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

Frontier, Alaska Airlines, and Hawaiian Airlines are the most popular carriers operating from Phoenix Sky Harbor Intl to Idaho

What airlines fly to Idaho?

Southwest, American Airlines and Alaska Airlines are the top three most popular airlines that fly to Idaho from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport to Idaho on average per day?

The number of flights available between Phoenix Sky Harbor Intl Airport and Idaho is 12 per day as of November 2025. The most frequent departure time is 8:00PM, with 43% of daily flights leaving at noon.

How many flights depart from Phoenix Sky Harbor Intl Airport to Idaho on average per week?

The number of flights available between Phoenix Sky Harbor Intl Airport and Idaho is 86 per week as of November 2025. The most frequent departure day is Mon, with 21% of weekly flights leaving on this day.

How many operators does momondo search for flights from Phoenix Sky Harbor Intl Airport to Idaho?

The number of operators available for flights from Phoenix Sky Harbor Intl Airport to Idaho is 8 as of November 2025.

How old do you have to be to fly from Phoenix Sky Harbor Intl Airport to Idaho?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phoenix Sky Harbor Intl Airport 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.

$20 Cheap Flights from Phoenix Sky Harbor Intl Airport to Idaho in 2025/26

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Find the cheapest flights from Phoenix Sky Harbor Intl Airport to Idaho

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One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:02 pm - 3:53 pmPHX-GEG

2h 51mnonstop

4:48 pm - 8:52 pmGEG-PHX

3h 04mnonstop

$69Frontier

Find Deal

Tue, Dec 23 - Sun, Dec 28

2:15 pm - 4:06 pmPHX-GEG

2h 51mnonstop

5:01 pm - 9:05 pmGEG-PHX

3h 04mnonstop

$83Frontier

Find Deal

Thu, Dec 4 - Thu, Dec 11

3:11 pm - 5:29 pmPHX-BOI

2h 18mnonstop

12:21 pm - 2:29 pmBOI-PHX

2h 08mnonstop

$155Alaska Airlines

Find Deal

Fri, Jan 16 - Tue, Jan 20

10:48 am - 1:12 pmPHX-BOI

2h 24mnonstop

6:07 pm - 8:17 pmBOI-PHX

2h 10mnonstop

$156Alaska Airlines

Find Deal

Fri, Dec 12 - Sun, Dec 14

11:04 am - 1:38 pmPHX-BOI

2h 34mnonstop

2:09 pm - 4:30 pmBOI-PHX

2h 21mnonstop

$159American Airlines

Find Deal

Wed, Dec 3 - Sun, Dec 7

2:43 pm - 9:58 pmPHX-BOI

7h 15m1 stop

7:30 am - 1:47 pmBOI-PHX

6h 17m1 stop

$173Delta

Find Deal

Fri, Jan 16 - Tue, Jan 20

6:40 am - 11:50 amPHX-BOI

5h 10m1 stop

5:25 pm - 10:05 pmBOI-PHX

4h 40m1 stop

$174Southwest

Find Deal

Thu, Jan 15 - Fri, Jan 23

12:05 pm - 8:12 pmPHX-BOI

8h 07m1 stop

4:41 pm - 10:42 pmBOI-PHX

6h 01m1 stop

$175Delta

Find Deal

Fri, Jan 23 - Wed, Jan 28

8:20 am - 10:37 amPHX-BOI

2h 17mnonstop

2:09 pm - 4:30 pmBOI-PHX

2h 21mnonstop

$179American Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

7:05 am - 12:20 pmPHX-BOI

5h 15m1 stop

5:15 am - 11:25 amBOI-PHX

6h 10m2 stops

$182Southwest

Find Deal

Fri, Dec 5 - Wed, Dec 10

American Airlines flights from Phoenix Sky Harbor Intl Airport to Idaho

Our best American Airlines deals on Phoenix Sky Harbor Intl Airport to Idaho flight tickets

American Airlines

Dec 3

PHX11:04 amPhoenix Sky Harbor Intl

2h 34m

BOI1:38 pmBoise Air Term. Gowen Fld

Dec 7

BOI2:09 pmBoise Air Term. Gowen Fld

2h 21m

PHX4:30 pmPhoenix Sky Harbor Intl

$159

Find similar

American Airlines

Dec 2

PHX8:20 amPhoenix Sky Harbor Intl

2h 17m

BOI10:37 amBoise Air Term. Gowen Fld

Dec 9

BOI2:09 pmBoise Air Term. Gowen Fld

2h 21m

PHX4:30 pmPhoenix Sky Harbor Intl

$179

Find similar

American Airlines

Jan 16

PHX9:42 amPhoenix Sky Harbor Intl

2h 25m

BOI12:07 pmBoise Air Term. Gowen Fld

Jan 20

BOI2:52 pmBoise Air Term. Gowen Fld

2h 18m

PHX5:10 pmPhoenix Sky Harbor Intl

$180

Find similar

Delta flights from Phoenix Sky Harbor Intl Airport to Idaho

Our best Delta deals on Phoenix Sky Harbor Intl Airport to Idaho flight tickets

Delta

Jan 16

PHX2:43 pmPhoenix Sky Harbor Intl

7h 15m

1 stop

BOI9:58 pmBoise Air Term. Gowen Fld

Jan 20

BOI7:30 amBoise Air Term. Gowen Fld

6h 17m

1 stop

PHX1:47 pmPhoenix Sky Harbor Intl

$173

Find similar

Delta

Jan 23

PHX12:05 pmPhoenix Sky Harbor Intl

8h 07m

1 stop

BOI8:12 pmBoise Air Term. Gowen Fld

Jan 28

BOI4:41 pmBoise Air Term. Gowen Fld

6h 01m

1 stop

PHX10:42 pmPhoenix Sky Harbor Intl

$175

Find similar

Delta

Dec 3

PHX8:00 pmPhoenix Sky Harbor Intl

4h 42m

1 stop

BOI12:42 amBoise Air Term. Gowen Fld

Dec 8

BOI9:00 amBoise Air Term. Gowen Fld

6h 45m

1 stop

PHX3:45 pmPhoenix Sky Harbor Intl

$177

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Tue 12/23

2:02 pm-3:53 pm

Nonstop2h 51m

Spokane

Sun 12/28

4:48 pm-8:52 pm

Nonstop3h 04m

$69

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 12/4

2:15 pm-4:06 pm

Nonstop2h 51m

Spokane

Thu 12/11

5:01 pm-9:05 pm

Nonstop3h 04m

$83

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 1/16

3:11 pm-5:29 pm

Nonstop2h 18m

Boise Air Term. Gowen Fld

Tue 1/20

12:21 pm-2:29 pm

Nonstop2h 08m

$155

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 12/12

10:48 am-1:12 pm

Nonstop2h 24m

Boise Air Term. Gowen Fld

Sun 12/14

6:07 pm-8:17 pm

Nonstop2h 10m

$156

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 12/3

11:04 am-1:38 pm

Nonstop2h 34m

Boise Air Term. Gowen Fld

Sun 12/7

2:09 pm-4:30 pm

Nonstop2h 21m

$159

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 1/16

2:43 pm-9:58 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Tue 1/20

7:30 am-1:47 pm

1 stop6h 17m

$173

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 1/15

6:40 am-11:50 am

1 stop5h 10m

Boise Air Term. Gowen Fld

Fri 1/23

5:25 pm-10:05 pm

1 stop4h 40m

$174

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 1/23

12:05 pm-8:12 pm

1 stop8h 07m

Boise Air Term. Gowen Fld

Wed 1/28

4:41 pm-10:42 pm

1 stop6h 01m

$175

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 12/2

8:20 am-10:37 am

Nonstop2h 17m

Boise Air Term. Gowen Fld

Tue 12/9

2:09 pm-4:30 pm

Nonstop2h 21m

$179

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 12/5

7:05 am-12:20 pm

1 stop5h 15m

Boise Air Term. Gowen Fld

Wed 12/10

5:15 am-11:25 am

2 stops6h 10m

$182

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport 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 Sky Harbor Intl Airport, 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 $236. On the other hand, Sunday is the most expensive day to depart from Phoenix Sky Harbor Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $323.

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 Sky Harbor Intl Airport 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 Sky Harbor Intl to Idaho flight route?

Fly from Phoenix Sky Harbor Intl to Boise Air Term. Gowen Fld for the best Phoenix Sky Harbor Intl - 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 Sky Harbor Intl Airport 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 Sky Harbor Intl Airport for as low as $157 on momondo.

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

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

Can stopping save me money on Phoenix Sky Harbor Intl Airport to Idaho flights?

No. A direct flight is the cheapest option for a flight between Phoenix Sky Harbor Intl Airport to Idaho.

Cheap Phoenix Sky Harbor Intl Airport to Idaho flight deals and tips

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

Best Price Found	$113
Fastest flight time	2h 04m
Direct flights	Every day
Airports in Idaho	3 airports

The best one-way flight to Idaho from Phoenix Sky Harbor Intl Airport in the past 72 hours is $113. The best round-trip flight deal from Phoenix Sky Harbor Intl Airport to Idaho found on momondo in the last 72 hours is $197.

The fastest flight from Phoenix Sky Harbor Intl Airport to Idaho takes 2h 04m

Direct flights go from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport to Idaho?
Prices for flights from Phoenix Sky Harbor Intl Airport to Idaho refresh daily.
How many operators does momondo search for flights from Phoenix Sky Harbor Intl Airport to Idaho?
The number of operators available for flights from Phoenix Sky Harbor Intl Airport to Idaho is 8 as of November 2025.
How old do you have to be to fly from Phoenix Sky Harbor Intl Airport to Idaho?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phoenix Sky Harbor Intl Airport 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.
What is the most popular plane model from Phoenix Sky Harbor Intl Airport to Idaho?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Phoenix Sky Harbor Intl Airport to Idaho is Embraer 175 (41.90% of total bookings). The next most popular plane models are Boeing 737-700 Passenger/BBJ1 (winglets) (14.23%), Canadair (Bombardier) Regional Jet 700 (13.70%), and Boeing 737-800 Passenger/BBJ2 (winglets) (11.30%).

Best airlines flying from Phoenix Sky Harbor Intl Airport to Idaho

Compare and see reviews for airlines that fly from Phoenix Sky Harbor Intl Airport to Idaho with momondo

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $56	Free Cancellation	Rating 7.2 697 reviews	Search Allegiant Air flights
Delta	PriceFrom $88	Free Cancellation	Rating 7.9 8,004 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $136	Free Cancellation	Rating 7.8 2,804 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 11,242 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $157	Free Cancellation	Rating 7.2 11,042 reviews	Search American Airlines flights
United Airlines	PriceFrom $247	Free Cancellation	Rating 7.4 9,004 reviews	Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Phoenix to Idaho. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Idaho from Phoenix on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Idaho from Phoenix. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Phoenix to Idaho now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho and let you know when they 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.

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Popular cities in Idaho

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Phoenix Sky Harbor Intl Airport flight routes

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Cheap flights from Phoenix Sky Harbor Intl Airport to Idaho from $20

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Big names and deals

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Filter for what you want

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Find the cheapest flights from Phoenix Sky Harbor Intl Airport to Idaho

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American Airlines flights from Phoenix Sky Harbor Intl Airport to Idaho

Our best American Airlines deals on Phoenix Sky Harbor Intl Airport to Idaho flight tickets

Delta flights from Phoenix Sky Harbor Intl Airport to Idaho

Our best Delta deals on Phoenix Sky Harbor Intl Airport to Idaho flight tickets

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

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How to get the cheapest flight ticket from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl to Idaho flight route?

Fly from Phoenix Sky Harbor Intl to Boise Air Term. Gowen Fld for the best Phoenix Sky Harbor Intl - Idaho flight prices

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

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

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

Can stopping save me money on Phoenix Sky Harbor Intl Airport to Idaho flights?

No. A direct flight is the cheapest option for a flight between Phoenix Sky Harbor Intl Airport to Idaho.

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

Frontier, Alaska Airlines, and Hawaiian Airlines are the most popular carriers operating from Phoenix Sky Harbor Intl to Idaho

What airlines fly to Idaho?

How many flights depart from Phoenix Sky Harbor Intl Airport to Idaho on average per day?

The number of flights available between Phoenix Sky Harbor Intl Airport and Idaho is 12 per day as of November 2025. The most frequent departure time is 8:00PM, with 43% of daily flights leaving at noon.

How many flights depart from Phoenix Sky Harbor Intl Airport to Idaho on average per week?

The number of flights available between Phoenix Sky Harbor Intl Airport and Idaho is 86 per week as of November 2025. The most frequent departure day is Mon, with 21% of weekly flights leaving on this day.

Cheap Phoenix Sky Harbor Intl Airport to Idaho flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Idaho

When did momondo last update prices for flights from Phoenix Sky Harbor Intl Airport to Idaho?

How many operators does momondo search for flights from Phoenix Sky Harbor Intl Airport to Idaho?

How old do you have to be to fly from Phoenix Sky Harbor Intl Airport to Idaho?

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

What is the most popular plane model from Phoenix Sky Harbor Intl Airport to Idaho?

Best airlines flying from Phoenix Sky Harbor Intl Airport to Idaho

Compare and see reviews for airlines that fly from Phoenix Sky Harbor Intl Airport 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