Cheap flights from Sydney to Idaho from $1,116

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Idaho departing on 5/25. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Sydney to Idaho

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:20 am - 1:08 pm
SYD
-
BOI
18h 48m
1 stop
United Airlines Logo
2:40 pm - 6:55 am
BOI
-
SYD
48h 15m
2 stops
$1,116United Airlines
lun., may. 25 - lun., jun. 1
American Airlines Logo
9:10 am - 5:09 pm
SYD
-
BOI
23h 59m
2 stops
American Airlines Logo
5:40 pm - 7:05 am
BOI
-
SYD
21h 25m
2 stops
$1,178American Airlines
dom., jun. 7 - dom., jun. 14
American Airlines Logo
12:00 pm - 10:29 pm
SYD
-
BOI
26h 29m
1 stop
American Airlines Logo
5:40 pm - 7:05 am
BOI
-
SYD
21h 25m
2 stops
$1,186American Airlines
dom., jun. 7 - dom., jun. 14
United Airlines Logo
10:20 am - 9:40 pm
SYD
-
BOI
27h 20m
1 stop
United Airlines Logo
2:05 pm - 6:55 am
BOI
-
SYD
24h 50m
1 stop
$1,273United Airlines
dom., jun. 7 - dom., jun. 14
Qantas Airways Logo
9:10 am - 5:09 pm
SYD
-
BOI
23h 59m
2 stops
Qantas Airways Logo
5:40 pm - 6:30 pm
BOI
-
SYD
56h 50m
2 stops
$1,303Qantas Airways
vie., may. 29 - vie., jun. 19
United Airlines Logo
9:30 am - 10:05 pm
SYD
-
BOI
28h 35m
1 stop
United Airlines Logo
10:41 am - 6:55 am
BOI
-
SYD
28h 14m
2 stops
$1,324United Airlines
vie., may. 29 - vie., jun. 19
United Airlines Logo
10:20 am - 4:44 pm
SYD
-
BOI
22h 24m
1 stop
United Airlines Logo
7:05 pm - 6:55 am
BOI
-
SYD
19h 50m
1 stop
$1,468United Airlines
vie., may. 29 - vie., jun. 19
United Airlines Logo
9:30 am - 7:27 pm
SYD
-
BOI
25h 57m
1 stop
United Airlines Logo
7:03 am - 8:00 am
BOI
-
SYD
31h 57m
1 stop
$1,659United Airlines
jue., sep. 17 - vie., oct. 9
United Airlines Logo
9:30 am - 5:53 pm
SYD
-
BOI
24h 23m
2 stops
United Airlines Logo
7:05 pm - 7:55 am
BOI
-
SYD
19h 50m
1 stop
$1,709United Airlines
vie., sep. 18 - vie., oct. 9
Delta Logo
9:15 am - 4:48 pm
SYD
-
BOI
23h 33m
2 stops
Delta Logo
10:38 am - 7:50 am
BOI
-
SYD
28h 12m
2 stops
$1,824Delta
jue., sep. 17 - jue., oct. 8

United Airlines flights from Sydney to Idaho

Our best United Airlines deals on Sydney to Idaho flight tickets
United Airlines
May 25
SYD10:20 amSydney Kingsford Smith
18h 48m
1 stop
BOI1:08 pmBoise Air Term. Gowen Fld
Jun 1
BOI2:40 pmBoise Air Term. Gowen Fld
48h 15m
2 stops
SYD6:55 amSydney Kingsford Smith
$1,116
United Airlines
Jun 7
SYD10:20 amSydney Kingsford Smith
27h 20m
1 stop
BOI9:40 pmBoise Air Term. Gowen Fld
Jun 14
BOI2:05 pmBoise Air Term. Gowen Fld
24h 50m
1 stop
SYD6:55 amSydney Kingsford Smith
$1,273
United Airlines
May 29
SYD9:30 amSydney Kingsford Smith
28h 35m
1 stop
BOI10:05 pmBoise Air Term. Gowen Fld
Jun 19
BOI10:41 amBoise Air Term. Gowen Fld
28h 14m
2 stops
SYD6:55 amSydney Kingsford Smith
$1,324

Singapore Airlines flights from Sydney to Idaho

Our best Singapore Airlines deals on Sydney to Idaho flight tickets
Singapore Airlines
Jun 3
SYD6:00 pmSydney Kingsford Smith
44h 05m
3 stops
BOI10:05 pmBoise Air Term. Gowen Fld
Jun 7
BOI7:00 amBoise Air Term. Gowen Fld
41h 45m
3 stops
SYD4:45 pmSydney Kingsford Smith
$4,707
Singapore Airlines
Jun 7
SYD6:00 pmSydney Kingsford Smith
44h 05m
3 stops
BOI10:05 pmBoise Air Term. Gowen Fld
Jun 14
BOI7:00 amBoise Air Term. Gowen Fld
41h 45m
3 stops
SYD4:45 pmSydney Kingsford Smith
$4,720
Singapore Airlines
Jun 27
SYD6:00 pmSydney Kingsford Smith
44h 05m
3 stops
BOI10:05 pmBoise Air Term. Gowen Fld
Jul 16
BOI7:00 amBoise Air Term. Gowen Fld
41h 45m
3 stops
SYD4:45 pmSydney Kingsford Smith
$4,737

momondo Fare Finder

 
Customize your flight search to find flights from Sydney to Idaho 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 832,500 searches. Data last updated abril 25, 2026.
Use the filters below to find and compare flights from Sydney to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

lun. 5/25

10:20 am-1:08 pm

1 stop18h 48m

Boise Air Term. Gowen Fld

lun. 6/1

2:40 pm-6:55 am

2 stops48h 15m

$1,116

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

dom. 6/7

9:10 am-5:09 pm

2 stops23h 59m

Boise Air Term. Gowen Fld

dom. 6/14

5:40 pm-7:05 am

2 stops21h 25m

$1,178

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

dom. 6/7

12:00 pm-10:29 pm

1 stop26h 29m

Boise Air Term. Gowen Fld

dom. 6/14

5:40 pm-7:05 am

2 stops21h 25m

$1,186

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

dom. 6/7

10:20 am-9:40 pm

1 stop27h 20m

Boise Air Term. Gowen Fld

dom. 6/14

2:05 pm-6:55 am

1 stop24h 50m

$1,273

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

vie. 5/29

9:10 am-5:09 pm

2 stops23h 59m

Boise Air Term. Gowen Fld

vie. 6/19

5:40 pm-6:30 pm

2 stops56h 50m

$1,303

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

vie. 5/29

9:30 am-10:05 pm

1 stop28h 35m

Boise Air Term. Gowen Fld

vie. 6/19

10:41 am-6:55 am

2 stops28h 14m

$1,324
Quickest round-trip

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

vie. 5/29

10:20 am-4:44 pm

1 stop22h 24m

Boise Air Term. Gowen Fld

vie. 6/19

7:05 pm-6:55 am

1 stop19h 50m

$1,468

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

jue. 9/17

9:30 am-7:27 pm

1 stop25h 57m

Boise Air Term. Gowen Fld

vie. 10/9

7:03 am-8:00 am

1 stop31h 57m

$1,659

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

vie. 9/18

9:30 am-5:53 pm

2 stops24h 23m

Boise Air Term. Gowen Fld

vie. 10/9

7:05 pm-7:55 am

1 stop19h 50m

$1,709

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

jue. 9/17

9:15 am-4:48 pm

2 stops23h 33m

Boise Air Term. Gowen Fld

jue. 10/8

10:38 am-7:50 am

2 stops28h 12m

$1,824

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Idaho from

How to get the cheapest flight ticket from Sydney to Idaho

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

Can stopping save me money on Sydney to Idaho flights?

You could potentially save up to 48% on your flight if you consider stops on a Sydney to Idaho flight.

Cheap Sydney to Idaho flight deals and tips

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

Fastest flight time

28h 05m

Direct flights

None
The fastest flight from Sydney to Idaho takes 28h 05m
There are no direct flights from Sydney to Idaho. There are no popular flight routes from Sydney to Idaho.

Frequently asked questions about flying from Sydney to Idaho

  • When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Idaho?

    Prices for flights from Sydney Kingsford Smith Airport to Idaho are refreshed on a daily basis.

  • How old do you have to be to fly from Sydney Kingsford Smith Airport to Idaho?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Idaho.

  • What documentation or ID do you need to fly to Idaho?

    The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

Finding the right flight to Idaho from Sydney is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Idaho from Sydney which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sydney to Idaho.

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

Of course. momondo tracks the price of Sydney to Idaho flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Idaho trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
lun. 5/25
lun. 6/1

Find better results for your trip to Idaho

Popular cities in Idaho

Popular flights according to clicks in the last 7 days on momondo