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$20+ Cheap flights from Sky Harbor Intl (PHX) to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find flight deals from Sky Harbor Intl to Idaho

Cheapest flights from Sky Harbor Intl to Idaho
Explore the most affordable flight options available from Sky Harbor Intl to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Priceline deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:02 pmPHX - GEG
Nonstop2h 51mFrontier
Sun 12/284:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 10/26$110
This Frontier deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:00 amPHX - GEG
1 stop5h 13mFrontier
Sun 12/712:08 pmGEG - PHX
1 stop11h 36mFrontier
Deal found 10/27$143
This Southwest deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/138:50 amPHX - BOI
Nonstop2h 10mSouthwest
Mon 1/266:40 amBOI - PHX
Nonstop2h 20mSouthwest
Deal found 10/27$155
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:59 pmPHX - BOI
Nonstop2h 16mAlaska Airlines
Tue 12/97:35 amBOI - PHX
Nonstop2h 31mAlaska Airlines
Deal found 10/28$156
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:59 pmPHX - BOI
Nonstop2h 16mAlaska Airlines
Mon 12/87:35 amBOI - PHX
Nonstop2h 31mAlaska Airlines
Deal found 10/27$157
This Orbitz deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:00 amPHX - BOI
1 stop4h 49mMultiple Airlines
Sun 12/76:07 pmBOI - PHX
Nonstop2h 10mMultiple Airlines
Deal found 10/27$159
This Orbitz deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:00 amPHX - GEG
1 stop5h 13mMultiple Airlines
Sat 12/69:00 amGEG - PHX
1 stop5h 30mMultiple Airlines
Deal found 10/27$162
This Frontier deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:00 amPHX - BOI
1 stop4h 49mFrontier
Sun 12/712:44 pmBOI - PHX
1 stop12h 00mFrontier
Deal found 10/26$163
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/410:26 pmPHX - BOI
1 stop13h 23mFrontier
Thu 12/1112:44 pmBOI - PHX
2 stops10h 32mFrontier
Deal found 10/27$166
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:00 amPHX - BOI
1 stop6h 26mAlaska Airlines
Sun 12/76:07 pmBOI - PHX
Nonstop2h 10mAlaska Airlines
Deal found 10/27$167
This Priceline deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:00 amPHX - GEG
1 stop5h 07mFrontier
Thu 1/14:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 10/26$170
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:43 pmPHX - BOI
1 stop20h 00mFrontier
Thu 1/112:38 pmBOI - PHX
1 stop11h 51mFrontier
Deal found 10/27$171

Cheap flight deals from Sky Harbor Intl to Idaho

Keep the following information in mind while searching for Sky Harbor Intl to Idaho flight deals. Data was last updated October 28, 2025.

Round-trip from

$100
(Frontier)

One-way from

$20
(Priceline)

Popular in

March

Cheapest in

September

Average price

$235

Good round-trip deal

$192 or less

Good one-way deal

$113 or less
From Phoenix Sky Harbor Intl to Idaho
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Idaho
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Idaho.
Search Deals
Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Idaho.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl 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, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Idaho that are best for you.

Fly from

Sky Harbor Intl

Fly to

Idaho

Route

Depart

Return

Price

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 12/4

7:00 am-11:13 am

1 stop5h 13m

Spokane

Sun 12/7

12:08 pm-12:44 am

1 stop11h 36m

$143

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 1/9

3:11 pm-5:29 pm

Nonstop2h 18m

Boise Air Term. Gowen Fld

Mon 1/12

12:21 pm-2:29 pm

Nonstop2h 08m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 11/21

9:44 pm-11:59 pm

Nonstop2h 15m

Boise Air Term. Gowen Fld

Fri 11/28

6:57 pm-9:02 pm

Nonstop2h 05m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 12/4

8:59 pm-11:15 pm

Nonstop2h 16m

Boise Air Term. Gowen Fld

Sun 12/7

7:35 am-10:06 am

Nonstop2h 31m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 12/12

8:59 pm-11:15 pm

Nonstop2h 16m

Boise Air Term. Gowen Fld

Sun 12/14

6:07 pm-8:17 pm

Nonstop2h 10m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 1/6

9:38 pm-11:59 pm

Nonstop2h 21m

Boise Air Term. Gowen Fld

Sun 1/11

3:43 pm-10:46 pm

1 stop7h 03m

$163

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 1/16

3:17 pm-11:01 pm

1 stop7h 44m

Boise Air Term. Gowen Fld

Tue 1/20

12:21 pm-2:29 pm

Nonstop2h 08m

$165

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 12/30

8:20 pm-1:25 am

1 stop5h 05m

Boise Air Term. Gowen Fld

Sat 1/3

6:50 pm-8:55 pm

Nonstop2h 05m

$167

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 12/4

6:02 am-12:42 pm

1 stop6h 40m

Boise Air Term. Gowen Fld

Thu 12/11

7:35 am-10:06 am

Nonstop2h 31m

$167

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 12/5

8:00 am-3:26 pm

1 stop7h 26m

Boise Air Term. Gowen Fld

Sat 12/13

7:35 am-10:06 am

Nonstop2h 31m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 60 results
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Best time to book a flight from Sky Harbor Intl to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Sky Harbor Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Idaho

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Idaho?

Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Idaho (average of $115). Flying from Phoenix Sky Harbor Intl Airport to Idaho in May is currently the most expensive (average of $177). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHX to ID?

Find hourly flight availability from Sky Harbor Intl to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

It’s typically best to fly out from Phoenix Sky Harbor Intl Airport to Idaho in the evening. Doing so could potentially save you 19% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Idaho?

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Idaho. Price data was last updated on October 26, 2025.

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Idaho flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Phoenix Sky Harbor Intl Airport to Idaho?

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated October 28, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Phoenix Sky Harbor Intl Airport to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,199 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,199 reviews
Alaska Airlines
8.0
Very good
11,199 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,235 reviews
Alaska Airlines
8.0
Very good
11,199 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,995 reviews
Alaska Airlines
8.0
Very good
11,199 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,794 reviews
Alaska Airlines
8.0
Very good
11,199 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,033 reviews
Alaska Airlines
8.0
Very good
11,199 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Idaho?

    Airlines like Frontier, Alaska Airlines, and Southwest fly from Phoenix Sky Harbor Intl Airport to Idaho in about 2h 18m. The time it takes to get you to your destination can typically vary by up to 4h 22m. The distance from Phoenix Sky Harbor Intl Airport to Idaho is about 736 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Idaho one-way?

    $77 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Alaska Airlines and Delta, with prices starting from $79 and $104, respectively.

  • What are the most popular routes from Phoenix Sky Harbor Intl Airport to Idaho?

    Most travelers choose Phoenix Sky Harbor Intl - Spokane, Phoenix Sky Harbor Intl - Boise Air Term. Gowen Fld or Phoenix Sky Harbor Intl - Jackson Hole when deciding on the best route from Phoenix Sky Harbor Intl Airport to Idaho.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Idaho?

    The top 3 most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Idaho are Horizon Air (93%), American Airlines (82%) and Alaska Airlines (80%).

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Idaho?

    The cheapest flight price from Phoenix Sky Harbor Intl Airport to Idaho is $78. On average you can expect to pay $232. The most popular route, (Phoenix Sky Harbor Intl - Spokane), can usually be booked for $162.

  • Can I find deals for flights from Sky Harbor Intl to Idaho that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Idaho.

  • Can I find deals for business class flights from Sky Harbor Intl to Idaho?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Idaho?

    Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Idaho (average of $115). Flying from Phoenix Sky Harbor Intl Airport to Idaho in May is currently the most expensive (average of $177). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Sky Harbor Intl to Idaho

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Top 7 airlines flying from Sky Harbor Intl to Idaho

Discover the top 7 airlines that operate flights from Sky Harbor Intl to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$56Average$175FlexibilityNo cancel feeOn-time88%
DeltaCheapest$88Average$420FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$136Average$206FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$148Average$249FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$154Average$247FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$157Average$369FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$247Average$424FlexibilityNo cancel feeOn-time69%

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