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Cheap flights from Boise to Sydney from $1,547

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SYD
7 Sep — 14 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boise to Sydney

Enter your travel dates to find the best prices.

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 8 August 2026.

Fri 7/810:52 -
1 stop27h 33m
Sun 9/821:50 -
2 stops40h 55m
Deal found 3/8$1,781
Wed 30/906:25 -
2 stops32h 55m
Mon 5/1010:20 -
2 stops40h 14m
Deal found 5/8$1,858
Wed 30/916:27 -
2 stops22h 53m
Mon 5/1010:20 -
2 stops23h 47m
Deal found 6/8$1,962
Mon 21/916:27 -
2 stops22h 53m
Sun 27/909:20 -
2 stops19h 54m
Deal found 4/8$1,996
Sat 8/808:03 -
1 stop31h 27m
Mon 10/817:50 -
1 stop20h 55m
Deal found 4/8$2,031
Fri 7/805:57 -
2 stops33h 33m
Sun 9/817:50 -
2 stops45h 58m
Deal found 3/8$2,032
Sat 8/813:55 -
2 stops25h 35m
Mon 10/816:15 -
2 stops22h 30m
Deal found 4/8$2,071
Sun 8/1117:57 -
2 stops26h 23m
Wed 11/1111:05 -
2 stops20h 35m
Deal found 5/8$2,072

Find 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 8 August 2026.

Round-trip from

$1,858

One-way from

$1,547

Popular in

November

Cheapest in

March

Average price

$1,666
Air Canada
  • Air Canada
  • 30/9-5/10
  • 4 total stops
  • 73h 09m total
  • Boise to Sydney
Search Deals
Qantas Airways
  • Qantas Airways
  • 3/2
  • 2 total stops
  • 26h 57m total
  • Boise to Sydney
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($297 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($76 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

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 8 August 2026.
Use the filters below to find and compare flights from Boise to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BoiseSydney

BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith

BOISYD

Boise Air Term. Gowen Fld

Sun 8/11

17:57-14:20

2 stops26h 23m

Sydney Kingsford Smith

Wed 11/11

11:05-13:40

2 stops20h 35m

$2,071
Fastest return journey

BoiseSydney

BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith

BOISYD

Boise Air Term. Gowen Fld

Sun 8/11

19:10-09:20

1 stop20h 10m

Sydney Kingsford Smith

Wed 11/11

11:50-16:42

1 stop22h 52m

$2,117

BoiseSydney

BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith

BOISYD

Boise Air Term. Gowen Fld

Wed 30/9

16:00-06:50

1 stop22h 50m

Sydney Kingsford Smith

Mon 5/10

10:15-14:44

1 stop21h 29m

$2,119
Cheapest one-way
Fastest single journey

BoiseSydney

BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith

BOISYD

Boise Air Term. Gowen Fld

Wed 3/2

13:58-10:55

2 stops26h 57m

$1,547

BoiseSydney

BOI Boise Air Term. Gowen Fld - SYD Sydney Kingsford Smith

BOISYD

Boise Air Term. Gowen Fld

Wed 3/2

08:18-06:25

1 stop28h 07m

$2,140

Flights are sorted by cheapest return flights first.

Deals found on 4/8

Sorted by cheapest first

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.

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.

  • How long is the flight from Boise to Sydney?

    Departing from Boise to Sydney will take you 26h 23m. Airlines will cover a distance of 12704 km.

  • 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.

See more FAQs

Travelling to a place near Sydney?

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

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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