$713+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
Jul 4 — Jul 111
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Australia with Cheapflights
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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 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 June 4, 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 June 4, 2026.
This FlightHub deal was found by Cheapflights users on 5/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:30 am
BOI
- SYD
2 stops32h 50m
Air Canada
Tue 8/49:20 am
SYD
- BOI
2 stops30h 35m
Air Canada
Deal found 5/30![Air Canada logo]()
$1,134
This Expedia deal was found by Cheapflights users on 6/1. 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 8/102:05 pm
BOI
- SYD
2 stops25h 15m
Air Canada
Fri 8/149:20 am
SYD
- BOI
2 stops40h 14m
Air Canada
Deal found 6/1![Air Canada logo]()
$1,147
This FlightHub deal was found by Cheapflights users on 6/3. 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.
Thu 7/306:30 am
BOI
- SYD
2 stops32h 50m
Air Canada
Mon 8/319:20 am
SYD
- BOI
2 stops40h 15m
Air Canada
Deal found 6/3![Air Canada logo]()
$1,178
This FlightHub deal was found by Cheapflights users on 5/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:25 am
BOI
- SYD
2 stops32h 55m
Air Canada
Mon 10/510:20 am
SYD
- BOI
2 stops40h 15m
Air Canada
Deal found 5/30![Air Canada logo]()
$1,211
This Qantas Airways deal was found by Cheapflights users on 5/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:33 pm
BOI
- SYD
1 stop19h 32m
Multiple Airlines
Tue 8/45:50 pm
SYD
- BOI
1 stop20h 55m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,288
This American Airlines deal was found by Cheapflights users on 5/30. 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.
Wed 6/312:12 pm
BOI
- SYD
2 stops26h 53m
American Airlines
Tue 8/412:00 pm
SYD
- BOI
1 stop27h 21m
American Airlines
Deal found 5/30![American Airlines logo]()
$1,294
This Qantas Airways deal was found by Cheapflights users on 5/30. 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 Qantas Airways 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 10/56:50 pm
SYD
- BOI
1 stop21h 07m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,306
This American Airlines deal was found by Cheapflights users on 5/30. 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.
Wed 9/3012:19 pm
BOI
- SYD
1 stop26h 36m
American Airlines
Mon 10/510:10 am
SYD
- BOI
2 stops23h 40m
American Airlines
Deal found 5/30![American Airlines logo]()
$1,310
This Qantas Airways deal was found by Cheapflights users on 6/1. 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 7/307:07 pm
BOI
- SYD
1 stop20h 23m
Multiple Airlines
Mon 8/315:50 pm
SYD
- BOI
1 stop21h 10m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,340
This Alaska Airlines deal was found by Cheapflights users on 6/1. 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.
Mon 8/106:51 pm
BOI
- SYD
1 stop20h 39m
Alaska Airlines
Fri 8/145:50 pm
SYD
- BOI
1 stop32h 22m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$1,367
This United Airlines deal was found by Cheapflights users on 6/3. 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 11/86:55 pm
BOI
- ADL
2 stops25h 45m
United Airlines
Thu 11/128:40 am
ADL
- BOI
2 stops28h 06m
United Airlines
Deal found 6/3![United Airlines logo]()
$1,679
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 June 4, 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 June 4, 2026.
This FlightHub deal was found by Cheapflights users on 5/31. 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.
Thu 7/306:30 am
BOI
- SYD
2 stops32h 50m
Air Canada
Mon 8/319:20 am
SYD
- BOI
2 stops40h 15m
Air Canada
Deal found 5/31![Air Canada logo]()
$1,178
This Qantas Airways deal was found by Cheapflights users on 5/30. 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 Qantas Airways 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 10/56:50 pm
SYD
- BOI
1 stop21h 07m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,306
This American Airlines deal was found by Cheapflights users on 5/30. 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.
Wed 9/3012:19 pm
BOI
- SYD
1 stop26h 36m
American Airlines
Mon 10/510:10 am
SYD
- BOI
2 stops23h 40m
American Airlines
Deal found 5/30![American Airlines logo]()
$1,310
This United Airlines deal was found by Cheapflights users on 6/3. 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 7/245:00 am
BOI
- SYD
2 stops34h 00m
United Airlines
Sat 8/19:30 am
SYD
- BOI
2 stops24h 26m
United Airlines
Deal found 6/3![United Airlines logo]()
$1,414
This Alaska Airlines deal was found by Cheapflights users on 6/1. 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.
Mon 8/1010:52 am
BOI
- SYD
2 stops28h 38m
Alaska Airlines
Fri 8/145:50 pm
SYD
- BOI
1 stop32h 22m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$1,427
This FlightHub deal was found by Cheapflights users on 5/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:25 am
BOI
- SYD
2 stops32h 55m
Air Canada
Mon 10/510:20 am
SYD
- BOI
2 stops40h 15m
Air Canada
Deal found 5/30![Air Canada logo]()
$1,211
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Sat 8/85:46 pm
BOI
- SYD
2 stops45h 14m
United Airlines
Wed 8/129:30 am
SYD
- BOI
2 stops24h 28m
United Airlines
Deal found 5/30![United Airlines logo]()
$1,446
This Air Canada deal was found by Cheapflights users on 5/31. 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.
Sat 8/87:05 pm
BOI
- SYD
2 stops44h 15m
Air Canada
Wed 8/129:20 am
SYD
- BOI
2 stops40h 15m
Air Canada
Deal found 5/31![Air Canada logo]()
$1,409
This United Airlines deal was found by Cheapflights users on 6/3. 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 11/86:55 pm
BOI
- ADL
2 stops25h 45m
United Airlines
Thu 11/128:40 am
ADL
- BOI
2 stops28h 06m
United Airlines
Deal found 6/3![United Airlines logo]()
$1,679
Last-minute flights from Boise to AustraliaDiscover last-minute flight deals from Boise to Australia. Data last updated June 4, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Australia. Data last updated June 4, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 5/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:30 am
BOI
- SYD
2 stops32h 50m
Air Canada
Tue 8/49:20 am
SYD
- BOI
2 stops30h 35m
Air Canada
Deal found 5/30![Air Canada logo]()
$1,134
This Qantas Airways deal was found by Cheapflights users on 5/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:33 pm
BOI
- SYD
1 stop19h 32m
Multiple Airlines
Tue 8/45:50 pm
SYD
- BOI
1 stop20h 55m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,288
This American Airlines deal was found by Cheapflights users on 5/30. 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.
Wed 6/312:12 pm
BOI
- SYD
2 stops26h 53m
American Airlines
Tue 8/412:00 pm
SYD
- BOI
1 stop27h 21m
American Airlines
Deal found 5/30![American Airlines logo]()
$1,294
This KAYAK deal was found by Cheapflights users on 6/3. 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.
Fri 7/242:00 pm
BOI
- SYD
1 stop24h 55m
Air New Zealand
Sat 8/110:20 am
SYD
- BOI
1 stop27h 20m
Air New Zealand
Deal found 6/3![Air New Zealand logo]()
$1,393
This United Airlines deal was found by Cheapflights users on 6/3. 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 7/245:00 am
BOI
- SYD
2 stops34h 00m
United Airlines
Sat 8/19:30 am
SYD
- BOI
2 stops24h 26m
United Airlines
Deal found 6/3![United Airlines logo]()
$1,414
This FlightHub deal was found by Cheapflights users on 6/2. 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.
Thu 7/306:30 am
BOI
- SYD
2 stops32h 50m
Air Canada
Mon 8/319:20 am
SYD
- BOI
2 stops40h 15m
Air Canada
Deal found 6/2![Air Canada logo]()
$1,178
This Qantas Airways deal was found by Cheapflights users on 6/1. 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 7/307:07 pm
BOI
- SYD
1 stop20h 23m
Multiple Airlines
Mon 8/315:50 pm
SYD
- BOI
1 stop21h 10m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,340
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 June 4, 2026.
Search for one-way flight options from Boise to Australia. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
This oojo deal was found by Cheapflights users on 6/2. 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 9/26:47 pm
BOI
- SYD
1 stop20h 18m
Qantas Airways
Deal found 6/2![Qantas Airways logo]()
$713
This Alaska Airlines deal was found by Cheapflights users on 6/4. 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.
Wed 9/26:47 pm
BOI
- SYD
2 stops32h 03m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$724
This American Airlines deal was found by Cheapflights users on 6/2. 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 9/21:55 pm
BOI
- SYD
2 stops25h 10m
American Airlines
Deal found 6/2![American Airlines logo]()
$731
This United Airlines deal was found by Cheapflights users on 6/2. 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 9/27:05 pm
BOI
- SYD
1 stop19h 50m
United Airlines
Deal found 6/2![United Airlines logo]()
$733
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 June 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,147 (Expedia) |
One-way from | $713 (oojo) |
Popular in | December |
Cheapest in | March |
Average price | $1,346 |
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 June 4, 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
Thu 7/30
6:30 am-7:20 am
2 stops32h 50m
Sydney Kingsford Smith
Mon 8/31
9:20 am-9:35 am
2 stops40h 15m
$1,178
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 9/30
6:25 am-7:20 am
2 stops32h 55m
Sydney Kingsford Smith
Mon 10/5
10:20 am-9:35 am
2 stops40h 15m
$1,211
Quickest 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
6:50 pm-10:57 pm
1 stop21h 07m
$1,306
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 9/30
12:19 pm-6:55 am
1 stop26h 36m
Sydney Kingsford Smith
Mon 10/5
10:10 am-4:50 pm
2 stops23h 40m
$1,310
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Sat 8/8
7:05 pm-7:20 am
2 stops44h 15m
Sydney Kingsford Smith
Wed 8/12
9:20 am-9:35 am
2 stops40h 15m
$1,409
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Fri 7/24
5:00 am-7:00 am
2 stops34h 00m
Sydney Kingsford Smith
Sat 8/1
9:30 am-5:56 pm
2 stops24h 26m
$1,414
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Mon 8/10
10:52 am-7:30 am
2 stops28h 38m
Sydney Kingsford Smith
Fri 8/14
5:50 pm-10:12 am
1 stop32h 22m
$1,427
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Sat 8/8
5:46 pm-7:00 am
2 stops45h 14m
Sydney Kingsford Smith
Wed 8/12
9:30 am-5:58 pm
2 stops24h 28m
$1,446
BoiseAdelaide
BOI - ADL
BOIADL
Boise Air Term. Gowen Fld
Sun 11/8
6:55 pm-2:10 pm
2 stops25h 45m
Adelaide
Thu 11/12
8:40 am-7:16 pm
2 stops28h 06m
$1,679
Cheapest one-way
BoiseSydney
BOI - SYD
BOISYD
Boise Air Term. Gowen Fld
Wed 9/2
6:47 pm-6:50 pm
2 stops32h 03m
$724
Showing 1-10 of 12 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
BOI-ADL
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
BOI-ADL
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 June 4, 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.
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Food
6.6
Overall
7.4
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Food
6.6
Overall
7.4
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Crew
8.1
Food
6.6
Overall
7.4
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - 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
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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 June 4, 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 June 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$966 | Average$1,383 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$967 | Average$1,161 | FlexibilityNo cancel fee | On-time71% |