What is the cheapest airline that flies from Phoenix to Idaho?

Allegiant Air, Hawaiian Airlines, and Alaska Airlines are the most popular carriers operating from Phoenix to Idaho

How many flights depart from Phoenix to Idaho on average per week?

As of July 2025, 53 flights take off from Phoenix and land in Idaho each week. The most common flight departure day for this route is Thu, with 25% of weekly flights taking off on this day.

What airlines fly to Idaho?

Southwest, American Airlines and Alaska Airlines are the top three most popular airlines that fly to Idaho from Phoenix according to our data. Southwest is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 8 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

How many flights depart from Phoenix to Idaho on average per day?

As of July 2025, 7 flights take off from Phoenix and land in Idaho each day. The most common flight departure time for this route is 7:00PM, with 50% of daily flights taking off in the evening.

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?

As of July 2025, there are 8 operators available to choose from 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.

$51 Cheap Flights from Phoenix to Idaho in 2025

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Find the cheapest flights from Phoenix to Idaho

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:31 pm - 9:39 pmAZA-BOI

2h 08mnonstop

10:29 pm - 11:38 pmBOI-AZA

2h 09mnonstop

$82Allegiant Air

Find Deal

Mon, Aug 18 - Mon, Aug 25

4:08 pm - 7:10 pmAZA-BOI

2h 02mnonstop

8:00 pm - 9:07 pmBOI-AZA

2h 07mnonstop

$89Allegiant Air

Find Deal

Fri, Sep 5 - Mon, Sep 8

3:40 pm - 6:45 pmPHX-BOI

2h 05mnonstop

5:30 pm - 10:05 pmBOI-PHX

5h 35m1 stop

$147Southwest

Find Deal

Wed, Oct 22 - Wed, Oct 29

7:00 am - 3:00 pmPHX-BOI

7h 00m1 stop

6:05 pm - 7:17 pmBOI-PHX

2h 12mnonstop

$151Alaska Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 9

9:00 am - 2:25 pmPHX-BOI

4h 25m1 stop

5:30 pm - 10:05 pmBOI-PHX

5h 35m1 stop

$156Southwest

Find Deal

Wed, Oct 22 - Wed, Oct 29

10:35 am - 1:14 pmPHX-GEG

2h 39mnonstop

3:25 pm - 6:01 pmGEG-PHX

2h 36mnonstop

$157American Airlines

Find Deal

Mon, Sep 22 - Fri, Oct 3

2:19 pm - 5:36 pmPHX-BOI

2h 17mnonstop

10:05 am - 4:56 pmBOI-PHX

7h 51m1 stop

$157Alaska Airlines

Find Deal

Tue, Oct 21 - Wed, Oct 29

3:46 pm - 11:13 pmPHX-GEG

7h 27m1 stop

2:35 pm - 10:41 pmGEG-PHX

8h 06m1 stop

$177Delta

Find Deal

Fri, Sep 12 - Mon, Sep 15

3:40 pm - 12:08 amPHX-BOI

7h 28m1 stop

9:00 am - 2:42 pmBOI-PHX

6h 42m1 stop

$188Delta

Find Deal

Mon, Oct 20 - Mon, Oct 27

1:35 pm - 4:45 pmPHX-BOI

2h 10mnonstop

5:15 pm - 6:35 pmBOI-PHX

2h 20mnonstop

$210American Airlines

Find Deal

Tue, Aug 19 - Tue, Aug 26

Frontier flights from Phoenix to Idaho

Our best Frontier deals on Phoenix to Idaho flight tickets

Frontier

Aug 6

PHX7:18 amPhoenix Sky Harbor Intl

27h 28m

1 stop

BOI11:46 amBoise Air Term. Gowen Fld

Aug 10

BOI12:36 pmBoise Air Term. Gowen Fld

20h 51m

1 stop

PHX8:27 amPhoenix Sky Harbor Intl

$215

Find similar

Frontier

Oct 9

PHX6:00 amPhoenix Sky Harbor Intl

4h 53m

1 stop

BOI11:53 amBoise Air Term. Gowen Fld

Oct 12

BOI12:48 pmBoise Air Term. Gowen Fld

11h 41m

1 stop

PHX11:29 pmPhoenix Sky Harbor Intl

$218

Find similar

Frontier

Aug 6

PHX7:18 amPhoenix Sky Harbor Intl

27h 45m

1 stop

GEG11:03 amSpokane

Aug 12

GEG11:51 amSpokane

10h 43m

1 stop

PHX10:34 pmPhoenix Sky Harbor Intl

$220

Find similar

Allegiant Air flights from Phoenix to Idaho

Our best Allegiant Air deals on Phoenix to Idaho flight tickets

Allegiant Air

Aug 18

AZA6:31 pmPhoenix-Mesa Gateway

2h 08m

BOI9:39 pmBoise Air Term. Gowen Fld

Aug 25

BOI10:29 pmBoise Air Term. Gowen Fld

2h 09m

AZA11:38 pmPhoenix-Mesa Gateway

$82

Find similar

Allegiant Air

Sep 5

AZA4:08 pmPhoenix-Mesa Gateway

2h 02m

BOI7:10 pmBoise Air Term. Gowen Fld

Sep 8

BOI8:00 pmBoise Air Term. Gowen Fld

2h 07m

AZA9:07 pmPhoenix-Mesa Gateway

$89

Find similar

Allegiant Air

Aug 25

AZA6:31 pmPhoenix-Mesa Gateway

2h 08m

BOI9:39 pmBoise Air Term. Gowen Fld

Sep 1

BOI10:29 pmBoise Air Term. Gowen Fld

2h 09m

AZA11:38 pmPhoenix-Mesa Gateway

$104

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Mon 8/18

6:31 pm-9:39 pm

Nonstop2h 08m

Boise Air Term. Gowen Fld

Mon 8/25

10:29 pm-11:38 pm

Nonstop2h 09m

$82

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Fri 9/5

4:08 pm-7:10 pm

Nonstop2h 02m

Boise Air Term. Gowen Fld

Mon 9/8

8:00 pm-9:07 pm

Nonstop2h 07m

$89

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 10/22

3:40 pm-6:45 pm

Nonstop2h 05m

Boise Air Term. Gowen Fld

Wed 10/29

5:30 pm-10:05 pm

1 stop5h 35m

$147

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 9/9

7:00 am-3:00 pm

1 stop7h 00m

Boise Air Term. Gowen Fld

Tue 9/9

6:05 pm-7:17 pm

Nonstop2h 12m

$151

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 10/22

9:00 am-2:25 pm

1 stop4h 25m

Boise Air Term. Gowen Fld

Wed 10/29

5:30 pm-10:05 pm

1 stop5h 35m

$156

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Mon 9/22

10:35 am-1:14 pm

Nonstop2h 39m

Spokane

Fri 10/3

3:25 pm-6:01 pm

Nonstop2h 36m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 10/21

2:19 pm-5:36 pm

Nonstop2h 17m

Boise Air Term. Gowen Fld

Wed 10/29

10:05 am-4:56 pm

1 stop7h 51m

$157

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Fri 9/12

3:46 pm-11:13 pm

1 stop7h 27m

Spokane

Mon 9/15

2:35 pm-10:41 pm

1 stop8h 06m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Mon 10/20

3:40 pm-12:08 am

1 stop7h 28m

Boise Air Term. Gowen Fld

Mon 10/27

9:00 am-2:42 pm

1 stop6h 42m

$188

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 8/19

1:35 pm-4:45 pm

Nonstop2h 10m

Boise Air Term. Gowen Fld

Tue 8/26

5:15 pm-6:35 pm

Nonstop2h 20m

$210

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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

Prices

Airlines

Other information

What is the cheapest month to fly to Idaho?

In general, September 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 $204. If you don’t want to visit Idaho in September, then you should wait until October to fly from Phoenix, when ticket prices are also cheap, with an average price of $219.

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

Our data shows that Wednesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $235. 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 $288.

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 $214. 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 $274 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 $257 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 $149 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

Best Price Found	$51
Fastest flight time	2h 00m
Direct flights	Every day
Airports in Idaho	4 airports

The best one-way flight to Idaho from Phoenix in the past 72 hours is $51. The best round-trip flight deal from Phoenix to Idaho found on momondo in the last 72 hours is $82.

The fastest flight from Phoenix to Idaho takes 2h 00m

Direct flights go from Phoenix to Idaho every day.

There are 4 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Hailey Sun Valley-Friedman (SUN)

Search flight deals

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?
As of July 2025, there are 8 operators available to choose from 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 Air	PriceFrom $63	Free Cancellation	Rating 7.2 702 reviews	Search Allegiant Air flights
Spirit Airlines	PriceFrom $87	Free Cancellation	Rating 6.3 8,048 reviews	Search Spirit Airlines flights
Delta	PriceFrom $88	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $136	Free Cancellation	Rating 7.8 2,611 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $142	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $159	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $159	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $196	Free Cancellation	Rating 7.4 8,900 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

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Find better results for your trip to Idaho

Popular cities in Idaho

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Flights to Orlandofrom $54

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Flights to San Franciscofrom $49

Flights to Washington, D.C.from $49

Flights to Bostonfrom $77

Flights to Atlantafrom $29

Flights to Dallasfrom $55

Flights to Seattlefrom $93

Cheap flights from Phoenix to Idaho from $51

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 10/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Phoenix to Idaho

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Frontier flights from Phoenix to Idaho

Our best Frontier deals on Phoenix to Idaho flight tickets

Allegiant Air flights from Phoenix to Idaho

Our best Allegiant Air deals on Phoenix to Idaho flight tickets

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Use the filters below to find and compare flights from Phoenix to Idaho that are best for you.

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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?

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

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

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?

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.

What is the cheapest airline that flies from Phoenix to Idaho?

Allegiant Air, Hawaiian Airlines, and Alaska Airlines are the most popular carriers operating from Phoenix to Idaho

What airlines fly to Idaho?

How many flights depart from Phoenix to Idaho on average per day?

As of July 2025, 7 flights take off from Phoenix and land in Idaho each day. The most common flight departure time for this route is 7:00PM, with 50% of daily flights taking off in the evening.

How many flights depart from Phoenix to Idaho on average per week?

As of July 2025, 53 flights take off from Phoenix and land in Idaho each week. The most common flight departure day for this route is Thu, with 25% of weekly flights taking off on this day.

Cheap Phoenix to Idaho flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Idaho

When did momondo last update prices for flights from Phoenix to Idaho?

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?

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

Best airlines flying from Phoenix to Idaho

Compare and see reviews for airlines that fly from Phoenix to Idaho with momondo

Why use momondo?

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

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

How can momondo help me find flights 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?

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.

Find better results for your trip to Idaho

Popular cities in Idaho

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