$575+ Cheap flights from Idaho to Sydney (SYD)
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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
Oct 30 — Nov 61
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Sydney 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Idaho to Sydney
Cheapest
Best
Last-minute
One-way
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 September 30, 2026.
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 September 30, 2026.
This oojo deal was found by Cheapflights users on 9/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/188:57 am -
1 stop28h 28m
Mon 11/211:15 am -
1 stop25h 15m
Deal found 9/26![Multiple Airlines logo]()
$1,130
This Qantas Airways deal was found by Cheapflights users on 9/28. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:57 pm -
1 stop21h 03m
Tue 11/311:15 am -
1 stop18h 53m
Deal found 9/28![Multiple Airlines logo]()
$1,133
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.
Wed 11/114:45 pm -
1 stop21h 45m
Wed 11/1810:40 am -
1 stop22h 18m
Deal found 9/27![Delta logo]()
$1,138
This American Airlines deal was found by Cheapflights users on 9/26. 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.
Sun 10/182:02 pm -
2 stops24h 28m
Mon 11/211:10 am -
2 stops26h 14m
Deal found 9/26![American Airlines logo]()
$1,139
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.
Wed 11/1112:31 pm -
2 stops26h 49m
Wed 11/1811:20 am -
2 stops24h 43m
Deal found 9/27![United Airlines logo]()
$1,142
This oojo deal was found by Cheapflights users on 9/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:30 pm -
2 stops43h 05m
Thu 11/511:50 am -
2 stops27h 43m
Deal found 9/25![Air New Zealand logo]()
$1,242
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/257:09 am -
1 stop29h 16m
Sat 1/2311:20 am -
2 stops41h 47m
Deal found 9/27![Multiple Airlines logo]()
$1,368
This Expedia deal was found by Cheapflights users on 9/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:30 pm -
1 stop19h 30m
Thu 11/511:20 am -
2 stops23h 22m
Deal found 9/25![Multiple Airlines logo]()
$1,375
This Delta deal was found by Cheapflights users on 9/25. 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 11/24:00 pm -
1 stop22h 30m
Thu 11/510:40 am -
1 stop22h 07m
Deal found 9/25![Delta logo]()
$1,425
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/299:59 pm -
2 stops27h 46m
Sat 12/59:40 pm -
2 stops20h 19m
Deal found 9/29![Multiple Airlines logo]()
$1,458
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/257:09 am -
1 stop29h 16m
Sat 1/2311:15 am -
1 stop21h 16m
Deal found 9/27![Alaska Airlines logo]()
$1,517
This oojo deal was found by Cheapflights users on 9/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:47 pm -
1 stop20h 18m
Mon 10/56:50 pm -
1 stop21h 07m
Deal found 9/26![Qantas Airways logo]()
$1,529
Best flights from Idaho to SydneyDiscover carefully curated flight deals from Idaho to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 30, 2026.
Discover carefully curated flight deals from Idaho to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 30, 2026.
This United Airlines deal was found by Cheapflights users on 9/26. 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 10/182:44 pm -
2 stops24h 16m
Mon 11/211:50 am -
1 stop22h 52m
Deal found 9/26![United Airlines logo]()
$1,138
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.
Wed 11/114:45 pm -
1 stop21h 45m
Wed 11/1810:40 am -
1 stop22h 18m
Deal found 9/27![Delta logo]()
$1,138
This Expedia deal was found by Cheapflights users on 9/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:30 pm -
1 stop19h 30m
Thu 11/511:20 am -
2 stops23h 22m
Deal found 9/25![Multiple Airlines logo]()
$1,375
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.
Sun 11/296:44 am -
1 stop30h 11m
Sat 12/511:10 am -
2 stops26h 21m
Deal found 9/29![American Airlines logo]()
$1,539
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:00 am -
2 stops34h 35m
Thu 11/1211:20 am -
2 stops28h 12m
Deal found 9/27![Air Canada logo]()
$1,688
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Tue 10/272:51 pm -
2 stops25h 29m
Tue 11/311:50 am -
1 stop22h 52m
Deal found 9/28![United Airlines logo]()
$1,138
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.
Wed 11/112:51 pm -
2 stops24h 29m
Wed 11/1811:50 am -
1 stop22h 52m
Deal found 9/27![United Airlines logo]()
$1,138
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/158:00 am -
1 stop28h 55m
Wed 11/252:05 pm -
1 stop25h 46m
Deal found 9/29![Qantas Airways logo]()
$2,608
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/151:53 pm -
2 stops53h 07m
Wed 11/253:15 pm -
2 stops41h 54m
Deal found 9/29![Multiple Airlines logo]()
$1,629
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.
Mon 2/111:48 am -
1 stop24h 32m
Mon 3/111:50 am -
1 stop27h 25m
Deal found 9/27![United Airlines logo]()
$1,348
This United Airlines deal was found by Cheapflights users on 9/28. 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 1/2411:48 am -
1 stop27h 32m
Sun 1/3111:50 am -
1 stop21h 13m
Deal found 9/28![United Airlines logo]()
$1,398
This Qantas Airways 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:49 am -
3 stops25h 36m
Wed 11/1811:05 am -
2 stops25h 25m
Deal found 9/27![Multiple Airlines logo]()
$1,806
This United Airlines deal was found by Cheapflights users on 9/28. 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 11/812:00 pm -
1 stop27h 20m
Thu 11/1211:50 am -
2 stops27h 42m
Deal found 9/28![United Airlines logo]()
$1,572
This oojo deal was found by Cheapflights users on 9/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/11:42 pm -
1 stop23h 13m
Fri 4/3012:00 pm -
2 stops26h 39m
Deal found 9/28![Multiple Airlines logo]()
$2,029
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/151:53 pm -
2 stops22h 32m
Sat 11/282:05 pm -
1 stop25h 46m
Deal found 9/29![Multiple Airlines logo]()
$3,031
Last-minute flights from Idaho to SydneyDiscover last-minute flight deals from Idaho to Sydney. Data last updated September 30, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Sydney. Data last updated September 30, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 9/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:47 pm -
1 stop20h 18m
Mon 10/56:50 pm -
1 stop21h 07m
Deal found 9/26![Qantas Airways logo]()
$1,529
This oojo deal was found by Cheapflights users on 9/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:05 am -
2 stops31h 00m
Mon 10/56:50 pm -
1 stop21h 07m
Deal found 9/26![Multiple Airlines logo]()
$1,555
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:00 pm -
1 stop22h 50m
Mon 10/510:15 am -
1 stop21h 29m
Deal found 9/29![Delta logo]()
$1,568
This oojo deal was found by Cheapflights users on 9/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/188:57 am -
1 stop28h 28m
Mon 11/211:15 am -
1 stop25h 15m
Deal found 9/26![Multiple Airlines logo]()
$1,130
This United Airlines deal was found by Cheapflights users on 9/26. 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 10/182:44 pm -
2 stops24h 16m
Mon 11/211:50 am -
1 stop22h 52m
Deal found 9/26![United Airlines logo]()
$1,138
This American Airlines deal was found by Cheapflights users on 9/26. 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.
Sun 10/182:02 pm -
2 stops24h 28m
Mon 11/211:10 am -
2 stops26h 14m
Deal found 9/26![American Airlines logo]()
$1,139
This Qantas Airways deal was found by Cheapflights users on 9/28. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:57 pm -
1 stop21h 03m
Tue 11/311:15 am -
1 stop18h 53m
Deal found 9/28![Multiple Airlines logo]()
$1,133
One-way flights from Idaho to SydneySearch for one-way flight options from Idaho to Sydney. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
Search for one-way flight options from Idaho to Sydney. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:03 pm -
2 stops24h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Qantas Airways logo]()
$575
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:30 pm -
1 stop19h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$578
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.
Tue 11/32:41 pm -
2 stops24h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![American Airlines logo]()
$590
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:10 pm -
1 stop20h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![United Airlines logo]()
$592
This Philippine 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:05 am -
2 stops32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$858
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:05 am -
1 stop31h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Delta logo]()
$1,447
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 September 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,130 (oojo) |
One-way from | $575 (oojo) |
Popular in | December |
Cheapest in | March |
Average price | $1,223 |
Cheapflights Fare Finder
Customize 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 7,457,451 searches. Data last updated September 30, 2026.
Use the filters below to find and compare flights from Idaho to Sydney that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Tue 11/3
2:03 pm-6:25 am
2 stops22h 22m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$577
Quickest round-trip
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Tue 11/3
7:30 pm-9:00 am
1 stop19h 30m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$578
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Tue 11/3
2:41 pm-9:00 am
2 stops24h 19m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$590
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Tue 11/3
7:10 pm-9:20 am
1 stop20h 10m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$592
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Sun 10/4
7:05 am-9:00 am
2 stops32h 55m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$858
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Sun 10/18
2:44 pm-8:00 am
2 stops24h 16m
Sydney Kingsford Smith
Mon 11/2
11:50 am-4:42 pm
1 stop22h 52m
$1,138
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Wed 11/11
4:45 pm-8:30 am
1 stop21h 45m
Sydney Kingsford Smith
Wed 11/18
10:40 am-2:58 pm
1 stop22h 18m
$1,138
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Tue 10/27
2:51 pm-9:20 am
2 stops25h 29m
Sydney Kingsford Smith
Tue 11/3
11:50 am-4:42 pm
1 stop22h 52m
$1,138
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Wed 11/11
2:51 pm-9:20 am
2 stops24h 29m
Sydney Kingsford Smith
Wed 11/18
11:50 am-4:42 pm
1 stop22h 52m
$1,138
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Mon 2/1
11:48 am-6:20 am
1 stop24h 32m
Sydney Kingsford Smith
Mon 3/1
11:50 am-9:15 pm
1 stop27h 25m
$1,348
Showing 1-10 of 20 resultsSorted by cheapest first
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.
BOI-SYD
IDA-SYD
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 Idaho to Sydney
USID-SYD
BOI-SYD
IDA-SYD
What is the cheapest month to book a flight from Idaho to Sydney?
Currently, March is the cheapest month in which you can book a flight from Idaho to Sydney (average of $1,076). Flying from Idaho to Sydney in December is currently the most expensive (average of $1,828). 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.
How much does it cost to fly round-trip from Idaho to Sydney?
Airfare is below average for this route at the moment.
Idaho to Sydney flights typically cost between $1,308 and $1,358 in October.The cheapest round-trip price found within the last 5 days was $1,130 on Multiple Airlines (Oct 18-Nov 2).
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.
Traveling to a place near Sydney?
Book flights to Sydney if you plan to visit one of these locationsParramatta
Wollongong
Coogee
Manly
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.
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Complete your trip
Complete your trip to Sydney by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Sydney by cabin class
Find flights from Idaho to Sydney, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Sydney flights
Browse other Idaho and Sydney flight options. Last updated on September 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Sydney
Explore flights to Sydney departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 30, 2026.
Idaho to Sydney flights
Consider these flights traveling from Idaho to Sydney.
Top airline flying from Idaho to Sydney
Discover the top airline that operate flights from Idaho to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,214 | Average$1,381 | FlexibilityNo cancel fee | On-time69% |