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Phoenix

$54+ 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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHX
mar 4 — mar 111
qua 3/4
qua 3/11
1 adult, Economy
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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 fevereiro 2, 2026.

This CheapOair deal was found by Cheapflights users on 1/31. 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.
qui 2/2612:22 pm
GEG
-
PHX
1 stop18h 20m
Frontier
sáb 2/2810:51 pm
PHX
-
GEG
1 stop14h 23m
Frontier
Deal found 1/31$149
This Expedia deal was found by Cheapflights users on 1/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 2/1912:22 pm
GEG
-
PHX
1 stop18h 20m
Frontier
qui 2/266:00 am
PHX
-
GEG
1 stop6h 27m
Frontier
Deal found 1/31$164
This CheapOair deal was found by Cheapflights users on 1/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 2/1912:22 pm
GEG
-
PHX
1 stop11h 19m
Frontier
qua 2/256:51 pm
PHX
-
GEG
1 stop17h 36m
Frontier
Deal found 1/30$165
This Expedia deal was found by Cheapflights users on 2/1. 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.
qui 4/2311:53 am
BOI
-
PHX
1 stop6h 50m
Multiple Airlines
ter 4/286:00 am
PHX
-
BOI
1 stop8h 33m
Multiple Airlines
Deal found 2/1$169
This Southwest deal was found by Cheapflights users on 1/31. 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.
ter 2/2410:45 am
BOI
-
PHX
2 stops9h 10m
Southwest
sáb 2/285:55 pm
PHX
-
BOI
1 stop6h 25m
Southwest
Deal found 1/31$170
This Southwest deal was found by Cheapflights users on 2/1. 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.
sáb 2/283:00 pm
BOI
-
PHX
Nonstop2h 05m
Southwest
seg 3/27:15 am
PHX
-
BOI
1 stop5h 05m
Southwest
Deal found 2/1$172
This Orbitz deal was found by Cheapflights users on 1/31. 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.
seg 2/234:02 pm
BOI
-
PHX
1 stop7h 57m
Multiple Airlines
qui 2/266:00 am
PHX
-
BOI
1 stop5h 51m
Multiple Airlines
Deal found 1/31$173
This Delta deal was found by Cheapflights users on 2/1. 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.
seg 3/167:30 pm
BOI
-
PHX
1 stop5h 28m
Delta
ter 3/178:45 am
PHX
-
BOI
1 stop6h 15m
Delta
Deal found 2/1$174
This Alaska Airlines deal was found by Cheapflights users on 1/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 2/237:15 am
BOI
-
PHX
Nonstop2h 22m
Alaska Airlines
sex 2/277:52 pm
PHX
-
BOI
Nonstop2h 17m
Alaska Airlines
Deal found 1/31$177
This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 2/228:12 pm
GEG
-
PHX
Nonstop2h 47m
Frontier
sáb 2/2810:51 pm
PHX
-
GEG
1 stop14h 23m
Frontier
Deal found 2/1$178
This Frontier deal was found by Cheapflights users on 1/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 2/2612:22 pm
GEG
-
PHX
1 stop11h 19m
Frontier
dom 3/15:22 pm
PHX
-
GEG
Nonstop2h 55m
Frontier
Deal found 1/31$179
This Southwest deal was found by Cheapflights users on 1/31. 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.
qua 5/134:05 pm
BOI
-
PHX
Nonstop2h 05m
Southwest
sáb 5/163:20 pm
PHX
-
BOI
1 stop5h 35m
Southwest
Deal found 1/31$180

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 fevereiro 2, 2026.

Round-trip from

$149
(CheapOair)

One-way from

$54
(Frontier)

Popular in

March

Cheapest in

September

Average price

$291
From Idaho to Phoenix
Search Deals
One-way flight from Idaho to Phoenix
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 fevereiro 2, 2026.
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

seg 3/23

5:25 am-6:35 am

Nonstop2h 10m

Phoenix Sky Harbor Intl

sáb 3/28

8:15 am-4:55 pm

1 stop7h 40m

$172

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

sex 3/27

9:00 am-4:40 pm

1 stop8h 40m

Phoenix Sky Harbor Intl

dom 4/5

5:35 pm-11:45 pm

1 stop5h 10m

$174

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

qua 4/8

10:05 am-3:45 pm

1 stop6h 40m

Phoenix Sky Harbor Intl

dom 4/12

10:45 pm-1:50 am

Nonstop2h 05m

$177

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

sex 2/27

3:40 pm-5:45 pm

Nonstop2h 05m

Phoenix Sky Harbor Intl

seg 3/9

10:50 pm-1:55 am

Nonstop2h 05m

$177

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

qui 3/5

7:15 am-9:37 am

Nonstop2h 22m

Phoenix Sky Harbor Intl

qui 3/12

6:00 am-3:08 pm

1 stop8h 08m

$187

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

qua 4/22

10:41 am-4:45 pm

1 stop7h 04m

Phoenix Sky Harbor Intl

seg 4/27

11:45 am-7:55 pm

1 stop7h 10m

$187

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

seg 3/2

3:55 pm-8:30 pm

1 stop4h 35m

Phoenix Sky Harbor Intl

seg 3/9

10:50 pm-1:55 am

Nonstop2h 05m

$187

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

sex 3/6

6:10 pm-11:55 pm

1 stop5h 45m

Phoenix Sky Harbor Intl

seg 3/9

10:50 pm-1:55 am

Nonstop2h 05m

$187

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

qui 3/5

6:10 pm-11:55 pm

1 stop5h 45m

Phoenix Sky Harbor Intl

seg 3/9

10:50 pm-1:55 am

Nonstop2h 05m

$187

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

ter 4/28

6:00 am-11:14 am

1 stop5h 14m

Phoenix Sky Harbor Intl

qua 4/29

6:37 am-9:31 pm

2 stops14h 54m

$225

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

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, August is the cheapest month in which you can book a flight from Idaho to Phoenix (average of $82). Flying from Idaho to Phoenix in March is currently the most expensive (average of $124). 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 fevereiro 2, 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 38% 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 January 31, 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 fevereiro 2, 2026.

The most flights from USID to PH1 are scheduled on a Friday (12 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 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 10m. Fly via Southwest, Delta, 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 $55 on Allegiant Air. Other airlines that offer cheap prices include Southwest from $76 and Alaska Airlines 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 Spokane - Phoenix Sky Harbor Intl, Boise Air Term. Gowen Fld - 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: Porter Airlines (93%), Alaska Airlines (86%), SkyWest Airlines (83%).

  • What are the cheapest flights from Idaho to Phoenix?

    The cheapest flight price from Idaho to Phoenix is $88. On average you can expect to pay $680. The most popular route, (Spokane - Phoenix Sky Harbor Intl), can usually be booked for $179.

  • 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, August is the cheapest month in which you can book a flight from Idaho to Phoenix (average of $82). Flying from Idaho to Phoenix in March is currently the most expensive (average of $124). 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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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 fevereiro 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$82Average$176FlexibilityNo cancel feeOn-time88%
DeltaCheapest$88Average$372FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$88Average$236FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$157Average$298FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$157Average$270FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$158Average$348FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$183Average$374FlexibilityNo cancel feeOn-time69%

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