Cheap flights from Idaho to Sydney from $1,350

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Sydney departing on 30/8. 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

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Cheap return flights

United Airlines Logo
05:15 - 07:00GEG-SYD
32h 45m2 stops
United Airlines Logo
09:30 - 21:03SYD-GEG
28h 33m2 stops
$1,350United Airlines
Find Deal
Sat, 30 Aug - Sat, 6 Sep
United Airlines Logo
16:05 - 07:00GEG-SYD
67h 55m2 stops
United Airlines Logo
12:10 - 10:42SYD-GEG
17h 32m1 stop
$1,400United Airlines
Find Deal
Tue, 4 Nov - Mon, 17 Nov
Qantas Airways Logo
14:38 - 09:00GEG-SYD
23h 22m1 stop
Qantas Airways Logo
17:45 - 13:58SYD-GEG
39h 13m1 stop
$1,405Qantas Airways
Find Deal
Tue, 4 Nov - Mon, 17 Nov
 Logo
14:28 - 07:05BOI-SYD
24h 37m2 stops
 Logo
09:10 - 15:54SYD-BOI
22h 44m2 stops
$1,482
Find Deal
Tue, 9 Sep - Tue, 16 Sep
American Airlines Logo
14:06 - 09:00BOI-SYD
24h 54m2 stops
American Airlines Logo
11:15 - 16:51SYD-BOI
23h 36m2 stops
$1,557American Airlines
Find Deal
Wed, 19 Nov - Wed, 18 Feb
American Airlines Logo
13:57 - 07:05BOI-SYD
25h 08m2 stops
American Airlines Logo
09:10 - 20:02SYD-BOI
26h 52m2 stops
$1,561American Airlines
Find Deal
Wed, 24 Sep - Wed, 1 Oct
Qantas Airways Logo
12:29 - 06:55GEG-SYD
25h 26m1 stop
Qantas Airways Logo
17:45 - 22:25SYD-GEG
21h 40m1 stop
$1,632Qantas Airways
Find Deal
Sat, 30 Aug - Sat, 6 Sep
 Logo
19:17 - 14:40BOI-SYD
27h 23m2 stops
 Logo
17:45 - 22:54SYD-BOI
21h 09m1 stop
$1,762
Find Deal
Tue, 9 Sep - Tue, 16 Sep
Alaska Airlines Logo
20:26 - 08:05BOI-SYD
18h 39m1 stop
Alaska Airlines Logo
11:15 - 13:40SYD-BOI
20h 25m1 stop
$1,765Alaska Airlines
Find Deal
Sat, 18 Oct - Fri, 14 Nov
Alaska Airlines Logo
09:00 - 08:05BOI-SYD
30h 05m2 stops
Alaska Airlines Logo
10:10 - 13:35SYD-BOI
20h 25m1 stop
$1,773Alaska Airlines
Find Deal
Thu, 9 Oct - Sat, 18 Oct

Qantas Airways flights from Idaho to Sydney

Our best Qantas Airways deals on Idaho to Sydney flight tickets
Qantas Airways
4 Nov
GEG14:38Spokane
23h 22m
1 stop
SYD09:00Sydney Kingsford Smith
17 Nov
SYD17:45Sydney Kingsford Smith
39h 13m
1 stop
GEG13:58Spokane
Qantas Airways
30 Aug
GEG12:29Spokane
25h 26m
1 stop
SYD06:55Sydney Kingsford Smith
6 Sept
SYD17:45Sydney Kingsford Smith
21h 40m
1 stop
GEG22:25Spokane
Qantas Airways
14 Aug
BOI18:51Boise Air Term. Gowen Fld
20h 39m
1 stop
SYD07:30Sydney Kingsford Smith
16 Aug
SYD17:45Sydney Kingsford Smith
21h 09m
1 stop
BOI22:54Boise Air Term. Gowen Fld

Alaska Airlines flights from Idaho to Sydney

Our best Alaska Airlines deals on Idaho to Sydney flight tickets
Alaska Airlines
18 Oct
BOI20:26Boise Air Term. Gowen Fld
18h 39m
1 stop
SYD08:05Sydney Kingsford Smith
14 Nov
SYD11:15Sydney Kingsford Smith
20h 25m
1 stop
BOI13:40Boise Air Term. Gowen Fld
Alaska Airlines
9 Oct
BOI09:00Boise Air Term. Gowen Fld
30h 05m
2 stops
SYD08:05Sydney Kingsford Smith
18 Oct
SYD10:10Sydney Kingsford Smith
20h 25m
1 stop
BOI13:35Boise Air Term. Gowen Fld
Alaska Airlines
15 Oct
BOI10:15Boise Air Term. Gowen Fld
52h 50m
2 stops
SYD08:05Sydney Kingsford Smith
14 Nov
SYD11:15Sydney Kingsford Smith
30h 39m
2 stops
BOI23:54Boise Air Term. Gowen Fld

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 11 August 2025.
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

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 30/8

05:15-07:00

2 stops32h 45m

Sydney Kingsford Smith

Sat 6/9

09:30-21:03

2 stops28h 33m

$1,350

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 4/11

16:05-07:00

2 stops67h 55m

Sydney Kingsford Smith

Mon 17/11

12:10-10:42

1 stop17h 32m

$1,400

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 4/11

14:38-09:00

1 stop23h 22m

Sydney Kingsford Smith

Mon 17/11

17:45-13:58

1 stop39h 13m

$1,405

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Tue 9/9

14:28-07:05

2 stops24h 37m

Sydney Kingsford Smith

Tue 16/9

09:10-15:54

2 stops22h 44m

$1,482

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 19/11

14:06-09:00

2 stops24h 54m

Sydney Kingsford Smith

Wed 18/2

11:15-16:51

2 stops23h 36m

$1,557

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 24/9

13:57-07:05

2 stops25h 08m

Sydney Kingsford Smith

Wed 1/10

09:10-20:02

2 stops26h 52m

$1,561

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 30/8

12:29-06:55

1 stop25h 26m

Sydney Kingsford Smith

Sat 6/9

17:45-22:25

1 stop21h 40m

$1,632

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Tue 9/9

19:17-14:40

2 stops27h 23m

Sydney Kingsford Smith

Tue 16/9

17:45-22:54

1 stop21h 09m

$1,762

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 18/10

20:26-08:05

1 stop18h 39m

Sydney Kingsford Smith

Fri 14/11

11:15-13:40

1 stop20h 25m

$1,765

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 9/10

09:00-08:05

2 stops30h 05m

Sydney Kingsford Smith

Sat 18/10

10:10-13:35

1 stop20h 25m

$1,773

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap Idaho to Sydney flight deals and tips

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

Best price found

$1,350

Fastest flight time

18h 38m

Direct flights

None

Airports in Sydney

1 airport
The best flight deal from Idaho to Sydney found on momondo in the last 72 hours is $1,350
The fastest flight from Idaho to Sydney takes 18h 38m
There are no direct flights from Idaho to Sydney. Popular non-direct routes for this connection are Spokane Airport - Sydney Kingsford Smith Airport and Boise Air Term. Gowen Fld Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)
  • 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 old do you have to be to fly from Idaho to Sydney Kingsford Smith Airport?

    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 stopovers 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 Sydney Kingsford Smith Airport.

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

    The travel and health documents you'll need for your trip to Sydney Kingsford Smith Airport 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 licence and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Idaho to Sydney?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Idaho from Sydney. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Idaho to Sydney with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near Sydney?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho to Sydney. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Idaho to Sydney flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Idaho to Sydney.

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

Price alerts on flights to Sydney from Idaho are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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1 adult
Sat 16/8
Sat 23/8

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