$554+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
Sep 5 — Sep 121
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 August 6, 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 August 6, 2026.
This Ovago deal was found by Cheapflights users on 8/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/710:52 am -
1 stop27h 33m
Sun 8/99:50 pm -
2 stops40h 55m
Deal found 8/3![Multiple Airlines logo]()
$1,259
This FlightHub deal was found by Cheapflights users on 8/2. 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.
Wed 9/306:25 am -
2 stops32h 55m
Mon 10/510:20 am -
2 stops40h 14m
Deal found 8/2![Air Canada logo]()
$1,314
This KAYAK deal was found by Cheapflights users on 8/1. 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 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 8/1![Multiple Airlines logo]()
$1,387
This Ovago deal was found by Cheapflights users on 8/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:27 pm -
2 stops22h 53m
Sun 9/279:20 am -
2 stops19h 54m
Deal found 8/4![Multiple Airlines logo]()
$1,411
This Travelocity deal was found by Cheapflights users on 8/4. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/88:03 am -
1 stop31h 27m
Mon 8/105:50 pm -
1 stop20h 55m
Deal found 8/4![Alaska Airlines logo]()
$1,436
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/75:57 am -
2 stops33h 33m
Sun 8/95:50 pm -
2 stops45h 58m
Deal found 8/3![Alaska Airlines logo]()
$1,437
This oojo deal was found by Cheapflights users on 8/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:03 am -
1 stop31h 02m
Sat 8/225:50 pm -
1 stop34h 43m
Deal found 8/1![Multiple Airlines logo]()
$1,458
This Qantas Airways deal was found by Cheapflights users on 8/4. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/81:55 pm -
2 stops25h 35m
Mon 8/104:15 pm -
2 stops22h 30m
Deal found 8/4![Multiple Airlines logo]()
$1,464
This Qantas Airways deal was found by Cheapflights users on 8/2. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:47 pm -
2 stops27h 23m
Wed 8/262:00 pm -
2 stops24h 30m
Deal found 8/2![Qantas Airways logo]()
$1,706
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sat 8/227:05 pm -
2 stops24h 30m
Wed 8/266:05 am -
2 stops28h 49m
Deal found 8/3![United Airlines logo]()
$1,717
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 August 6, 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 August 6, 2026.
This KAYAK deal was found by Cheapflights users on 8/3. 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.
Wed 9/304:27 pm -
2 stops22h 53m
Mon 10/510:20 am -
2 stops23h 47m
Deal found 8/3![Multiple Airlines logo]()
$1,387
This Qantas Airways deal was found by Cheapflights users on 8/3. 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 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 8/3![Qantas Airways logo]()
$1,464
This United Airlines deal was found by Cheapflights users on 7/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:10 pm -
1 stop21h 10m
Sun 11/111:50 am -
1 stop22h 52m
Deal found 7/31![United Airlines logo]()
$1,496
This United Airlines deal was found by Cheapflights users on 8/3. 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 11/87:10 pm -
1 stop20h 10m
Wed 11/1111:50 am -
1 stop22h 52m
Deal found 8/3![United Airlines logo]()
$1,497
This Qantas Airways deal was found by Cheapflights users on 7/31. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:57 pm -
2 stops28h 03m
Sun 11/111:20 am -
1 stop20h 20m
Deal found 7/31![Qantas Airways logo]()
$1,499
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:44 pm -
2 stops24h 16m
Mon 10/511:20 am -
1 stop19h 45m
Deal found 8/1![United Airlines logo]()
$1,501
This Qantas Airways deal was found by Cheapflights users on 8/2. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:47 pm -
2 stops27h 23m
Wed 8/262:00 pm -
2 stops24h 30m
Deal found 8/2![Qantas Airways logo]()
$1,706
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sat 8/227:05 pm -
2 stops24h 30m
Wed 8/266:05 am -
2 stops28h 49m
Deal found 8/3![United Airlines logo]()
$1,717
Last-minute flights from Boise to AustraliaDiscover last-minute flight deals from Boise to Australia. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Australia. Data last updated August 6, 2026 and is based on user searches.
This Ovago deal was found by Cheapflights users on 8/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/710:52 am -
1 stop27h 33m
Sun 8/99:50 pm -
2 stops40h 55m
Deal found 8/3![Multiple Airlines logo]()
$1,259
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/75:57 am -
2 stops33h 33m
Sun 8/95:50 pm -
2 stops45h 58m
Deal found 8/3![Alaska Airlines logo]()
$1,437
This Travelocity deal was found by Cheapflights users on 8/4. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/88:03 am -
1 stop31h 27m
Mon 8/105:50 pm -
1 stop20h 55m
Deal found 8/4![Alaska Airlines logo]()
$1,436
This Qantas Airways deal was found by Cheapflights users on 8/4. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/81:55 pm -
2 stops25h 35m
Mon 8/104:15 pm -
2 stops22h 30m
Deal found 8/4![Multiple Airlines logo]()
$1,464
This oojo deal was found by Cheapflights users on 8/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:03 am -
1 stop31h 02m
Sat 8/225:50 pm -
1 stop34h 43m
Deal found 8/1![Multiple Airlines logo]()
$1,458
This Qantas Airways deal was found by Cheapflights users on 8/2. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:47 pm -
2 stops27h 23m
Wed 8/262:00 pm -
2 stops24h 30m
Deal found 8/2![Qantas Airways logo]()
$1,706
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sat 8/227:05 pm -
2 stops24h 30m
Wed 8/266:05 am -
2 stops28h 49m
Deal found 8/3![United Airlines logo]()
$1,717
This Ovago deal was found by Cheapflights users on 8/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:27 pm -
2 stops22h 53m
Sun 9/279:20 am -
2 stops19h 54m
Deal found 8/4![Multiple Airlines logo]()
$1,411
This FlightHub deal was found by Cheapflights users on 8/2. 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.
Wed 9/306:25 am -
2 stops32h 55m
Mon 10/510:20 am -
2 stops40h 14m
Deal found 8/2![Air Canada logo]()
$1,314
This KAYAK deal was found by Cheapflights users on 8/1. 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 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 8/1![Multiple Airlines logo]()
$1,387
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 August 6, 2026.
Search for one-way flight options from Boise to Australia. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:52 pm -
3 stops58h 23m
Deal found 8/3![Multiple Airlines logo]()
$554
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:09 pm -
3 stops34h 06m
Deal found 8/3![Multiple Airlines logo]()
$604
This oojo deal was found by Cheapflights users on 8/2. 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.
Mon 11/22:03 pm -
2 stops24h 57m
Deal found 8/2![Qantas Airways logo]()
$677
This Delta deal was found by Cheapflights users on 8/3. 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 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
Deal found 8/3![Delta logo]()
$698
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 August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,314 (FlightHub) |
One-way from | $554 (Kiwi.com) |
Popular in | November |
Cheapest in | March |
Average price | $1,178 |
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 August 6, 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 Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Wed 9/30
4:27 pm-7:20 am
2 stops22h 53m
Sydney Kingsford Smith
Mon 10/5
10:20 am-5:07 pm
2 stops23h 47m
$1,387
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
$1,464
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Wed 10/28
7:10 pm-9:20 am
1 stop21h 10m
Sydney Kingsford Smith
Sun 11/1
11:50 am-5:42 pm
1 stop22h 52m
$1,496
Quickest round-trip
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Sun 11/8
7:10 pm-9:20 am
1 stop20h 10m
Sydney Kingsford Smith
Wed 11/11
11:50 am-4:42 pm
1 stop22h 52m
$1,497
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Wed 10/28
6:57 pm-4:00 pm
2 stops28h 03m
Sydney Kingsford Smith
Sun 11/1
11:20 am-2:40 pm
1 stop20h 20m
$1,499
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Wed 9/30
2:44 pm-7:00 am
2 stops24h 16m
Sydney Kingsford Smith
Mon 10/5
11:20 am-2:05 pm
1 stop19h 45m
$1,501
BoiseAdelaide
BOI Boise Air Term. Gowen Fld - ADL Adelaide
BOIADL
Boise Air Term. Gowen Fld
Sat 8/22
6:47 pm-1:40 pm
2 stops27h 23m
Adelaide
Wed 8/26
2:00 pm-11:00 pm
2 stops24h 30m
$1,706
BoiseAdelaide
BOI Boise Air Term. Gowen Fld - ADL Adelaide
BOIADL
Boise Air Term. Gowen Fld
Sat 8/22
7:05 pm-11:05 am
2 stops24h 30m
Adelaide
Wed 8/26
6:05 am-7:24 pm
2 stops28h 49m
$1,717
Cheapest one-way
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Mon 11/2
3:52 pm-8:15 pm
3 stops58h 23m
$554
BoiseSydney
BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith
BOISYD
Boise Air Term. Gowen Fld
Tue 11/3
7:00 am-6:25 am
1 stop29h 25m
$644
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
What is the cheapest month to book a flight from Boise to Australia?
Currently, January is the cheapest month in which you can book a flight from Boise to Australia (average of $1,068). Flying from Boise to Australia in July is currently the most expensive (average of $3,016). 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.
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 August 6, 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
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Food
6.7
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Crew
8.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Food
6.7
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Crew
8.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Food
6.7
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
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 August 6, 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 August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$966 | Average$1,305 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$967 | Average$1,161 | FlexibilityNo cancel fee | On-time71% |