BOI - AUS

$121 Find Cheap Flights from Boise to Austin - Compare and Save

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 10/13. 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

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Everything you should know

Cheapest round-trip
$165
Typical prices: $321-$618
Frontier
Thu 8/27Tue 9/1
BOI - AUS • 1 stop
Cheapest one-way
$121
Typical prices: $223-$326
Frontier
Tue 10/13
BOI - AUS • 1 stop
Top airlines
Cheapest • from $165 (round-trip)
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
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Insights
Top layover airports
Cheapest • Avg $282 (round-trip)
Shortest trip • 5h 05m (one-way)
Insights
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 47% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
Good to know
+1
+1
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Good to know
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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, Aug 27 - Tue, Sep 1
Frontier Logo
12:24 pm - 7:30 pm
BOI
-
AUS
6h 06m
1 stop
Frontier Logo
6:15 am - 12:29 pm
AUS
-
BOI
7h 14m
1 stop
$165Frontier
Thu, Aug 27 - Mon, Aug 31
Frontier Logo
12:24 pm - 7:30 pm
BOI
-
AUS
6h 06m
1 stop
Frontier Logo
8:15 pm - 12:29 pm
AUS
-
BOI
17h 14m
1 stop
$181Frontier
Thu, Aug 13 - Wed, Aug 19
Frontier Logo
1:24 pm - 12:07 am
BOI
-
AUS
9h 43m
1 stop
Frontier Logo
8:15 pm - 11:29 am
AUS
-
BOI
16h 14m
1 stop
$215Frontier
Thu, Aug 6 - Tue, Aug 11
Frontier Logo
1:24 pm - 12:07 am
BOI
-
AUS
9h 43m
1 stop
Frontier Logo
6:30 am - 12:29 pm
AUS
-
BOI
6h 59m
1 stop
$225Frontier
Thu, Aug 27 - Tue, Sep 1
Frontier Logo
12:24 pm - 4:39 pm
BOI
-
AUS
27h 15m
2 stops
Frontier Logo
6:15 am - 12:29 pm
AUS
-
BOI
7h 14m
1 stop
$233Frontier
Tue, Aug 4 - Thu, Aug 6
Frontier Logo
1:24 pm - 1:30 pm
BOI
-
AUS
23h 06m
1 stop
Frontier Logo
6:30 am - 12:29 pm
AUS
-
BOI
6h 59m
1 stop
$234Frontier
Thu, Sep 17 - Sun, Sep 20
Multiple Airlines Logo
12:59 pm - 11:59 pm
BOI
-
AUS
10h 00m
1 stop
Multiple Airlines Logo
7:39 pm - 2:57 pm
AUS
-
BOI
20h 18m
2 stops
$239Multiple Airlines
Tue, Aug 4 - Tue, Aug 18
Frontier Logo
1:24 pm - 12:07 am
BOI
-
AUS
9h 43m
1 stop
Frontier Logo
6:15 am - 12:29 pm
AUS
-
BOI
7h 14m
1 stop
$248Frontier
Thu, Aug 27 - Mon, Aug 31
Frontier Logo
12:24 pm - 4:39 pm
BOI
-
AUS
27h 15m
2 stops
Frontier Logo
8:15 pm - 12:29 pm
AUS
-
BOI
17h 14m
1 stop
$250Frontier
Mon, Oct 5 - Mon, Oct 19
Delta Logo
6:00 am - 11:27 am
BOI
-
AUS
4h 27m
1 stop
Delta Logo
7:10 am - 2:56 pm
AUS
-
BOI
8h 46m
1 stop
$251Delta
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.

How much is a round-trip flight from Boise to Austin?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to Austin departing in August.

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 January, where tickets cost $284 (return) on average. On the other hand, the most expensive months are July and March, where the average cost of round-trip tickets is $489 and $468 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 4 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$121
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 18% increase in price.
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 5 days, the lowest price for a flight from Boise to Austin was $121 for a one-way ticket and $165 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 $438 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 $468 and an overall rating of 7.9.

  • 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 4249 reviews
8.6Crew
8.1Boarding
7.5Entertainment
7.0Food
8.0Comfort
Airline reviews

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

10.0 ExcellentK, Jun 2026
SAN - AUS
Read more Southwest reviews

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

SW can't get their wifi right. I upgrade to insure wifi service but the last two trips had intermittent service. Not worth the extra costs.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

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.

It seems as though the provisions are even less. Although SWA used to be an economy Airline, that isn't really the case anymore. I paid over $700. for a round trip to Denver and I could have flown just about any airline for the price. The drinks are now in a 6-ounce cup and with ice I'm sure a can would fill more than 2 cups. However, I am very proud of SWA for using paper rather than continuing to contribute to the millions of plastic cups being used each day. I've thought of this fr many years and am so glad to see it come to fruition, if not by only SWA so far.

Crew was great - friendly and helpful with boarding - letting folks know where overhead space was available thus getting us out of the gate on time.

AC wasn't working then we sat on the tarmac in Austin for 40 minutes waiting for a gate.

I stopped flying southwest a long time ago. I don’t care for their boarding process, especially when I have a family to try and seat together. The early bird check in made it so much easier. As long as you do that, it’s great.

Excellent! Very attentive & helpful during a weather delay to keep people safe, com, and informed!

Issue during taxi lead to two hours of sitting in the tarmac and a lot of miscommunication and confusion from flight crew

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Smaller plane for a longer flight than my first one. Doesn’t make sense.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

They were an hour late and they didn’t have my wheelchair for me

Food service was bare-bone. Better bot to have any at all rather than hand out premade coffees and cookies to random few passengers.

due to delay, we were downgraded in seating, so it was cramped

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

This planes staff was top tier. Everything went great and had a great flight home.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

The flight was delayed, they didn’t even have water for the toilets or for drinks

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

It would have helped if I knew it would be air Canada jazz/rouge. The flight was ok but the planes are older and smaller with no entertainment. Fitting the carry one every one had was tricky and made the process longer. Overall it was ok but I actually booked a company other than air Canada and got them which was disappointing.I prefer American or overseas airlines over Canadian because the experience is usually better

Leave on time. We waited on the plane for hour hours and it was hot and smelly

It was the most un-special flight experience in my life.

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

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.

The plane was very warm and the crew turned on the lights for the entire snack service.

It is okay. Flight was on time to start and early to land

The gate crew did try to help, however they lacked the information as to whether the flight will operate or not. Being delayed 6 hours and in a limbo on whether the flight will operate or not is not fun. The airline having staffing issues is not encouraging at all.

Gossipy flight attendants talked the whole flight about bar hopping and dating.

Best price with timings that suited us. The flight was punctual.

It left on time and arrived a few minutes early. The whole process of checking in, seating (got my upgrade thankfully!), and the meals (superb multi-grain healthy salad) were great. It arrived on time (actually a few minutes early). American continue to keep up its promise of customer service. I love being part of the American traveller family.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

baggage clamed had to wait over a hour and half for all people on my flight it was terrible

My flight was canceled I was promised a reginf still not received.

The confirmation # CK8GNW and my name was not recognized/in Frontier system. I was able to check in on Frintier app so i went to the Frontier ticket agent, at time they told me that my name/ confirmation did not show up as a purchased ticket. I had to purchase a new ticket that cost $289.00 one way.

Worst airline experience. They were rude and kept changing our seats and/or giving our seats away so our family didn’t get to sit with each other. Almost everyone we dealt with at both airports with this airline was rude. The app kept giving us wrong information making things take longer. Dealing with them before TSA can take close to an hour…longer than I’ve ever had to deal with before. Never using this airline again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

They changed the timing , first delayed by 4 hours then went back to 40 mins late, we had to run back to airport to not miss our flight. This is ridiculous

Early arrival. Great landing. Pilot updates. Too cold in plane.

An absolutely fraudulent experience. Extremely unprofessional. Terrible in all ways possible. Rude staff, flight attendants, and deceptive "policies."

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

Information on your arrival and departure airports