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

Allegiant Air, Frontier, 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 November 2025, 92 flights take off from Phoenix and land in Idaho each week. The most common flight departure day for this route is Mon, with 23% 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 7 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 November 2025, 13 flights take off from Phoenix and land in Idaho each day. The most common flight departure time for this route is 9:00AM, with 40% of daily flights taking off at noon.

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 November 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.

$49 Cheap Flights from Phoenix to Idaho in 2025/26

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4:51 pm - 6:46 pmPHX-GEG

2h 55mnonstop

7:37 pm - 11:24 pmGEG-PHX

2h 47mnonstop

$113Frontier

Find Deal

Thu, Jan 15 - Sun, Jan 18

7:00 am - 11:34 amPHX-GEG

5h 34m1 stop

7:37 pm - 11:24 pmGEG-PHX

2h 47mnonstop

$119Frontier

Find Deal

Thu, Jan 15 - Sun, Jan 18

8:59 pm - 11:15 pmPHX-BOI

2h 16mnonstop

6:07 pm - 8:17 pmBOI-PHX

2h 10mnonstop

$157Alaska Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

10:48 am - 1:12 pmPHX-BOI

2h 24mnonstop

3:39 pm - 10:51 pmBOI-PHX

7h 12m1 stop

$161Alaska Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 6

12:05 pm - 8:12 pmPHX-BOI

8h 07m1 stop

10:38 am - 5:35 pmBOI-PHX

6h 57m1 stop

$173Delta

Find Deal

Fri, Jan 16 - Tue, Jan 20

4:42 pm - 11:59 pmPHX-BOI

7h 17m1 stop

11:20 am - 5:13 pmBOI-PHX

5h 53m1 stop

$175Delta

Find Deal

Fri, Jan 23 - Wed, Jan 28

11:51 am - 2:08 pmPHX-BOI

2h 17mnonstop

2:52 pm - 5:10 pmBOI-PHX

2h 18mnonstop

$178American Airlines

Find Deal

Fri, Jan 16 - Tue, Jan 20

6:45 am - 11:25 amPHX-BOI

4h 40m1 stop

8:05 am - 10:20 amBOI-PHX

2h 15mnonstop

$188Southwest

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Tue, Dec 2 - Tue, Dec 16

6:45 am - 11:25 amPHX-BOI

4h 40m1 stop

5:15 am - 11:00 amBOI-PHX

5h 45m1 stop

$197Southwest

Find Deal

Tue, Dec 2 - Tue, Dec 16

3:19 pm - 5:15 pmPHX-GEG

2h 56mnonstop

6:33 am - 10:25 amGEG-PHX

2h 52mnonstop

$206American Airlines

Find Deal

Sun, Jan 18 - Tue, Jan 20

Alaska Airlines flights from Phoenix to Idaho

Our best Alaska Airlines deals on Phoenix to Idaho flight tickets

Alaska Airlines

Dec 4

PHX8:59 pmPhoenix Sky Harbor Intl

2h 16m

BOI11:15 pmBoise Air Term. Gowen Fld

Dec 8

BOI6:07 pmBoise Air Term. Gowen Fld

2h 10m

PHX8:17 pmPhoenix Sky Harbor Intl

$157

Find similar

Alaska Airlines

Dec 6

PHX10:48 amPhoenix Sky Harbor Intl

2h 24m

BOI1:12 pmBoise Air Term. Gowen Fld

Dec 6

BOI3:39 pmBoise Air Term. Gowen Fld

7h 12m

1 stop

PHX10:51 pmPhoenix Sky Harbor Intl

$161

Find similar

Alaska Airlines

Jan 6

PHX4:41 pmPhoenix Sky Harbor Intl

7h 18m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Jan 11

BOI12:21 pmBoise Air Term. Gowen Fld

2h 08m

PHX2:29 pmPhoenix Sky Harbor Intl

$163

Find similar

Delta flights from Phoenix to Idaho

Our best Delta deals on Phoenix to Idaho flight tickets

Delta

Jan 16

PHX12:05 pmPhoenix Sky Harbor Intl

8h 07m

1 stop

BOI8:12 pmBoise Air Term. Gowen Fld

Jan 20

BOI10:38 amBoise Air Term. Gowen Fld

6h 57m

1 stop

PHX5:35 pmPhoenix Sky Harbor Intl

$173

Find similar

Delta

Jan 23

PHX4:42 pmPhoenix Sky Harbor Intl

7h 17m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Jan 28

BOI11:20 amBoise Air Term. Gowen Fld

5h 53m

1 stop

PHX5:13 pmPhoenix Sky Harbor Intl

$175

Find similar

Delta

Dec 3

PHX2:40 pmPhoenix Sky Harbor Intl

7h 36m

1 stop

BOI10:16 pmBoise Air Term. Gowen Fld

Dec 6

BOI5:20 amBoise Air Term. Gowen Fld

5h 47m

1 stop

PHX11:07 amPhoenix Sky Harbor Intl

$177

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 1/15

4:51 pm-6:46 pm

Nonstop2h 55m

Spokane

Sun 1/18

7:37 pm-11:24 pm

Nonstop2h 47m

$113

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 1/15

7:00 am-11:34 am

1 stop5h 34m

Spokane

Sun 1/18

7:37 pm-11:24 pm

Nonstop2h 47m

$119

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 12/4

8:59 pm-11:15 pm

Nonstop2h 16m

Boise Air Term. Gowen Fld

Mon 12/8

6:07 pm-8:17 pm

Nonstop2h 10m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 12/6

10:48 am-1:12 pm

Nonstop2h 24m

Boise Air Term. Gowen Fld

Sat 12/6

3:39 pm-10:51 pm

1 stop7h 12m

$161

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 1/16

12:05 pm-8:12 pm

1 stop8h 07m

Boise Air Term. Gowen Fld

Tue 1/20

10:38 am-5:35 pm

1 stop6h 57m

$173

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 1/23

4:42 pm-11:59 pm

1 stop7h 17m

Boise Air Term. Gowen Fld

Wed 1/28

11:20 am-5:13 pm

1 stop5h 53m

$175

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 1/16

11:51 am-2:08 pm

Nonstop2h 17m

Boise Air Term. Gowen Fld

Tue 1/20

2:52 pm-5:10 pm

Nonstop2h 18m

$178

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 12/2

6:45 am-11:25 am

1 stop4h 40m

Boise Air Term. Gowen Fld

Tue 12/16

8:05 am-10:20 am

Nonstop2h 15m

$188

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 12/2

6:45 am-11:25 am

1 stop4h 40m

Boise Air Term. Gowen Fld

Tue 12/16

5:15 am-11:00 am

1 stop5h 45m

$197

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Sun 1/18

3:19 pm-5:15 pm

Nonstop2h 56m

Spokane

Tue 1/20

6:33 am-10:25 am

Nonstop2h 52m

$206

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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 $197. If you don’t want to visit Idaho in September, then you should wait until July to fly from Phoenix, when ticket prices are also cheap, with an average price of $217.

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 $238. 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 $313.

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 $280 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 $247 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 $157 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 04m
Direct flights	Every day
Airports in Idaho	3 airports

The fastest flight from Phoenix to Idaho takes 2h 04m

Direct flights go from Phoenix to Idaho every day.

There are 3 airports near Idaho: Idaho Falls Fanning Field (IDA), 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 November 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 $56	Free Cancellation	Rating 7.2 694 reviews	Search Allegiant Air flights
Delta	PriceFrom $88	Free Cancellation	Rating 7.9 7,997 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $136	Free Cancellation	Rating 7.8 2,799 reviews	Search Hawaiian Airlines flights
Southwest	PriceFrom $146	Free Cancellation	Rating 8.0 4,240 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $148	Free Cancellation	Rating 8.0 11,232 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $157	Free Cancellation	Rating 7.2 11,032 reviews	Search American Airlines flights
United Airlines	PriceFrom $247	Free Cancellation	Rating 7.4 8,993 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.

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Find better results for your trip to Idaho

Popular cities in Idaho

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Cheap flights from Phoenix to Idaho from $49

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 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Alaska Airlines flights from Phoenix to Idaho

Our best Alaska Airlines deals on Phoenix to Idaho flight tickets

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Our best Delta deals on Phoenix to Idaho flight tickets

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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, Frontier, 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 November 2025, 13 flights take off from Phoenix and land in Idaho each day. The most common flight departure time for this route is 9:00AM, with 40% of daily flights taking off at noon.

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

As of November 2025, 92 flights take off from Phoenix and land in Idaho each week. The most common flight departure day for this route is Mon, with 23% 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

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