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$872+ Cheap flights from Boise (BOI) to Australia

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
1 adult, Economy
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Cheap flight deals from Boise to Australia

Keep the following information in mind while searching for Boise to Australia flight deals. Data was last updated March 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$872
(United Airlines)

Popular in

December

Cheapest in

May

Average price

$1,178
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Sydney Kingsford Smith flights.
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From Boise Air Term. Gowen Fld to Australia
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Highest demand for flights based on searches. 19% potential increase in price ($363 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($101 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Boise to Australia

Cheapest flights from Boise to Australia
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 March 3, 2025.

This United Airlines deal was found by Cheapflights users on 3/2. 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.
Mon 5/262:31 pmBOI - SYD
1 stop24h 24mUnited Airlines
Mon 6/1610:20 amSYD - BOI
1 stop22h 21mUnited Airlines
Deal found 3/2$872
This Delta deal was found by Cheapflights users on 3/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/253:35 pmBOI - SYD
1 stop23h 00mDelta
Wed 6/189:25 amSYD - BOI
1 stop18h 25mDelta
Deal found 3/2$965
This Ovago deal was found by Cheapflights users on 3/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/257:07 pmBOI - SYD
2 stops21h 38mAir New Zealand
Tue 6/1711:50 amSYD - BOI
2 stops23h 15mAir New Zealand
Deal found 3/2$1,520
This Expedia deal was found by Cheapflights users on 3/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/192:45 pmBOI - SYD
2 stops48h 20mMultiple Airlines
Sat 11/112:40 pmSYD - BOI
3 stops52h 19mMultiple Airlines
Deal found 3/2$1,598
This Gotogate deal was found by Cheapflights users on 3/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/37:10 pmBOI - SYD
3 stops44h 10mAir Canada
Mon 5/199:20 amSYD - BOI
2 stops28h 19mAir Canada
Deal found 3/3$2,046
This KAYAK deal was found by Cheapflights users on 3/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/136:30 amBOI - SYD
2 stops32h 10mSingapore Airlines
Sat 3/227:10 pmSYD - BOI
3 stops58h 27mSingapore Airlines
Deal found 3/2$5,195

Find flights from Boise to Australia within your budget

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 March 3, 2025.

Fly from

Boise

Fly to

Australia

Route

Depart

Return

Price

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Mon 5/26

10:45 am-6:55 am

1 stop28h 10m

Sydney Kingsford Smith

Tue 6/17

9:30 am-3:59 pm

1 stop22h 29m

$872

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 5/25

3:35 pm-6:35 am

1 stop23h 00m

Sydney Kingsford Smith

Wed 6/18

9:25 am-11:50 am

1 stop18h 25m

$965

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 5/25

7:07 pm-8:45 am

2 stops21h 38m

Sydney Kingsford Smith

Tue 6/17

11:50 am-7:05 pm

2 stops23h 15m

$1,520

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 5/3

7:10 pm-7:20 am

3 stops44h 10m

Sydney Kingsford Smith

Mon 5/19

9:20 am-9:39 pm

2 stops28h 19m

$2,046

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 3/13

6:58 pm-1:25 pm

2 stops25h 27m

Sydney Kingsford Smith

Mon 3/24

8:00 am-6:00 pm

3 stops27h 00m

$4,733

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 3/13

6:30 am-7:40 am

2 stops32h 10m

Sydney Kingsford Smith

Sat 3/22

7:10 pm-12:37 pm

3 stops58h 27m

$5,195

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 7/31

3:10 pm-5:10 pm

3 stops58h 00m

$11,419

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 7/31

7:00 pm-6:35 am

1 stop19h 35m

$12,578

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

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.
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.

Travel insights for flights from Boise to Australia

Get recent, data-driven insights about flights from Boise to Australia including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Boise to Australia?

Currently, February is the cheapest month in which you can book a flight from Boise to Australia (average of $1,051). Flying from Boise to Australia in December is currently the most expensive (average of $1,643). 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.

What is the cheapest time of day to fly from BOI to AU?

Find hourly flight availability from Boise to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boise to Australia as you normally would.

Rainfall in Australia by month

Plan your trip to Australia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Australia ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Australia when rainfall is around 2.0 in.

Temperature in Australia by month

Plan your trip to Australia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

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 March 3, 2025.
Peruse reviews from past customers who have flown with Singapore Airlines, Delta and Air New Zealand from Boise to Australia to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,289 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Singapore Airlines
8.1
Very good
1,289 reviews
Singapore Airlines
8.1
Very good
1,289 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Delta
8.0
Very good
8,070 reviews
Singapore Airlines
8.1
Very good
1,289 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Air New Zealand
7.9
Good
456 reviews
Singapore Airlines
8.1
Very good
1,289 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Qantas Airways
7.4
Good
813 reviews
Singapore Airlines
8.1
Very good
1,289 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

United Airlines
7.4
Good
8,679 reviews
Singapore Airlines
8.1
Very good
1,289 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

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.

  • What airport do you fly from for flights from Boise to Australia?

    Most people fly from Boise Air Term. Gowen Fld (BOI) if they book a flight from Boise to Australia. Boise Air Term. Gowen Fld is conveniently located just 3.3 mi from Boise’s city center.

  • Can I find deals for flights from Boise to Australia that include hotel bookings?

    Yes. In addition to deals on Boise to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Australia.

  • Can I find deals for business class flights from Boise to Australia?

    Yes. Cheapflights offers flight deals from Boise to Australia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boise to Australia?

    Currently, February is the cheapest month in which you can book a flight from Boise to Australia (average of $1,051). Flying from Boise to Australia in December is currently the most expensive (average of $1,643). 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.

See more FAQs

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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 March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$872Average$1,393FlexibilityNo cancel feeOn-time69%
DeltaCheapest$1,059Average$1,641FlexibilityNo cancel feeOn-timeN/A
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