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$47+ 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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHX
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
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 septiembre 11, 2025.

Round-trip from

$144
(Delta)

One-way from

$47
(Southwest)

Popular in

December

Cheapest in

September

Average price

$210
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. 20% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 11, 2025.

This Southwest deal was found by Cheapflights users on 9/9. 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.
vie. 10/245:25 pmBOI - PHX
Nonstop2h 05mSouthwest
sáb. 10/257:45 amPHX - BOI
Nonstop2h 10mSouthwest
Deal found 9/9$144
This Southwest deal was found by Cheapflights users on 9/11. 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.
lun. 10/275:40 pmBOI - PHX
1 stop4h 20mSouthwest
mar. 11/48:00 amPHX - BOI
1 stop4h 50mSouthwest
Deal found 9/11$147
This Southwest deal was found by Cheapflights users on 9/10. 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.
mié. 10/223:15 pmBOI - PHX
1 stop7h 45mSouthwest
vie. 10/248:25 amPHX - BOI
1 stop7h 25mSouthwest
Deal found 9/10$149
This Southwest deal was found by Cheapflights users on 9/10. 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.
sáb. 12/63:25 pmBOI - PHX
1 stop4h 30mSouthwest
lun. 12/85:25 amPHX - BOI
1 stop4h 50mSouthwest
Deal found 9/10$153
This Southwest deal was found by Cheapflights users on 9/10. 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.
mié. 11/127:20 amBOI - PHX
2 stops7h 20mSouthwest
vie. 11/141:15 pmPHX - BOI
Nonstop2h 10mSouthwest
Deal found 9/10$155
This American Airlines deal was found by Cheapflights users on 9/10. 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.
mié. 10/296:40 amBOI - PHX
Nonstop2h 16mAmerican Airlines
sáb. 11/14:20 pmPHX - BOI
Nonstop2h 17mAmerican Airlines
Deal found 9/10$157
This Southwest deal was found by Cheapflights users on 9/10. 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.
mié. 10/223:15 pmBOI - PHX
1 stop7h 45mSouthwest
jue. 10/236:10 pmPHX - BOI
1 stop5h 10mSouthwest
Deal found 9/10$158
This American Airlines deal was found by Cheapflights users on 9/10. 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.
mar. 10/214:40 pmBOI - PHX
Nonstop2h 14mAmerican Airlines
lun. 10/278:20 pmPHX - BOI
Nonstop2h 12mAmerican Airlines
Deal found 9/10$160
This Southwest deal was found by Cheapflights users on 9/9. 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.
mié. 10/155:55 pmBOI - PHX
1 stop5h 00mSouthwest
vie. 10/177:45 amPHX - BOI
Nonstop2h 10mSouthwest
Deal found 9/9$163
This Booking.com deal was found by Cheapflights users on 9/10. 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.
dom. 10/512:22 pmBOI - PHX
1 stop20h 38mFrontier
mié. 10/812:14 pmPHX - BOI
1 stop22h 29mFrontier
Deal found 9/10$164
This Hawaiian Airlines deal was found by Cheapflights users on 9/11. 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.
mié. 10/297:35 amBOI - PHX
Nonstop2h 14mHawaiian Airlines
sáb. 11/17:00 amPHX - BOI
1 stop7h 12mHawaiian Airlines
Deal found 9/11$167
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
jue. 12/114:35 pmGEG - PHX
Nonstop2h 39mMultiple Airlines
jue. 12/189:23 amPHX - GEG
1 stop10h 38mMultiple Airlines
Deal found 9/10$170

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 septiembre 11, 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

mié. 10/22

3:15 pm-10:00 pm

1 stop7h 45m

Phoenix Sky Harbor Intl

mié. 10/29

4:05 pm-11:20 pm

2 stops6h 15m

$157

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

mar. 11/4

6:09 pm-8:15 pm

Nonstop2h 06m

Phoenix Sky Harbor Intl

mié. 11/12

10:31 am-12:52 pm

Nonstop2h 21m

$157

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

mar. 3/3

8:45 am-11:00 am

Nonstop2h 15m

Phoenix Sky Harbor Intl

mié. 3/4

11:45 am-1:49 pm

Nonstop2h 04m

$157

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

mar. 12/2

10:50 am-5:35 pm

2 stops6h 45m

Phoenix Sky Harbor Intl

mié. 12/3

8:00 am-12:50 pm

1 stop4h 50m

$163

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

mié. 10/29

7:35 am-8:49 am

Nonstop2h 14m

Phoenix Sky Harbor Intl

sáb. 11/1

7:00 am-3:12 pm

1 stop7h 12m

$167

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

dom. 3/1

5:40 am-11:16 am

1 stop5h 36m

Phoenix Sky Harbor Intl

mié. 3/4

6:40 am-1:07 pm

1 stop6h 27m

$169

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

vie. 11/7

4:50 pm-6:50 pm

Nonstop2h 00m

Phoenix Sky Harbor Intl

mar. 11/11

9:00 am-11:10 am

Nonstop2h 10m

$171

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

lun. 11/10

5:40 pm-11:35 pm

1 stop5h 55m

Phoenix Sky Harbor Intl

mié. 11/12

3:10 pm-10:15 pm

2 stops7h 05m

$172

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

mar. 3/3

5:00 pm-10:11 pm

1 stop5h 11m

Phoenix Sky Harbor Intl

mié. 3/4

8:00 am-12:44 pm

1 stop4h 44m

$176

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

mar. 10/21

7:00 am-3:17 pm

1 stop8h 17m

Phoenix Sky Harbor Intl

jue. 10/23

4:17 pm-10:41 pm

1 stop6h 24m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 60 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 septiembre 11, 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 septiembre 11, 2025.

The most flights from USID to PH1 are scheduled on a Monday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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.

  • How long is the flight from Idaho to Phoenix?

    There are many flights that can get you from Idaho to Phoenix in 2h 06m. Fly via Southwest, Hawaiian Airlines, or Alaska Airlines to get the fastest option. The distance from Idaho to Phoenix 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 Idaho to Phoenix one-way?

    One-way options have recently been found by users for as low as $47 on Southwest. Other airlines that offer cheap prices include Hawaiian Airlines from $88 and Alaska Airlines from $88 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: SkyWest Airlines (88%), American Airlines (88%), Southwest (86%).

  • What are the cheapest flights from Idaho to Phoenix?

    The cheapest flight price from Idaho to Phoenix is $78. On average you can expect to pay $318. The most popular route, (Boise Air Term. Gowen Fld - Phoenix Sky Harbor Intl), can usually be booked for $94.

  • 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.

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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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$82Average$201FlexibilityNo cancel feeOn-time88%
Hawaiian AirlinesCheapest$91Average$227FlexibilityNo cancel feeOn-time85%
Spirit AirlinesCheapest$102Average$170FlexibilityNo cancel feeOn-time65%
DeltaCheapest$108Average$446FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$157Average$360FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$159Average$284FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$169Average$437FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$503FlexibilityNo cancel feeOn-time69%

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