depart from Idaho because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,529.

What is the cheapest time of day to depart on your flight to Australia?

Flying to Australia from Idaho in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,311 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,539 on average. Flights to Australia from Idaho in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Idaho to Australia flights?

You could potentially save up to 29% on your flight if you consider stops on a Idaho to Australia flight.

Cheap Idaho to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Australia

Direct flights	None

There are no direct flights from Idaho to Australia. There are no popular flight routes from Idaho to Australia.

Search flight deals

When did momondo last update prices for flights from Idaho to Australia?
Prices for flights from Idaho to Australia are updated daily.
How many operators does momondo search for flights from Idaho to Australia?
The number of operators available for flights from Idaho to Australia is 3 as of November 2025.
How old do you have to be to fly from Idaho to Australia?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Australia.
What documentation or ID do you need to fly to Australia?
The travel and health documents you'll need for your trip to Australia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Australia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Idaho to Australia

Compare and see reviews for airlines that fly from Idaho to Australia with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $864	Free Cancellation	Rating 7.2 11,050 reviews		Search American Airlines flights
United Airlines	PriceFrom $872	Free Cancellation	Rating 7.4 9,012 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Australia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Idaho to Australia. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Idaho to Australia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Idaho to Australia flights to just show those with flexible booking policies.

How can momondo help me find flights from Idaho to Australia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Australia from Idaho.

I’m not ready to book a flight from Idaho to Australia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Idaho to Australia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.