BOI - AUS

$85 Find Cheap Flights from Boise to Austin

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Austin departing on 3/26. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Austin

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Austin.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Austin.
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Everything you should know

Cheapest round-trip
$190
Overall average: $348
Frontier
Thu 4/9Sun 4/12
BOI - AUS • 1 stop
Cheapest one-way
$85
Typical prices: $273-$386
Frontier
Thu 3/26
BOI - AUS • 1 stop
Top airlines
Frontier
Cheapest • from $190 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boise and Austin. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
San Diego (SAN)
Cheapest • Avg $282 (round-trip)
Las Vegas (LAS)
Shortest trip • 5h 24m (one-way)
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 22% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Austin!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Austin (BOI-AUS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Austin that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to Austin

Thu, Apr 9 - Sun, Apr 12
Frontier Logo
12:03 pm - 12:21 am
BOI
-
AUS
11h 18m
1 stop
Frontier Logo
6:45 am - 11:08 am
AUS
-
BOI
5h 23m
1 stop
$190Frontier
Thu, Apr 9 - Sun, Apr 12
Frontier Logo
12:03 pm - 12:21 am
BOI
-
AUS
11h 18m
1 stop
Frontier Logo
6:45 am - 11:08 am
AUS
-
BOI
5h 23m
1 stop
$191Frontier
Thu, Mar 26 - Sat, Mar 28
Frontier Logo
12:15 pm - 12:16 am
BOI
-
AUS
11h 01m
1 stop
Frontier Logo
10:45 pm - 11:20 am
AUS
-
BOI
13h 35m
1 stop
$202Frontier
Tue, Mar 24 - Tue, Mar 31
Delta Logo
1:45 pm - 11:53 pm
BOI
-
AUS
9h 08m
1 stop
Delta Logo
6:06 pm - 11:45 pm
AUS
-
BOI
6h 39m
1 stop
$227Delta
Tue, Mar 24 - Tue, Mar 31
Delta Logo
1:45 pm - 11:53 pm
BOI
-
AUS
9h 08m
1 stop
Delta Logo
1:10 pm - 11:45 pm
AUS
-
BOI
11h 35m
2 stops
$232Delta
Wed, Mar 25 - Wed, Apr 1
Delta Logo
7:30 am - 6:12 pm
BOI
-
AUS
9h 42m
2 stops
Delta Logo
7:29 am - 6:43 pm
AUS
-
BOI
12h 14m
2 stops
$237Delta
Thu, May 7 - Sun, May 10
Frontier Logo
11:53 am - 12:21 am
BOI
-
AUS
11h 28m
1 stop
Frontier Logo
6:45 am - 11:08 am
AUS
-
BOI
5h 23m
1 stop
$240Frontier
Thu, Apr 30 - Mon, May 4
Alaska Airlines Logo
6:00 am - 12:24 am
BOI
-
AUS
17h 24m
1 stop
Alaska Airlines Logo
6:00 am - 11:02 pm
AUS
-
BOI
18h 02m
1 stop
$247Alaska Airlines
Tue, Apr 7 - Tue, Apr 14
Hawaiian Airlines Logo
4:15 pm - 12:34 am
BOI
-
AUS
7h 19m
1 stop
Hawaiian Airlines Logo
4:32 pm - 11:47 pm
AUS
-
BOI
8h 15m
1 stop
$250Hawaiian Airlines
Fri, May 1 - Mon, May 4
Alaska Airlines Logo
6:08 pm - 2:39 pm
BOI
-
AUS
19h 31m
1 stop
Alaska Airlines Logo
6:00 am - 3:33 pm
AUS
-
BOI
10h 33m
1 stop
$256Alaska Airlines
Booking Insights

KAYAK's insights & trends for Boise to Austin flights

Get data-powered insights and trends into flights from Boise to Austin to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boise to Austin?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Austin, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boise to Austin is September, where tickets cost $282 (return) on average. On the other hand, the most expensive months are March and February, where the average cost of round-trip tickets is $467 and $432 respectively.

How far in advance should I book a flight from Boise to Austin?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to Austin, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boise to Austin, you should book around 2 weeks before departure, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$85
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Boise to Austin

When to book flights from Boise to Austin

Are your dates flexible? Find out the best times to travel from Boise to Austin based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boise to Austin

  • What is the cheapest flight from Boise to Austin?

    In the last 3 days, the lowest price for a flight from Boise to Austin was $85 for a one-way ticket and $190 for a round-trip.

  • Do I need a passport to fly between Boise and Austin?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Boise to Austin?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boise to Austin?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Boise and Austin, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Boise to Austin, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Boise to Austin are Southwest and Alaska Airlines. With an average price for the route of $376 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $478 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Boise to Austin?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boise to Austin.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boise to Austin?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Austin from Boise is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boise to Austin?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Austin with an airline and back to Boise with another airline. Booking your flights between Boise and AUS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boise to Austin?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Austin from Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Boise to Austin

 
See real verified KAYAK customer reviews for airlines flying from Boise to Austin. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boise to Austin? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4300 reviews
8.6Crew
7.5Entertainment
8.1Boarding
8.0Comfort
7.0Food
Airline reviews

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

4.0 Okaybyron, Feb 2026
DAL - SAT
Read more Southwest reviews

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

No delays and arrived to destination 30 min early. Staff was super friendly.

Everything a cheap airline should be at normal airline rates.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

Never got on it. Was re-routed through Detroit and am still in airports 12 hours later waiting for my connecting plane to arrive.

Delta has too many delays now days. It is 1:06 am now. I was supposed to land in Norfolk at 10:30 pm. I got re-booked through Detroit and I’m still in Detroit. I hope to be landed in Norfolk by 3am. I’ve been in airports for 12 hours as of right now. There is a weather delay now but most delays lately have been maintenance.

Very Very late. Subsequent flights left an hour before ours

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Very old flight - time to retire it for newer airplanes

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Everything except the food and entertainment. It was a great experience though

Delayed, toilets did not flush, pilot parked to far away from Gate

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

United is an incompetent airline. They parked the plane on the tarmac for an hour after arriving because they “didn’t have a gate available” it was actually some sort of lie because as we de planed there were approximately 9 open and manned and empty gates that we walked past. Many people on the flight missed connections for the hour long sit on the tarmac. Utterly baffling and incompetent behavior from United flight ops.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

I am an AA flyer for a very long time... AA has yet to disappoint.

Arriving plane went to wrong gate. Flight Attendant was late. Was in no Hurry when he arrived. Flight was fine. Plane had to wait 20 minutes to get assigned a gate due to designated gate tied up. barely connected.. Boarded extremely late on final leg of trip.

See prior comment about how Kayak mishandled my reservation and delayed my arrival by 6 hours.

Generally good. Flight left on time and the seats are comfortable. Plenty of space in front if you in you choose a comfort plus seat, completely worth spending the extra money given the amount of hours the flight lasts. The food tastes good but I would say it’s a the amount is too little. The crew was friendly and efficient. There was a some turbulence at different points into the flight. American Airlines has good deals to NZ if you book with plenty of time before you plan on going.

I am very appreciative of the help provided to me by Dennis and Whitney. I had lost my phone at EWR airport and they were very kind in assisting me. This included advice on how to file a report and also helping me connect with family. The pilot was also great about keeping passengers updated on the flight progress with regular communications over the system.

The screens were inoperable for movies and such, but everything else was just fine

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

Everything you need to know for your flight from Boise to Austin

Information on your arrival and departure airports