How long is the flight from Idaho to Sydney?

Departing from Idaho to Sydney will take you 23h 50m. Airlines will cover a distance of 12796 km. Find deals

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm. Find deals

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C). Find deals

What is the cheapest time of day to fly from ID to SYD?

When flying from Idaho to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Sydney from Idaho?

Sydney Kingsford Smith (SYD), located 7.5 km from the city centre, is the airport you fly into when you book flights from Idaho to Sydney.

Can I find deals for flights from Idaho to Sydney that include hotel bookings?

Yes. In addition to deals on Idaho to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Idaho to Sydney?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Sydney.

Can I find deals for business class flights from Idaho to Sydney?

Yes. Cheapflights offers flight deals from Idaho to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$717+ Flights from Idaho to Sydney

Cheap flight deals from Idaho to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Idaho to Sydney
Explore the most affordable flight options available from Idaho to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 December 2025.

Mon 8/1213:52GEG - SYD

1 stop22h 33mMultiple Airlines

Wed 10/1211:20SYD - GEG

1 stop30h 04mMultiple Airlines

Deal found 4/12$1,319

Mon 8/1205:17GEG - SYD

2 stops31h 58mQantas Airways

Wed 10/1211:20SYD - GEG

1 stop30h 04mQantas Airways

Deal found 4/12$1,614

Tue 30/1214:08BOI - SYD

1 stop22h 42mDelta

Sun 15/210:40SYD - BOI

2 stops29h 16mDelta

Deal found 4/12$1,927

Tue 30/1207:00BOI - SYD

1 stop29h 55mAmerican Airlines

Sun 15/214:05SYD - BOI

1 stop26h 31mAmerican Airlines

Deal found 3/12$2,169

Tue 30/1214:10BOI - SYD

1 stop25h 05mUnited Airlines

Sun 15/212:10SYD - BOI

1 stop27h 01mUnited Airlines

Deal found 4/12$2,377

Sat 6/1213:25BOI - SYD

2 stops24h 00mMultiple Airlines

Mon 8/1217:45SYD - BOI

1 stop23h 20mMultiple Airlines

Deal found 3/12$2,554

Sat 6/1213:50BOI - SYD

2 stops24h 55mAir New Zealand

Mon 8/1211:45SYD - BOI

2 stops41h 49mAir New Zealand

Deal found 2/12$2,710

Tue 30/1207:15BOI - SYD

3 stops41h 50mMultiple Airlines

Sun 15/207:05SYD - BOI

3 stops33h 55mMultiple Airlines

Deal found 4/12$4,070

Tue 30/1207:15BOI - SYD

3 stops40h 25mAir Tahiti Nui

Sun 15/208:55SYD - BOI

3 stops32h 05mAir Tahiti Nui

Deal found 3/12$4,658

Best flights from Idaho to Sydney
Discover carefully curated flight deals from Idaho to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 December 2025.

Mon 23/317:41GEG - SYD

1 stop21h 19mMultiple Airlines

Mon 20/417:50SYD - GEG

1 stop21h 48mMultiple Airlines

Deal found 2/12$1,302

Mon 23/315:10GEG - SYD

2 stops23h 50mAmerican Airlines

Mon 20/417:50SYD - GEG

2 stops22h 06mAmerican Airlines

Deal found 2/12$1,310

Sat 17/105:00GEG - SYD

2 stops33h 05mUnited Airlines

Sat 24/112:10SYD - GEG

1 stop17h 34mUnited Airlines

Deal found 3/12$1,326

Tue 30/1215:30BOI - SYD

2 stops23h 00mDelta

Sun 15/210:40SYD - BOI

2 stops23h 35mDelta

Deal found 4/12$1,927

Thu 5/219:02BOI - SYD

1 stop19h 58mAlaska Airlines

Mon 9/211:20SYD - BOI

1 stop20h 15mAlaska Airlines

Deal found 1/12$1,990

Fri 10/412:50GEG - SYD

1 stop24h 35mMultiple Airlines

Sat 18/417:50SYD - GEG

1 stop21h 48mMultiple Airlines

Deal found 2/12$1,304

Fri 10/415:50GEG - SYD

2 stops22h 40mAmerican Airlines

Sat 18/417:50SYD - GEG

2 stops22h 06mAmerican Airlines

Deal found 2/12$1,311

Tue 3/216:10GEG - SYD

2 stops67h 50mUnited Airlines

Sat 21/211:50SYD - GEG

2 stops28h 27mUnited Airlines

Deal found 4/12$1,354

Tue 3/216:59GEG - SYD

1 stop18h 11mMultiple Airlines

Sat 21/214:05SYD - GEG

1 stop22h 48mMultiple Airlines

Deal found 4/12$1,382

Tue 20/106:00GEG - SYD

1 stop29h 55mAmerican Airlines

Tue 27/111:20SYD - GEG

2 stops22h 38mAmerican Airlines

Deal found 2/12$1,388

Sat 10/105:40BOI - SYD

2 stops20h 05mAlaska Airlines

Sun 18/121:40SYD - BOI

2 stops31h 12mAlaska Airlines

Deal found 4/12$1,995

Wed 21/107:20BOI - SYD

1 stop29h 35mAmerican Airlines

Wed 11/214:05SYD - BOI

1 stop23h 20mAmerican Airlines

Deal found 2/12$1,715

Wed 11/307:00BOI - SYD

1 stop30h 55mAmerican Airlines

Mon 16/313:05SYD - BOI

1 stop26h 31mAmerican Airlines

Deal found 1/12$1,715

Mon 26/114:48BOI - SYD

2 stops24h 12mAmerican Airlines

Mon 2/214:05SYD - BOI

1 stop23h 20mAmerican Airlines

Deal found 4/12$1,739

Thu 5/207:20BOI - SYD

1 stop29h 35mAmerican Airlines

Mon 9/217:30SYD - BOI

2 stops37h 38mAmerican Airlines

Deal found 1/12$1,984

Last-minute flights from Idaho to Sydney
Discover last-minute flight deals from Idaho to Sydney. Data last updated 5 December 2025 and is based on user searches.

Tue 30/1214:08BOI - SYD

1 stop22h 42mDelta

Sun 15/210:40SYD - BOI

2 stops29h 16mDelta

Deal found 4/12$1,927

Sat 10/105:40BOI - SYD

2 stops20h 05mAlaska Airlines

Sun 18/121:40SYD - BOI

2 stops31h 12mAlaska Airlines

Deal found 4/12$1,995

Sat 17/105:00GEG - SYD

2 stops33h 05mUnited Airlines

Sat 24/112:10SYD - GEG

1 stop17h 34mUnited Airlines

Deal found 3/12$1,326

Sat 17/106:00GEG - SYD

1 stop29h 55mMultiple Airlines

Sat 24/111:20SYD - GEG

1 stop23h 59mMultiple Airlines

Deal found 3/12$1,406

Sun 18/106:50GEG - SYD

1 stop29h 35mQantas Airways

Sun 25/114:05SYD - GEG

1 stop23h 44mQantas Airways

Deal found 3/12$1,494

Sun 18/107:20GEG - SYD

2 stops30h 10mDelta

Sun 25/110:40SYD - GEG

2 stops23h 20mDelta

Deal found 3/12$1,709

Tue 20/106:50GEG - SYD

1 stop29h 35mMultiple Airlines

Tue 27/121:25SYD - GEG

1 stop37h 00mMultiple Airlines

Deal found 2/12$1,375

Tue 20/106:00GEG - SYD

1 stop29h 55mAmerican Airlines

Tue 27/111:20SYD - GEG

2 stops22h 38mAmerican Airlines

Deal found 2/12$1,388

Tue 20/109:20GEG - SYD

2 stops26h 30mDelta

Tue 27/114:15SYD - GEG

2 stops27h 37mDelta

Deal found 2/12$1,491

Mon 26/119:02BOI - SYD

1 stop19h 58mAlaska Airlines

Mon 2/211:20SYD - BOI

1 stop20h 15mAlaska Airlines

Deal found 4/12$1,627

Mon 26/112:37BOI - SYD

2 stops26h 23mAmerican Airlines

Mon 2/211:20SYD - BOI

2 stops23h 47mAmerican Airlines

Deal found 4/12$1,738

Mon 26/110:15BOI - SYD

1 stop28h 50mUnited Airlines

Mon 2/211:20SYD - BOI

1 stop26h 31mUnited Airlines

Deal found 4/12$1,757

One-way flights from Idaho to Sydney
Search for one-way flight options from Idaho to Sydney. Find affordable one-way fares based on user searches. Data last updated 5 December 2025.

Thu 29/112:24GEG - SYD

1 stop22h 56mUnited Airlines

Deal found 3/12$717

Sat 31/106:23BOI - SYD

3 stops53h 47mMultiple Airlines

Deal found 3/12$877

Sat 31/113:58BOI - SYD

1 stop22h 57mAmerican Airlines

Deal found 3/12$962

Thu 12/212:00GEG - SYD

3 stops50h 50mMultiple Airlines

Deal found 1/12$4,312

Wed 28/117:55BOI - SYD

3 stops48h 25mMultiple Airlines

Deal found 4/12$5,437

Thu 12/205:00GEG - SYD

2 stops43h 45mAlaska Airlines

Deal found 1/12$6,405

Wed 28/119:05BOI - SYD

1 stop20h 10mAir New Zealand

Deal found 4/12$6,896

Find flight deals from Idaho to Sydney

Round-trip from	$1,302
One-way from	$717
Popular in	December
Cheapest in	September
Average price	$2,211

23/3-20/4
2 total stops
43h 07m total
Idaho to Sydney

Search Deals

United Airlines
29/1
1 total stop
22h 56m total
Idaho to Sydney

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($323 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($50 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 23/3

17:41-09:00

1 stop21h 19m

Sydney Kingsford Smith

Mon 20/4

17:50-22:38

1 stop21h 48m

$1,302

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 10/4

12:50-06:25

1 stop24h 35m

Sydney Kingsford Smith

Sat 18/4

17:50-22:38

1 stop21h 48m

$1,304

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 23/3

15:10-09:00

2 stops23h 50m

Sydney Kingsford Smith

Mon 20/4

17:50-22:56

2 stops22h 06m

$1,310

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 10/4

15:50-07:30

2 stops22h 40m

Sydney Kingsford Smith

Sat 18/4

17:50-22:56

2 stops22h 06m

$1,311

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 17/1

05:00-09:05

2 stops33h 05m

Sydney Kingsford Smith

Sat 24/1

12:10-10:44

1 stop17h 34m

$1,326

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/2

16:10-07:00

2 stops67h 50m

Sydney Kingsford Smith

Sat 21/2

11:50-21:17

2 stops28h 27m

$1,354

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/2

16:59-06:10

1 stop18h 11m

Sydney Kingsford Smith

Sat 21/2

14:05-17:53

1 stop22h 48m

$1,382

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 20/1

06:00-06:55

1 stop29h 55m

Sydney Kingsford Smith

Tue 27/1

11:20-14:58

2 stops22h 38m

$1,388

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 21/1

07:20-06:55

1 stop29h 35m

Sydney Kingsford Smith

Wed 11/2

14:05-19:25

1 stop23h 20m

$1,715

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 11/3

07:00-06:55

1 stop30h 55m

Sydney Kingsford Smith

Mon 16/3

13:05-22:36

1 stop26h 31m

$1,715

Flights are sorted by cheapest return flights first.

Deals found on 3/12

Showing 1-10 of 22 results

Best time to book a flight from Idaho to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Idaho with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Sydney

What is the cheapest month to book a flight from Idaho to Sydney?

Currently, September is the cheapest month in which you can book a flight from Idaho to Sydney (average of $1,340). Flying from Idaho to Sydney in July is currently the most expensive (average of $2,202). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

What airport do you fly into for flights to Sydney from Idaho?
Sydney Kingsford Smith (SYD), located 7.5 km from the city centre, is the airport you fly into when you book flights from Idaho to Sydney.
How long is the flight from Idaho to Sydney?
Departing from Idaho to Sydney will take you 23h 50m. Airlines will cover a distance of 12796 km.
Can I find deals for flights from Idaho to Sydney that include hotel bookings?
Yes. In addition to deals on Idaho to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Idaho to Sydney?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Sydney.
Can I find deals for business class flights from Idaho to Sydney?
Yes. Cheapflights offers flight deals from Idaho to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Idaho to Sydney?
Currently, September is the cheapest month in which you can book a flight from Idaho to Sydney (average of $1,340). Flying from Idaho to Sydney in July is currently the most expensive (average of $2,202). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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How does Cheapflights help users find flights from Idaho to Sydney?

Cheapflights makes it easy to find Idaho to Sydney flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Idaho to Sydney?

Cheapflights helps you find that perfect flight to Sydney from Idaho by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Idaho to Sydney with no change fees?

Certainly. Search results for flights to Sydney from Idaho shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Idaho to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Idaho today and book when prices fit your budget.

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Cheap flights from Idaho to Sydney from $717

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Idaho to Sydney

Cheapest flights from Idaho to SydneyExplore the most affordable flight options available from Idaho to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 December 2025.

Explore the most affordable flight options available from Idaho to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 December 2025.

Find flight deals from Idaho to Sydney

Keep the following information in mind while searching for Idaho to Sydney flight deals. Data was last updated 5 December 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho to Sydney that are best for you.

Best time to book a flight from Idaho to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Idaho with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Sydney

What is the cheapest month to book a flight from Idaho to Sydney?

Related info for your journey

Find useful and relevant information for your journey from Idaho to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Sydney from Idaho?

How long is the flight from Idaho to Sydney?

Can I find deals for flights from Idaho to Sydney that include hotel bookings?

How can I find direct flights from Idaho to Sydney?

Can I find deals for business class flights from Idaho to Sydney?

What is the cheapest month to book a flight from Idaho to Sydney?

Travelling to a place near Sydney?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Idaho to Sydney?

Why should you use Cheapflights to find cheap flight tickets from Idaho to Sydney?

Can Cheapflights find flights from Idaho to Sydney with no change fees?

Can Cheapflights notify me if prices for flights from Idaho to Sydney become cheaper?

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Cheapest flights from Idaho to Sydney
Explore the most affordable flight options available from Idaho to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 December 2025.