Cheap flights from Boise to Sydney from $879

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boise to Sydney departing on 7/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Cheap return flights

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Alaska Airlines Logo
09:00 - 19:45BOI-SYD
40h 45m2 stops
Alaska Airlines Logo
21:40 - 13:45SYD-BOI
33h 05m2 stops
$1,660Alaska Airlines
Find Deal
Wed, 25 Feb - Tue, 10 Mar
Alaska Airlines Logo
09:00 - 19:45BOI-SYD
40h 45m2 stops
Alaska Airlines Logo
21:40 - 16:20SYD-BOI
35h 40m2 stops
$1,674Alaska Airlines
Find Deal
Wed, 25 Feb - Sun, 8 Mar
Hawaiian Airlines Logo
05:45 - 19:45BOI-SYD
20h 00m2 stops
Hawaiian Airlines Logo
21:40 - 10:34SYD-BOI
30h 54m2 stops
$1,786Hawaiian Airlines
Find Deal
Sat, 6 Dec - Sat, 13 Dec
Multiple Airlines Logo
07:30 - 07:25BOI-SYD
29h 55m1 stop
Multiple Airlines Logo
14:10 - 21:35SYD-BOI
24h 25m2 stops
$1,791Multiple Airlines
Find Deal
Fri, 27 Feb - Wed, 11 Mar
Multiple Airlines Logo
07:30 - 07:25BOI-SYD
29h 55m1 stop
Multiple Airlines Logo
14:10 - 21:35SYD-BOI
24h 25m2 stops
$1,800Multiple Airlines
Find Deal
Sat, 28 Feb - Wed, 11 Mar
United Airlines Logo
13:27 - 09:15BOI-SYD
25h 48m1 stop
United Airlines Logo
12:10 - 15:56SYD-BOI
20h 46m1 stop
$1,896United Airlines
Find Deal
Wed, 25 Feb - Thu, 12 Mar
United Airlines Logo
18:55 - 09:15BOI-SYD
20h 20m1 stop
United Airlines Logo
11:20 - 21:22SYD-BOI
28h 02m2 stops
$1,902United Airlines
Find Deal
Tue, 30 Dec - Sun, 15 Feb
American Airlines Logo
07:39 - 06:55BOI-SYD
29h 16m1 stop
American Airlines Logo
14:05 - 21:09SYD-BOI
25h 04m1 stop
$1,923American Airlines
Find Deal
Wed, 18 Feb - Sat, 28 Feb
American Airlines Logo
14:17 - 09:00BOI-SYD
24h 43m2 stops
American Airlines Logo
11:20 - 16:45SYD-BOI
22h 25m2 stops
$1,928American Airlines
Find Deal
Sat, 28 Feb - Wed, 11 Mar
Hawaiian Airlines Logo
05:45 - 19:45BOI-SYD
20h 00m2 stops
Hawaiian Airlines Logo
21:40 - 12:38SYD-BOI
32h 58m2 stops
$2,053Hawaiian Airlines
Find Deal
Fri, 5 Dec - Fri, 12 Dec

Alaska Airlines flights from Boise to Sydney

Our best Alaska Airlines deals on Boise to Sydney flight tickets
Alaska Airlines
25 Feb
BOI09:00Boise Air Term. Gowen Fld
40h 45m
2 stops
SYD19:45Sydney Kingsford Smith
10 Mar
SYD21:40Sydney Kingsford Smith
33h 05m
2 stops
BOI13:45Boise Air Term. Gowen Fld
Alaska Airlines
25 Feb
BOI09:00Boise Air Term. Gowen Fld
40h 45m
2 stops
SYD19:45Sydney Kingsford Smith
8 Mar
SYD21:40Sydney Kingsford Smith
35h 40m
2 stops
BOI16:20Boise Air Term. Gowen Fld
Alaska Airlines
26 Feb
BOI11:54Boise Air Term. Gowen Fld
37h 51m
2 stops
SYD19:45Sydney Kingsford Smith
10 Mar
SYD21:40Sydney Kingsford Smith
40h 55m
2 stops
BOI21:35Boise Air Term. Gowen Fld

United Airlines flights from Boise to Sydney

Our best United Airlines deals on Boise to Sydney flight tickets
United Airlines
25 Feb
BOI13:27Boise Air Term. Gowen Fld
25h 48m
1 stop
SYD09:15Sydney Kingsford Smith
12 Mar
SYD12:10Sydney Kingsford Smith
20h 46m
1 stop
BOI15:56Boise Air Term. Gowen Fld
United Airlines
30 Dec
BOI18:55Boise Air Term. Gowen Fld
20h 20m
1 stop
SYD09:15Sydney Kingsford Smith
15 Feb
SYD11:20Sydney Kingsford Smith
28h 02m
2 stops
BOI21:22Boise Air Term. Gowen Fld

momondo 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, momondo users made 78,305 searches. Data last updated 23 October 2025.
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

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 25/2

09:00-19:45

2 stops40h 45m

Sydney Kingsford Smith

Tue 10/3

21:40-13:45

2 stops33h 05m

$1,660

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 25/2

09:00-19:45

2 stops40h 45m

Sydney Kingsford Smith

Sun 8/3

21:40-16:20

2 stops35h 40m

$1,674

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 6/12

05:45-19:45

2 stops20h 00m

Sydney Kingsford Smith

Sat 13/12

21:40-10:34

2 stops30h 54m

$1,786

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Fri 27/2

07:30-07:25

1 stop29h 55m

Sydney Kingsford Smith

Wed 11/3

14:10-21:35

2 stops24h 25m

$1,791

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 28/2

07:30-07:25

1 stop29h 55m

Sydney Kingsford Smith

Wed 11/3

14:10-21:35

2 stops24h 25m

$1,800

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 25/2

13:27-09:15

1 stop25h 48m

Sydney Kingsford Smith

Thu 12/3

12:10-15:56

1 stop20h 46m

$1,896

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Tue 30/12

18:55-09:15

1 stop20h 20m

Sydney Kingsford Smith

Sun 15/2

11:20-21:22

2 stops28h 02m

$1,902

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 18/2

07:39-06:55

1 stop29h 16m

Sydney Kingsford Smith

Sat 28/2

14:05-21:09

1 stop25h 04m

$1,923

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sat 28/2

14:17-09:00

2 stops24h 43m

Sydney Kingsford Smith

Wed 11/3

11:20-16:45

2 stops22h 25m

$1,928

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Fri 5/12

05:45-19:45

2 stops20h 00m

Sydney Kingsford Smith

Fri 12/12

21:40-12:38

2 stops32h 58m

$2,053

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Boise to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Boise and Sydney?

What is the cheapest month to fly to Sydney?

The month of September is, on average, the cheapest month to fly to Sydney from Boise, with most prices found around $1,483. If you aren’t able to travel to Sydney during the month of September, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $1,588.

When to book flights from Boise to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Boise to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Boise to Sydney (BOI to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boise to Sydney

Direct flights

None
There are no direct flights from Boise to Sydney. There are no popular flight routes from Boise to Sydney.
  • How far is Boise Air Term. Gowen Fld to Sydney Kingsford Smith by plane?

    The straight-line distance from Boise Air Term. Gowen Fld to Sydney Kingsford Smith is 12701.7 km. In terms of flight time, this usually takes a little over 19h 45m.

  • When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Boise Air Term. Gowen Fld Airport to Sydney Kingsford Smith Airport were last updated today.

  • How old do you have to be to fly from Boise Air Term. Gowen Fld Airport to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Boise Air Term. Gowen Fld Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The travel and health documents you'll need for your trip to Sydney Kingsford Smith Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Sydney?

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

Why use momondo?

Why should I use momondo to find a flight deal from Boise to Sydney?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boise to Sydney . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Boise to Sydney with flexible booking policies on momondo?

All flight searches from Boise to Sydney on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Boise to Sydney?

Once all potential Boise to Sydney flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Boise to Sydney right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Boise to Sydney flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
Sat 22/11
Sat 29/11

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