How long is the flight from Idaho to Sydney?

Departing from Idaho to Sydney will take you 19h 25m. Airlines will cover a distance of 12796 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops. 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.

$601+ 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 30 December 2025.

Tue 30/1208:20BOI - SYD

1 stop28h 30mDelta

Sun 15/210:40SYD - BOI

2 stops19h 29mDelta

Deal found 30/12$1,905

Tue 30/1214:10BOI - SYD

1 stop22h 10mUnited Airlines

Sun 15/212:10SYD - BOI

1 stop27h 01mUnited Airlines

Deal found 30/12$2,482

Tue 30/1208:07BOI - SYD

3 stops39h 08mMultiple Airlines

Sun 15/222:20SYD - BOI

2 stops42h 02mMultiple Airlines

Deal found 30/12$2,657

Mon 29/1207:00BOI - SYD

1 stop32h 05mUnited Airlines

Wed 31/1211:30SYD - BOI

2 stops52h 00mUnited Airlines

Deal found 28/12$2,702

Mon 29/1207:15BOI - SYD

1 stop30h 10mMultiple Airlines

Wed 31/1217:50SYD - BOI

3 stops47h 12mMultiple Airlines

Deal found 28/12$3,045

Tue 30/1208:30BOI - SYD

1 stop27h 50mUnited Airlines

Tue 6/114:00SYD - BOI

1 stop25h 25mUnited Airlines

Deal found 29/12$3,122

Tue 30/1214:10BOI - SYD

2 stops28h 30mAir New Zealand

Mon 5/119:15SYD - BOI

2 stops42h 36mAir New Zealand

Deal found 30/12$3,216

Tue 30/1214:10BOI - SYD

1 stop22h 10mUnited Airlines

Mon 5/114:00SYD - BOI

1 stop20h 08mUnited Airlines

Deal found 30/12$3,528

Tue 30/1208:07BOI - SYD

3 stops38h 23mMultiple Airlines

Tue 6/122:20SYD - BOI

2 stops42h 42mMultiple Airlines

Deal found 29/12$4,447

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 30 December 2025.

Tue 3/315:45GEG - SYD

1 stop19h 25mQantas Airways

Wed 11/311:20SYD - GEG

1 stop24h 23mQantas Airways

Deal found 28/12$1,275

Tue 3/315:45GEG - SYD

1 stop19h 25mMultiple Airlines

Tue 10/311:20SYD - GEG

1 stop24h 23mMultiple Airlines

Deal found 29/12$1,295

Sat 14/212:38GEG - SYD

1 stop25h 37mUnited Airlines

Sat 21/211:50SYD - GEG

2 stops28h 27mUnited Airlines

Deal found 28/12$1,320

Wed 11/210:15BOI - SYD

2 stops28h 30mAir New Zealand

Wed 18/213:55SYD - BOI

2 stops27h 05mAir New Zealand

Deal found 28/12$1,850

Fri 27/307:30BOI - SYD

2 stops31h 05mDelta

Sun 5/409:15SYD - BOI

2 stops22h 45mDelta

Deal found 30/12$1,905

Wed 15/418:12GEG - SYD

1 stop19h 53mMultiple Airlines

Fri 24/417:50SYD - GEG

1 stop21h 59mMultiple Airlines

Deal found 28/12$1,319

Wed 15/416:01GEG - SYD

2 stops45h 54mUnited Airlines

Fri 24/410:20SYD - GEG

1 stop18h 23mUnited Airlines

Deal found 28/12$1,340

Tue 10/216:10GEG - SYD

2 stops67h 50mUnited Airlines

Tue 24/212:10SYD - GEG

2 stops28h 07mUnited Airlines

Deal found 28/12$1,369

Tue 3/313:44GEG - SYD

2 stops24h 31mUnited Airlines

Wed 11/312:10SYD - GEG

1 stop17h 37mUnited Airlines

Deal found 28/12$1,372

Fri 27/319:05BOI - SYD

1 stop20h 00mMultiple Airlines

Sun 5/417:50SYD - BOI

1 stop34h 35mMultiple Airlines

Deal found 30/12$1,729

Mon 16/308:00BOI - SYD

2 stops30h 25mDelta

Mon 23/313:15SYD - BOI

1 stop25h 21mDelta

Deal found 28/12$1,905

Fri 13/207:30BOI - SYD

2 stops31h 00mDelta

Fri 20/210:40SYD - BOI

2 stops25h 09mDelta

Deal found 30/12$1,905

Wed 11/212:46BOI - SYD

2 stops24h 39mMultiple Airlines

Wed 18/217:45SYD - BOI

1 stop23h 15mMultiple Airlines

Deal found 28/12$1,763

Fri 27/307:30BOI - SYD

2 stops31h 05mDelta

Mon 6/409:15SYD - BOI

2 stops22h 45mDelta

Deal found 30/12$1,905

Wed 18/213:44BOI - SYD

1 stop25h 31mUnited Airlines

Sun 22/214:00SYD - BOI

1 stop25h 11mUnited Airlines

Deal found 27/12$2,020

Last-minute flights from Idaho to Sydney
Discover last-minute flight deals from Idaho to Sydney. Data last updated 30 December 2025 and is based on user searches.

Mon 29/1207:00BOI - SYD

1 stop32h 05mUnited Airlines

Wed 31/1211:30SYD - BOI

2 stops52h 00mUnited Airlines

Deal found 28/12$2,702

Mon 29/1207:15BOI - SYD

1 stop30h 10mMultiple Airlines

Wed 31/1217:50SYD - BOI

3 stops47h 12mMultiple Airlines

Deal found 28/12$3,045

Tue 30/1208:20BOI - SYD

1 stop28h 30mDelta

Sun 15/210:40SYD - BOI

2 stops19h 29mDelta

Deal found 30/12$1,905

Tue 30/1214:10BOI - SYD

1 stop22h 10mUnited Airlines

Sun 15/212:10SYD - BOI

1 stop27h 01mUnited Airlines

Deal found 30/12$2,482

Tue 30/1208:07BOI - SYD

3 stops39h 08mMultiple Airlines

Sun 15/222:20SYD - BOI

2 stops42h 02mMultiple Airlines

Deal found 30/12$2,657

Tue 30/1208:30BOI - SYD

1 stop27h 50mUnited Airlines

Tue 6/114:00SYD - BOI

1 stop25h 25mUnited Airlines

Deal found 29/12$3,122

Tue 30/1214:10BOI - SYD

2 stops28h 30mAir New Zealand

Mon 5/119:15SYD - BOI

2 stops42h 36mAir New Zealand

Deal found 30/12$3,216

Mon 26/112:24GEG - SYD

1 stop25h 51mUnited Airlines

Sun 8/214:00SYD - GEG

1 stop24h 16mUnited Airlines

Deal found 27/12$1,372

Mon 26/106:50GEG - SYD

1 stop29h 35mMultiple Airlines

Mon 9/217:45SYD - GEG

1 stop23h 45mMultiple Airlines

Deal found 27/12$2,506

Mon 26/106:00GEG - SYD

2 stops31h 35mMultiple Airlines

Sun 8/208:30SYD - GEG

3 stops25h 55mMultiple Airlines

Deal found 27/12$2,566

Tue 27/106:29GEG - SYD

1 stop29h 21mDelta

Tue 3/214:15SYD - GEG

1 stop26h 15mDelta

Deal found 28/12$1,468

Tue 27/116:59GEG - SYD

3 stops43h 46mMultiple Airlines

Tue 3/222:20SYD - GEG

2 stops36h 05mMultiple Airlines

Deal found 28/12$2,485

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 30 December 2025.

Tue 24/318:12GEG - SYD

1 stop20h 48mMultiple Airlines

Deal found 29/12$601

Mon 23/318:12GEG - SYD

1 stop20h 48mQantas Airways

Deal found 29/12$616

Mon 23/315:10GEG - SYD

2 stops23h 50mAmerican Airlines

Deal found 29/12$624

Tue 20/105:00GEG - SYD

2 stops30h 20mUnited Airlines

Deal found 27/12$731

Mon 23/314:47GEG - SYD

3 stops49h 03mMultiple Airlines

Deal found 29/12$892

Tue 20/109:05GEG - SYD

3 stops39h 40mMultiple Airlines

Deal found 27/12$1,229

Tue 20/106:00GEG - SYD

1 stop29h 55mQantas Airways

Deal found 27/12$1,975

Find flight deals from Idaho to Sydney

Round-trip from	$1,275
One-way from	$601
Popular in	December
Cheapest in	September
Average price	$2,177

Qantas Airways
3/3-11/3
2 total stops
43h 48m total
Idaho to Sydney

Search Deals

24/3
1 total stop
20h 48m total
Idaho to Sydney

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($316 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($49 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

Tue 3/3

15:45-06:10

1 stop19h 25m

Sydney Kingsford Smith

Wed 11/3

11:20-17:43

1 stop24h 23m

$1,275

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

15:45-06:10

1 stop19h 25m

Sydney Kingsford Smith

Tue 10/3

11:20-17:43

1 stop24h 23m

$1,295

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Wed 15/4

18:12-07:05

1 stop19h 53m

Sydney Kingsford Smith

Fri 24/4

17:50-22:49

1 stop21h 59m

$1,319

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 14/2

12:38-09:15

1 stop25h 37m

Sydney Kingsford Smith

Sat 21/2

11:50-21:17

2 stops28h 27m

$1,320

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Wed 15/4

16:01-06:55

2 stops45h 54m

Sydney Kingsford Smith

Fri 24/4

10:20-11:43

1 stop18h 23m

$1,340

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 10/2

16:10-07:00

2 stops67h 50m

Sydney Kingsford Smith

Tue 24/2

12:10-21:17

2 stops28h 07m

$1,369

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

13:44-09:15

2 stops24h 31m

Sydney Kingsford Smith

Wed 11/3

12:10-11:47

1 stop17h 37m

$1,372

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Fri 27/3

19:05-08:05

1 stop20h 00m

Sydney Kingsford Smith

Sun 5/4

17:50-12:25

1 stop34h 35m

$1,729

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 11/2

12:46-07:25

2 stops24h 39m

Sydney Kingsford Smith

Wed 18/2

17:45-23:00

1 stop23h 15m

$1,763

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 11/2

10:15-08:45

2 stops28h 30m

Sydney Kingsford Smith

Wed 18/2

13:55-23:00

2 stops27h 05m

$1,850

Flights are sorted by cheapest return flights first.

Deals found on 29/12

Showing 1-10 of 23 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 $1,322). Flying from Idaho to Sydney in July is currently the most expensive (average of $2,172). 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 19h 25m. Airlines will cover a distance of 12796 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
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 $1,322). Flying from Idaho to Sydney in July is currently the most expensive (average of $2,172). 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 $601

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 24/3. 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 30 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 30 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 30 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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Book with flexibility

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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 30 December 2025.