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

United Airlines, Air Tahiti Nui, and Qantas Airways 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 September 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.

$427 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

12:33 pm - 9:15 amGEG-SYD

25h 42m1 stop

11:20 am - 9:18 pmSYD-GEG

28h 58m2 stops

$866United Airlines

Find Deal

Thu, Dec 4 - Thu, Dec 25

12:45 pm - 9:15 amGEG-SYD

26h 30m1 stop

12:10 pm - 10:42 amSYD-GEG

17h 32m1 stop

$879United Airlines

Find Deal

Thu, Oct 30 - Sat, Nov 8

2:38 pm - 5:40 pmGEG-SYD

32h 02m3 stops

1:55 pm - 11:29 pmSYD-GEG

28h 34m2 stops

$941Multiple Airlines

Find Deal

Sun, Nov 2 - Sun, Nov 9

10:05 am - 9:00 amBOI-SYD

28h 55m2 stops

11:20 am - 6:02 pmSYD-BOI

24h 42m2 stops

$1,001Multiple Airlines

Find Deal

Wed, Nov 5 - Wed, Nov 12

7:35 am - 7:45 pmGEG-SYD

41h 10m2 stops

9:40 pm - 12:26 pmSYD-GEG

33h 46m2 stops

$1,011Alaska Airlines

Find Deal

Wed, Nov 5 - Tue, Nov 11

8:59 pm - 7:45 pmGEG-SYD

27h 46m2 stops

9:40 pm - 4:21 pmSYD-GEG

37h 41m2 stops

$1,015Alaska Airlines

Find Deal

Sun, Nov 2 - Fri, Nov 7

5:38 pm - 7:45 pmBOI-SYD

33h 07m2 stops

9:40 pm - 12:36 pmSYD-BOI

31h 56m2 stops

$1,028Hawaiian Airlines

Find Deal

Wed, Oct 22 - Sun, Oct 26

2:46 pm - 8:30 amGEG-SYD

22h 44m1 stop

2:15 pm - 2:07 pmSYD-GEG

18h 52m1 stop

$1,030Delta

Find Deal

Thu, Dec 4 - Sat, Dec 20

5:30 am - 7:45 pmBOI-SYD

21h 15m2 stops

9:40 pm - 1:47 pmSYD-BOI

33h 07m2 stops

$1,161Hawaiian Airlines

Find Deal

Wed, Mar 11 - Tue, Mar 24

2:08 pm - 6:50 amBOI-SYD

22h 42m1 stop

10:40 am - 6:25 pmSYD-BOI

25h 45m2 stops

$1,297Delta

Find Deal

Tue, Dec 30 - Sun, Feb 15

United Airlines flights from Idaho to Australia

Our best United Airlines deals on Idaho to Australia flight tickets

United Airlines

Dec 4

GEG12:33 pmSpokane

25h 42m

1 stop

SYD9:15 amSydney Kingsford Smith

Dec 25

SYD11:20 amSydney Kingsford Smith

28h 58m

2 stops

GEG9:18 pmSpokane

$866

Find similar

United Airlines

Oct 30

GEG12:45 pmSpokane

26h 30m

1 stop

SYD9:15 amSydney Kingsford Smith

Nov 8

SYD12:10 pmSydney Kingsford Smith

17h 32m

1 stop

GEG10:42 amSpokane

$879

Find similar

United Airlines

Oct 30

GEG5:10 amSpokane

34h 05m

2 stops

SYD9:15 amSydney Kingsford Smith

Nov 6

SYD12:10 pmSydney Kingsford Smith

17h 32m

1 stop

GEG10:42 amSpokane

$883

Find similar

Alaska Airlines flights from Idaho to Australia

Our best Alaska Airlines deals on Idaho to Australia flight tickets

Alaska Airlines

Nov 5

GEG7:35 amSpokane

41h 10m

2 stops

SYD7:45 pmSydney Kingsford Smith

Nov 11

SYD9:40 pmSydney Kingsford Smith

33h 46m

2 stops

GEG12:26 pmSpokane

$1,011

Find similar

Alaska Airlines

Nov 2

GEG8:59 pmSpokane

27h 46m

2 stops

SYD7:45 pmSydney Kingsford Smith

Nov 7

SYD9:40 pmSydney Kingsford Smith

37h 41m

2 stops

GEG4:21 pmSpokane

$1,015

Find similar

Alaska Airlines

Nov 5

GEG1:20 pmSpokane

35h 25m

2 stops

SYD7:45 pmSydney Kingsford Smith

Nov 9

SYD9:40 pmSydney Kingsford Smith

33h 46m

2 stops

GEG12:26 pmSpokane

$1,039

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 12/4

12:33 pm-9:15 am

1 stop25h 42m

Sydney Kingsford Smith

Thu 12/25

11:20 am-9:18 pm

2 stops28h 58m

$866

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 10/30

12:45 pm-9:15 am

1 stop26h 30m

Sydney Kingsford Smith

Sat 11/8

12:10 pm-10:42 am

1 stop17h 32m

$879

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sun 11/2

2:38 pm-5:40 pm

3 stops32h 02m

Sydney Kingsford Smith

Sun 11/9

1:55 pm-11:29 pm

2 stops28h 34m

$941

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 11/5

10:05 am-9:00 am

2 stops28h 55m

Sydney Kingsford Smith

Wed 11/12

11:20 am-6:02 pm

2 stops24h 42m

$1,001

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Wed 11/5

7:35 am-7:45 pm

2 stops41h 10m

Sydney Kingsford Smith

Tue 11/11

9:40 pm-12:26 pm

2 stops33h 46m

$1,011

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sun 11/2

8:59 pm-7:45 pm

2 stops27h 46m

Sydney Kingsford Smith

Fri 11/7

9:40 pm-4:21 pm

2 stops37h 41m

$1,015

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 10/22

5:38 pm-7:45 pm

2 stops33h 07m

Sydney Kingsford Smith

Sun 10/26

9:40 pm-12:36 pm

2 stops31h 56m

$1,028

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 12/4

2:46 pm-8:30 am

1 stop22h 44m

Sydney Kingsford Smith

Sat 12/20

2:15 pm-2:07 pm

1 stop18h 52m

$1,030

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 3/11

5:30 am-7:45 pm

2 stops21h 15m

Sydney Kingsford Smith

Tue 3/24

9:40 pm-1:47 pm

2 stops33h 07m

$1,161

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Tue 12/30

2:08 pm-6:50 am

1 stop22h 42m

Sydney Kingsford Smith

Sun 2/15

10:40 am-6:25 pm

2 stops25h 45m

$1,297

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 $967. 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 $1,010.

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.

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 September 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
United Airlines	PriceFrom $872	Free Cancellation	Rating 7.4 8,922 reviews		Search United Airlines flights
American Airlines	PriceFrom $987	Free Cancellation	Rating 7.2 10,000 reviews		Search American 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.