$166+ Cheap flights from Boise

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/3. 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
20 Mar — 27 Mar1
1 adult
1 adult, Economy, 0 bags

Find flights from Boise

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 18 February 2026.

Sat 18/414:22
BOI
-
AUS
1 stop9h 12m
Alaska Airlines
Sat 25/406:00
AUS
-
BOI
1 stop13h 34m
Alaska Airlines
Deal found 14/2$372
Thu 23/405:40
BOI
-
AUS
2 stops11h 34m
Delta
Sat 25/406:00
AUS
-
BOI
1 stop15h 00m
Delta
Deal found 14/2$379
Tue 21/408:59
BOI
-
AUS
2 stops11h 16m
Delta
Tue 28/413:30
AUS
-
BOI
2 stops9h 54m
Delta
Deal found 14/2$386
Tue 10/306:15
BOI
-
AUS
1 stop5h 42m
United Airlines
Wed 11/316:54
AUS
-
BOI
1 stop6h 49m
United Airlines
Deal found 14/2$392
Fri 1/516:27
BOI
-
AUS
1 stop23h 22m
Alaska Airlines
Mon 4/506:00
AUS
-
BOI
1 stop18h 02m
Alaska Airlines
Deal found 15/2$415
Tue 17/307:07
BOI
-
AUS
1 stop7h 36m
United Airlines
Tue 24/305:30
AUS
-
BOI
1 stop5h 36m
United Airlines
Deal found 17/2$417
Sat 28/314:40
BOI
-
AUS
1 stop5h 26m
United Airlines
Tue 31/307:00
AUS
-
BOI
2 stops9h 28m
United Airlines
Deal found 17/2$423
Mon 4/506:00
BOI
-
AUS
1 stop7h 39m
Alaska Airlines
Mon 11/506:00
AUS
-
BOI
1 stop18h 59m
Alaska Airlines
Deal found 17/2$429
Sat 28/311:10
BOI
-
AUS
1 stop11h 30m
Southwest
Mon 30/320:40
AUS
-
BOI
1 stop5h 40m
Southwest
Deal found 17/2$439
Fri 17/415:44
BOI
-
AUS
1 stop7h 04m
Delta
Sun 19/406:00
AUS
-
BOI
1 stop8h 12m
Delta
Deal found 15/2$457
Tue 3/307:15
BOI
-
AUS
2 stops11h 00m
Alaska Airlines
Wed 11/319:00
AUS
-
BOI
1 stop15h 40m
Alaska Airlines
Deal found 15/2$460
Tue 26/519:05
BOI
-
SYD
2 stops21h 40m
Air New Zealand
Tue 9/609:55
SYD
-
BOI
2 stops28h 10m
Air New Zealand
Deal found 16/2$1,588

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 18 February 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

Mon 20/4

14:22-00:34

1 stop9h 12m

Austin Bergstrom

Sat 25/4

06:00-18:34

1 stop13h 34m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 18/4

13:52-23:48

1 stop8h 56m

Austin Bergstrom

Thu 30/4

11:30-21:24

1 stop10h 54m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 28/3

05:52-15:35

1 stop8h 43m

Austin Bergstrom

Tue 31/3

06:03-13:05

1 stop8h 02m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 18/4

14:22-00:34

1 stop9h 12m

Austin Bergstrom

Sat 25/4

06:00-18:34

1 stop13h 34m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 1/5

05:40-13:25

1 stop6h 45m

Austin Bergstrom

Mon 4/5

17:55-00:17

1 stop7h 22m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Mon 20/4

07:24-23:48

1 stop15h 24m

Austin Bergstrom

Thu 30/4

17:55-00:17

1 stop7h 22m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 22/4

07:24-16:50

1 stop8h 26m

Austin Bergstrom

Sat 25/4

06:00-16:14

1 stop11h 14m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 24/4

05:40-13:25

1 stop6h 45m

Austin Bergstrom

Fri 1/5

06:00-13:12

1 stop8h 12m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 25/3

05:52-13:30

1 stop6h 38m

Austin Bergstrom

Tue 31/3

06:03-13:05

1 stop8h 02m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 22/4

13:52-23:48

1 stop8h 56m

Austin Bergstrom

Sun 26/4

06:00-21:24

1 stop16h 24m

$372

Flights are sorted by cheapest return flights first.

Deals found on 16/2

Showing 1-10 of 25 results
1
2
3

Best time to book a flight from Boise

Have a flexible travel schedule? Discover the best time to fly 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.

Travel insights for flights from Boise

Get recent, data-driven insights about flights from Boise including ideal travel times, pricing trends, and more.
No data available for this route at this time. Please check back soon.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 18 February 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, Dallas/Fort Worth Airport. 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.

See more FAQs

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.