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Boise

$917+ Cheap flights from Sydney (SYD) to Boise (BOI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BOI
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from Sydney to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Boise (BOI). 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 August 20, 2025.

Round-trip from

$917
(American Airlines)

Popular in

July

Cheapest in

August

Average price

$1,045
From Sydney Kingsford Smith to Boise Air Term. Gowen Fld
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Highest demand for flights based on searches. 0% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Sydney to Boise

Cheapest flights from Sydney to Boise
Explore the most affordable flight options available from Sydney to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This American Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:20 amSYD - BOI
2 stops29h 12mAmerican Airlines
Mon 11/31:29 pmBOI - SYD
2 stops25h 31mAmerican Airlines
Deal found 8/19$917
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:10 pmSYD - BOI
2 stops26h 11mUnited Airlines
Mon 11/32:11 pmBOI - SYD
1 stop24h 54mUnited Airlines
Deal found 8/19$933
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:40 amSYD - BOI
2 stops27h 36mDelta
Mon 11/34:00 pmBOI - SYD
1 stop22h 30mDelta
Deal found 8/18$938
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/49:30 amSYD - BOI
1 stop20h 00mUnited Airlines
Sat 10/1112:35 pmBOI - SYD
3 stops50h 20mUnited Airlines
Deal found 8/20$1,328
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:20 amSYD - BOI
1 stop19h 23mUnited Airlines
Thu 10/97:00 amBOI - SYD
2 stops32h 00mUnited Airlines
Deal found 8/17$1,385
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/29:10 amSYD - BOI
2 stops23h 42mAmerican Airlines
Thu 10/92:07 pmBOI - SYD
2 stops24h 58mAmerican Airlines
Deal found 8/17$1,422
This SmartFares deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:40 pmSYD - BOI
2 stops30h 27mAlaska Airlines
Tue 1/69:06 pmBOI - SYD
2 stops52h 39mAlaska Airlines
Deal found 8/18$1,620
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2312:10 pmSYD - BOI
1 stop17h 29mUnited Airlines
Tue 1/61:00 pmBOI - SYD
1 stop26h 15mUnited Airlines
Deal found 8/18$1,698

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sydney to Boise 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 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Sydney to Boise that are best for you.

Fly from

Sydney

Fly to

Boise

Route

Depart

Return

Price

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 10/30

11:20 am-11:32 pm

2 stops29h 12m

Boise Air Term. Gowen Fld

Mon 11/3

1:29 pm-9:00 am

2 stops25h 31m

$917

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 10/30

12:10 pm-9:21 pm

2 stops26h 11m

Boise Air Term. Gowen Fld

Mon 11/3

2:11 pm-9:05 am

1 stop24h 54m

$933

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 10/30

9:40 am-8:16 pm

2 stops27h 36m

Boise Air Term. Gowen Fld

Mon 11/3

4:00 pm-8:30 am

1 stop22h 30m

$938

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Sat 10/4

9:30 am-9:24 pm

2 stops27h 54m

Boise Air Term. Gowen Fld

Sat 10/11

12:35 pm-7:55 am

3 stops50h 20m

$1,328

SydneyBoise

SYD - BOI

SYDBOI

Sydney Kingsford Smith

Thu 10/2

10:20 am-1:43 pm

1 stop19h 23m

Boise Air Term. Gowen Fld

Thu 10/9

7:00 am-8:00 am

2 stops32h 00m

$1,385

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Best time to book a flight from Sydney to Boise

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

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

Currently, October is the cheapest month in which you can book a flight from Sydney to Boise (average of $314). Flying from Sydney to Boise in June is currently the most expensive (average of $399). 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 Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated August 20, 2025.
Read reviews from past customers who have flown United Airlines from Sydney to Boise. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Boise. 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 Sydney to Boise?

    For as low as $933, American Airlines can have you in Boise from Sydney in 26h 11m. The distance from Sydney to Boise is about 7894 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Sydney to Boise round-trip?

    United Airlines, at $1,019, was found to be the cheapest airline from Sydney to Boise.. United Airlines is currently priced 16% below the average price you’ll pay for this route.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Sydney to Boise (average of $314). Flying from Sydney to Boise in June is currently the most expensive (average of $399). 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

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Ontario
Meridian
Nampa
Caldwell
McCall

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Top airline flying from Sydney to Boise

Discover the top airline that operate flights from Sydney to Boise. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,019Average$1,308FlexibilityNo cancel feeOn-time69%

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