$115 Find Cheap Flights from Austin to Idaho - 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 Austin to Idaho departing on 9/14. 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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Cheap Flights from Austin to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop$237
Idaho Falls
Idaho Falls1 stop$413
Hailey
Hailey1 stop$445
Lewiston
Lewiston1 stop$870
Spokane
Spokane1 stop$257
Boise
Boise1 stop$237
Idaho Falls
Idaho Falls1 stop$413
Hailey
Hailey1 stop$445
Lewiston
Lewiston1 stop$870
Spokane
Spokane1 stop$257

Book Cheap Austin to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Austin to Idaho 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 Austin to Idaho

Mon, Aug 17 - Thu, Aug 20
Delta Logo
6:17 pm - 11:53 pm
AUS
-
BOI
6h 36m
1 stop
Delta Logo
3:29 pm - 11:58 pm
BOI
-
AUS
7h 29m
1 stop
$237Delta
Sun, Aug 23 - Sun, Aug 30
American Airlines Logo
6:00 am - 11:16 am
AUS
-
BOI
6h 16m
1 stop
American Airlines Logo
2:49 pm - 9:33 pm
BOI
-
AUS
5h 44m
1 stop
$237American Airlines
Wed, Aug 19 - Mon, Aug 24
Southwest Logo
5:55 pm - 10:25 pm
AUS
-
BOI
5h 30m
1 stop
Southwest Logo
3:50 pm - 11:00 pm
BOI
-
AUS
6h 10m
1 stop
$237Southwest
Sat, Aug 15 - Fri, Aug 21
Southwest Logo
5:50 am - 12:15 pm
AUS
-
BOI
7h 25m
1 stop
Southwest Logo
6:00 am - 12:30 pm
BOI
-
AUS
5h 30m
1 stop
$237Southwest
Fri, Aug 21 - Mon, Aug 24
American Airlines Logo
5:41 pm - 10:11 pm
AUS
-
BOI
5h 30m
1 stop
American Airlines Logo
2:49 pm - 9:33 pm
BOI
-
AUS
5h 44m
1 stop
$237American Airlines
Mon, Sep 14 - Thu, Sep 17
Frontier Logo
8:16 pm - 12:04 pm
AUS
-
BOI
16h 48m
1 stop
Frontier Logo
12:59 pm - 11:59 pm
BOI
-
AUS
10h 00m
1 stop
$242Frontier
Thu, Oct 22 - Sun, Oct 25
Frontier Logo
6:15 am - 11:28 am
AUS
-
BOI
6h 13m
1 stop
Frontier Logo
3:52 pm - 11:36 am
BOI
-
AUS
18h 44m
1 stop
$246Frontier
Mon, Aug 17 - Thu, Aug 27
United Airlines Logo
4:00 pm - 10:36 pm
AUS
-
GEG
8h 36m
1 stop
United Airlines Logo
12:33 pm - 9:59 pm
GEG
-
AUS
7h 26m
1 stop
$257United Airlines
Thu, Aug 20 - Thu, Aug 27
Delta Logo
6:15 am - 10:29 am
AUS
-
GEG
6h 14m
1 stop
Delta Logo
5:15 am - 1:26 pm
GEG
-
AUS
6h 11m
1 stop
$257Delta
Mon, Aug 17 - Thu, Aug 27
United Airlines Logo
2:02 pm - 10:36 pm
AUS
-
GEG
10h 34m
2 stops
United Airlines Logo
12:33 pm - 9:59 pm
GEG
-
AUS
7h 26m
1 stop
$262United Airlines
Booking Insights

KAYAK's insights & trends for Austin to Idaho flights

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

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

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

Flight prices are below average for this route right now.

Flights to Idaho from Austin usually cost between $314 and $408 in August.
The lowest price found in the past 5 days was $237 on Southwest (Aug 15-Aug 21).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Austin to Idaho, 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 Austin to Idaho is January, when tickets cost $314 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $508 and $499 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Austin to Idaho, 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 Austin to Idaho, you should book around 4 weeks before departure, which saves you about 51% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Find deals

Good to know

Low season

April

Cheapest flight

$115
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Austin to Boise

FAQs - booking Idaho flights

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

    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 Austin to Idaho.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Austin to Idaho 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 Austin to Idaho?

    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 from Austin to Idaho with an airline and back with another airline.

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

    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 from Austin to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Information on your arrival and departure airports

Austin (AUS)