$80+ Cheap flights from Boise to Austin (BOI - AUS)
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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — AUS
Jan 3 — Jan 101
1 adult, Economy
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Find cheap flights from Boise to Austin with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Austin Bergstrom are usually found in September or January, booked 45 days in advance, depart on a Wednesday or Tuesday and return on a Saturday
Cheap flight deals from Boise to Austin
Cheapest flights from Boise to AustinExplore the most affordable flight options available from Boise to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.
Explore the most affordable flight options available from Boise to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.
This Frontier deal was found by Cheapflights users on 12/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:44 pmBOI - AUS
1 stop10h 30mFrontier
Sun 12/146:55 amAUS - BOI
1 stop5h 54mFrontier
Deal found 12/4![Frontier logo]()
$262
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:50 pmBOI - AUS
1 stop7h 50mAlaska Airlines
Wed 1/76:00 amAUS - BOI
2 stops17h 09mAlaska Airlines
Deal found 12/2![Alaska Airlines logo]()
$275
This Southwest deal was found by Cheapflights users on 12/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:30 pmBOI - AUS
1 stop7h 45mSouthwest
Wed 12/315:35 amAUS - BOI
1 stop6h 50mSouthwest
Deal found 12/3![Southwest logo]()
$305
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:50 pmBOI - AUS
1 stop7h 50mAlaska Airlines
Mon 1/52:56 pmAUS - BOI
1 stop10h 03mAlaska Airlines
Deal found 12/2![Alaska Airlines logo]()
$319
This Frontier deal was found by Cheapflights users on 12/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:44 pmBOI - AUS
1 stop10h 30mFrontier
Fri 12/56:55 amAUS - BOI
1 stop5h 54mFrontier
Deal found 12/4![Frontier logo]()
$353
This Expedia deal was found by Cheapflights users on 12/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:00 amBOI - AUS
1 stop19h 00mMultiple Airlines
Sat 1/36:45 amAUS - BOI
1 stop6h 14mMultiple Airlines
Deal found 12/2![Multiple Airlines logo]()
$405
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:50 pmBOI - AUS
1 stop7h 50mAlaska Airlines
Sun 1/46:00 amAUS - BOI
1 stop18h 59mAlaska Airlines
Deal found 12/3![Alaska Airlines logo]()
$415
This Southwest deal was found by Cheapflights users on 12/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/298:45 pmBOI - AUS
1 stop11h 45mSouthwest
Sun 1/46:40 pmAUS - BOI
1 stop7h 45mSouthwest
Deal found 12/2![Southwest logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1812:38 pmBOI - AUS
1 stop10h 36mMultiple Airlines
Mon 12/227:22 pmAUS - BOI
2 stops42h 30mMultiple Airlines
Deal found 12/3![Multiple Airlines logo]()
$441
Find flight deals from Boise to Austin
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Austin (AUS). 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 December 4, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $154 (Kiwi.com) |
One-way from | $80 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $463 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Austin 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 December 4, 2025.
Use the filters below to find and compare flights from Boise to Austin that are best for you.
Fly from
Boise
Fly to
Austin
Route
Depart
Return
Price
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Thu 2/12
12:54 pm-12:14 am
1 stop10h 20m
Austin Bergstrom
Thu 2/19
10:18 am-11:59 am
2 stops26h 41m
$169
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Wed 2/11
7:25 am-4:00 pm
1 stop7h 35m
Austin Bergstrom
Tue 2/17
6:10 am-1:11 pm
1 stop8h 01m
$171
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Wed 2/11
7:25 am-5:35 pm
1 stop9h 10m
Austin Bergstrom
Wed 2/18
6:15 am-1:59 pm
1 stop8h 44m
$171
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Wed 2/11
7:00 am-7:19 pm
2 stops11h 19m
Austin Bergstrom
Wed 2/18
6:00 am-11:30 pm
1 stop18h 30m
$188
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Wed 2/4
7:00 am-10:48 pm
2 stops14h 48m
Austin Bergstrom
Sat 2/7
3:39 pm-11:42 pm
1 stop9h 03m
$188
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Tue 2/10
7:00 am-7:19 pm
2 stops11h 19m
Austin Bergstrom
Wed 2/18
6:00 am-1:22 pm
2 stops8h 22m
$191
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Tue 2/10
3:03 pm-10:55 pm
1 stop6h 52m
Austin Bergstrom
Sun 2/15
6:10 am-6:22 pm
1 stop13h 12m
$199
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Tue 2/10
7:25 am-9:32 pm
2 stops13h 07m
Austin Bergstrom
Tue 2/17
6:10 am-1:11 pm
1 stop8h 01m
$204
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Thu 3/5
12:54 pm-12:14 am
1 stop10h 20m
Austin Bergstrom
Sun 3/8
6:45 am-12:23 pm
1 stop6h 38m
$217
BoiseAustin
BOI - AUS
BOIAUS
Boise Air Term. Gowen Fld
Sat 2/14
10:45 am-5:49 pm
1 stop6h 04m
Austin Bergstrom
Thu 2/19
5:30 am-12:28 pm
1 stop7h 58m
$219
Showing 1-10 of 18 results
Compare providers for flights from Boise to Austin
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Austin in December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-Austin flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boise-Austin flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Boise-Austin flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Austin flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Austin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boise to Austin
Have a flexible travel schedule? Discover the best time to fly to Austin from Boise 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 Boise to Austin
How far ahead should I book a flight from Boise to Austin?
Use this chart to determine the optimal time to book a round-trip flight from Boise to Austin. Price data was last updated on November 28, 2025.
The best time to book flights from Boise to Austin is 45 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Boise to Austin?
Currently, March is the cheapest month in which you can book a flight from Boise to Austin (average of $119). Flying from Boise to Austin in December is currently the most expensive (average of $279). 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.
What is the cheapest time of day to fly from BOI to AUS?
Find hourly flight availability from Boise to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.
One of the essential ways to save on airfare from Boise to Austin is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 6% on airfare.
What is the cheapest day to fly from Boise to Austin?
Use this chart to determine the cheapest time to fly round-trip from Boise to Austin. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Boise to Austin flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Austin
Get insights into the airlines that provide service to Austin. 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 Austin. Reviews last updated December 4, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Boise to Austin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Boise to Austin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Austin?
Book flights to Austin if you plan to visit one of these locationsCedar Park
Round Rock
San Marcos
Georgetown
Fredericksburg
Pflugerville
Dripping Springs
Canyon Lake
Seguin
Horseshoe Bay
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Alternative routes for Boise to Austin
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Boise to Austin
Discover the top 6 airlines that operate flights from Boise to Austin. 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 December 4, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$240 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$232 | Average$343 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$250 | Average$512 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$265 | Average$421 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$278 | Average$352 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$283 | Average$446 | FlexibilityNo cancel fee | On-time69% |