$606+ 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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BOI
Oct 31 — Nov 71
Round-trip
1 adult, Economy
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Find cheap flights from Sydney to Idaho with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Sydney to Idaho
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Best
Last-minute
One-way
Cheapest flights from Sydney to IdahoExplore 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 October 1, 2026.
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 October 1, 2026.
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Fri 11/611:10 am -
2 stops44h 13m
Tue 11/102:41 pm -
1 stop22h 14m
Deal found 9/29![American Airlines logo]()
$1,161
This Air Canada deal was found by Cheapflights users on 9/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:20 am -
2 stops44h 25m
Tue 11/105:44 pm -
2 stops45h 51m
Deal found 9/30![Air Canada logo]()
$1,344
This United Airlines deal was found by Cheapflights users on 9/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:20 am -
2 stops26h 34m
Sat 10/35:51 pm -
2 stops45h 04m
Deal found 9/30![United Airlines logo]()
$1,956
This United Airlines deal was found by Cheapflights users on 9/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:50 am -
1 stop17h 29m
Tue 11/107:10 pm -
1 stop20h 10m
Deal found 9/30![United Airlines logo]()
$2,000
This Priceline deal was found by Cheapflights users on 9/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm -
2 stops48h 06m
Sat 10/36:09 am -
2 stops32h 01m
Deal found 9/30![Multiple Airlines logo]()
$2,455
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:50 pm -
2 stops33h 55m
Sat 10/312:15 pm -
1 stop25h 40m
Deal found 9/30![American Airlines logo]()
$2,674
Best flights from Sydney to IdahoDiscover carefully curated flight deals from Sydney to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 1, 2026.
Discover carefully curated flight deals from Sydney to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 1, 2026.
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Fri 11/611:10 am -
2 stops44h 13m
Tue 11/102:41 pm -
1 stop22h 14m
Deal found 9/29![American Airlines logo]()
$1,161
This United Airlines deal was found by Cheapflights users on 9/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:50 am -
1 stop17h 29m
Tue 11/107:10 pm -
1 stop20h 10m
Deal found 9/30![United Airlines logo]()
$2,000
Last-minute flights from Sydney to IdahoDiscover last-minute flight deals from Sydney to Idaho. Data last updated October 1, 2026 and is based on user searches.
Discover last-minute flight deals from Sydney to Idaho. Data last updated October 1, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:20 am -
2 stops26h 34m
Sat 10/35:51 pm -
2 stops45h 04m
Deal found 9/30![United Airlines logo]()
$1,956
This Priceline deal was found by Cheapflights users on 9/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm -
2 stops48h 06m
Sat 10/36:09 am -
2 stops32h 01m
Deal found 9/30![Multiple Airlines logo]()
$2,455
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:50 pm -
2 stops33h 55m
Sat 10/312:15 pm -
1 stop25h 40m
Deal found 9/30![American Airlines logo]()
$2,674
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Fri 11/611:10 am -
2 stops44h 13m
Tue 11/102:41 pm -
1 stop22h 14m
Deal found 9/29![American Airlines logo]()
$1,161
This Air Canada deal was found by Cheapflights users on 9/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:20 am -
2 stops44h 25m
Tue 11/105:44 pm -
2 stops45h 51m
Deal found 9/30![Air Canada logo]()
$1,344
This United Airlines deal was found by Cheapflights users on 9/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:50 am -
1 stop17h 29m
Tue 11/107:10 pm -
1 stop20h 10m
Deal found 9/30![United Airlines logo]()
$2,000
One-way flights from Sydney to IdahoSearch for one-way flight options from Sydney to Idaho. Find affordable one-way fares based on user searches. Data last updated October 1, 2026.
Search for one-way flight options from Sydney to Idaho. Find affordable one-way fares based on user searches. Data last updated October 1, 2026.
This Travelocity deal was found by Cheapflights users on 9/27. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/1911:20 am -
2 stops28h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Air Canada logo]()
$606
This Justfly.com deal was found by Cheapflights users on 9/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2011:20 am -
2 stops41h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Air Canada logo]()
$645
This Justfly.com deal was found by Cheapflights users on 9/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2211:20 am -
2 stops41h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Air Canada logo]()
$691
This Delta deal was found by Cheapflights users on 9/27. 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.
Thu 1/2110:40 am -
1 stop30h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Delta logo]()
$720
This United Airlines deal was found by Cheapflights users on 9/27. 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 1/2211:50 am -
1 stop23h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![United Airlines logo]()
$779
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/198:20 pm -
3 stops43h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$808
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/228:20 pm -
3 stops34h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$816
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/202:55 pm -
3 stops23h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$840
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 October 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,010 (United Airlines) |
One-way from | $606 (Travelocity) |
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 7,457,451 searches. Data last updated October 1, 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
Cheapest round-trip
SydneyBoise
SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld
SYDBOI
Sydney Kingsford Smith
Tue 1/19
11:20 am-9:35 pm
2 stops28h 15m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$606
SydneyBoise
SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld
SYDBOI
Sydney Kingsford Smith
Wed 1/20
10:40 am-11:08 pm
1 stop30h 28m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$720
SydneyBoise
SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld
SYDBOI
Sydney Kingsford Smith
Tue 1/19
1:20 pm-11:07 am
1 stop39h 47m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$720
SydneyBoise
SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld
SYDBOI
Sydney Kingsford Smith
Thu 1/21
10:40 am-11:08 pm
1 stop30h 28m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$720
Quickest round-trip
SydneyBoise
SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld
SYDBOI
Sydney Kingsford Smith
Fri 1/22
11:50 am-4:54 pm
1 stop23h 04m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$779
SydneyBoise
SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld
SYDBOI
Sydney Kingsford Smith
Tue 1/19
8:20 pm-9:42 pm
3 stops43h 22m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$808
SydneyBoise
SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld
SYDBOI
Sydney Kingsford Smith
Fri 1/22
8:20 pm-12:24 pm
3 stops34h 04m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$816
SydneyBoise
SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld
SYDBOI
Sydney Kingsford Smith
Fri 11/6
11:10 am-1:23 pm
2 stops44h 13m
Boise Air Term. Gowen Fld
Tue 11/10
2:41 pm-6:55 am
1 stop22h 14m
$1,161
SydneyBoise
SYD Sydney Kingsford Smith - BOI Boise Air Term. Gowen Fld
SYDBOI
Sydney Kingsford Smith
Fri 11/6
11:50 am-11:19 am
1 stop17h 29m
Boise Air Term. Gowen Fld
Tue 11/10
7:10 pm-9:20 am
1 stop20h 10m
$2,000
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.
SYD-BOI
SYD-IDA
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
SYD-USID
SYD-BOI
SYD-IDA
No data available for this route at this time. Please check back soon.
Related info for your journey
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