Find flights
When to book
Airlines
FAQs

Cheap flights from Idaho to Sydney from $1,319

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Idaho to Sydney

Keep the following information in mind while searching for Idaho to Sydney flight deals. Data was last updated 13 June 2025.

Round-trip from

$1,319

Popular in

December

Cheapest in

May

Average price

$2,083
Qantas Airways
  • Qantas Airways
  • 1/11-8/11
  • 2 total stops
  • 49h 49m total
  • Idaho to Sydney
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($1,003 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($257 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Idaho to Sydney

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 13 June 2025.

Sat 1/1114:37GEG - SYD
1 stop24h 23mQantas Airways
Sat 8/1114:20SYD - GEG
1 stop25h 26mQantas Airways
Deal found 12/6$1,319
Thu 31/718:49GEG - SYD
1 stop19h 41mMultiple Airlines
Sat 16/817:45SYD - GEG
1 stop21h 40mMultiple Airlines
Deal found 11/6$1,322
Thu 31/705:30GEG - SYD
2 stops32h 30mUnited Airlines
Sat 16/809:30SYD - GEG
2 stops28h 33mUnited Airlines
Deal found 12/6$1,352
Sat 26/715:35BOI - SYD
1 stop23h 20mAmerican Airlines
Sat 2/809:10SYD - BOI
2 stops29h 16mAmerican Airlines
Deal found 11/6$1,449
Thu 31/714:36GEG - SYD
1 stop22h 59mDelta
Sat 16/809:25SYD - GEG
1 stop21h 23mDelta
Deal found 10/6$1,504
Thu 13/1108:08BOI - SYD
1 stop29h 17mAlaska Airlines
Mon 17/1117:25SYD - BOI
1 stop23h 37mAlaska Airlines
Deal found 10/6$1,900
Sat 26/708:18BOI - SYD
1 stop31h 12mMultiple Airlines
Sat 2/817:45SYD - BOI
1 stop21h 09mMultiple Airlines
Deal found 11/6$2,046
Mon 16/615:29GEG - SYD
1 stop22h 26mAir New Zealand
Wed 18/610:20SYD - GEG
1 stop21h 27mAir New Zealand
Deal found 12/6$2,068
Tue 30/1210:40BOI - SYD
1 stop28h 35mUnited Airlines
Sun 15/214:00SYD - BOI
1 stop25h 08mUnited Airlines
Deal found 11/6$2,204
Thu 13/1106:15BOI - SYD
3 stops33h 20mAir Canada
Mon 17/1111:20SYD - BOI
2 stops28h 01mAir Canada
Deal found 10/6$3,035
Sat 1/1105:10GEG - SYD
2 stops33h 25mAir Canada
Sat 8/1111:20SYD - GEG
3 stops44h 25mAir Canada
Deal found 12/6$3,055
Tue 30/1219:00BOI - SYD
3 stops28h 40mAir Tahiti Nui
Sun 15/208:55SYD - BOI
2 stops32h 04mAir Tahiti Nui
Deal found 11/6$3,515

Cheapflights 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, Cheapflights users made 647,157 searches. Data last updated 13 June 2025.
Use the filters below to find and compare flights from Idaho to Sydney that are best for you.

Fly from

Idaho

Fly to

Sydney

Route

Depart

Return

Price

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 1/11

14:37-09:00

1 stop24h 23m

Sydney Kingsford Smith

Sat 8/11

14:20-20:46

1 stop25h 26m

$1,319

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 31/7

18:49-07:30

1 stop19h 41m

Sydney Kingsford Smith

Sat 16/8

17:45-22:25

1 stop21h 40m

$1,322

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 31/7

05:30-07:00

2 stops32h 30m

Sydney Kingsford Smith

Sat 16/8

09:30-21:03

2 stops28h 33m

$1,352

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 26/7

15:35-06:55

1 stop23h 20m

Sydney Kingsford Smith

Sat 2/8

09:10-22:26

2 stops29h 16m

$1,449

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 31/7

14:36-06:35

1 stop22h 59m

Sydney Kingsford Smith

Sat 16/8

09:25-13:48

1 stop21h 23m

$1,504

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 13/11

08:08-07:25

1 stop29h 17m

Sydney Kingsford Smith

Mon 17/11

17:25-23:02

1 stop23h 37m

$1,900

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 26/7

08:18-07:30

1 stop31h 12m

Sydney Kingsford Smith

Sat 2/8

17:45-22:54

1 stop21h 09m

$2,046

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 27/7

19:15-06:55

1 stop19h 40m

Sydney Kingsford Smith

Sun 3/8

10:20-19:11

1 stop24h 51m

$2,320

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 13/11

06:15-09:35

3 stops33h 20m

Sydney Kingsford Smith

Mon 17/11

11:20-21:21

2 stops28h 01m

$3,035

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 1/11

05:10-08:35

2 stops33h 25m

Sydney Kingsford Smith

Sat 8/11

11:20-12:45

3 stops44h 25m

$3,055

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 15 results
1
2

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, May is the cheapest month in which you can book a flight from Idaho to Sydney (average of $129). Flying from Idaho to Sydney in October is currently the most expensive (average of $171). 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.

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

Find hourly flight availability from Idaho to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

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.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

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.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 13 June 2025.
See what other customers who have flown with Air Tahiti Nui, Alaska Airlines and Delta from Idaho to Sydney have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Crew

9.0

Overall

8.7

Comfort

8.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.7
Very Good
64 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Crew

9.0

Overall

8.7

Comfort

8.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Alaska Airlines
8.0
Very Good
10,000 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Crew

9.0

Overall

8.7

Comfort

8.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Delta
8.0
Very Good
7,950 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Crew

9.0

Overall

8.7

Comfort

8.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air New Zealand
8.0
Very Good
483 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Crew

9.0

Overall

8.7

Comfort

8.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Qantas Airways
7.5
Good
854 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Entertainment

7.3

Crew

9.0

Overall

8.7

Comfort

8.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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?

    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.

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

    Currently, May is the cheapest month in which you can book a flight from Idaho to Sydney (average of $129). Flying from Idaho to Sydney in October is currently the most expensive (average of $171). 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

Travelling to a place near Idaho?

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

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.
Los Angeles to Sydney flights
San Francisco to Sydney flights
John F Kennedy Intl to Sydney flights
Dallas/Fort Worth to Sydney flights
Newark to Sydney flights
Seattle to Sydney flights
Dulles Intl to Sydney flights
O'Hare Intl to Sydney flights
Reagan-National to Sydney flights
San Jose to Sydney flights
Baltimore to Sydney flights
Hobby to Sydney flights
Honolulu to Sydney flights
Boston to Sydney flights
Oakland to Sydney flights
Atlanta to Sydney flights
George Bush Intcntl to Sydney flights
Detroit to Sydney flights
Sky Harbor Intl to Sydney flights
Denver to Sydney flights
Midway to Sydney flights
Minneapolis to Sydney flights
Miami to Sydney flights
San Diego to Sydney flights
Orlando to Sydney flights
Raleigh to Sydney flights
Philadelphia to Sydney flights
Portland to Sydney flights
Salt Lake City to Sydney flights
Tampa to Sydney flights
Austin to Sydney flights
Fort Lauderdale to Sydney flights
Indianapolis to Sydney flights
Charlotte to Sydney flights
Nashville to Sydney flights
Love Field to Sydney flights
Sacramento to Sydney flights
Birmingham to Sydney flights
Las Vegas to Sydney flights
St. Louis to Sydney flights
Memphis to Sydney flights
Cincinnati to Sydney flights
Kansas City to Sydney flights
Pittsburgh to Sydney flights

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?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights