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Cheap flights from Idaho to Sydney from $565

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 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:05 am - 6:25 am
GEG
-
SYD
28h 20m
2 stops
Multiple Airlines Logo
11:15 am - 10:25 pm
SYD
-
GEG
30h 10m
1 stop
$1,072Multiple Airlines
Sun, Nov 1 - Sat, Nov 21
Multiple Airlines Logo
12:57 pm - 6:25 am
GEG
-
SYD
22h 28m
1 stop
Multiple Airlines Logo
11:15 am - 10:25 pm
SYD
-
GEG
30h 10m
1 stop
$1,080Multiple Airlines
Sun, Nov 1 - Sat, Nov 21
Multiple Airlines Logo
1:23 pm - 6:25 am
GEG
-
SYD
22h 02m
2 stops
Multiple Airlines Logo
11:15 am - 5:21 pm
SYD
-
GEG
25h 06m
1 stop
$1,081Multiple Airlines
Wed, Dec 2 - Tue, Dec 15
Multiple Airlines Logo
4:21 pm - 7:30 am
GEG
-
SYD
22h 09m
2 stops
Multiple Airlines Logo
5:50 pm - 10:15 pm
SYD
-
GEG
21h 25m
1 stop
$1,082Multiple Airlines
Thu, Jul 30 - Sat, Aug 15
American Airlines Logo
12:12 pm - 7:05 am
BOI
-
SYD
26h 53m
2 stops
American Airlines Logo
12:00 pm - 10:11 pm
SYD
-
BOI
26h 11m
1 stop
$1,188American Airlines
Wed, Aug 5 - Wed, Aug 12
American Airlines Logo
1:57 pm - 7:30 am
BOI
-
SYD
25h 33m
2 stops
American Airlines Logo
12:00 pm - 10:11 pm
SYD
-
BOI
26h 11m
1 stop
$1,239American Airlines
Thu, Jul 30 - Mon, Aug 31
Air Canada Logo
6:30 am - 7:20 am
BOI
-
SYD
32h 50m
2 stops
Air Canada Logo
9:20 am - 11:04 am
SYD
-
BOI
41h 44m
2 stops
$1,314Air Canada
Tue, Aug 18 - Sun, Aug 23
Air Canada Logo
6:30 am - 7:20 am
BOI
-
SYD
32h 50m
2 stops
Air Canada Logo
9:20 am - 10:40 pm
SYD
-
BOI
29h 20m
2 stops
$1,361Air Canada
Thu, Jul 30 - Mon, Aug 31
United Airlines Logo
2:41 pm - 6:55 am
BOI
-
SYD
24h 14m
2 stops
United Airlines Logo
10:20 am - 9:35 am
SYD
-
BOI
39h 15m
2 stops
$1,411United Airlines
Thu, Jul 30 - Mon, Aug 31
United Airlines Logo
2:41 pm - 6:55 am
BOI
-
SYD
24h 14m
2 stops
United Airlines Logo
10:20 am - 9:35 am
SYD
-
BOI
39h 15m
2 stops
$1,412United Airlines
Thu, Jul 30 - Mon, Aug 31

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Air Canada flights from Idaho to Sydney

Our best Air Canada deals on Idaho to Sydney flight tickets
Air Canada
Nov 1
GEG7:00 amSpokane
31h 35m
2 stops
SYD9:35 amSydney Kingsford Smith
Nov 21
SYD11:20 amSydney Kingsford Smith
28h 41m
2 stops
GEG9:01 pmSpokane
$1,136
Air Canada
Aug 18
BOI6:30 amBoise Air Term. Gowen Fld
32h 50m
2 stops
SYD7:20 amSydney Kingsford Smith
Aug 23
SYD9:20 amSydney Kingsford Smith
41h 44m
2 stops
BOI11:04 amBoise Air Term. Gowen Fld
$1,314
Air Canada
Jul 30
BOI6:30 amBoise Air Term. Gowen Fld
32h 50m
2 stops
SYD7:20 amSydney Kingsford Smith
Aug 31
SYD9:20 amSydney Kingsford Smith
29h 20m
2 stops
BOI10:40 pmBoise Air Term. Gowen Fld
$1,361

United Airlines flights from Idaho to Sydney

Our best United Airlines deals on Idaho to Sydney flight tickets
United Airlines
Jul 1
BOI7:00 amBoise Air Term. Gowen Fld
32h 00m
1 stop
SYD7:00 amSydney Kingsford Smith
Jul 15
SYD9:30 amSydney Kingsford Smith
28h 35m
1 stop
BOI10:05 pmBoise Air Term. Gowen Fld
$1,200
United Airlines
Aug 17
GEG12:33 pmSpokane
25h 22m
1 stop
SYD6:55 amSydney Kingsford Smith
Aug 21
SYD10:20 amSydney Kingsford Smith
17h 10m
1 stop
GEG10:30 amSpokane
$1,226
United Airlines
Dec 2
GEG7:02 amSpokane
28h 18m
1 stop
SYD6:20 amSydney Kingsford Smith
Dec 15
SYD11:50 amSydney Kingsford Smith
18h 34m
1 stop
GEG11:24 amSpokane
$1,227

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 June 27, 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

Sun 11/1

7:05 am-6:25 am

2 stops28h 20m

Sydney Kingsford Smith

Sat 11/21

11:15 am-10:25 pm

1 stop30h 10m

$1,072

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sun 11/1

12:57 pm-6:25 am

1 stop22h 28m

Sydney Kingsford Smith

Sat 11/21

11:15 am-10:25 pm

1 stop30h 10m

$1,080

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Wed 12/2

1:23 pm-6:25 am

2 stops22h 02m

Sydney Kingsford Smith

Tue 12/15

11:15 am-5:21 pm

1 stop25h 06m

$1,081
Quickest round-trip

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 7/30

4:21 pm-7:30 am

2 stops22h 09m

Sydney Kingsford Smith

Sat 8/15

5:50 pm-10:15 pm

1 stop21h 25m

$1,082

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 8/5

12:12 pm-7:05 am

2 stops26h 53m

Sydney Kingsford Smith

Wed 8/12

12:00 pm-10:11 pm

1 stop26h 11m

$1,188

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 7/30

1:57 pm-7:30 am

2 stops25h 33m

Sydney Kingsford Smith

Mon 8/31

12:00 pm-10:11 pm

1 stop26h 11m

$1,239

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Tue 8/18

6:30 am-7:20 am

2 stops32h 50m

Sydney Kingsford Smith

Sun 8/23

9:20 am-11:04 am

2 stops41h 44m

$1,314

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 7/30

6:30 am-7:20 am

2 stops32h 50m

Sydney Kingsford Smith

Mon 8/31

9:20 am-10:40 pm

2 stops29h 20m

$1,361

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 7/30

2:41 pm-6:55 am

2 stops24h 14m

Sydney Kingsford Smith

Mon 8/31

10:20 am-9:35 am

2 stops39h 15m

$1,411

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 7/30

2:41 pm-6:55 am

2 stops24h 14m

Sydney Kingsford Smith

Mon 8/31

10:20 am-9:35 am

2 stops39h 15m

$1,412

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

What is the cheapest month to fly to Sydney?

In general, January is the cheapest month to fly from Idaho to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you are unable to visit Sydney during the month of January, then departing from Idaho during the month October is also very affordable. Most momondo users find prices during this month for around $1,016.

Can stopping save me money on Idaho to Sydney flights?

You could potentially save up to 29% 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

18h 38m

Direct flights

None
The fastest flight from Idaho to Sydney takes 18h 38m
There are no direct flights from Idaho to Sydney. There are no popular flight routes from Idaho to Sydney.
Search flight deals

Frequently asked questions about flying from Idaho to Sydney

  • 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
United AirlinesPriceFrom $1,247Free CancellationRating
7.4
9,893 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
Penrith
Wollongong
Katoomba
Randwick
Leura
Lithgow
Manly
Coogee
Cronulla
Terrigal
Charlestown
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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