Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Idaho to Sydney from $646

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 10/7. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Idaho to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
2:51 pm - 8:00 am
GEG
-
SYD
23h 09m
1 stop
Qantas Airways Logo
7:15 pm - 8:55 pm
SYD
-
GEG
44h 40m
2 stops
$1,137Qantas Airways
Thu, Oct 29 - Mon, Nov 2
Qantas Airways Logo
2:51 pm - 8:00 am
GEG
-
SYD
23h 09m
1 stop
Qantas Airways Logo
7:15 pm - 8:55 pm
SYD
-
GEG
44h 40m
2 stops
$1,139Qantas Airways
Thu, Oct 29 - Mon, Nov 2
American Airlines Logo
12:17 pm - 6:55 am
BOI
-
SYD
26h 38m
1 stop
American Airlines Logo
12:00 pm - 10:20 pm
SYD
-
BOI
26h 20m
1 stop
$1,157American Airlines
Tue, Aug 11 - Tue, Aug 18
United Airlines Logo
6:58 pm - 6:55 am
BOI
-
SYD
19h 57m
1 stop
United Airlines Logo
10:20 am - 4:44 pm
SYD
-
BOI
22h 24m
1 stop
$1,160United Airlines
Wed, May 20 - Wed, Jun 17
American Airlines Logo
12:17 pm - 6:55 am
BOI
-
SYD
26h 38m
1 stop
American Airlines Logo
5:50 pm - 10:40 pm
SYD
-
BOI
20h 50m
2 stops
$1,161American Airlines
Tue, Aug 11 - Tue, Aug 18
United Airlines Logo
2:33 pm - 7:00 am
BOI
-
SYD
24h 27m
2 stops
United Airlines Logo
10:20 am - 9:35 pm
SYD
-
BOI
27h 15m
2 stops
$1,165United Airlines
Wed, May 20 - Wed, Jun 17
Delta Logo
4:20 pm - 6:50 am
GEG
-
SYD
21h 30m
1 stop
Delta Logo
9:15 am - 3:48 pm
SYD
-
GEG
23h 33m
1 stop
$1,195Delta
Mon, Jun 8 - Mon, Jun 15
Delta Logo
4:20 pm - 6:50 am
GEG
-
SYD
21h 30m
1 stop
Delta Logo
9:15 am - 11:59 pm
SYD
-
GEG
31h 44m
2 stops
$1,200Delta
Mon, Jun 8 - Mon, Jun 15
Multiple Airlines Logo
4:47 pm - 6:10 am
GEG
-
SYD
18h 23m
1 stop
Multiple Airlines Logo
2:05 pm - 8:55 pm
SYD
-
GEG
25h 50m
1 stop
$1,227Multiple Airlines
Sun, Nov 1 - Sat, Nov 21
Multiple Airlines Logo
4:47 pm - 6:10 am
GEG
-
SYD
18h 23m
1 stop
Multiple Airlines Logo
2:05 pm - 8:55 pm
SYD
-
GEG
25h 50m
1 stop
$1,228Multiple Airlines
Sun, Nov 1 - Sat, Nov 21

Qantas Airways flights from Idaho to Sydney

Our best Qantas Airways deals on Idaho to Sydney flight tickets
Qantas Airways
Oct 29
GEG2:51 pmSpokane
23h 09m
1 stop
SYD8:00 amSydney Kingsford Smith
Nov 2
SYD7:15 pmSydney Kingsford Smith
44h 40m
2 stops
GEG8:55 pmSpokane
$1,137
Qantas Airways
Oct 29
GEG2:51 pmSpokane
23h 09m
1 stop
SYD8:00 amSydney Kingsford Smith
Nov 2
SYD7:15 pmSydney Kingsford Smith
44h 40m
2 stops
GEG8:55 pmSpokane
$1,139
Qantas Airways
Oct 12
GEG2:51 pmSpokane
23h 14m
1 stop
SYD8:05 amSydney Kingsford Smith
Oct 16
SYD1:00 pmSydney Kingsford Smith
25h 47m
1 stop
GEG8:47 pmSpokane
$1,223

Delta flights from Idaho to Sydney

Our best Delta deals on Idaho to Sydney flight tickets
Delta
Jun 8
GEG4:20 pmSpokane
21h 30m
1 stop
SYD6:50 amSydney Kingsford Smith
Jun 15
SYD9:15 amSydney Kingsford Smith
23h 33m
1 stop
GEG3:48 pmSpokane
$1,195
Delta
Jun 8
GEG4:20 pmSpokane
21h 30m
1 stop
SYD6:50 amSydney Kingsford Smith
Jun 15
SYD9:15 amSydney Kingsford Smith
31h 44m
2 stops
GEG11:59 pmSpokane
$1,200
Delta
Jun 23
GEG4:20 pmSpokane
21h 30m
1 stop
SYD6:50 amSydney Kingsford Smith
Jun 30
SYD9:15 amSydney Kingsford Smith
23h 33m
1 stop
GEG3:48 pmSpokane
$1,495

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 May 10, 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 10/29

2:51 pm-8:00 am

1 stop23h 09m

Sydney Kingsford Smith

Mon 11/2

7:15 pm-8:55 pm

2 stops44h 40m

$1,137

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 10/29

2:51 pm-8:00 am

1 stop23h 09m

Sydney Kingsford Smith

Mon 11/2

7:15 pm-8:55 pm

2 stops44h 40m

$1,139

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Tue 8/11

12:17 pm-6:55 am

1 stop26h 38m

Sydney Kingsford Smith

Tue 8/18

12:00 pm-10:20 pm

1 stop26h 20m

$1,157
Quickest round-trip

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 5/20

6:58 pm-6:55 am

1 stop19h 57m

Sydney Kingsford Smith

Wed 6/17

10:20 am-4:44 pm

1 stop22h 24m

$1,160

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Tue 8/11

12:17 pm-6:55 am

1 stop26h 38m

Sydney Kingsford Smith

Tue 8/18

5:50 pm-10:40 pm

2 stops20h 50m

$1,161

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 5/20

2:33 pm-7:00 am

2 stops24h 27m

Sydney Kingsford Smith

Wed 6/17

10:20 am-9:35 pm

2 stops27h 15m

$1,165

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 6/8

4:20 pm-6:50 am

1 stop21h 30m

Sydney Kingsford Smith

Mon 6/15

9:15 am-3:48 pm

1 stop23h 33m

$1,195

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 6/8

4:20 pm-6:50 am

1 stop21h 30m

Sydney Kingsford Smith

Mon 6/15

9:15 am-11:59 pm

2 stops31h 44m

$1,200

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sun 11/1

4:47 pm-6:10 am

1 stop18h 23m

Sydney Kingsford Smith

Sat 11/21

2:05 pm-8:55 pm

1 stop25h 50m

$1,227

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sun 11/1

4:47 pm-6:10 am

1 stop18h 23m

Sydney Kingsford Smith

Sat 11/21

2:05 pm-8:55 pm

1 stop25h 50m

$1,228

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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

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 September is also very affordable. Most momondo users find prices during this month for around $873.

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

18h 23m

Direct flights

None
The fastest flight from Idaho to Sydney takes 18h 23m
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 $1,094Free CancellationRating
7.4
9,694 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
Leura
Randwick
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.

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 6/9
Tue 6/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia