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Idaho

$51+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
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Cheap flight deals from Phoenix to Idaho

Keep the following information in mind while searching for Phoenix to Idaho flight deals. Data was last updated April 1, 2025.

Round-trip from

$177
(Hawaiian Airlines)

One-way from

$51
(Booking.com)

Popular in

March

Cheapest in

September

Average price

$283
From Phoenix to Idaho
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One-way flight from Phoenix to Idaho
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 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 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 April 1, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 3/30. 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 4/297:59 pmPHX - BOI
Nonstop2h 16mHawaiian Airlines
Tue 5/66:11 pmBOI - PHX
Nonstop2h 08mHawaiian Airlines
Deal found 3/30$177
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/127:38 pmPHX - BOI
Nonstop2h 07mAlaska Airlines
Wed 6/185:44 pmBOI - PHX
Nonstop2h 12mAlaska Airlines
Deal found 4/1$198
This Booking.com deal was found by Cheapflights users on 3/30. 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 3/316:30 pmAZA - BOI
Nonstop2h 10mAllegiant Air
Fri 4/410:19 pmBOI - AZA
Nonstop2h 08mAllegiant Air
Deal found 3/30$199
This Southwest deal was found by Cheapflights users on 3/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/19:50 pmPHX - BOI
Nonstop2h 00mSouthwest
Tue 5/63:00 pmBOI - PHX
2 stops6h 45mSouthwest
Deal found 3/31$202
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/228:25 pmPHX - BOI
1 stop3h 52mDelta
Sat 11/291:15 pmBOI - PHX
1 stop6h 12mDelta
Deal found 3/31$219
This CheapOair deal was found by Cheapflights users on 3/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/197:57 pmPHX - BOI
1 stop16h 40mFrontier
Thu 5/2212:36 pmBOI - PHX
1 stop5h 46mFrontier
Deal found 3/31$226
This American Airlines deal was found by Cheapflights users on 3/30. 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 4/188:22 pmPHX - BOI
Nonstop2h 12mAmerican Airlines
Mon 4/215:18 pmBOI - PHX
Nonstop2h 10mAmerican Airlines
Deal found 3/30$240
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1410:51 amPHX - GEG
Nonstop2h 46mAmerican Airlines
Wed 5/213:18 pmGEG - PHX
Nonstop2h 37mAmerican Airlines
Deal found 3/31$241
This Mytrip deal was found by Cheapflights users on 3/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/178:30 amAZA - BOI
2 stops27h 27mMultiple Airlines
Mon 4/2110:32 pmBOI - AZA
Nonstop2h 07mMultiple Airlines
Deal found 3/30$245
This United Airlines deal was found by Cheapflights users on 3/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/176:00 amPHX - BOI
1 stop5h 44mUnited Airlines
Sun 4/207:00 pmBOI - PHX
1 stop5h 32mUnited Airlines
Deal found 3/31$251
This Southwest deal was found by Cheapflights users on 3/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/149:20 amPHX - GEG
Nonstop2h 50mSouthwest
Wed 5/215:50 amGEG - PHX
1 stop6h 50mSouthwest
Deal found 3/31$251
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/246:10 amPHX - GEG
1 stop5h 32mDelta
Tue 4/299:05 amGEG - PHX
1 stop5h 24mDelta
Deal found 3/31$253

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 April 1, 2025.
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

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 4/29

7:59 pm-11:15 pm

Nonstop2h 16m

Boise Air Term. Gowen Fld

Tue 5/6

6:11 pm-7:19 pm

Nonstop2h 08m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 6/12

7:38 pm-10:45 pm

Nonstop2h 07m

Boise Air Term. Gowen Fld

Wed 6/18

5:44 pm-6:56 pm

Nonstop2h 12m

$198

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 5/1

9:50 pm-12:50 am

Nonstop2h 00m

Boise Air Term. Gowen Fld

Tue 5/6

3:00 pm-8:45 pm

2 stops6h 45m

$202

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 5/2

7:30 pm-12:09 am

1 stop3h 39m

Boise Air Term. Gowen Fld

Sun 5/4

10:40 am-4:25 pm

1 stop6h 45m

$217

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Mon 5/19

7:57 pm-1:37 pm

1 stop16h 40m

Boise Air Term. Gowen Fld

Thu 5/22

12:36 pm-5:22 pm

1 stop5h 46m

$226

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Tue 4/29

6:00 am-12:31 pm

1 stop6h 31m

Spokane

Tue 5/6

11:08 am-7:19 pm

1 stop8h 11m

$230

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Sun 4/20

8:30 am-12:57 pm

2 stops27h 27m

Boise Air Term. Gowen Fld

Fri 4/25

10:30 pm-11:38 pm

Nonstop2h 08m

$239

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 4/18

8:22 pm-11:34 pm

Nonstop2h 12m

Boise Air Term. Gowen Fld

Mon 4/21

5:18 pm-6:28 pm

Nonstop2h 10m

$240

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Wed 5/14

10:51 am-1:37 pm

Nonstop2h 46m

Spokane

Wed 5/21

3:18 pm-5:55 pm

Nonstop2h 37m

$241

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 4/17

6:00 am-12:44 pm

1 stop5h 44m

Boise Air Term. Gowen Fld

Sun 4/20

7:00 pm-11:32 pm

1 stop5h 32m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 59 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, October is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $314). Flying from Phoenix to Idaho in June is currently the most expensive (average of $419). 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 April 1, 2025.

When flying from Phoenix 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.

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 April 1, 2025.

The most flights from PH1 to USID are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Idaho by month

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

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

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

If weather is an important factor for your trip to Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 April 1, 2025.
Read through reviews of airlines operating flights from Phoenix to Idaho, such as Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,277 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,344 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,615 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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 $51. Users have also found prices from $68 and $79 on Spirit Airlines and Hawaiian Airlines, respectively.

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

    The most popular route from Phoenix to Idaho is Phoenix Sky Harbor Intl - Spokane. You may also consider Phoenix Sky Harbor Intl - Boise Air Term. Gowen Fld or Phoenix Sky Harbor Intl - Jackson Hole.

  • 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 Southwest (86%), Envoy Air (84%) or American Airlines (80%) 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 $255, our data shows the cheapest flight currently is $100. When looking at the most popular route, (Phoenix Sky Harbor Intl - Spokane), you can expect to pay $230 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, October is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $314). Flying from Phoenix to Idaho in June is currently the most expensive (average of $419). 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.
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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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$78Average$165FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$92Average$167FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$152Average$363FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$164Average$403FlexibilityNo cancel feeOn-time71%
DeltaCheapest$168Average$462FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$169Average$263FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$196Average$499FlexibilityNo cancel feeOn-time69%
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