$139+ 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 9/4. 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
10 Apr — 17 Apr1
1 adult
1 adult, Economy, 0 bags

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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 11 March 2026.

Tue 7/413:45
BOI
-
AUS
1 stop9h 08m
Delta
Tue 14/406:00
AUS
-
BOI
1 stop8h 12m
Delta
Deal found 7/3$319
Mon 4/519:20
BOI
-
AUS
1 stop18h 19m
Alaska Airlines
Mon 11/506:00
AUS
-
BOI
1 stop7h 35m
Alaska Airlines
Deal found 6/3$346
Tue 14/414:22
BOI
-
AUS
1 stop9h 12m
Alaska Airlines
Sat 18/407:20
AUS
-
BOI
1 stop10h 50m
Alaska Airlines
Deal found 8/3$373
Thu 14/515:14
BOI
-
AUS
1 stop7h 45m
Delta
Tue 19/506:00
AUS
-
BOI
1 stop6h 35m
Delta
Deal found 10/3$376
Wed 6/510:41
BOI
-
AUS
2 stops11h 54m
Delta
Sat 9/506:00
AUS
-
BOI
1 stop6h 35m
Delta
Deal found 10/3$383
Tue 14/414:37
BOI
-
AUS
1 stop5h 38m
United Airlines
Sat 18/411:13
AUS
-
BOI
1 stop6h 35m
United Airlines
Deal found 10/3$390
Wed 1/413:45
BOI
-
AUS
1 stop9h 08m
Delta
Mon 6/406:03
AUS
-
BOI
1 stop8h 02m
Delta
Deal found 8/3$401
Tue 14/406:00
BOI
-
AUS
2 stops8h 20m
Southwest
Sat 18/415:15
AUS
-
BOI
2 stops9h 00m
Southwest
Deal found 10/3$404
Tue 14/413:41
BOI
-
GRK
1 stop7h 11m
Alaska Airlines
Sat 18/413:08
GRK
-
BOI
2 stops11h 48m
Alaska Airlines
Deal found 8/3$1,109
Tue 21/419:03
BOI
-
SYD
2 stops21h 42m
Air New Zealand
Tue 28/407:50
SYD
-
BOI
2 stops31h 11m
Air New Zealand
Deal found 7/3$1,535
Mon 20/419:05
BOI
-
SYD
1 stop20h 00m
Multiple Airlines
Sun 26/417:50
SYD
-
BOI
1 stop34h 44m
Multiple Airlines
Deal found 6/3$1,549
Sun 24/516:10
BOI
-
SYD
1 stop22h 45m
American Airlines
Sun 7/612:00
SYD
-
BOI
1 stop26h 49m
American Airlines
Deal found 6/3$1,566

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 11 March 2026. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Route

Depart

Return

Price

Cheapest return flight

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 14/4

14:22-00:34

1 stop9h 12m

Austin Bergstrom

Sat 18/4

07:20-17:10

1 stop10h 50m

$373

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 1/4

13:45-23:53

1 stop9h 08m

Austin Bergstrom

Mon 6/4

06:03-13:05

1 stop8h 02m

$401

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 20/5

14:00-22:35

1 stop7h 35m

Austin Bergstrom

Wed 27/5

18:55-23:30

1 stop5h 35m

$442

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 2/4

06:15-13:08

1 stop5h 53m

Austin Bergstrom

Sat 4/4

14:20-21:34

2 stops8h 14m

$457

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 3/4

10:25-17:22

1 stop5h 57m

Austin Bergstrom

Mon 6/4

06:03-13:05

1 stop8h 02m

$468

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 3/4

07:11-15:47

1 stop7h 36m

Austin Bergstrom

Fri 10/4

16:43-21:22

1 stop5h 39m

$497

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 14/4

07:11-21:15

2 stops13h 04m

Austin Bergstrom

Sat 18/4

07:40-16:48

2 stops10h 08m

$518
Fastest return journey

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 23/4

16:20-22:10

1 stop4h 50m

Austin Bergstrom

Mon 27/4

19:20-01:00

1 stop6h 40m

$525

BoiseKilleen

BOI - GRK

BOIGRK

Boise Air Term. Gowen Fld

Tue 14/4

13:41-21:52

1 stop7h 11m

Killeen Fort Hood Regional

Sat 18/4

13:08-23:56

2 stops11h 48m

$1,109

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Sun 24/5

14:05-06:55

1 stop24h 50m

Sydney Kingsford Smith

Mon 8/6

10:20-16:44

1 stop22h 24m

$1,570

Flights are sorted by cheapest return flights first.

Deals found on 7/3

Showing 1-10 of 39 resultsSorted by cheapest first
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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.

Travel insights for flights from Boise

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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 11 March 2026.

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

    For the current month, the most popular flights from Boise are Dallas/Fort Worth Airport, Denver, Spokane. Denver, Dallas/Fort Worth Airport, Honolulu 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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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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