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$79+ Cheap flights from Idaho to Phoenix

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHX
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheap flight deals from Idaho to Phoenix

Keep the following information in mind while searching for Idaho to Phoenix flight deals. Data was last updated April 17, 2025.

Round-trip from

$187
(Alaska Airlines)

One-way from

$79
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$268
From Idaho to Phoenix
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One-way flight from Idaho to Phoenix
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Highest demand for flights based on searches. 16% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Idaho to Phoenix

Cheapest flights from Idaho to Phoenix
Explore the most affordable flight options available from Idaho to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This Alaska Airlines deal was found by Cheapflights users on 4/16. 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 5/96:11 pmBOI - PHX
Nonstop2h 08mAlaska Airlines
Tue 5/137:59 pmPHX - BOI
Nonstop2h 16mAlaska Airlines
Deal found 4/16$187
This Southwest deal was found by Cheapflights users on 4/17. 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 5/106:05 pmBOI - PHX
Nonstop2h 05mSouthwest
Sat 5/177:00 amPHX - BOI
1 stop6h 10mSouthwest
Deal found 4/17$197
This Frontier deal was found by Cheapflights users on 4/17. 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 5/152:57 pmBOI - PHX
1 stop9h 58mFrontier
Sun 5/185:50 amPHX - BOI
1 stop6h 47mFrontier
Deal found 4/17$198
This Delta deal was found by Cheapflights users on 4/17. 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 7/46:10 pmBOI - PHX
1 stop5h 27mDelta
Wed 7/99:20 amPHX - BOI
1 stop4h 42mDelta
Deal found 4/17$199
This Hawaiian Airlines deal was found by Cheapflights users on 4/17. 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.
Tue 5/134:20 pmBOI - PHX
1 stop5h 39mHawaiian Airlines
Thu 5/156:00 amPHX - BOI
1 stop8h 06mHawaiian Airlines
Deal found 4/17$206
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Mon 5/195:10 pmBOI - PHX
Nonstop2h 11mAmerican Airlines
Tue 6/31:35 pmPHX - BOI
Nonstop2h 05mAmerican Airlines
Deal found 4/17$218
This Delta deal was found by Cheapflights users on 4/16. 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.
Wed 4/309:05 amGEG - PHX
1 stop7h 20mDelta
Tue 5/65:19 pmPHX - GEG
1 stop6h 25mDelta
Deal found 4/16$224
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
Wed 8/136:00 amGEG - PHX
1 stop4h 52mAlaska Airlines
Tue 8/195:29 pmPHX - GEG
1 stop5h 27mAlaska Airlines
Deal found 4/16$228
This American Airlines deal was found by Cheapflights users on 4/16. 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 4/303:21 pmGEG - PHX
Nonstop2h 35mAmerican Airlines
Wed 5/710:51 amPHX - GEG
Nonstop2h 46mAmerican Airlines
Deal found 4/16$234
This Southwest deal was found by Cheapflights users on 4/16. 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 5/94:15 pmGEG - PHX
Nonstop2h 35mSouthwest
Mon 5/128:50 amPHX - GEG
Nonstop2h 45mSouthwest
Deal found 4/16$239
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Thu 10/92:45 pmBOI - PHX
1 stop4h 57mUnited Airlines
Sat 10/116:00 amPHX - BOI
1 stop6h 35mUnited Airlines
Deal found 4/17$251
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. 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.
Mon 5/56:00 amGEG - PHX
1 stop4h 52mHawaiian Airlines
Fri 5/96:16 pmPHX - GEG
1 stop5h 43mHawaiian Airlines
Deal found 4/16$258

Cheapflights Fare Finder

Customize your flight search to find flights from Idaho to Phoenix 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 April 17, 2025.
Use the filters below to find and compare flights from Idaho to Phoenix that are best for you.

Fly from

Idaho

Fly to

Phoenix

Route

Depart

Return

Price

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 5/9

6:11 pm-7:19 pm

Nonstop2h 08m

Phoenix Sky Harbor Intl

Tue 5/13

7:59 pm-11:15 pm

Nonstop2h 16m

$187

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sat 5/10

12:50 pm-4:23 pm

1 stop4h 33m

Phoenix Sky Harbor Intl

Tue 5/13

7:10 pm-12:23 am

1 stop4h 13m

$197

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 5/15

2:57 pm-11:55 pm

1 stop9h 58m

Phoenix Sky Harbor Intl

Sun 5/18

5:50 am-1:37 pm

1 stop6h 47m

$198

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Tue 5/13

4:20 pm-8:59 pm

1 stop5h 39m

Phoenix Sky Harbor Intl

Thu 5/15

6:00 am-3:06 pm

1 stop8h 06m

$206

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 7/4

9:00 am-10:05 am

Nonstop2h 05m

Phoenix Sky Harbor Intl

Wed 7/9

7:00 pm-12:25 am

1 stop4h 25m

$208

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Mon 5/19

5:10 pm-6:21 pm

Nonstop2h 11m

Phoenix Sky Harbor Intl

Tue 6/3

1:35 pm-4:40 pm

Nonstop2h 05m

$218

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Wed 4/30

9:05 am-4:25 pm

1 stop7h 20m

Phoenix Sky Harbor Intl

Tue 5/6

5:19 pm-11:44 pm

1 stop6h 25m

$224

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Wed 4/30

3:21 pm-5:56 pm

Nonstop2h 35m

Phoenix Sky Harbor Intl

Wed 5/7

10:51 am-1:37 pm

Nonstop2h 46m

$234

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Fri 5/9

4:15 pm-6:50 pm

Nonstop2h 35m

Phoenix Sky Harbor Intl

Mon 5/12

8:50 am-11:35 am

Nonstop2h 45m

$239

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Mon 5/5

7:00 am-2:12 pm

1 stop7h 12m

Phoenix Sky Harbor Intl

Thu 5/15

6:00 am-10:53 am

1 stop4h 53m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 54 results
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Best time to book a flight from Idaho to Phoenix

Have a flexible travel schedule? Discover the best time to fly to Phoenix from Idaho 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 Idaho to Phoenix

What is the cheapest month to book a flight from Idaho to Phoenix?

Currently, January is the cheapest month in which you can book a flight from Idaho to Phoenix (average of $258). Flying from Idaho to Phoenix in March is currently the most expensive (average of $337). 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 ID to PHX?

Find hourly flight availability from Idaho to Phoenix. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Phoenix as you normally would.

Weekly flight availability from Idaho to Phoenix

Explore weekly flight availability from Idaho to Phoenix. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 17, 2025.

The most flights from USID to PH1 are scheduled on a Monday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Phoenix by month

Plan your trip to Phoenix by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Phoenix ranges from 0.0 - 1.1 inches per month. July is typically the wettest month, when rainfall can reach 1.1 in. June is typically the driest time to visit Phoenix when rainfall is around 0.0 in.

Temperature in Phoenix by month

Plan your trip to Phoenix by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Phoenix, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 95.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 55.4 F).

Reviews of airlines servicing Phoenix

Get insights into the airlines that provide service to Phoenix. 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 Phoenix. Reviews last updated April 17, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Idaho to Phoenix. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,382 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

Find useful and relevant information for your journey from Idaho to Phoenix. 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 Idaho to Phoenix one-way?

    One-way options have recently been found by users for as low as $79 on Alaska Airlines. Other airlines that offer cheap prices include Southwest from $80 and Delta from $90 one-way.

  • What are the most popular routes from Idaho to Phoenix?

    When deciding which route to take from Idaho to Phoenix consider Boise Air Term. Gowen Fld - Phoenix Sky Harbor Intl, Spokane - Phoenix Sky Harbor Intl or Idaho Falls Fanning Field - Phoenix Sky Harbor Intl as they are the most popular.

  • What are the most reliable airlines from Idaho to Phoenix?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Idaho to Phoenix on time: Southwest (95%), Alaska Airlines (86%), American Airlines (85%).

  • What are the cheapest flights from Idaho to Phoenix?

    The cheapest flight price from Idaho to Phoenix is $88. On average you can expect to pay $561. The most popular route, (Boise Air Term. Gowen Fld - Phoenix Sky Harbor Intl), can usually be booked for $176.

  • Can I find deals for flights from Idaho to Phoenix that include hotel bookings?

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

  • How can I find direct flights from Idaho to Phoenix?

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

  • Can I find deals for business class flights from Idaho to Phoenix?

    Yes. Cheapflights offers flight deals from Idaho to Phoenix 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 Idaho to Phoenix?

    Currently, January is the cheapest month in which you can book a flight from Idaho to Phoenix (average of $258). Flying from Idaho to Phoenix in March is currently the most expensive (average of $337). 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.

See more FAQs

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Alternative routes for Idaho to Phoenix

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

Discover the top 8 airlines that operate flights from Idaho to Phoenix. 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$79Average$207FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$85Average$179FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$108Average$252FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$154Average$359FlexibilityNo cancel feeOn-time75%
DeltaCheapest$156Average$447FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$168Average$297FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$186Average$445FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$526FlexibilityNo cancel feeOn-time69%

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