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

United Airlines is the most popular carrier 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 2 as of August 2026.

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.

$565 Cheap Flights from Idaho to Australia in 2026

Discover deals from 900+ travel sites with momondo.

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.

3:37 pm - 8:05 amGEG Spokane-SYD Sydney Kingsford Smith

22h 28m2 stops Portland Los Angeles Los Angeles

9:25 pm - 3:22 pmSYD Sydney Kingsford Smith-GEG Spokane

35h 57m1 stop San Francisco

$1,063Multiple Airlines

Sun, Oct 18 - Wed, Oct 28

1:36 pm - 7:30 amGEG Spokane-SYD Sydney Kingsford Smith

24h 54m2 stops Seattle/Tacoma Intl Los Angeles Los Angeles

9:10 am - 1:23 pmSYD Sydney Kingsford Smith-GEG Spokane

21h 13m1 stop Los Angeles Los Angeles

$1,063Multiple Airlines

Wed, Sep 16 - Wed, Sep 23

3:37 pm - 6:25 amGEG Spokane-SYD Sydney Kingsford Smith

44h 48m2 stops Portland Los Angeles Los Angeles

11:15 am - 12:35 pmSYD Sydney Kingsford Smith-GEG Spokane

20h 20m1 stop Los Angeles Los Angeles

$1,064Multiple Airlines

Sat, Oct 24 - Tue, Nov 17

4:21 pm - 7:05 amGEG Spokane-SYD Sydney Kingsford Smith

21h 44m1 stop Los Angeles Los Angeles

9:10 am - 1:23 pmSYD Sydney Kingsford Smith-GEG Spokane

21h 13m1 stop Los Angeles Los Angeles

$1,069Multiple Airlines

Wed, Sep 16 - Wed, Sep 23

2:51 pm - 8:05 amGEG Spokane-SYD Sydney Kingsford Smith

23h 14m1 stop Los Angeles Los Angeles

9:25 pm - 3:22 pmSYD Sydney Kingsford Smith-GEG Spokane

35h 57m1 stop San Francisco

$1,070Multiple Airlines

Sun, Oct 18 - Wed, Oct 28

7:02 am - 6:20 amGEG Spokane-SYD Sydney Kingsford Smith

28h 18m1 stop San Francisco

11:50 am - 11:24 amSYD Sydney Kingsford Smith-GEG Spokane

18h 34m1 stop San Francisco

$1,090United Airlines

Wed, Dec 2 - Wed, Dec 16

7:02 am - 6:20 amGEG Spokane-SYD Sydney Kingsford Smith

28h 18m1 stop San Francisco

11:50 am - 11:24 amSYD Sydney Kingsford Smith-GEG Spokane

18h 34m1 stop San Francisco

$1,090United Airlines

Wed, Dec 2 - Tue, Dec 15

4:24 pm - 7:30 amGEG Spokane-SYD Sydney Kingsford Smith

21h 06m1 stop Los Angeles Los Angeles

10:40 am - 3:48 pmSYD Sydney Kingsford Smith-GEG Spokane

24h 08m1 stop Los Angeles Los Angeles

$1,090Delta

Mon, Oct 26 - Wed, Nov 18

4:24 pm - 7:30 amGEG Spokane-SYD Sydney Kingsford Smith

21h 06m1 stop Los Angeles Los Angeles

10:40 am - 3:48 pmSYD Sydney Kingsford Smith-GEG Spokane

24h 08m1 stop Los Angeles Los Angeles

$1,090Delta

Mon, Oct 26 - Sun, Nov 15

4:24 pm - 7:50 amGEG Spokane-SYD Sydney Kingsford Smith

21h 26m1 stop Los Angeles Los Angeles

9:40 am - 3:44 pmSYD Sydney Kingsford Smith-GEG Spokane

24h 04m1 stop Los Angeles Los Angeles

$1,090Delta

Tue, Oct 20 - Tue, Oct 27

Cheap last minute flights

Enter your travel dates to find the best prices.

3:16 pm - 7:05 amGEG Spokane-SYD Sydney Kingsford Smith

22h 49m2 stops Portland Los Angeles Los Angeles

9:10 am - 10:38 pmSYD Sydney Kingsford Smith-GEG Spokane

30h 28m1 stop Los Angeles Los Angeles

$1,112Multiple Airlines

Sat, Aug 15 - Sat, Aug 22

6:20 am - 7:05 amGEG Spokane-SYD Sydney Kingsford Smith

31h 45m1 stop Los Angeles Los Angeles

9:10 am - 10:38 pmSYD Sydney Kingsford Smith-GEG Spokane

30h 28m1 stop Los Angeles Los Angeles

$1,120Multiple Airlines

Sat, Aug 15 - Sat, Aug 22

11:51 am - 7:05 amGEG Spokane-SYD Sydney Kingsford Smith

26h 14m1 stop Los Angeles Los Angeles

5:50 pm - 10:15 pmSYD Sydney Kingsford Smith-GEG Spokane

21h 25m1 stop Los Angeles Los Angeles

$1,201Multiple Airlines

Wed, Aug 12 - Fri, Aug 14

5:20 am - 7:05 amGEG Spokane-SYD Sydney Kingsford Smith

32h 45m2 stops Phoenix Sky Harbor Intl Los Angeles Los Angeles

5:50 pm - 10:15 pmSYD Sydney Kingsford Smith-GEG Spokane

21h 25m1 stop Los Angeles Los Angeles

$1,201Multiple Airlines

Wed, Aug 12 - Fri, Aug 14

3:16 pm - 7:30 amGEG Spokane-SYD Sydney Kingsford Smith

23h 14m2 stops Portland Los Angeles Los Angeles

6:25 am - 10:38 pmSYD Sydney Kingsford Smith-GEG Spokane

33h 13m2 stops Melbourne Los Angeles Los Angeles

$1,204Multiple Airlines

Sat, Aug 15 - Sat, Aug 22

5:20 am - 7:05 amGEG Spokane-SYD Sydney Kingsford Smith

32h 45m2 stops Phoenix Sky Harbor Intl Los Angeles Los Angeles

6:45 pm - 10:15 pmSYD Sydney Kingsford Smith-GEG Spokane

44h 30m2 stops Melbourne Los Angeles Los Angeles

$1,309Multiple Airlines

Wed, Aug 12 - Fri, Aug 14

5:57 am - 7:30 amBOI Boise Air Term. Gowen Fld-SYD Sydney Kingsford Smith

33h 33m2 stops Portland Los Angeles Los Angeles

5:50 pm - 11:48 pmSYD Sydney Kingsford Smith-BOI Boise Air Term. Gowen Fld

45h 58m2 stops Los Angeles Los Angeles Portland

$1,640Alaska Airlines

Fri, Aug 14 - Sun, Aug 16

10:52 am - 6:25 amBOI Boise Air Term. Gowen Fld-SYD Sydney Kingsford Smith

27h 33m1 stop San Francisco

5:50 pm - 10:58 pmSYD Sydney Kingsford Smith-BOI Boise Air Term. Gowen Fld

21h 08m2 stops Los Angeles Los Angeles Phoenix Sky Harbor Intl

$1,678Multiple Airlines

Fri, Aug 14 - Sun, Aug 16

3:16 pm - 7:05 amGEG Spokane-SYD Sydney Kingsford Smith

22h 49m2 stops Portland Los Angeles Los Angeles

11:40 am - 1:23 pmSYD Sydney Kingsford Smith-GEG Spokane

66h 43m3 stops Auckland Intl Papeete Faaa Los Angeles Los Angeles

$1,725Multiple Airlines

Sat, Aug 15 - Sat, Aug 22

8:03 am - 7:30 amBOI Boise Air Term. Gowen Fld-SYD Sydney Kingsford Smith

31h 27m1 stop Los Angeles Los Angeles

5:50 pm - 10:12 amSYD Sydney Kingsford Smith-BOI Boise Air Term. Gowen Fld

32h 22m1 stop Los Angeles Los Angeles

$1,882Multiple Airlines

Fri, Aug 14 - Sun, Aug 16

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Air New Zealand flights from Idaho to Australia

Our best Air New Zealand deals on Idaho to Australia flight tickets

Air New Zealand

Oct 18

BOI8:15 amBoise Air Term. Gowen Fld

31h 30m

2 stops

SYD8:45 amSydney Kingsford Smith

Nov 1

SYD9:55 amSydney Kingsford Smith

24h 47m

2 stops

BOI5:42 pmBoise Air Term. Gowen Fld

$1,223

Air New Zealand

Aug 25

GEG12:33 pmSpokane

49h 47m

2 stops

SYD7:20 amSydney Kingsford Smith

Sep 8

SYD9:20 amSydney Kingsford Smith

26h 56m

2 stops

GEG7:16 pmSpokane

$1,268

Air New Zealand

Oct 25

GEG7:00 amSpokane

34h 00m

2 stops

BNE10:00 amBrisbane

Nov 18

BNE8:20 amBrisbane

28h 21m

2 stops

GEG6:41 pmSpokane

$1,288

United Airlines flights from Idaho to Australia

Our best United Airlines deals on Idaho to Australia flight tickets

United Airlines

Dec 2

GEG7:02 amSpokane

28h 18m

1 stop

SYD6:20 amSydney Kingsford Smith

Dec 16

SYD11:50 amSydney Kingsford Smith

18h 34m

1 stop

GEG11:24 amSpokane

$1,090

United Airlines

Dec 2

GEG5:00 amSpokane

31h 00m

2 stops

SYD7:00 amSydney Kingsford Smith

Dec 16

SYD11:50 amSydney Kingsford Smith

18h 34m

1 stop

GEG11:24 amSpokane

$1,094

United Airlines

Sep 6

GEG12:33 pmSpokane

25h 22m

1 stop

SYD6:55 amSydney Kingsford Smith

Sep 20

SYD9:30 amSydney Kingsford Smith

22h 36m

2 stops

GEG3:06 pmSpokane

$1,095

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Sun 10/18

3:37 pm-8:05 am

2 stops22h 28m

Sydney Kingsford Smith

Wed 10/28

9:25 pm-3:22 pm

1 stop35h 57m

$1,063

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Wed 9/16

1:36 pm-7:30 am

2 stops24h 54m

Sydney Kingsford Smith

Wed 9/23

9:10 am-1:23 pm

1 stop21h 13m

$1,063

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Sat 10/24

3:37 pm-6:25 am

2 stops44h 48m

Sydney Kingsford Smith

Tue 11/17

11:15 am-12:35 pm

1 stop20h 20m

$1,064

Quickest round-trip

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Wed 9/16

4:21 pm-7:05 am

1 stop21h 44m

Sydney Kingsford Smith

Wed 9/23

9:10 am-1:23 pm

1 stop21h 13m

$1,069

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Sun 10/18

2:51 pm-8:05 am

1 stop23h 14m

Sydney Kingsford Smith

Wed 10/28

9:25 pm-3:22 pm

1 stop35h 57m

$1,070

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Wed 12/2

7:02 am-6:20 am

1 stop28h 18m

Sydney Kingsford Smith

Wed 12/16

11:50 am-11:24 am

1 stop18h 34m

$1,090

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Wed 12/2

7:02 am-6:20 am

1 stop28h 18m

Sydney Kingsford Smith

Tue 12/15

11:50 am-11:24 am

1 stop18h 34m

$1,090

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Mon 10/26

4:24 pm-7:30 am

1 stop21h 06m

Sydney Kingsford Smith

Wed 11/18

10:40 am-3:48 pm

1 stop24h 08m

$1,090

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Mon 10/26

4:24 pm-7:30 am

1 stop21h 06m

Sydney Kingsford Smith

Sun 11/15

10:40 am-3:48 pm

1 stop24h 08m

$1,090

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Tue 10/20

4:24 pm-7:50 am

1 stop21h 26m

Sydney Kingsford Smith

Tue 10/27

9:40 am-3:44 pm

1 stop24h 04m

$1,090

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 January is, on average, the cheapest month to fly to Australia from Idaho, with most prices found around $1,068. If you aren’t able to travel during the month of January, then book flights to Australia from Idaho during August instead. Flights to Australia in August, while not as cheap as those in January, still average around $1,178.

Can stopping save me money on Idaho to Australia flights?

You could potentially save up to 3% 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

Fastest flight time	20h 10m
Direct flights	None

The fastest flight from Idaho to Australia takes 20h 10m

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

Search flight deals

Frequently asked questions about flying 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 2 as of August 2026.
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 $966	Free Cancellation	Rating 7.4 10,101 reviews		Search United Airlines flights
American Airlines	PriceFrom $967	Free Cancellation	Rating 7.1 11,902 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.