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

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

What airlines fly to Idaho?

American Airlines, Southwest and Alaska Airlines are the top three most popular airlines that fly to Idaho from Phoenix Sky Harbor Intl Airport according to our data. American Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 6 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 week?

The number of flights available between Phoenix Sky Harbor Intl Airport and Idaho is 108 per week as of March 2026. The most frequent departure day is Sun, with 19% of weekly flights leaving on this day.

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 15 per day as of March 2026. The most frequent departure time is 8:00PM, with 55% of daily flights leaving in the evening.

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 March 2026.

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.

$70 Cheap Flights from Phoenix Sky Harbor Intl Airport to Idaho in 2026

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:15 am - 12:27 pm

PHX

BOI

6h 12m

1 stop

1:22 pm - 11:31 pm

BOI

PHX

11h 09m

1 stop

$140Frontier

Thu, May 14 - Tue, May 19

5:15 am - 12:27 pm

PHX

BOI

6h 12m

1 stop

1:22 pm - 7:44 am

BOI

PHX

19h 22m

1 stop

$151Frontier

Thu, May 14 - Sun, May 17

8:25 pm - 11:30 pm

PHX

BOI

2h 05mnonstop

1:05 pm - 5:50 pm

BOI

PHX

5h 45m

1 stop

$177Southwest

Wed, Apr 22 - Wed, Apr 29

8:25 pm - 11:30 pm

PHX

BOI

2h 05mnonstop

7:05 am - 8:10 am

BOI

PHX

2h 05mnonstop

$184Southwest

Wed, Apr 15 - Sat, Apr 18

4:40 pm - 11:00 pm

PHX

BOI

5h 20m

1 stop

5:40 am - 10:50 am

BOI

PHX

6h 10m

1 stop

$185Delta

Wed, Apr 22 - Wed, Apr 29

6:37 am - 10:20 pm

PHX

GEG

15h 43m

1 stop

10:30 am - 6:26 pm

GEG

PHX

7h 56m

1 stop

$244Alaska Airlines

Tue, May 5 - Wed, May 6

3:43 pm - 10:20 pm

PHX

GEG

6h 37m

1 stop

10:30 am - 6:26 pm

GEG

PHX

7h 56m

1 stop

$251Alaska Airlines

Tue, May 5 - Wed, May 6

5:00 am - 12:41 pm

PHX

JAC

6h 41m

1 stop

1:25 pm - 7:27 pm

JAC

PHX

7h 02m

1 stop

$311American Airlines

Sun, Apr 26 - Wed, May 6

6:00 am - 10:41 am

PHX

WYS

3h 41m

1 stop

1:09 pm - 6:26 pm

WYS

PHX

6h 17m

1 stop

$314Delta

Sat, Aug 22 - Fri, Aug 28

5:00 am - 12:41 pm

PHX

JAC

6h 41m

1 stop

1:25 pm - 9:46 pm

JAC

PHX

9h 21m

1 stop

$320American Airlines

Sun, Apr 26 - Wed, May 6

Southwest flights from Phoenix Sky Harbor Intl Airport to Idaho

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

Southwest

Apr 22

PHX8:25 pmPhoenix Sky Harbor Intl

2h 05m

BOI11:30 pmBoise Air Term. Gowen Fld

Apr 29

BOI1:05 pmBoise Air Term. Gowen Fld

5h 45m

1 stop

PHX5:50 pmPhoenix Sky Harbor Intl

$177

Southwest

Apr 15

PHX8:25 pmPhoenix Sky Harbor Intl

2h 05m

BOI11:30 pmBoise Air Term. Gowen Fld

Apr 18

BOI7:05 amBoise Air Term. Gowen Fld

2h 05m

PHX8:10 amPhoenix Sky Harbor Intl

$184

Southwest

Apr 22

PHX9:35 amPhoenix Sky Harbor Intl

4h 50m

1 stop

BOI3:25 pmBoise Air Term. Gowen Fld

Apr 29

BOI7:05 amBoise Air Term. Gowen Fld

4h 05m

1 stop

PHX10:10 amPhoenix Sky Harbor Intl

$186

Frontier flights from Phoenix Sky Harbor Intl Airport to Idaho

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

Frontier

May 14

PHX5:15 amPhoenix Sky Harbor Intl

6h 12m

1 stop

BOI12:27 pmBoise Air Term. Gowen Fld

May 19

BOI1:22 pmBoise Air Term. Gowen Fld

11h 09m

1 stop

PHX11:31 pmPhoenix Sky Harbor Intl

$140

Frontier

May 14

PHX5:15 amPhoenix Sky Harbor Intl

6h 12m

1 stop

BOI12:27 pmBoise Air Term. Gowen Fld

May 17

BOI1:22 pmBoise Air Term. Gowen Fld

19h 22m

1 stop

PHX7:44 amPhoenix Sky Harbor Intl

$151

Frontier

May 7

PHX5:15 amPhoenix Sky Harbor Intl

6h 12m

1 stop

BOI12:27 pmBoise Air Term. Gowen Fld

May 12

BOI1:22 pmBoise Air Term. Gowen Fld

11h 09m

1 stop

PHX11:31 pmPhoenix Sky Harbor Intl

$160

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

Cheapest round-trip

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 5/14

5:15 am-12:27 pm

1 stop6h 12m

Boise Air Term. Gowen Fld

Tue 5/19

1:22 pm-11:31 pm

1 stop11h 09m

$140

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 5/14

5:15 am-12:27 pm

1 stop6h 12m

Boise Air Term. Gowen Fld

Sun 5/17

1:22 pm-7:44 am

1 stop19h 22m

$151

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 4/22

8:25 pm-11:30 pm

Nonstop2h 05m

Boise Air Term. Gowen Fld

Wed 4/29

1:05 pm-5:50 pm

1 stop5h 45m

$177

Quickest round-trip

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 4/15

8:25 pm-11:30 pm

Nonstop2h 05m

Boise Air Term. Gowen Fld

Sat 4/18

7:05 am-8:10 am

Nonstop2h 05m

$184

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 4/22

4:40 pm-11:00 pm

1 stop5h 20m

Boise Air Term. Gowen Fld

Wed 4/29

5:40 am-10:50 am

1 stop6h 10m

$185

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Tue 5/5

6:37 am-10:20 pm

1 stop15h 43m

Spokane

Wed 5/6

10:30 am-6:26 pm

1 stop7h 56m

$244

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Tue 5/5

3:43 pm-10:20 pm

1 stop6h 37m

Spokane

Wed 5/6

10:30 am-6:26 pm

1 stop7h 56m

$251

PhoenixJackson

PHX - JAC

PHXJAC

Phoenix Sky Harbor Intl

Sun 4/26

5:00 am-12:41 pm

1 stop6h 41m

Jackson Hole

Wed 5/6

1:25 pm-7:27 pm

1 stop7h 02m

$311

PhoenixWest Yellowstone

PHX - WYS

PHXWYS

Phoenix Sky Harbor Intl

Sat 8/22

6:00 am-10:41 am

1 stop3h 41m

West Yellowstone

Fri 8/28

1:09 pm-6:26 pm

1 stop6h 17m

$314

PhoenixJackson

PHX - JAC

PHXJAC

Phoenix Sky Harbor Intl

Sun 4/26

5:00 am-12:41 pm

1 stop6h 41m

Jackson Hole

Wed 5/6

1:25 pm-9:46 pm

1 stop9h 21m

$320

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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, January 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 $177. If you don’t want to visit Idaho in January, then you should wait until September to fly from Phoenix Sky Harbor Intl Airport, when ticket prices are also cheap, with an average price of $202.

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 $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 Sky Harbor Intl Airport to Idaho in the afternoon for as low as $203. 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 $166 on momondo.

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

There are 3 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?

You could potentially save up to 9% on your flight if you consider stops on a Phoenix Sky Harbor Intl Airport to Idaho flight.

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	$167
Fastest flight time	2h 00m
Direct flights	Every day
Airports in Idaho	27 airports

The best one-way flight to Idaho from Phoenix Sky Harbor Intl Airport in the past 72 hours is $167. The best round-trip flight deal from Phoenix Sky Harbor Intl Airport to Idaho found on momondo in the last 72 hours is $226.

The fastest flight from Phoenix Sky Harbor Intl Airport to Idaho takes 2h 00m

Direct flights go from Phoenix Sky Harbor Intl Airport to Idaho every day.

There are 27 airports in Idaho. From Phoenix Sky Harbor Intl Airport there are direct flights to Idaho Falls Fanning Field (IDA), Boise Air Term. Gowen Fld (BOI).

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 March 2026.
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 (34.91% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (20.41%), Canadair (Bombardier) Regional Jet 700 (16.42%), and Boeing 737-800 Passenger/BBJ2 (winglets) (9.17%).

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
Delta	PriceFrom $81	Free Cancellation	Rating 7.9 8,359 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $124	Free Cancellation	Rating 7.8 2,837 reviews	Search Hawaiian Airlines flights
Southwest	PriceFrom $137	Free Cancellation	Rating 8.0 4,331 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $151	Free Cancellation	Rating 7.9 12,137 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $156	Free Cancellation	Rating 7.1 11,522 reviews	Search American Airlines flights
United Airlines	PriceFrom $290	Free Cancellation	Rating 7.4 9,510 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.

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Flights to New Yorkfrom $58

Flights to Los Angelesfrom $53

Flights to Orlandofrom $49

Flights to Miamifrom $53

Flights to Chicagofrom $56

Flights to San Franciscofrom $55

Flights to Las Vegasfrom $35

Flights to Washington, D.C.from $51

Flights to Bostonfrom $76

Flights to Atlantafrom $49

Flights to Dallasfrom $56

Flights to Seattlefrom $80

Cheap flights from Phoenix Sky Harbor Intl Airport to Idaho from $70

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

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Southwest flights from Phoenix Sky Harbor Intl Airport to Idaho

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

Frontier flights from Phoenix Sky Harbor Intl Airport to Idaho

Our best Frontier 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.

See travel insights to Idaho from

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

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?

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?

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

What is the cheapest airline that flies 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?

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

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

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?

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

Phoenix Sky Harbor Intl Airport flight routes

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