$596+ Cheap flights from Boise (BOI) to Australia
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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
May 24 — May 311
Round-trip
1 adult, Economy
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Cheapest flights from Boise to AustraliaExplore the most affordable flight options available from Boise to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.
Explore the most affordable flight options available from Boise to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.
This oojo deal was found by Cheapflights users on 4/20. 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
BOI
- SYD
1 stop20h 43m
Multiple Airlines
Mon 10/510:10 am
SYD
- BOI
1 stop20h 34m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$1,292
This American Airlines deal was found by Cheapflights users on 4/20. 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 5/201:53 pm
BOI
- SYD
1 stop25h 02m
American Airlines
Wed 5/2712:00 pm
SYD
- BOI
1 stop26h 29m
American Airlines
Deal found 4/20![American Airlines logo]()
$1,315
This American Airlines deal was found by Cheapflights users on 4/22. 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 9/301:42 pm
BOI
- SYD
2 stops25h 48m
American Airlines
Mon 10/510:10 am
SYD
- BOI
2 stops23h 40m
American Airlines
Deal found 4/22![American Airlines logo]()
$1,318
This oojo deal was found by Cheapflights users on 4/22. 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 6/258:03 am
BOI
- SYD
1 stop31h 02m
Multiple Airlines
Sun 7/55:50 pm
SYD
- BOI
1 stop32h 22m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,353
This American Airlines deal was found by Cheapflights users on 4/22. 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 7/301:57 pm
BOI
- SYD
2 stops25h 08m
American Airlines
Mon 8/315:50 pm
SYD
- BOI
2 stops20h 50m
American Airlines
Deal found 4/22![American Airlines logo]()
$1,364
This American Airlines deal was found by Cheapflights users on 4/23. 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 5/41:53 pm
BOI
- SYD
1 stop25h 02m
American Airlines
Sat 5/99:10 am
SYD
- BOI
2 stops24h 43m
American Airlines
Deal found 4/23![American Airlines logo]()
$1,368
This United Airlines deal was found by Cheapflights users on 4/21. 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 6/222:05 pm
BOI
- SYD
1 stop24h 50m
United Airlines
Thu 7/29:30 am
SYD
- BOI
2 stops28h 05m
United Airlines
Deal found 4/21![United Airlines logo]()
$1,369
This United Airlines deal was found by Cheapflights users on 4/22. 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 5/88:02 am
BOI
- SYD
1 stop30h 58m
United Airlines
Sun 5/1710:20 am
SYD
- BOI
1 stop21h 06m
United Airlines
Deal found 4/22![United Airlines logo]()
$1,376
This oojo deal was found by Cheapflights users on 4/22. 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 9/266:47 pm
BOI
- SYD
1 stop20h 18m
Multiple Airlines
Sat 10/35:50 pm
SYD
- BOI
1 stop21h 05m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,383
This Alaska Airlines deal was found by Cheapflights users on 4/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:51 pm
BOI
- SYD
1 stop20h 09m
Alaska Airlines
Tue 11/311:15 am
SYD
- BOI
1 stop20h 29m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$1,385
Best flights from Boise to AustraliaDiscover carefully curated flight deals from Boise to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2026.
Discover carefully curated flight deals from Boise to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2026.
This oojo deal was found by Cheapflights users on 4/22. 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
BOI
- SYD
1 stop20h 43m
Multiple Airlines
Mon 10/510:10 am
SYD
- BOI
1 stop20h 34m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,292
This United Airlines deal was found by Cheapflights users on 4/19. 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 6/37:05 pm
BOI
- SYD
1 stop19h 50m
United Airlines
Wed 6/1010:20 am
SYD
- BOI
1 stop18h 48m
United Airlines
Deal found 4/19![United Airlines logo]()
$1,318
This American Airlines deal was found by Cheapflights users on 4/22. 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 9/301:42 pm
BOI
- SYD
2 stops25h 23m
American Airlines
Mon 10/51:00 pm
SYD
- BOI
1 stop26h 17m
American Airlines
Deal found 4/22![American Airlines logo]()
$1,318
This American Airlines deal was found by Cheapflights users on 4/19. 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 6/312:12 pm
BOI
- SYD
1 stop26h 43m
American Airlines
Wed 6/105:50 pm
SYD
- BOI
2 stops21h 21m
American Airlines
Deal found 4/19![American Airlines logo]()
$1,319
This United Airlines deal was found by Cheapflights users on 4/21. 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 6/227:05 pm
BOI
- SYD
1 stop19h 50m
United Airlines
Fri 7/39:30 am
SYD
- BOI
1 stop25h 48m
United Airlines
Deal found 4/21![United Airlines logo]()
$1,364
This American Airlines deal was found by Cheapflights users on 4/20. 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 5/202:14 pm
BOI
- SYD
2 stops24h 41m
American Airlines
Wed 5/279:10 am
SYD
- BOI
2 stops23h 59m
American Airlines
Deal found 4/20![American Airlines logo]()
$1,319
This United Airlines deal was found by Cheapflights users on 4/22. 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 6/2510:20 am
BOI
- SYD
2 stops28h 40m
United Airlines
Sun 7/59:30 am
SYD
- BOI
2 stops28h 05m
United Airlines
Deal found 4/22![United Airlines logo]()
$1,368
This American Airlines deal was found by Cheapflights users on 4/21. 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 6/225:40 pm
BOI
- SYD
2 stops21h 25m
American Airlines
Fri 7/312:00 pm
SYD
- BOI
1 stop27h 05m
American Airlines
Deal found 4/21![American Airlines logo]()
$1,365
This American Airlines deal was found by Cheapflights users on 4/21. 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 7/305:40 pm
BOI
- SYD
2 stops21h 25m
American Airlines
Mon 8/315:50 pm
SYD
- BOI
2 stops20h 50m
American Airlines
Deal found 4/21![American Airlines logo]()
$1,365
This American Airlines deal was found by Cheapflights users on 4/22. 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 5/86:26 pm
BOI
- SYD
2 stops20h 39m
American Airlines
Sun 5/1712:00 pm
SYD
- BOI
1 stop26h 54m
American Airlines
Deal found 4/22![American Airlines logo]()
$1,368
Last-minute flights from Boise to AustraliaDiscover last-minute flight deals from Boise to Australia. Data last updated April 24, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Australia. Data last updated April 24, 2026 and is based on user searches.
This BusinessClass deal was found by Cheapflights users on 4/19. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:00 am
BOI
- SYD
2 stops20h 50m
Multiple Airlines
Sat 4/258:45 pm
SYD
- BOI
2 stops28h 57m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$1,729
This oojo deal was found by Cheapflights users on 4/21. 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 4/257:14 pm
BOI
- SYD
1 stop19h 51m
Multiple Airlines
Mon 4/275:50 pm
SYD
- BOI
1 stop21h 11m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,509
This oojo deal was found by Cheapflights users on 4/22. 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 4/267:14 pm
BOI
- SYD
1 stop19h 51m
Multiple Airlines
Tue 4/285:50 pm
SYD
- BOI
1 stop21h 11m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,501
This American Airlines deal was found by Cheapflights users on 4/23. 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 5/41:53 pm
BOI
- SYD
1 stop25h 02m
American Airlines
Sat 5/912:00 pm
SYD
- BOI
1 stop26h 54m
American Airlines
Deal found 4/23![American Airlines logo]()
$1,365
This Expedia deal was found by Cheapflights users on 4/23. 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 5/49:02 am
BOI
- SYD
2 stops42h 08m
Multiple Airlines
Sat 5/95:50 pm
SYD
- BOI
3 stops58h 44m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,880
This United Airlines deal was found by Cheapflights users on 4/22. 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 5/88:02 am
BOI
- SYD
1 stop30h 58m
United Airlines
Sun 5/1710:20 am
SYD
- BOI
1 stop21h 06m
United Airlines
Deal found 4/22![United Airlines logo]()
$1,376
This American Airlines deal was found by Cheapflights users on 4/20. 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 5/201:53 pm
BOI
- SYD
1 stop25h 02m
American Airlines
Wed 5/2712:00 pm
SYD
- BOI
1 stop26h 29m
American Airlines
Deal found 4/20![American Airlines logo]()
$1,315
This Orbitz deal was found by Cheapflights users on 4/20. 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.
Wed 5/2012:30 pm
BOI
- SYD
2 stops28h 15m
Multiple Airlines
Wed 5/275:50 pm
SYD
- BOI
3 stops45h 08m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$2,125
One-way flights from Boise to AustraliaSearch for one-way flight options from Boise to Australia. Find affordable one-way fares based on user searches. Data last updated April 24, 2026.
Search for one-way flight options from Boise to Australia. Find affordable one-way fares based on user searches. Data last updated April 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
Sat 8/1510:52 am
BOI
- SYD
3 stops32h 58m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$596
This Travelocity deal was found by Cheapflights users on 4/21. 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.
Sat 8/156:51 pm
BOI
- SYD
1 stop20h 39m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$678
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
Sun 10/186:00 am
BOI
- SYD
3 stops59h 35m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$2,540
Find flight deals from Boise to Australia
Keep the following information in mind while searching for Boise to Australia flight deals. Data was last updated April 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,292 (oojo) |
One-way from | $596 (Kiwi.com) |
Popular in | December |
Cheapest in | March |
Average price | $1,270 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Australia 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 April 24, 2026.
Use the filters below to find and compare flights from Boise to Australia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 9/30
6:47 pm-7:30 am
1 stop20h 43m
Sydney Kingsford Smith
Mon 10/5
10:10 am-1:44 pm
1 stop20h 34m
$1,292
Quickest round-trip
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 6/3
7:05 pm-6:55 am
1 stop19h 50m
Sydney Kingsford Smith
Wed 6/10
10:20 am-1:08 pm
1 stop18h 48m
$1,318
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 9/30
1:42 pm-7:05 am
2 stops25h 23m
Sydney Kingsford Smith
Mon 10/5
1:00 pm-10:17 pm
1 stop26h 17m
$1,318
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 6/3
12:12 pm-6:55 am
1 stop26h 43m
Sydney Kingsford Smith
Wed 6/10
5:50 pm-11:11 pm
2 stops21h 21m
$1,319
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 5/20
2:14 pm-6:55 am
2 stops24h 41m
Sydney Kingsford Smith
Wed 5/27
9:10 am-5:09 pm
2 stops23h 59m
$1,319
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Mon 6/22
7:05 pm-6:55 am
1 stop19h 50m
Sydney Kingsford Smith
Fri 7/3
9:30 am-7:18 pm
1 stop25h 48m
$1,364
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Mon 6/22
5:40 pm-7:05 am
2 stops21h 25m
Sydney Kingsford Smith
Fri 7/3
12:00 pm-11:05 pm
1 stop27h 05m
$1,365
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Thu 7/30
5:40 pm-7:05 am
2 stops21h 25m
Sydney Kingsford Smith
Mon 8/31
5:50 pm-10:40 pm
2 stops20h 50m
$1,365
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Thu 6/25
10:20 am-7:00 am
2 stops28h 40m
Sydney Kingsford Smith
Sun 7/5
9:30 am-9:35 pm
2 stops28h 05m
$1,368
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Fri 5/8
6:26 pm-7:05 am
2 stops20h 39m
Sydney Kingsford Smith
Sun 5/17
12:00 pm-10:54 pm
1 stop26h 54m
$1,368
Showing 1-10 of 13 resultsSorted by cheapest first
Best time to book a flight from Boise to Australia
Have a flexible travel schedule? Discover the best time to fly to Australia from Boise with our price prediction graph.
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 Boise to Australia
BOI-AU0
BOI-SYD
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Australia
Get insights into the airlines that provide service to Australia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Australia. Reviews last updated April 24, 2026.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Boise to Australia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Entertainment
7.1
Overall
7.4
Boarding
7.7
Food
6.6
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Crew
8.1
Entertainment
7.1
Overall
7.4
Boarding
7.7
Food
6.6
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Crew
8.1
Entertainment
7.1
Overall
7.4
Boarding
7.7
Food
6.6
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Related info for your journey
Find useful and relevant information for your journey from Boise to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Boise to Australia
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Australia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boise to Australia by cabin class
Find flights from Boise to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boise and Australia flights
Browse other Boise and Australia flight options. Last updated on April 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to Australia regions
Consider these flights traveling to Australia regions.
Top 2 airlines flying from Boise to Australia
Discover the top 2 airlines that operate flights from Boise to Australia. 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 April 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$966 | Average$1,382 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$967 | Average$1,229 | FlexibilityNo cancel fee | On-time71% |