$565+ Cheap flights from Idaho to Sydney (SYD)
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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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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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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 August 10, 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 August 10, 2026.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:36 pm -
2 stops24h 54m
Wed 9/239:10 am -
1 stop21h 13m
Deal found 8/7![Multiple Airlines logo]()
$1,063
This oojo deal was found by Cheapflights users on 8/9. 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.
Sat 10/243:37 pm -
2 stops44h 48m
Tue 11/1711:15 am -
1 stop20h 20m
Deal found 8/9![Multiple Airlines logo]()
$1,064
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:51 pm -
1 stop23h 14m
Wed 10/289:25 pm -
1 stop35h 57m
Deal found 8/7![Multiple Airlines logo]()
$1,070
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:02 am -
1 stop28h 18m
Wed 12/1611:50 am -
1 stop18h 34m
Deal found 8/7![United Airlines logo]()
$1,090
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:36 pm -
2 stops24h 54m
Wed 9/2312:00 pm -
2 stops24h 39m
Deal found 8/7![American Airlines logo]()
$1,091
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:45 pm -
2 stops23h 20m
Wed 10/2811:10 am -
2 stops27h 33m
Deal found 8/7![American Airlines logo]()
$1,092
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:45 pm -
2 stops24h 35m
Tue 12/1511:50 am -
1 stop18h 34m
Deal found 8/6![United Airlines logo]()
$1,094
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:33 pm -
1 stop25h 22m
Sun 9/209:30 am -
2 stops22h 36m
Deal found 8/7![United Airlines logo]()
$1,095
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.
Sat 10/177:20 pm -
2 stops42h 30m
Mon 10/269:40 am -
2 stops23h 10m
Deal found 8/7![Delta logo]()
$1,108
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:16 pm -
2 stops22h 49m
Sat 8/229:10 am -
1 stop30h 28m
Deal found 8/6![Multiple Airlines logo]()
$1,112
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/611:45 am -
2 stops25h 40m
Thu 9/175:50 pm -
1 stop21h 48m
Deal found 8/7![Multiple Airlines logo]()
$1,114
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:44 pm -
2 stops24h 36m
Mon 10/510:20 am -
2 stops40h 14m
Deal found 8/8![Air Canada logo]()
$1,315
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 August 10, 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 August 10, 2026.
This United Airlines deal was found by Cheapflights users on 8/9. 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 10/271:10 pm -
1 stop26h 10m
Tue 11/1711:50 am -
1 stop25h 51m
Deal found 8/9![United Airlines logo]()
$1,090
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 9/74:16 pm -
1 stop21h 34m
Tue 9/159:15 am -
1 stop23h 24m
Deal found 8/7![Delta logo]()
$1,090
This Qantas Airways deal was found by Cheapflights users on 8/5. 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.
Sun 11/85:57 pm -
2 stops26h 23m
Wed 11/1111:05 am -
2 stops20h 35m
Deal found 8/5![Qantas Airways logo]()
$1,465
This flugladen.de deal was found by Cheapflights users on 8/9. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:05 am -
1 stop32h 00m
Wed 9/169:10 am -
1 stop29h 50m
Deal found 8/9![Multiple Airlines logo]()
$1,480
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.
Wed 12/27:02 am -
1 stop28h 18m
Tue 12/1511:50 am -
1 stop18h 34m
Deal found 8/8![United Airlines logo]()
$1,090
This Delta deal was found by Cheapflights users on 8/9. 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.
Sat 10/247:20 pm -
2 stops42h 10m
Mon 11/1610:40 am -
2 stops20h 35m
Deal found 8/9![Delta logo]()
$1,108
This United Airlines deal was found by Cheapflights users on 8/9. 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 10/271:49 pm -
2 stops24h 16m
Mon 11/1611:50 am -
1 stop17h 48m
Deal found 8/9![United Airlines logo]()
$1,094
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.
Wed 12/25:00 am -
2 stops31h 00m
Wed 12/1611:50 am -
1 stop18h 34m
Deal found 8/8![United Airlines logo]()
$1,094
This United Airlines deal was found by Cheapflights users on 8/9. 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 10/251:10 pm -
1 stop26h 10m
Fri 11/2011:50 am -
1 stop17h 48m
Deal found 8/9![United Airlines logo]()
$1,140
This Delta 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 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 8/10![Delta logo]()
$1,498
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.
Thu 10/11:38 pm -
2 stops24h 17m
Sun 11/111:50 am -
1 stop17h 48m
Deal found 8/8![United Airlines logo]()
$1,140
This United Airlines deal was found by Cheapflights users on 8/5. 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 11/87:10 pm -
1 stop20h 10m
Wed 11/1111:50 am -
1 stop22h 52m
Deal found 8/5![United Airlines logo]()
$1,498
Last-minute flights from Idaho to SydneyDiscover last-minute flight deals from Idaho to Sydney. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Sydney. Data last updated August 10, 2026 and is based on user searches.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:16 pm -
2 stops22h 49m
Sat 8/229:10 am -
1 stop30h 28m
Deal found 8/6![Multiple Airlines logo]()
$1,112
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.
Fri 9/44:16 pm -
1 stop21h 34m
Wed 9/169:15 am -
1 stop23h 24m
Deal found 8/7![Delta logo]()
$1,140
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/411:11 am -
2 stops26h 49m
Sun 9/2010:20 am -
1 stop17h 10m
Deal found 8/7![United Airlines logo]()
$1,145
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:33 pm -
1 stop25h 22m
Wed 9/1610:20 am -
1 stop25h 31m
Deal found 8/7![United Airlines logo]()
$1,090
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:37 pm -
2 stops24h 23m
Tue 9/159:30 am -
2 stops28h 44m
Deal found 8/7![United Airlines logo]()
$1,095
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/611:45 am -
2 stops25h 40m
Thu 9/175:50 pm -
1 stop21h 48m
Deal found 8/7![Multiple Airlines logo]()
$1,114
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/63:00 pm -
2 stops23h 05m
Thu 9/175:50 pm -
2 stops22h 17m
Deal found 8/7![American Airlines logo]()
$1,141
This Qantas Airways 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:21 pm -
2 stops24h 59m
Thu 9/1712:00 pm -
1 stop25h 21m
Deal found 8/6![Qantas Airways logo]()
$1,137
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:36 pm -
2 stops24h 54m
Wed 9/239:10 am -
1 stop21h 13m
Deal found 8/7![Multiple Airlines logo]()
$1,063
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:36 pm -
2 stops24h 54m
Wed 9/2312:00 pm -
2 stops24h 39m
Deal found 8/7![American Airlines logo]()
$1,091
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:44 pm -
2 stops24h 36m
Mon 10/510:20 am -
2 stops40h 14m
Deal found 8/8![Air Canada logo]()
$1,315
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:27 pm -
2 stops22h 53m
Mon 10/510:20 am -
2 stops23h 47m
Deal found 8/6![Multiple Airlines logo]()
$1,387
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 August 10, 2026.
Search for one-way flight options from Idaho to Sydney. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This oojo deal was found by Cheapflights users on 8/5. 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.
Thu 11/196:02 am -
2 stops29h 23m
Deal found 8/5![Multiple Airlines logo]()
$565
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:47 pm -
1 stop20h 13m
Deal found 8/6![Multiple Airlines logo]()
$567
This oojo deal was found by Cheapflights users on 8/5. 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.
Thu 11/195:05 pm -
1 stop20h 55m
Deal found 8/5![Qantas Airways logo]()
$575
This FlightHub deal was found by Cheapflights users on 8/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/294:21 pm -
1 stop21h 44m
Deal found 8/5![Multiple Airlines logo]()
$585
This Delta deal was found by Cheapflights users on 8/5. 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 9/284:19 pm -
1 stop21h 31m
Deal found 8/5![Delta logo]()
$607
This Ovago deal was found by Cheapflights users on 8/5. 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.
Thu 10/17:00 am -
1 stop31h 05m
Deal found 8/5![Multiple Airlines logo]()
$617
This Delta deal was found by Cheapflights users on 8/5. 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 9/276:22 am -
1 stop31h 28m
Deal found 8/5![Delta logo]()
$618
This Delta deal was found by Cheapflights users on 8/5. 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.
Sat 10/35:49 pm -
2 stops44h 01m
Deal found 8/5![Delta logo]()
$627
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 11/312:49 pm -
2 stops23h 36m
Deal found 8/9![Multiple Airlines logo]()
$669
This deal was found by Cheapflights users on 8/9. 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.
Mon 11/27:10 pm -
1 stop20h 10m
Deal found 8/9![United Airlines logo]()
$698
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 August 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,063 (oojo) |
One-way from | $565 (oojo) |
Popular in | November |
Cheapest in | March |
Average price | $1,178 |
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 2,558,603 searches. Data last updated August 10, 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
SpokaneSydney
GEG Spokane - SYD Sydney Kingsford Smith
GEGSYD
Spokane
Tue 10/27
1:10 pm-9:20 am
1 stop26h 10m
Sydney Kingsford Smith
Tue 11/17
11:50 am-6:41 pm
1 stop25h 51m
$1,090
SpokaneSydney
GEG Spokane - SYD Sydney Kingsford Smith
GEGSYD
Spokane
Mon 9/7
4:16 pm-6:50 am
1 stop21h 34m
Sydney Kingsford Smith
Tue 9/15
9:15 am-3:39 pm
1 stop23h 24m
$1,090
SpokaneSydney
GEG Spokane - SYD Sydney Kingsford Smith
GEGSYD
Spokane
Wed 12/2
7:02 am-6:20 am
1 stop28h 18m
Sydney Kingsford Smith
Tue 12/15
11:50 am-11:24 am
1 stop18h 34m
$1,090
Quickest round-trip
SpokaneSydney
GEG Spokane - SYD Sydney Kingsford Smith
GEGSYD
Spokane
Tue 10/27
1:49 pm-8:05 am
2 stops24h 16m
Sydney Kingsford Smith
Mon 11/16
11:50 am-10:38 am
1 stop17h 48m
$1,094
SpokaneSydney
GEG Spokane - SYD Sydney Kingsford Smith
GEGSYD
Spokane
Wed 12/2
5:00 am-7:00 am
2 stops31h 00m
Sydney Kingsford Smith
Wed 12/16
11:50 am-11:24 am
1 stop18h 34m
$1,094
SpokaneSydney
GEG Spokane - SYD Sydney Kingsford Smith
GEGSYD
Spokane
Sat 10/24
7:20 pm-7:30 am
2 stops42h 10m
Sydney Kingsford Smith
Mon 11/16
10:40 am-12:15 pm
2 stops20h 35m
$1,108
SpokaneSydney
GEG Spokane - SYD Sydney Kingsford Smith
GEGSYD
Spokane
Sun 10/25
1:10 pm-9:20 am
1 stop26h 10m
Sydney Kingsford Smith
Fri 11/20
11:50 am-10:38 am
1 stop17h 48m
$1,140
SpokaneSydney
GEG Spokane - SYD Sydney Kingsford Smith
GEGSYD
Spokane
Thu 10/1
1:38 pm-6:55 am
2 stops24h 17m
Sydney Kingsford Smith
Sun 11/1
11:50 am-11:38 am
1 stop17h 48m
$1,140
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Sun 11/8
5:57 pm-2:20 pm
2 stops26h 23m
Sydney Kingsford Smith
Wed 11/11
11:05 am-1:40 pm
2 stops20h 35m
$1,465
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Wed 9/2
7:05 am-7:05 am
1 stop32h 00m
Sydney Kingsford Smith
Wed 9/16
9:10 am-11:00 pm
1 stop29h 50m
$1,480
Showing 1-10 of 22 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.
GEG-SYD
BOI-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
GEG-SYD
BOI-SYD
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 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
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Idaho and Sydney flights
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Idaho to Sydney flights
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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 2,558,603 searches. Data last updated August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,247 | Average$1,454 | FlexibilityNo cancel fee | On-time69% |