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Cheap flights from Boise to Sydney from $1,449

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Boise to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 June 2025.

Round-trip from

$1,449

Popular in

December

Cheapest in

May

Average price

$2,083
American Airlines
  • American Airlines
  • 26/7-2/8
  • 3 total stops
  • 52h 36m total
  • Boise to Sydney
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($1,003 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($257 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
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Find flight deals from Boise to Sydney

Cheapest flights from Boise to Sydney
Explore the most affordable flight options available from Boise to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Sat 26/715:35BOI - SYD
1 stop23h 20mAmerican Airlines
Sat 2/809:10SYD - BOI
2 stops29h 16mAmerican Airlines
Deal found 11/6$1,449
Thu 13/1108:08BOI - SYD
1 stop29h 17mAlaska Airlines
Mon 17/1117:25SYD - BOI
1 stop23h 37mAlaska Airlines
Deal found 10/6$1,900
Sat 26/708:18BOI - SYD
1 stop31h 12mMultiple Airlines
Sat 2/817:45SYD - BOI
1 stop21h 09mMultiple Airlines
Deal found 11/6$2,046
Tue 30/1210:40BOI - SYD
1 stop28h 35mUnited Airlines
Sun 15/214:00SYD - BOI
1 stop25h 08mUnited Airlines
Deal found 11/6$2,204
Thu 13/1106:15BOI - SYD
3 stops33h 20mAir Canada
Mon 17/1111:20SYD - BOI
2 stops28h 01mAir Canada
Deal found 10/6$3,035
Tue 30/1219:00BOI - SYD
3 stops28h 40mAir Tahiti Nui
Sun 15/208:55SYD - BOI
2 stops32h 04mAir Tahiti Nui
Deal found 11/6$3,515

Cheapflights Fare Finder

Customise your flight search to find flights from Boise 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 647,157 searches. Data last updated 13 June 2025.
Use the filters below to find and compare flights from Boise to Sydney that are best for you.

Fly from

Boise

Fly to

Sydney

Route

Depart

Return

Price

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 26/7

15:35-06:55

1 stop23h 20m

Sydney Kingsford Smith

Sat 2/8

09:10-22:26

2 stops29h 16m

$1,449

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 13/11

08:08-07:25

1 stop29h 17m

Sydney Kingsford Smith

Mon 17/11

17:25-23:02

1 stop23h 37m

$1,900

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 26/7

08:18-07:30

1 stop31h 12m

Sydney Kingsford Smith

Sat 2/8

17:45-22:54

1 stop21h 09m

$2,046

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 27/7

19:15-06:55

1 stop19h 40m

Sydney Kingsford Smith

Sun 3/8

10:20-19:11

1 stop24h 51m

$2,320

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 13/11

06:15-09:35

3 stops33h 20m

Sydney Kingsford Smith

Mon 17/11

11:20-21:21

2 stops28h 01m

$3,035

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Fri 24/10

20:26-20:40

3 stops31h 14m

Sydney Kingsford Smith

Wed 5/11

19:15-23:02

3 stops45h 47m

$3,552

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Fri 26/9

19:05-06:55

1 stop19h 50m

$2,097

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Best time to book a flight from Boise to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Boise with our price prediction graph.
Estimated return 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 Sydney

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

Currently, May is the cheapest month in which you can book a flight from Boise to Sydney (average of $129). Flying from Boise to Sydney in October is currently the most expensive (average of $171). 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.

Rainfall in Sydney by month

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

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

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

If weather is an important factor for your trip to Sydney, 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 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated 13 June 2025.
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Food

7.8

Entertainment

7.3

Boarding

8.7

Overall

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.7
Very Good
64 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Food

7.8

Entertainment

7.3

Boarding

8.7

Overall

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Alaska Airlines
8.0
Very Good
10,000 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Food

7.8

Entertainment

7.3

Boarding

8.7

Overall

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
United Airlines
7.4
Good
8,790 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Food

7.8

Entertainment

7.3

Boarding

8.7

Overall

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
American Airlines
7.2
Good
10,000 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Food

7.8

Entertainment

7.3

Boarding

8.7

Overall

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Canada
7.1
Good
9,537 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Food

7.8

Entertainment

7.3

Boarding

8.7

Overall

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Related info for your journey

Find useful and relevant information for your journey from Boise to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Boise to Sydney round-trip?

    Currently priced at $1,449, American Airlines will fly you from Boise to Sydney and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and United Airlines - these airlines can fly you to your destination from $1,900 and $2,320, respectively. American Airlines is currently priced 32% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise to Sydney 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 Sydney?

    Currently, May is the cheapest month in which you can book a flight from Boise to Sydney (average of $129). Flying from Boise to Sydney in October is currently the most expensive (average of $171). 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

Travelling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Manly
Penrith
Coogee
Randwick
Cronulla
Terrigal
Lithgow
Bondi Beach
Leura
Swansea

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boise to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Spokane to Sydney flights

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How does Cheapflights help users find flights from Boise to Sydney?

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Why should you use Cheapflights to find cheap flight tickets from Boise to Sydney?

Millions of users choose and trust Cheapflights to book the best flight deals from Boise to Sydney for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Boise to Sydney with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Boise to Sydney, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Boise to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Boise today and book when prices fit your budget.

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