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Cheap flights from Idaho to Sydney from $864

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Sydney departing on 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Idaho to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:14 pm - 7:05 am
GEG
-
SYD
19h 51m
1 stop
Alaska Airlines Logo
9:10 am - 10:52 pm
SYD
-
GEG
30h 42m
1 stop
$1,079Alaska Airlines
Thu, May 7 - Thu, May 14
United Airlines Logo
12:25 pm - 6:55 am
GEG
-
SYD
25h 30m
1 stop
United Airlines Logo
10:20 am - 11:16 am
SYD
-
GEG
17h 56m
1 stop
$1,104United Airlines
Thu, May 7 - Thu, May 14
American Airlines Logo
1:20 pm - 7:05 am
GEG
-
SYD
24h 45m
2 stops
American Airlines Logo
5:50 pm - 11:09 pm
SYD
-
GEG
22h 19m
2 stops
$1,105American Airlines
Thu, May 7 - Thu, May 14
American Airlines Logo
2:14 pm - 7:30 am
BOI
-
SYD
25h 16m
2 stops
American Airlines Logo
12:00 pm - 10:54 pm
SYD
-
BOI
26h 54m
1 stop
$1,230American Airlines
Sun, Apr 19 - Sun, Apr 26
Delta Logo
4:55 pm - 6:50 am
BOI
-
SYD
21h 55m
1 stop
Delta Logo
9:15 am - 11:00 pm
SYD
-
BOI
29h 45m
1 stop
$1,234Delta
Sun, Apr 19 - Sun, Apr 26
Delta Logo
6:41 pm - 6:50 am
BOI
-
SYD
44h 09m
2 stops
Delta Logo
9:15 am - 6:35 pm
SYD
-
BOI
25h 20m
2 stops
$1,247Delta
Sat, May 30 - Mon, Jun 8
Hawaiian Airlines Logo
2:47 pm - 6:50 pm
GEG
-
SYD
34h 03m
2 stops
Hawaiian Airlines Logo
8:45 pm - 11:59 pm
SYD
-
GEG
20h 14m
2 stops
$1,864Hawaiian Airlines
Thu, Apr 2 - Sun, Apr 5
Hawaiian Airlines Logo
5:05 am - 7:45 pm
GEG
-
SYD
20h 40m
2 stops
Hawaiian Airlines Logo
8:45 pm - 11:59 pm
SYD
-
GEG
21h 14m
2 stops
$1,912Hawaiian Airlines
Thu, Mar 26 - Thu, Apr 2
Multiple Airlines Logo
1:41 pm - 7:20 am
GEG
-
SYD
24h 39m
2 stops
Multiple Airlines Logo
7:10 am - 10:52 pm
SYD
-
GEG
32h 42m
3 stops
$2,383Multiple Airlines
Thu, May 7 - Thu, May 14
Multiple Airlines Logo
6:00 am - 6:55 am
GEG
-
SYD
30h 55m
1 stop
Multiple Airlines Logo
9:25 pm - 11:37 am
SYD
-
GEG
31h 12m
1 stop
$2,384Multiple Airlines
Thu, Apr 2 - Sun, Apr 5

Air New Zealand flights from Idaho to Sydney

Our best Air New Zealand deals on Idaho to Sydney flight tickets
Air New Zealand
Jul 30
BOI7:05 pmBoise Air Term. Gowen Fld
19h 50m
1 stop
SYD6:55 amSydney Kingsford Smith
Aug 31
SYD11:55 amSydney Kingsford Smith
25h 24m
2 stops
BOI9:19 pmBoise Air Term. Gowen Fld
$1,524
Air New Zealand
Apr 5
GEG12:35 pmSpokane
25h 20m
1 stop
SYD6:55 amSydney Kingsford Smith
Apr 11
SYD7:20 pmSydney Kingsford Smith
57h 23m
2 stops
GEG11:43 amSpokane
$2,892
Air New Zealand
Apr 5
GEG12:35 pmSpokane
27h 10m
2 stops
SYD8:45 amSydney Kingsford Smith
Apr 11
SYD7:20 pmSydney Kingsford Smith
57h 23m
2 stops
GEG11:43 amSpokane
$2,924

United Airlines flights from Idaho to Sydney

Our best United Airlines deals on Idaho to Sydney flight tickets
United Airlines
May 7
GEG12:25 pmSpokane
25h 30m
1 stop
SYD6:55 amSydney Kingsford Smith
May 14
SYD10:20 amSydney Kingsford Smith
17h 56m
1 stop
GEG11:16 amSpokane
$1,104
United Airlines
May 7
GEG7:10 amSpokane
30h 50m
2 stops
SYD7:00 amSydney Kingsford Smith
May 14
SYD10:20 amSydney Kingsford Smith
27h 56m
2 stops
GEG9:16 pmSpokane
$1,109
United Airlines
Jun 1
BOI7:05 pmBoise Air Term. Gowen Fld
19h 50m
1 stop
SYD6:55 amSydney Kingsford Smith
Jun 8
SYD10:20 amSydney Kingsford Smith
18h 48m
1 stop
BOI1:08 pmBoise Air Term. Gowen Fld
$1,229

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to Sydney 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, momondo users made 832,500 searches. Data last updated March 24, 2026.
Use the filters below to find and compare flights from Idaho to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 5/7

6:14 pm-7:05 am

1 stop19h 51m

Sydney Kingsford Smith

Thu 5/14

9:10 am-10:52 pm

1 stop30h 42m

$1,079

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 5/7

12:25 pm-6:55 am

1 stop25h 30m

Sydney Kingsford Smith

Thu 5/14

10:20 am-11:16 am

1 stop17h 56m

$1,104

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 5/7

1:20 pm-7:05 am

2 stops24h 45m

Sydney Kingsford Smith

Thu 5/14

5:50 pm-11:09 pm

2 stops22h 19m

$1,105

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 4/19

2:14 pm-7:30 am

2 stops25h 16m

Sydney Kingsford Smith

Sun 4/26

12:00 pm-10:54 pm

1 stop26h 54m

$1,230

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 4/19

4:55 pm-6:50 am

1 stop21h 55m

Sydney Kingsford Smith

Sun 4/26

9:15 am-11:00 pm

1 stop29h 45m

$1,234

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 5/30

6:41 pm-6:50 am

2 stops44h 09m

Sydney Kingsford Smith

Mon 6/8

9:15 am-6:35 pm

2 stops25h 20m

$1,247

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 4/2

2:47 pm-6:50 pm

2 stops34h 03m

Sydney Kingsford Smith

Sun 4/5

8:45 pm-11:59 pm

2 stops20h 14m

$1,864
Quickest round-trip

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 3/26

5:05 am-7:45 pm

2 stops20h 40m

Sydney Kingsford Smith

Thu 4/2

8:45 pm-11:59 pm

2 stops21h 14m

$1,912

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 5/7

1:41 pm-7:20 am

2 stops24h 39m

Sydney Kingsford Smith

Thu 5/14

7:10 am-10:52 pm

3 stops32h 42m

$2,383

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 4/2

6:00 am-6:55 am

1 stop30h 55m

Sydney Kingsford Smith

Sun 4/5

9:25 pm-11:37 am

1 stop31h 12m

$2,384

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Idaho to Sydney

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

Can stopping save me money on Idaho to Sydney flights?

You could potentially save up to 3% on your flight if you consider stops on a Idaho to Sydney flight.

Cheap Idaho to Sydney flight deals and tips

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

Fastest flight time

19h 50m

Direct flights

None
The fastest flight from Idaho to Sydney takes 19h 50m
There are no direct flights from Idaho to Sydney. There are no popular flight routes from Idaho to Sydney.
Search flight deals

  • When did momondo last update prices for flights from Idaho to Sydney Kingsford Smith Airport?

    Prices for flights from Idaho to Sydney Kingsford Smith Airport refresh daily.

  • How many operators does momondo search for flights from Idaho to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Idaho to Sydney Kingsford Smith Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Idaho to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to Sydney

Compare and see reviews for airlines that fly from Idaho to Sydney with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $987Free CancellationRating
7.1
11,492 reviews
Search American Airlines flights
United AirlinesPriceFrom $1,094Free CancellationRating
7.4
9,467 reviews
Search United Airlines flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Katoomba
Wollongong
Penrith
Manly
Randwick
Coogee
Leura
Lithgow
Cronulla
Charlestown
Terrigal
Swansea

Why use momondo?

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

Finding the right flight to Sydney from Idaho is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Sydney from Idaho which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Sydney from Idaho. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Idaho to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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