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$69+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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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 July 29, 2025.

Round-trip from

$137
(Hawaiian Airlines)

One-way from

$69
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$241

Good round-trip deal

$167 or less

Good one-way deal

$78 or less
From Phoenix Sky Harbor Intl to Idaho
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One-way flight from Phoenix Sky Harbor Intl to Idaho
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Highest demand for flights based on searches. 7% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Idaho.
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Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Idaho.
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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 July 29, 2025.

This Southwest deal was found by Cheapflights users on 7/29. 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.
Wed 8/279:00 amPHX - BOI
Nonstop2h 10mSouthwest
Thu 8/286:15 amBOI - PHX
Nonstop2h 05mSouthwest
Deal found 7/29$137
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 9/47:59 pmPHX - BOI
Nonstop2h 08mAlaska Airlines
Sun 9/76:05 pmBOI - PHX
Nonstop2h 12mAlaska Airlines
Deal found 7/27$147
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/55:52 amPHX - BOI
1 stop6h 14mDelta
Tue 9/167:51 amBOI - PHX
1 stop4h 44mDelta
Deal found 7/27$157
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/57:59 pmPHX - BOI
Nonstop2h 08mHawaiian Airlines
Sun 9/76:05 pmBOI - PHX
Nonstop2h 12mHawaiian Airlines
Deal found 7/29$167
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/254:30 pmPHX - GEG
1 stop6h 22mAlaska Airlines
Tue 9/305:45 pmGEG - PHX
2 stops16h 29mAlaska Airlines
Deal found 7/28$195
This Southwest deal was found by Cheapflights users on 7/27. 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.
Fri 8/225:20 amPHX - GEG
1 stop10h 00mSouthwest
Mon 8/255:45 amGEG - PHX
1 stop6h 25mSouthwest
Deal found 7/27$196
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/227:15 pmPHX - GEG
1 stop4h 47mDelta
Mon 8/255:00 amGEG - PHX
1 stop5h 06mDelta
Deal found 7/28$197
This Hawaiian Airlines deal was found by Cheapflights users on 7/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/64:30 pmPHX - GEG
1 stop6h 22mHawaiian Airlines
Wed 9/174:35 pmGEG - PHX
1 stop7h 20mHawaiian Airlines
Deal found 7/28$199
This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/28:21 pmPHX - BOI
1 stop14h 25mFrontier
Sun 8/1012:36 pmBOI - PHX
1 stop20h 51mFrontier
Deal found 7/27$215
This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/37:14 amPHX - GEG
1 stop27h 44mFrontier
Fri 9/511:53 amGEG - PHX
1 stop5h 20mFrontier
Deal found 7/27$215
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/310:35 amPHX - GEG
Nonstop2h 39mAmerican Airlines
Fri 9/53:25 pmGEG - PHX
Nonstop2h 36mAmerican Airlines
Deal found 7/27$217
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/57:15 amPHX - BOI
1 stop5h 43mUnited Airlines
Wed 8/202:45 pmBOI - PHX
1 stop4h 57mUnited Airlines
Deal found 7/27$250

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 July 29, 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

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 8/19

7:39 pm-10:46 pm

Nonstop2h 07m

Boise Air Term. Gowen Fld

Tue 8/26

6:05 pm-7:17 pm

Nonstop2h 12m

$137

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 9/4

7:59 pm-11:07 pm

Nonstop2h 08m

Boise Air Term. Gowen Fld

Sun 9/7

6:05 pm-7:17 pm

Nonstop2h 12m

$147

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 9/5

5:52 am-1:06 pm

1 stop6h 14m

Boise Air Term. Gowen Fld

Tue 9/16

7:51 am-11:35 am

1 stop4h 44m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 9/24

9:00 am-12:10 pm

Nonstop2h 10m

Boise Air Term. Gowen Fld

Tue 9/30

7:25 am-3:30 pm

2 stops9h 05m

$158

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Wed 9/10

6:00 am-6:50 pm

2 stops12h 50m

Spokane

Mon 9/15

5:45 pm-11:55 pm

1 stop6h 10m

$195

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Fri 8/22

7:15 pm-12:02 am

1 stop4h 47m

Spokane

Mon 8/25

5:00 am-10:06 am

1 stop5h 06m

$196

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Sat 9/6

4:30 pm-10:52 pm

1 stop6h 22m

Spokane

Wed 9/17

4:35 pm-11:55 pm

1 stop7h 20m

$199

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Wed 9/3

7:14 am-10:58 am

1 stop27h 44m

Spokane

Fri 9/5

11:53 am-5:13 pm

1 stop5h 20m

$215

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Wed 9/3

10:35 am-1:14 pm

Nonstop2h 39m

Spokane

Fri 9/5

3:25 pm-6:01 pm

Nonstop2h 36m

$217

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Fri 9/12

5:45 am-11:25 am

1 stop5h 40m

Spokane

Thu 9/18

1:10 pm-10:15 pm

2 stops9h 05m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 55 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, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Idaho (average of $314). Flying from Phoenix Sky Harbor Intl Airport to Idaho in June is currently the most expensive (average of $398). 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 July 29, 2025.

When flying from Phoenix Sky Harbor Intl Airport to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 29, 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
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    $69 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Hawaiian Airlines and Southwest, with prices starting from $73 and $78, 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 - Idaho Falls Fanning Field 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 Envoy Air (95%), Alaska Airlines (94%) and Horizon Air (94%).

  • 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 $68. On average you can expect to pay $291. The most popular route, (Phoenix Sky Harbor Intl - Spokane), can usually be booked for $156.

  • 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, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Idaho (average of $314). Flying from Phoenix Sky Harbor Intl Airport to Idaho in June is currently the most expensive (average of $398). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Sky Harbor Intl to Idaho

Discover the top 8 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$63Average$114FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$87Average$172FlexibilityNo cancel feeOn-time65%
DeltaCheapest$88Average$433FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$136Average$210FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$142Average$235FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$159Average$434FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$159Average$253FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$196Average$407FlexibilityNo cancel feeOn-time69%

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