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Cheap flights from Boise to Sydney from $1,549

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
9 Jul — 16 Jul1
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 4 July 2025.

Round-trip from

$1,549

Popular in

December

Cheapest in

May

Average price

$2,107
American Airlines
  • American Airlines
  • 17/8-24/8
  • 4 total stops
  • 47h 01m total
  • Boise to Sydney
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($678 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease ($150 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 4 July 2025.

Sun 17/813:50BOI - SYD
2 stops25h 15mAmerican Airlines
Sun 24/817:45SYD - BOI
2 stops21h 46mAmerican Airlines
Deal found 3/7$1,549
Sun 17/808:18BOI - SYD
1 stop31h 12mAlaska Airlines
Sun 24/817:45SYD - BOI
1 stop21h 09mAlaska Airlines
Deal found 3/7$1,754
Thu 18/914:13BOI - SYD
1 stop24h 47mUnited Airlines
Fri 26/910:20SYD - BOI
1 stop19h 28mUnited Airlines
Deal found 2/7$2,019
Tue 30/914:05BOI - SYD
2 stops24h 30mDelta
Sat 4/1009:25SYD - BOI
2 stops23h 16mDelta
Deal found 3/7$2,027
Sat 26/706:25BOI - SYD
2 stops44h 50mMultiple Airlines
Sat 2/817:45SYD - BOI
1 stop36h 45mMultiple Airlines
Deal found 3/7$2,183
Tue 30/1207:30BOI - SYD
3 stops40h 10mAir Tahiti Nui
Sun 15/208:55SYD - BOI
2 stops32h 04mAir Tahiti Nui
Deal found 2/7$3,936
Sun 17/805:00BOI - SYD
3 stops34h 20mAir Canada
Sun 24/809:20SYD - BOI
2 stops27h 54mAir Canada
Deal found 3/7$4,262
Sun 13/713:29BOI - SYD
3 stops52h 06mLATAM Airlines
Thu 24/711:50SYD - BOI
3 stops40h 44mLATAM Airlines
Deal found 2/7$10,028

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 4 July 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

Sun 17/8

13:50-07:05

2 stops25h 15m

Sydney Kingsford Smith

Sun 24/8

17:45-23:31

2 stops21h 46m

$1,549

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 17/8

08:18-07:30

1 stop31h 12m

Sydney Kingsford Smith

Sun 24/8

17:45-22:54

1 stop21h 09m

$1,754

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Thu 18/9

14:13-07:00

1 stop24h 47m

Sydney Kingsford Smith

Fri 26/9

10:20-13:48

1 stop19h 28m

$2,019

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Tue 30/9

14:05-06:35

2 stops24h 30m

Sydney Kingsford Smith

Sat 4/10

09:25-16:41

2 stops23h 16m

$2,027

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 26/7

06:25-19:15

2 stops44h 50m

Sydney Kingsford Smith

Sat 2/8

17:45-14:30

1 stop36h 45m

$2,183

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Tue 30/12

07:30-17:40

3 stops40h 10m

Sydney Kingsford Smith

Sun 15/2

08:55-22:59

2 stops32h 04m

$3,936

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 17/8

05:00-07:20

3 stops34h 20m

Sydney Kingsford Smith

Sun 24/8

09:20-21:14

2 stops27h 54m

$4,262

Flights are sorted by cheapest return flights first.

Deals found on 3/7

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.

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 4 July 2025.
Get a feel of what it's like to fly with Air Tahiti Nui, Alaska Airlines, andDelta from Boise to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Boarding

8.7

Entertainment

7.3

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

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

Boarding

8.7

Entertainment

7.3

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

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

Boarding

8.7

Entertainment

7.3

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

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.
Delta
8.0
Very Good
7,982 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Boarding

8.7

Entertainment

7.3

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

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
8,844 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Boarding

8.7

Entertainment

7.3

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

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

Boarding

8.7

Entertainment

7.3

Crew

9.0

Food

7.8

Overall

8.7

Comfort

8.1

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 $1,549, 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 $1,754 and $2,019, respectively. American Airlines is currently priced 24% 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

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

Fly with Cheapflights

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

Cheapflights helps you search for flights from Boise to Sydney via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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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