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$1,113+ Cheap flights from Sydney (SYD) to Idaho

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BOI
Jun 3 — Jun 101
Wed 6/3
Wed 6/10
1 adult, Economy
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Cheap flight deals from Sydney to Idaho

Cheapest flights from Sydney to Idaho
Explore the most affordable flight options available from Sydney to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 4, 2026.

This American Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/259:10 am
SYD
-
BOI
2 stops23h 59m
American Airlines
Mon 6/11:59 pm
BOI
-
SYD
2 stops25h 06m
American Airlines
Deal found 5/3$1,113
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/259:15 am
SYD
-
BOI
1 stop29h 43m
Delta
Mon 6/110:50 am
BOI
-
SYD
2 stops28h 00m
Delta
Deal found 4/30$1,117
This Aunt Betty deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/148:45 pm
SYD
-
BOI
2 stops29h 27m
Multiple Airlines
Sun 6/216:13 pm
BOI
-
SYD
2 stops32h 37m
Multiple Airlines
Deal found 4/29$1,451
This United Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:30 am
SYD
-
BOI
2 stops29h 16m
United Airlines
Thu 10/87:05 pm
BOI
-
SYD
1 stop19h 50m
United Airlines
Deal found 5/1$1,674
This Delta deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:15 am
SYD
-
BOI
1 stop21h 46m
Delta
Thu 10/87:15 am
BOI
-
SYD
1 stop31h 35m
Delta
Deal found 5/1$1,882
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/299:10 am
SYD
-
BOI
2 stops44h 17m
American Airlines
Sun 8/23:37 pm
BOI
-
SYD
1 stop23h 18m
American Airlines
Deal found 4/29$1,891

Find flight deals from Sydney to Idaho

Keep the following information in mind while searching for Sydney to Idaho flight deals. Data was last updated May 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,113
(American Airlines)
Provider with most accurate pricing for Sydney Kingsford Smith-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Boise Air Term. Gowen Fld flights.
Search Deals
From Sydney Kingsford Smith to Idaho
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sydney to Idaho 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 2,558,603 searches. Data last updated May 4, 2026.
Use the filters below to find and compare flights from Sydney to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Mon 5/25

9:10 am-5:09 pm

2 stops23h 59m

Boise Air Term. Gowen Fld

Mon 6/1

1:59 pm-7:05 am

2 stops25h 06m

$1,113

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Mon 5/25

9:15 am-10:58 pm

1 stop29h 43m

Boise Air Term. Gowen Fld

Mon 6/1

10:50 am-6:50 am

2 stops28h 00m

$1,117

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Fri 9/18

9:30 am-10:46 pm

2 stops29h 16m

Boise Air Term. Gowen Fld

Thu 10/8

7:05 pm-7:55 am

1 stop19h 50m

$1,674

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Sun 6/14

9:10 am-10:45 pm

1 stop29h 35m

Boise Air Term. Gowen Fld

Sun 6/21

8:03 am-7:05 am

1 stop31h 02m

$1,686

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Fri 9/18

9:15 am-3:01 pm

1 stop21h 46m

Boise Air Term. Gowen Fld

Thu 10/8

7:15 am-7:50 am

1 stop31h 35m

$1,882

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Wed 7/29

10:20 am-7:25 pm

1 stop25h 05m

Boise Air Term. Gowen Fld

Sun 8/2

2:05 pm-6:55 am

1 stop24h 50m

$1,997

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Sorted by cheapest first

Best time to book a flight from Sydney to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Sydney with our price prediction graph.
Estimated round-trip 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 Sydney to Idaho
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Idaho. 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 from for flights from Sydney to Idaho?

    Located just 4.6 mi from the city center, Sydney Kingsford Smith (SYD) is the airport most travelers will use when flying to Idaho from Sydney.

  • How long is the flight from Sydney to Idaho?

    For as low as $1,113, American Airlines can have you in Idaho from Sydney in 23h 59m. The distance between Sydney and Idaho is about 7894 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Sydney to Idaho?

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

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

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

See more FAQs

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