$125+ Cheap flights from Boise

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 11/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
BOI — SYD
7 Feb — 14 Feb1
1 adult
1 adult, Economy, 0 bags

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Enter your travel dates to find the best prices.

Cheapest flights from Boise
Explore the most affordable flight options available from Boise. Find the lowest fares based on data from user searches, with prices last updated on 8 January 2026.

Wed 4/207:25BOI - AUS
1 stop7h 35mDelta
Wed 11/213:59AUS - BOI
1 stop9h 19mDelta
Deal found 7/1$248
Tue 5/507:05BOI - AUS
2 stops7h 40mSouthwest
Tue 12/518:05AUS - BOI
1 stop6h 15mSouthwest
Deal found 7/1$255
Tue 14/416:05BOI - AUS
1 stop5h 00mSouthwest
Mon 20/418:25AUS - BOI
1 stop6h 05mSouthwest
Deal found 7/1$272
Thu 23/423:36BOI - AUS
1 stop9h 19mDelta
Thu 30/416:42AUS - BOI
1 stop7h 17mDelta
Deal found 6/1$295
Wed 28/109:02BOI - AUS
1 stop7h 57mAlaska Airlines
Sat 31/106:00AUS - BOI
2 stops17h 09mAlaska Airlines
Deal found 6/1$324
Thu 29/110:00BOI - AUS
1 stop6h 59mAlaska Airlines
Mon 2/215:39AUS - BOI
1 stop23h 06mAlaska Airlines
Deal found 5/1$327
Fri 30/106:40BOI - AUS
1 stop7h 20mSouthwest
Tue 3/208:50AUS - BOI
2 stops9h 00mSouthwest
Deal found 5/1$334
Fri 30/113:55BOI - AUS
1 stop9h 04mAlaska Airlines
Tue 3/206:00AUS - BOI
2 stops13h 22mAlaska Airlines
Deal found 6/1$337
Wed 28/116:04BOI - AUS
1 stop23h 35mAlaska Airlines
Sun 1/219:59AUS - BOI
2 stops16h 49mAlaska Airlines
Deal found 7/1$338
Tue 27/107:20BOI - GRK
1 stop7h 56mAlaska Airlines
Sat 31/107:00GRK - BOI
1 stop7h 08mAlaska Airlines
Deal found 6/1$827
Wed 4/211:35BOI - SYD
2 stops25h 50mMultiple Airlines
Wed 11/217:45SYD - BOI
1 stop23h 17mMultiple Airlines
Deal found 7/1$1,783
Tue 24/310:49BOI - SYD
2 stops30h 41mAir New Zealand
Tue 31/310:30SYD - BOI
1 stop26h 43mAir New Zealand
Deal found 6/1$1,833

Find flights from Boise within your budget

 
Find flights departing from Boise that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 8 January 2026. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Sydney

Route

Depart

Return

Price

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 4/2

07:25-16:00

1 stop7h 35m

Austin Bergstrom

Wed 11/2

13:59-22:18

1 stop9h 19m

$248

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 7/4

05:50-13:30

1 stop6h 40m

Austin Bergstrom

Tue 7/4

18:51-23:59

1 stop6h 08m

$248

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 5/5

07:05-15:45

2 stops7h 40m

Austin Bergstrom

Tue 12/5

18:05-23:20

1 stop6h 15m

$255

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 14/4

16:05-22:05

1 stop5h 00m

Austin Bergstrom

Mon 20/4

18:25-23:30

1 stop6h 05m

$272

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 29/1

09:02-17:59

1 stop7h 57m

Austin Bergstrom

Mon 2/2

17:39-23:58

1 stop7h 19m

$295

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 23/4

23:36-09:55

1 stop9h 19m

Austin Bergstrom

Thu 30/4

16:42-22:59

1 stop7h 17m

$295

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 4/2

08:10-22:48

2 stops13h 38m

Austin Bergstrom

Wed 11/2

07:15-15:10

1 stop8h 55m

$324

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 28/1

09:02-17:59

1 stop7h 57m

Austin Bergstrom

Sat 31/1

06:00-22:09

2 stops17h 09m

$324

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 30/1

20:58-19:26

2 stops21h 28m

Austin Bergstrom

Tue 3/2

12:30-21:05

1 stop9h 35m

$327

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 30/1

06:40-15:00

1 stop7h 20m

Austin Bergstrom

Tue 3/2

08:50-16:50

2 stops9h 00m

$334

Flights are sorted by cheapest return flights first.

Deals found on 6/1

Showing 1-10 of 30 results
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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.

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Related info for your journey

Access useful and relevant information related to your journey from Boise. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 8 January 2026.

  • What are the most popular destinations to fly to from Boise?

    For the current month, the most popular flights from Boise are Denver, Cancún, Guadalajara. Denver, Honolulu, Dallas/Fort Worth Airport are the most popular locations from Boise year round.

  • How does Cheapflights help users find flights from Boise?

    900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight from Boise today with Cheapflights!

  • Why should you use Cheapflights to find cheap flight tickets from Boise?

    Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Boise for you. Better yet — we are completely free to use.

  • Can Cheapflights find flights from Boise with no change fees?

    Certainly. Search results for flights from Boise shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

  • Can Cheapflights notify me if prices for flights from Boise become cheaper?

    Yes, Cheapflights offers price alerts on flights from Boise so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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Fly with Cheapflights

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How does Cheapflights help users find flights from Boise?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight from Boise today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Boise?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Boise for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Boise with no change fees?

Certainly. Search results for flights from Boise shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Boise become cheaper?

Yes, Cheapflights offers price alerts on flights from Boise so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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