HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Phoenix

$76+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHX
Jun 5 — Jun 121
Fri 6/5
Fri 6/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho to Phoenix with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 May 6, 2026.

This Expedia deal was found by Cheapflights users on 5/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/21:25 pm
BOI
-
PHX
1 stop21h 40m
Multiple Airlines
Sat 6/67:59 pm
PHX
-
BOI
Nonstop2h 12m
Multiple Airlines
Deal found 5/2$204
This CheapOair deal was found by Cheapflights users on 5/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:25 pm
BOI
-
PHX
1 stop19h 19m
Frontier
Sat 5/236:51 pm
PHX
-
BOI
1 stop16h 39m
Frontier
Deal found 5/2$206
This Expedia deal was found by Cheapflights users on 5/5. 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.
Tue 6/21:25 pm
BOI
-
PHX
1 stop26h 58m
Multiple Airlines
Tue 6/97:59 pm
PHX
-
BOI
Nonstop2h 12m
Multiple Airlines
Deal found 5/5$209
This Frontier deal was found by Cheapflights users on 5/4. 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.
Tue 8/41:25 pm
BOI
-
PHX
1 stop11h 07m
Frontier
Thu 8/66:40 am
PHX
-
BOI
1 stop4h 49m
Frontier
Deal found 5/4$210
This CheapOair deal was found by Cheapflights users on 5/5. 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.
Tue 6/21:25 pm
BOI
-
PHX
1 stop21h 40m
Frontier
Sat 6/68:40 am
PHX
-
BOI
1 stop26h 58m
Frontier
Deal found 5/5$214
This CheapOair deal was found by Cheapflights users on 5/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/231:25 pm
BOI
-
PHX
1 stop27h 23m
Frontier
Sat 6/274:53 pm
PHX
-
BOI
1 stop18h 37m
Frontier
Deal found 5/3$215
This Alaska Airlines deal was found by Cheapflights users on 5/5. 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 6/26:08 pm
BOI
-
PHX
Nonstop2h 09m
Alaska Airlines
Wed 6/37:59 pm
PHX
-
BOI
Nonstop2h 12m
Alaska Airlines
Deal found 5/5$217
This CheapOair deal was found by Cheapflights users on 5/4. 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.
Sun 6/211:25 pm
BOI
-
PHX
1 stop19h 20m
Frontier
Wed 6/242:15 pm
PHX
-
BOI
1 stop21h 15m
Frontier
Deal found 5/4$220
This Frontier deal was found by Cheapflights users on 5/4. 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.
Sun 8/231:04 pm
BOI
-
PHX
1 stop8h 45m
Frontier
Thu 8/275:15 am
PHX
-
BOI
1 stop5h 54m
Frontier
Deal found 5/4$224
This Alaska Airlines deal was found by Cheapflights users on 5/2. 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.
Fri 6/56:08 pm
BOI
-
PHX
Nonstop2h 09m
Alaska Airlines
Tue 6/97:59 pm
PHX
-
BOI
Nonstop2h 12m
Alaska Airlines
Deal found 5/2$227
This Frontier deal was found by Cheapflights users on 5/2. 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.
Mon 5/1812:33 pm
GEG
-
PHX
1 stop8h 37m
Frontier
Fri 5/225:15 am
PHX
-
GEG
1 stop6h 23m
Frontier
Deal found 5/2$235
This Southwest deal was found by Cheapflights users on 5/4. 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 6/32:25 pm
GEG
-
PHX
Nonstop2h 35m
Southwest
Wed 6/109:35 pm
PHX
-
GEG
Nonstop2h 30m
Southwest
Deal found 5/4$237

Find flight deals from Idaho to Phoenix

Keep the following information in mind while searching for Idaho to Phoenix flight deals. Data was last updated May 6, 2026.

Round-trip from

$204
(Expedia)

One-way from

$76
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$290
From Idaho to Phoenix
Search Deals
One-way flight from Idaho to Phoenix
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. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 6, 2026.
Use the filters below to find and compare flights from Idaho to Phoenix that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sat 6/6

3:14 pm-8:51 pm

1 stop6h 37m

Phoenix Sky Harbor Intl

Mon 6/8

12:05 pm-7:13 pm

1 stop6h 08m

$247
Quickest round-trip

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 5/29

7:55 pm-9:00 pm

Nonstop2h 05m

Phoenix Sky Harbor Intl

Mon 6/1

9:55 pm-1:00 am

Nonstop2h 05m

$247

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Tue 6/2

1:59 pm-8:58 pm

1 stop6h 59m

Phoenix Sky Harbor Intl

Wed 6/3

4:23 pm-9:45 pm

1 stop5h 22m

$257

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 5/29

12:55 pm-6:05 pm

1 stop6h 10m

Phoenix Sky Harbor Intl

Mon 6/1

5:16 pm-12:04 am

1 stop5h 48m

$257

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Wed 5/27

1:05 pm-5:50 pm

1 stop5h 45m

Phoenix Sky Harbor Intl

Sun 5/31

6:05 am-11:45 am

1 stop4h 40m

$257

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Mon 6/1

10:50 am-3:59 pm

1 stop6h 09m

Phoenix Sky Harbor Intl

Mon 6/8

5:29 pm-11:55 pm

1 stop5h 26m

$257

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 5/28

1:20 pm-8:50 pm

1 stop8h 30m

Phoenix Sky Harbor Intl

Sun 5/31

6:05 am-11:45 am

1 stop4h 40m

$262

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sat 6/13

5:10 pm-9:10 pm

1 stop5h 00m

Phoenix Sky Harbor Intl

Tue 6/16

9:30 pm-12:30 am

Nonstop2h 00m

$267

HaileyPhoenix

SUN - PHX

SUNPHX

Hailey Sun Valley-Friedman

Wed 7/8

3:15 pm-6:07 pm

1 stop3h 52m

Phoenix Sky Harbor Intl

Fri 7/10

9:45 am-2:31 pm

1 stop3h 46m

$271

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Sat 5/30

2:25 pm-5:00 pm

Nonstop2h 35m

Phoenix Sky Harbor Intl

Sat 6/6

7:40 am-10:15 am

Nonstop2h 35m

$271

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/5

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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

How far ahead should I book a flight from Idaho to Phoenix?

The best time to book flights from Idaho to Phoenix is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, July is the cheapest month in which you can book a flight from Idaho to Phoenix (average of $71). Flying from Idaho to Phoenix in March is currently the most expensive (average of $93). 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 May 6, 2026.

When flying from Idaho to Phoenix, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 36% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Idaho to Phoenix. Price data was last updated on May 2, 2026.

Travelers seeking maximum savings on their Idaho to Phoenix flight should consider departing on Monday evenings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 May 6, 2026.

The most flights from USID to PH1 are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from Idaho to Phoenix?

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 05m. Fly via Delta, Southwest, 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 $51 on Allegiant Air. Other airlines that offer cheap prices include Hawaiian Airlines from $78 and Southwest from $78 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 (92%), Porter Airlines (91%), Horizon Air (90%).

  • What are the cheapest flights from Idaho to Phoenix?

    The cheapest flight price from Idaho to Phoenix is $118. On average you can expect to pay $470. The most popular route, (Boise Air Term. Gowen Fld - Phoenix Sky Harbor Intl), can usually be booked for $229.

  • 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, July is the cheapest month in which you can book a flight from Idaho to Phoenix (average of $71). Flying from Idaho to Phoenix in March is currently the most expensive (average of $93). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Phoenix

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Las Vegas flights
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
Los Angeles to Las Vegas flights
Seattle to Las Vegas flights
O'Hare Intl to Las Vegas flights
Hobby to Las Vegas flights
San Francisco to Las Vegas flights
Atlanta to Las Vegas flights
Dulles Intl to Las Vegas flights
George Bush Intcntl to Las Vegas flights
Detroit to Las Vegas flights
LaGuardia to Las Vegas flights
Santa Ana to Las Vegas flights
Denver to Las Vegas flights
Baltimore to Las Vegas flights
John F Kennedy Intl to Sky Harbor Intl flights
Reagan-National to Las Vegas flights
Ontario to Las Vegas flights
Boston to Las Vegas flights
O'Hare Intl to Sky Harbor Intl flights
Newark to Sky Harbor Intl flights
Orlando to Las Vegas flights
Seattle to Sky Harbor Intl flights
Minneapolis to Las Vegas flights
Philadelphia to Las Vegas flights
Cleveland to Las Vegas flights
Austin to Las Vegas flights
San Jose to Las Vegas flights
Midway to Las Vegas flights
Burbank to Las Vegas flights
Fort Lauderdale to Las Vegas flights
Portland to Las Vegas flights
Minneapolis to Sky Harbor Intl flights
San Francisco to Sky Harbor Intl flights
San Diego to Las Vegas flights
Tampa to Las Vegas flights
Cincinnati to Las Vegas flights
Sky Harbor Intl to Las Vegas flights
Detroit to Sky Harbor Intl flights
Charlotte to Las Vegas flights
Dallas/Fort Worth to Sky Harbor Intl flights
Love Field to Las Vegas flights
Stewart to Las Vegas flights
Reno to Las Vegas flights
Los Angeles to Sky Harbor Intl flights
Dulles Intl to Sky Harbor Intl flights
Miami to Las Vegas flights
LaGuardia to Sky Harbor Intl flights
San Antonio to Las Vegas flights

Top 7 airlines flying from Idaho to Phoenix

Discover the top 7 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 May 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$82Average$161FlexibilityNo cancel feeOn-time88%
DeltaCheapest$88Average$407FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$91Average$244FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$157Average$291FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$157Average$269FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$157Average$354FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$325FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.