Idaho

$50+ Cheap flights from Phoenix 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Feb 2 — Feb 91
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Cheap flight deals from Phoenix to Idaho

Cheapest flights from Phoenix to Idaho
Explore the most affordable flight options available from Phoenix to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 3, 2026.

This Booking.com deal was found by Cheapflights users on 1/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/197:00 amAZA - BOI
Nonstop2h 20mAllegiant Air
Fri 1/2310:10 amBOI - AZA
Nonstop2h 16mAllegiant Air
Deal found 1/2$116
This American Airlines deal was found by Cheapflights users on 1/1. 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.
Sat 1/312:43 pmPHX - BOI
Nonstop2h 24mAmerican Airlines
Sat 2/72:52 pmBOI - PHX
Nonstop2h 18mAmerican Airlines
Deal found 1/1$132
This Kiwi.com deal was found by Cheapflights users on 1/1. 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.
Sat 2/147:06 pmPHX - BOI
1 stop16h 05mFrontier
Fri 2/2011:56 amBOI - PHX
1 stop23h 11mFrontier
Deal found 1/1$138
This Southwest deal was found by Cheapflights users on 1/1. 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.
Tue 3/39:15 amPHX - BOI
1 stop5h 05mSouthwest
Tue 3/104:30 pmBOI - PHX
Nonstop2h 05mSouthwest
Deal found 1/1$139
This Kiwi.com deal was found by Cheapflights users on 1/1. 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 1/296:25 pmPHX - BOI
1 stop16h 47mFrontier
Mon 2/212:07 pmBOI - PHX
1 stop6h 17mFrontier
Deal found 1/1$146
This American Airlines deal was found by Cheapflights users on 1/1. 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.
Sat 1/249:42 amPHX - BOI
Nonstop2h 25mAmerican Airlines
Mon 1/262:48 pmBOI - PHX
Nonstop2h 14mAmerican Airlines
Deal found 1/1$147
This Delta deal was found by Cheapflights users on 1/1. 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.
Tue 3/36:15 pmPHX - BOI
1 stop4h 50mDelta
Tue 3/108:00 amBOI - PHX
1 stop5h 35mDelta
Deal found 1/1$149
This Orbitz deal was found by Cheapflights users on 12/31. 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 4/96:00 amPHX - GEG
1 stop5h 47mFrontier
Mon 4/139:06 amGEG - PHX
Nonstop3h 04mFrontier
Deal found 12/31$149
This Kiwi.com deal was found by Cheapflights users on 1/1. 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.
Mon 3/162:01 pmAZA - BOI
Nonstop2h 12mAllegiant Air
Mon 3/236:03 pmBOI - AZA
Nonstop2h 10mAllegiant Air
Deal found 1/1$155
This American Airlines deal was found by Cheapflights users on 1/1. 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.
Fri 1/239:42 amPHX - BOI
Nonstop2h 25mAmerican Airlines
Wed 1/286:13 amBOI - PHX
Nonstop2h 31mAmerican Airlines
Deal found 1/1$155
This Southwest deal was found by Cheapflights users on 1/2. 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 2/148:55 amPHX - BOI
Nonstop2h 10mSouthwest
Tue 2/243:00 pmBOI - PHX
Nonstop2h 05mSouthwest
Deal found 1/2$156
This Kiwi.com deal was found by Cheapflights users on 1/1. 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.
Fri 3/132:01 pmAZA - BOI
Nonstop2h 12mAllegiant Air
Mon 3/236:03 pmBOI - AZA
Nonstop2h 10mAllegiant Air
Deal found 1/1$157

Find flight deals from Phoenix to Idaho

Keep the following information in mind while searching for Phoenix to Idaho flight deals. Data was last updated January 3, 2026.

Round-trip from

$116
(Booking.com)

One-way from

$50
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$198
From Phoenix to Idaho
One-way flight from Phoenix to Idaho
Highest demand for flights based on searches. 10% potential increase in price ($29 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in January 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Phoenix 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 January 3, 2026.
Use the filters below to find and compare flights from Phoenix to Idaho that are best for you.

Fly from

Phoenix

Fly to

Idaho

Route

Depart

Return

Price

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Mon 1/19

7:00 am-9:20 am

Nonstop2h 20m

Boise Air Term. Gowen Fld

Fri 1/23

10:10 am-12:26 pm

Nonstop2h 16m

$116

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Mon 3/16

2:01 pm-5:13 pm

Nonstop2h 12m

Boise Air Term. Gowen Fld

Mon 3/23

6:03 pm-7:13 pm

Nonstop2h 10m

$155

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 2/25

9:00 am-11:10 am

Nonstop2h 10m

Boise Air Term. Gowen Fld

Sat 2/28

3:00 pm-5:05 pm

Nonstop2h 05m

$157

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Fri 3/13

2:01 pm-5:13 pm

Nonstop2h 12m

Boise Air Term. Gowen Fld

Mon 3/23

6:03 pm-7:13 pm

Nonstop2h 10m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 2/14

8:55 am-11:05 am

Nonstop2h 10m

Boise Air Term. Gowen Fld

Fri 2/20

3:40 pm-5:45 pm

Nonstop2h 05m

$166

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 1/24

9:42 am-12:07 pm

Nonstop2h 25m

Boise Air Term. Gowen Fld

Mon 1/26

2:48 pm-5:02 pm

Nonstop2h 14m

$167

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Mon 3/16

2:01 pm-5:13 pm

Nonstop2h 12m

Boise Air Term. Gowen Fld

Fri 3/20

6:03 pm-7:13 pm

Nonstop2h 10m

$167

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 2/14

8:55 am-11:05 am

Nonstop2h 10m

Boise Air Term. Gowen Fld

Tue 2/24

10:45 am-7:55 pm

2 stops9h 10m

$171

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Fri 3/13

2:01 pm-5:13 pm

Nonstop2h 12m

Boise Air Term. Gowen Fld

Fri 3/20

6:03 pm-7:13 pm

Nonstop2h 10m

$172

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 2/13

10:19 am-12:45 pm

Nonstop2h 26m

Boise Air Term. Gowen Fld

Sun 2/15

7:15 am-9:37 am

Nonstop2h 22m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/1

Showing 1-10 of 60 results
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Best time to book a flight from Phoenix to Idaho

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

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

Currently, May is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $93). Flying from Phoenix to Idaho in March is currently the most expensive (average of $161). 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 Phoenix 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 January 3, 2026.

It’s typically best to fly out from Phoenix to Idaho in the morning. Doing so could potentially save you 33% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Phoenix to Idaho?

Use this chart to determine the cheapest time to fly round-trip from Phoenix to Idaho. Price data was last updated on December 27, 2025.

Travelers seeking maximum savings on their Phoenix to Idaho flight should consider departing on Thursday 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.

Weekly flight availability from Phoenix to Idaho

Explore weekly flight availability from Phoenix to Idaho. 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 January 3, 2026.

The most flights from PH1 to USID are scheduled on a Friday (12 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Phoenix 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 January 3, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Phoenix to Idaho to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Phoenix 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 to Idaho?

    Allegiant Air, Southwest, and American Airlines can get you from Phoenix to Idaho in just under 2h 10m. Your travel time will be generally consistent. The distance from Phoenix to Idaho is about 736 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines to fly from Phoenix to Idaho one-way?

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $44. Users have also found prices from $78 and $78 on Alaska Airlines and Southwest, respectively.

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

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

    No one likes to see their flight delayed. When booking a flight from Phoenix to Idaho consider choosing American Airlines (89%), Envoy Air (89%) or SkyWest Airlines (86%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Phoenix to Idaho?

    While on average a flight from Phoenix to Idaho is generally $243, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Phoenix Sky Harbor Intl - Spokane), you can expect to pay $188 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Phoenix 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 to Idaho?

    Currently, May is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $93). Flying from Phoenix to Idaho in March is currently the most expensive (average of $161). 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 Phoenix to Idaho

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Phoenix to Idaho

Discover the top 7 airlines that operate flights from Phoenix 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 January 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$56Average$158FlexibilityNo cancel feeOn-time88%
DeltaCheapest$88Average$408FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$136Average$206FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$141Average$247FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$147Average$259FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$156Average$363FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$247Average$424FlexibilityNo cancel feeOn-time69%

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