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Idaho

$730+ Cheap flights from Sydney (SYD) to Idaho

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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BOI
Sep 9 — Sep 161
Wed 9/9
Wed 9/16
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 August 10, 2026.

This Aunt Betty deal was found by Cheapflights users on 8/8. 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.
Tue 8/115:50 pm -
1 stop20h 55m
Thu 9/106:47 pm -
1 stop20h 43m
Deal found 8/8$1,016
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Mon 8/109:30 am -
2 stops29h 05m
Mon 9/711:52 am -
1 stop27h 03m
Deal found 8/8$1,018
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Mon 8/1010:20 am -
2 stops28h 15m
Fri 9/112:41 pm -
2 stops24h 14m
Deal found 8/8$1,067
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Sun 8/910:20 am -
1 stop18h 48m
Sat 9/127:05 pm -
1 stop19h 50m
Deal found 8/8$1,117
This Delta deal was found by Cheapflights users on 8/7. 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 9/219:15 am -
2 stops24h 04m
Mon 9/284:00 pm -
1 stop22h 50m
Deal found 8/7$1,172
This Trip.com deal was found by Cheapflights users on 8/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:30 am -
1 stop19h 03m
Thu 10/17:05 am -
1 stop31h 55m
Deal found 8/10$1,254
This Air Canada deal was found by Cheapflights users on 8/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:20 am -
2 stops22h 11m
Mon 8/316:30 am -
2 stops32h 50m
Deal found 8/6$1,313
This Air Canada deal was found by Cheapflights users on 8/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:20 am -
2 stops40h 15m
Sat 8/295:00 am -
2 stops34h 20m
Deal found 8/7$1,360
This Mytrip deal was found by Cheapflights users on 8/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:20 am -
2 stops40h 14m
Thu 10/12:44 pm -
2 stops24h 36m
Deal found 8/10$1,393
This American Airlines deal was found by Cheapflights users on 8/6. 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.
Thu 8/279:10 am -
2 stops44h 14m
Mon 8/312:49 pm -
1 stop24h 06m
Deal found 8/6$1,478

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 August 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,172
(Delta)

One-way from

$730
(Delta)
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
One-way flight from Sydney Kingsford Smith to Idaho
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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 August 10, 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 Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Mon 9/21

9:15 am-5:19 pm

2 stops24h 04m

Boise Air Term. Gowen Fld

Mon 9/28

4:00 pm-6:50 am

1 stop22h 50m

$1,172

SydneyBoise

SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Thu 9/24

9:30 am-12:33 pm

1 stop19h 03m

Boise Air Term. Gowen Fld

Thu 10/1

7:05 am-7:00 am

1 stop31h 55m

$1,254

SydneyBoise

SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Thu 8/27

9:20 am-9:35 am

2 stops40h 15m

Boise Air Term. Gowen Fld

Mon 8/31

5:00 am-7:20 am

2 stops34h 20m

$1,315

SydneyBoise

SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Tue 8/25

9:20 am-9:35 am

2 stops40h 15m

Boise Air Term. Gowen Fld

Sat 8/29

5:00 am-7:20 am

2 stops34h 20m

$1,360

SydneyBoise

SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Thu 9/24

9:20 am-9:34 am

2 stops40h 14m

Boise Air Term. Gowen Fld

Thu 10/1

2:44 pm-7:20 am

2 stops24h 36m

$1,393

SydneyBoise

SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Thu 8/27

9:10 am-1:24 pm

2 stops44h 14m

Boise Air Term. Gowen Fld

Mon 8/31

2:49 pm-6:55 am

1 stop24h 06m

$1,478

SydneyBoise

SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Tue 8/25

9:10 am-4:49 pm

2 stops47h 39m

Boise Air Term. Gowen Fld

Sat 8/29

12:12 pm-6:55 am

1 stop26h 43m

$1,483

SydneyBoise

SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Thu 8/27

10:20 am-7:24 pm

1 stop25h 04m

Boise Air Term. Gowen Fld

Mon 8/31

11:52 am-6:55 am

1 stop27h 03m

$1,969

SydneyBoise

SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Tue 8/25

10:20 am-9:37 pm

2 stops27h 17m

Boise Air Term. Gowen Fld

Sat 8/29

12:24 pm-6:55 am

2 stops50h 31m

$1,977
Cheapest one-way
Quickest one-way

SydneyBoise

SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld

SYDBOI

Sydney Kingsford Smith

Mon 9/21

9:15 am-11:58 pm

2 stops30h 43m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/7

Showing 1-10 of 11 resultsSorted by cheapest first
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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 $1,172, Delta can have you in Idaho from Sydney in 24h 04m. 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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