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Idaho

$29+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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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 December 4, 2025.

This Frontier deal was found by Cheapflights users on 12/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:02 pmPHX - GEG
Nonstop2h 51mFrontier
Sun 1/412:02 pmGEG - PHX
1 stop11h 27mFrontier
Deal found 12/2$131
This Kiwi.com deal was found by Cheapflights users on 12/1. 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 12/1210:36 pmPHX - IDA
1 stop13h 23mMultiple Airlines
Sun 12/144:39 pmIDA - PHX
1 stop16h 09mMultiple Airlines
Deal found 12/1$132
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:38 pmPHX - BOI
Nonstop2h 21mAlaska Airlines
Tue 1/611:53 amBOI - PHX
Nonstop2h 08mAlaska Airlines
Deal found 12/2$159
This Super.com deal was found by Cheapflights users on 12/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/182:02 pmPHX - GEG
Nonstop2h 51mFrontier
Thu 1/14:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 12/1$165
This Priceline deal was found by Cheapflights users on 12/2. 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 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
Thu 12/254:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 12/2$169
This Mytrip deal was found by Cheapflights users on 12/3. 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.
Wed 12/174:32 pmPHX - BOI
1 stop19h 11mFrontier
Sat 12/2012:54 pmBOI - PHX
1 stop19h 27mFrontier
Deal found 12/3$172
This Mytrip deal was found by Cheapflights users on 12/2. 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 Mytrip 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
Sun 1/412:38 pmBOI - PHX
1 stop19h 43mFrontier
Deal found 12/2$173
This Expedia deal was found by Cheapflights users on 12/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:00 amPHX - BOI
1 stop8h 06mMultiple Airlines
Sun 1/412:38 pmBOI - PHX
1 stop11h 51mMultiple Airlines
Deal found 12/1$174
This Southwest deal was found by Cheapflights users on 12/2. 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.
Tue 12/308:20 pmPHX - BOI
1 stop5h 05mSouthwest
Tue 1/65:25 pmBOI - PHX
1 stop4h 40mSouthwest
Deal found 12/2$176
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1610:48 amPHX - BOI
Nonstop2h 24mAlaska Airlines
Tue 1/1312:21 pmBOI - PHX
Nonstop2h 08mAlaska Airlines
Deal found 12/2$179
This Southwest deal was found by Cheapflights users on 12/1. 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 12/162:40 pmPHX - BOI
Nonstop2h 10mSouthwest
Tue 1/133:00 pmBOI - PHX
Nonstop2h 05mSouthwest
Deal found 12/1$181
This Mytrip deal was found by Cheapflights users on 12/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:31 pmPHX - GEG
1 stop13h 36mFrontier
Tue 12/304:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 12/1$181

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 December 4, 2025.

Round-trip from

$91
(American Airlines)

One-way from

$29
(Frontier)

Popular in

December

Cheapest in

September

Average price

$339
From Phoenix to Idaho
Search Deals
One-way flight from Phoenix to Idaho
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 4, 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

Wed 2/4

6:00 am-10:40 am

1 stop4h 40m

Boise Air Term. Gowen Fld

Tue 2/10

3:00 pm-5:05 pm

Nonstop2h 05m

$107

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 1/21

3:11 pm-5:29 pm

Nonstop2h 18m

Boise Air Term. Gowen Fld

Sat 1/24

7:00 am-7:25 pm

2 stops12h 25m

$132

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 1/8

7:00 am-12:44 pm

1 stop6h 44m

Spokane

Mon 1/12

12:10 pm-8:55 pm

1 stop7h 45m

$142

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Tue 2/3

7:00 am-12:44 pm

1 stop6h 44m

Spokane

Sat 2/7

12:32 pm-6:27 pm

1 stop4h 55m

$142

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 2/5

8:50 am-11:00 am

Nonstop2h 10m

Boise Air Term. Gowen Fld

Tue 2/10

7:05 am-2:35 pm

2 stops7h 30m

$146

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 12/18

2:02 pm-3:53 pm

Nonstop2h 51m

Spokane

Thu 1/1

4:48 pm-8:52 pm

Nonstop3h 04m

$165

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 2/26

4:42 pm-8:56 pm

1 stop5h 14m

Spokane

Sun 3/1

3:40 pm-11:50 pm

1 stop7h 10m

$165

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Fri 1/16

6:20 am-12:37 pm

1 stop7h 17m

Spokane

Fri 1/30

1:20 pm-7:04 pm

1 stop4h 44m

$165

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 1/14

2:25 pm-8:45 pm

1 stop6h 20m

Boise Air Term. Gowen Fld

Sun 1/18

10:45 am-7:55 pm

2 stops9h 10m

$165

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 1/8

3:11 pm-5:29 pm

Nonstop2h 18m

Boise Air Term. Gowen Fld

Mon 1/12

12:21 pm-2:29 pm

Nonstop2h 08m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

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, October is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $84). Flying from Phoenix to Idaho in February is currently the most expensive (average of $159). 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 December 4, 2025.

It’s typically best to fly out from Phoenix to Idaho in the evening. Doing so could potentially save you 21% on the flight price compared to flying in the morning, 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 November 29, 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 December 4, 2025.

The most flights from PH1 to USID are scheduled on a Thursday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

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 December 4, 2025.
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.
Alaska Airlines
8.0
Very good
11,402 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Alaska Airlines
8.0
Very good
11,402 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Southwest
8.0
Very good
4,250 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Delta
7.9
Good
8,011 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
American Airlines
7.2
Good
11,047 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Allegiant Air
7.2
Good
698 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

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?

    Southwest, Alaska Airlines, and Frontier can get you from Phoenix to Idaho in just under 2h 18m. Your travel time can differ by up to 2h 22m. The distance from Phoenix 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 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?

    The most popular route from Phoenix to Idaho is Phoenix Sky Harbor Intl - Boise Air Term. Gowen Fld. You may also consider Phoenix Sky Harbor Intl - Spokane 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 Envoy Air (92%), American Airlines (86%) or SkyWest Airlines (82%) 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 $249, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Phoenix Sky Harbor Intl - Boise Air Term. Gowen Fld), you can expect to pay $91 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 $84). Flying from Phoenix to Idaho in February is currently the most expensive (average of $159). 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 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$56Average$164FlexibilityNo cancel feeOn-time88%
DeltaCheapest$88Average$415FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$136Average$206FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$144Average$249FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$147Average$258FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$157Average$368FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$247Average$424FlexibilityNo cancel feeOn-time69%

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