Cheap flights from Phoenix to Idaho from $66

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Phoenix to Idaho departing on 2/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Phoenix to Idaho

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
2:35 pm - 4:47 pm
AZA
-
BOI
2h 12mnonstop
Allegiant Air Logo
5:37 pm - 7:53 pm
BOI
-
AZA
2h 16mnonstop
$114Allegiant Air
Fri, Feb 27 - Mon, Mar 2
Southwest Logo
7:00 pm - 10:05 pm
PHX
-
BOI
2h 05mnonstop
Southwest Logo
4:50 pm - 5:55 pm
BOI
-
PHX
2h 05mnonstop
$140Southwest
Sat, May 2 - Sat, May 16
Delta Logo
5:35 pm - 11:45 pm
PHX
-
BOI
5h 10m
1 stop
Delta Logo
7:30 pm - 11:58 pm
BOI
-
PHX
5h 28m
1 stop
$151Delta
Thu, Mar 26 - Thu, Apr 2
Alaska Airlines Logo
3:18 pm - 6:30 pm
PHX
-
BOI
2h 12mnonstop
Alaska Airlines Logo
1:25 pm - 2:36 pm
BOI
-
PHX
2h 11mnonstop
$157Alaska Airlines
Wed, Apr 29 - Sat, May 2
Alaska Airlines Logo
3:18 pm - 6:30 pm
PHX
-
BOI
2h 12mnonstop
Alaska Airlines Logo
6:00 am - 11:14 am
BOI
-
PHX
6h 14m
1 stop
$167Alaska Airlines
Wed, Apr 29 - Sat, May 2
American Airlines Logo
8:25 pm - 11:41 pm
PHX
-
BOI
2h 16mnonstop
American Airlines Logo
2:14 pm - 3:25 pm
BOI
-
PHX
2h 11mnonstop
$173American Airlines
Thu, Apr 9 - Sat, Apr 11
United Airlines Logo
6:00 am - 1:44 pm
PHX
-
SUN
6h 44m
1 stop
United Airlines Logo
1:29 pm - 5:59 pm
SUN
-
PHX
5h 30m
1 stop
$247United Airlines
Tue, Mar 24 - Wed, Mar 25
Delta Logo
7:15 am - 2:55 pm
PHX
-
JAC
7h 40m
1 stop
Delta Logo
5:50 pm - 11:39 pm
JAC
-
PHX
6h 49m
1 stop
$269Delta
Wed, Mar 4 - Wed, Mar 11
United Airlines Logo
6:00 am - 1:49 pm
PHX
-
JAC
6h 49m
1 stop
United Airlines Logo
8:00 am - 12:14 pm
JAC
-
PHX
5h 14m
1 stop
$288United Airlines
Sun, Jun 7 - Sat, Jun 13
American Airlines Logo
9:13 pm - 11:24 pm
PHX
-
IDA
2h 11mnonstop
American Airlines Logo
6:05 am - 7:32 am
IDA
-
PHX
2h 27mnonstop
$291American Airlines
Tue, Mar 3 - Tue, Mar 10

Allegiant Air flights from Phoenix to Idaho

Our best Allegiant Air deals on Phoenix to Idaho flight tickets
Allegiant Air
Feb 27
AZA2:35 pmPhoenix-Mesa Gateway
2h 12m
BOI4:47 pmBoise Air Term. Gowen Fld
Mar 2
BOI5:37 pmBoise Air Term. Gowen Fld
2h 16m
AZA7:53 pmPhoenix-Mesa Gateway
$114
Allegiant Air
Mar 27
AZA2:01 pmPhoenix-Mesa Gateway
2h 12m
BOI5:13 pmBoise Air Term. Gowen Fld
Mar 30
BOI6:03 pmBoise Air Term. Gowen Fld
2h 10m
AZA7:13 pmPhoenix-Mesa Gateway
$141
Allegiant Air
Feb 13
AZA2:38 pmPhoenix-Mesa Gateway
2h 13m
BOI4:51 pmBoise Air Term. Gowen Fld
Feb 16
BOI5:41 pmBoise Air Term. Gowen Fld
2h 17m
AZA7:58 pmPhoenix-Mesa Gateway
$180

Southwest flights from Phoenix to Idaho

Our best Southwest deals on Phoenix to Idaho flight tickets
Southwest
May 2
PHX7:00 pmPhoenix Sky Harbor Intl
2h 05m
BOI10:05 pmBoise Air Term. Gowen Fld
May 16
BOI4:50 pmBoise Air Term. Gowen Fld
2h 05m
PHX5:55 pmPhoenix Sky Harbor Intl
$140
Southwest
May 2
PHX2:20 pmPhoenix Sky Harbor Intl
6h 35m
1 stop
BOI9:55 pmBoise Air Term. Gowen Fld
May 16
BOI7:05 amBoise Air Term. Gowen Fld
2h 05m
PHX8:10 amPhoenix Sky Harbor Intl
$150
Southwest
May 2
PHX2:20 pmPhoenix Sky Harbor Intl
6h 35m
1 stop
BOI9:55 pmBoise Air Term. Gowen Fld
May 16
BOI3:25 pmBoise Air Term. Gowen Fld
6h 00m
1 stop
PHX8:25 pmPhoenix Sky Harbor Intl
$160

momondo Fare Finder

 
Customize your flight search to find flights from Phoenix to Idaho 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, momondo users made 832,500 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Phoenix to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Fri 2/27

2:35 pm-4:47 pm

Nonstop2h 12m

Boise Air Term. Gowen Fld

Mon 3/2

5:37 pm-7:53 pm

Nonstop2h 16m

$114

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 5/2

7:00 pm-10:05 pm

Nonstop2h 05m

Boise Air Term. Gowen Fld

Sat 5/16

4:50 pm-5:55 pm

Nonstop2h 05m

$140

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 3/26

5:35 pm-11:45 pm

1 stop5h 10m

Boise Air Term. Gowen Fld

Thu 4/2

7:30 pm-11:58 pm

1 stop5h 28m

$151

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 4/29

3:18 pm-6:30 pm

Nonstop2h 12m

Boise Air Term. Gowen Fld

Sat 5/2

1:25 pm-2:36 pm

Nonstop2h 11m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 4/29

3:18 pm-6:30 pm

Nonstop2h 12m

Boise Air Term. Gowen Fld

Sat 5/2

6:00 am-11:14 am

1 stop6h 14m

$167

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 4/9

8:25 pm-11:41 pm

Nonstop2h 16m

Boise Air Term. Gowen Fld

Sat 4/11

2:14 pm-3:25 pm

Nonstop2h 11m

$173

PhoenixHailey

PHX - SUN

PHXSUN

Phoenix Sky Harbor Intl

Tue 3/24

6:00 am-1:44 pm

1 stop6h 44m

Hailey Sun Valley-Friedman

Wed 3/25

1:29 pm-5:59 pm

1 stop5h 30m

$247

PhoenixJackson

PHX - JAC

PHXJAC

Phoenix Sky Harbor Intl

Wed 3/4

7:15 am-2:55 pm

1 stop7h 40m

Jackson Hole

Wed 3/11

5:50 pm-11:39 pm

1 stop6h 49m

$269

PhoenixJackson

PHX - JAC

PHXJAC

Phoenix Sky Harbor Intl

Sun 6/7

6:00 am-1:49 pm

1 stop6h 49m

Jackson Hole

Sat 6/13

8:00 am-12:14 pm

1 stop5h 14m

$288

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Tue 3/3

9:13 pm-11:24 pm

Nonstop2h 11m

Idaho Falls Fanning Field

Tue 3/10

6:05 am-7:32 am

Nonstop2h 27m

$291

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Idaho from

How to get the cheapest flight ticket from Phoenix to Idaho

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Idaho?

In general, January is the cheapest month to fly from Phoenix to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $196. If you don’t want to visit Idaho in January, then you should wait until September to fly from Phoenix, when ticket prices are also cheap, with an average price of $197.

What is the cheapest day to depart on your flight to Idaho?

Our data shows that Thursday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $226. On the other hand, Sunday is the most expensive day to depart from Phoenix because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $317.

What is the cheapest time of day to depart on your flight to Idaho?

According to our data, the cheapest time of day to fly to Idaho is in the afternoon. momondo users have found flights departing from Phoenix to Idaho in the afternoon for as low as $197. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Idaho, so prices are often more expensive at around $282 per ticket.

What is the cheapest Phoenix to Idaho flight route?

Fly from Phoenix-Mesa Gateway to Boise Air Term. Gowen Fld for the best Phoenix - Idaho flight prices

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

You are more likely to see cheaper flights to Idaho from Phoenix when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $244 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Phoenix for as low as $182 on momondo.

What cabin class options are available on Phoenix to Idaho flights?

There are 4 cabin classes available to choose from on Phoenix to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Phoenix to Idaho flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Phoenix to Idaho

Fastest flight time

2h 00m

Direct flights

Every day

Airports in Idaho

27 airports
The fastest flight from Phoenix to Idaho takes 2h 00m
Direct flights go from Phoenix to Idaho every day.
There are 27 airports in Idaho. From Phoenix there are direct flights to Idaho Falls Fanning Field (IDA), Boise Air Term. Gowen Fld (BOI), Hailey Sun Valley-Friedman (SUN).
  • When did momondo last update prices for flights from Phoenix to Idaho?

    Prices for flights from Phoenix to Idaho were last updated today.

  • How many operators does momondo search for flights from Phoenix to Idaho?

  • How old do you have to be to fly from Phoenix to Idaho?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Phoenix to Idaho.

  • What documentation or ID do you need to fly to Idaho?

    The required travel and health documents for your Idaho trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Phoenix to Idaho

Compare and see reviews for airlines that fly from Phoenix to Idaho with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $56Free CancellationRating
7.2
709 reviews
Search Allegiant Air flights
DeltaPriceFrom $81Free CancellationRating
7.9
8,137 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $136Free CancellationRating
7.8
2,830 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $141Free CancellationRating
8.0
4,273 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $147Free CancellationRating
8.0
11,832 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $156Free CancellationRating
7.2
11,215 reviews
Search American Airlines flights
United AirlinesPriceFrom $247Free CancellationRating
7.4
9,232 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Phoenix to Idaho?

Finding the right flight to Idaho from Phoenix is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho quick and easy, saving you time and money.

Can I find flights from Phoenix to Idaho with flexible booking policies on momondo?

Flights from Phoenix to Idaho with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Phoenix to Idaho?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Phoenix to Idaho.

I’m not ready to book a flight from Phoenix to Idaho right now. Can momondo alert me if prices change?

Price alerts on flights to Idaho from Phoenix are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Idaho trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 3/5
Thu 3/12

Find better results for your trip to Idaho

Popular cities in Idaho

Popular flights according to clicks in the last 7 days on momondo