HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Phoenix to Idaho 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 Phoenix to Idaho

Keep the following information in mind while searching for Phoenix to Idaho flight deals. Data was last updated July 3, 2025.

Round-trip from

$137
(Alaska Airlines)

One-way from

$51
(Booking.com)

Popular in

December

Cheapest in

September

Average price

$262
From Phoenix to Idaho
Search Deals
One-way flight from Phoenix to Idaho
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 3, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/297:38 pmPHX - BOI
Nonstop2h 07mAlaska Airlines
Wed 7/305:44 pmBOI - PHX
Nonstop2h 12mAlaska Airlines
Deal found 7/3$137
This Southwest deal was found by Cheapflights users on 7/2. 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.
Fri 9/193:15 pmPHX - BOI
Nonstop2h 00mSouthwest
Mon 9/225:45 amBOI - PHX
2 stops5h 50mSouthwest
Deal found 7/2$152
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/116:39 pmAZA - BOI
Nonstop2h 02mAllegiant Air
Mon 7/1410:31 pmBOI - AZA
Nonstop2h 06mAllegiant Air
Deal found 7/2$155
This Delta deal was found by Cheapflights users on 7/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/287:32 pmPHX - BOI
1 stop3h 37mDelta
Mon 8/46:00 pmBOI - PHX
1 stop6h 42mDelta
Deal found 7/3$177
This Hawaiian Airlines deal was found by Cheapflights users on 7/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/247:38 pmPHX - BOI
Nonstop2h 07mHawaiian Airlines
Mon 7/285:44 pmBOI - PHX
Nonstop2h 12mHawaiian Airlines
Deal found 7/1$187
This FlightHub deal was found by Cheapflights users on 7/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/126:00 amPHX - BOI
1 stop4h 53mMultiple Airlines
Sun 10/199:49 pmBOI - PHX
1 stop14h 28mMultiple Airlines
Deal found 7/2$213
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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.
Fri 9/56:00 amPHX - GEG
2 stops12h 50mAlaska Airlines
Mon 9/85:45 pmGEG - PHX
1 stop6h 10mAlaska Airlines
Deal found 7/1$242
This American Airlines deal was found by Cheapflights users on 7/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/258:23 pmPHX - GEG
Nonstop2h 34mAmerican Airlines
Fri 8/16:57 amGEG - PHX
Nonstop2h 37mAmerican Airlines
Deal found 7/2$247
This Delta deal was found by Cheapflights users on 7/1. 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.
Fri 9/125:47 amPHX - GEG
1 stop6h 50mDelta
Fri 9/125:03 pmGEG - PHX
1 stop6h 33mDelta
Deal found 7/1$248
This Hawaiian Airlines deal was found by Cheapflights users on 7/2. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:00 amPHX - GEG
1 stop4h 44mHawaiian Airlines
Sun 9/283:08 pmGEG - PHX
1 stop5h 52mHawaiian Airlines
Deal found 7/2$249
This Southwest deal was found by Cheapflights users on 7/1. 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 8/510:40 amPHX - GEG
2 stops10h 50mSouthwest
Fri 8/86:45 amGEG - PHX
1 stop7h 05mSouthwest
Deal found 7/1$257
This Hawaiian Airlines deal was found by Cheapflights users on 7/2. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/231:54 pmPHX - IDA
1 stop7h 45mHawaiian Airlines
Wed 8/276:13 amIDA - PHX
1 stop7h 41mHawaiian Airlines
Deal found 7/2$278

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 July 3, 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 7/29

7:38 pm-10:45 pm

Nonstop2h 07m

Boise Air Term. Gowen Fld

Wed 7/30

5:44 pm-6:56 pm

Nonstop2h 12m

$137

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 9/19

3:15 pm-6:15 pm

Nonstop2h 00m

Boise Air Term. Gowen Fld

Mon 9/22

5:45 am-10:35 am

2 stops5h 50m

$152

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Mon 7/28

7:32 pm-12:09 am

1 stop3h 37m

Boise Air Term. Gowen Fld

Mon 8/4

6:00 pm-11:42 pm

1 stop6h 42m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 7/24

7:38 pm-10:45 pm

Nonstop2h 07m

Boise Air Term. Gowen Fld

Mon 7/28

5:44 pm-6:56 pm

Nonstop2h 12m

$187

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sun 10/12

6:00 am-11:53 am

1 stop4h 53m

Boise Air Term. Gowen Fld

Sun 10/19

9:49 pm-11:17 am

1 stop14h 28m

$213

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Fri 9/5

6:00 am-6:50 pm

2 stops12h 50m

Spokane

Mon 9/8

5:45 pm-11:55 pm

1 stop6h 10m

$242

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Fri 7/25

8:23 pm-10:57 pm

Nonstop2h 34m

Spokane

Fri 8/1

6:57 am-9:34 am

Nonstop2h 37m

$247

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Fri 9/12

5:47 am-12:37 pm

1 stop6h 50m

Spokane

Fri 9/12

5:03 pm-11:36 pm

1 stop6h 33m

$248

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 9/25

7:00 am-11:44 am

1 stop4h 44m

Spokane

Sun 9/28

3:08 pm-9:00 pm

1 stop5h 52m

$249

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Sat 8/30

8:47 pm-5:58 pm

2 stops20h 11m

Boise Air Term. Gowen Fld

Mon 9/1

10:29 pm-11:38 pm

Nonstop2h 09m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 59 results
1
2
3
...
6

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 $398). 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 July 3, 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.

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 July 3, 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
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $65 and $66 on Hawaiian Airlines and Alaska 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 Horizon Air (95%), Hawaiian Airlines (94%) or Envoy Air (90%) 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 $182, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Phoenix Sky Harbor Intl - Spokane), you can expect to pay $156 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 $398). 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 Phoenix to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
Sky Harbor Intl to Seattle flights
Sky Harbor Intl to O'Hare Intl flights
Sky Harbor Intl to John F Kennedy Intl flights
Sky Harbor Intl to Newark flights
Sky Harbor Intl to San Francisco flights
Las Vegas to Seattle flights
Sky Harbor Intl to Denver flights
Sky Harbor Intl to Los Angeles flights
Sky Harbor Intl to Las Vegas flights
Las Vegas to John F Kennedy Intl flights
Sky Harbor Intl to Dallas/Fort Worth flights
Sky Harbor Intl to Minneapolis flights
Sky Harbor Intl to Honolulu flights
Las Vegas to Los Angeles flights
Sky Harbor Intl to Portland flights
Sky Harbor Intl to Boston flights
Las Vegas to Honolulu flights
Sky Harbor Intl to San Diego flights
Sky Harbor Intl to Everett flights
Sky Harbor Intl to LaGuardia flights
Sky Harbor Intl to Atlanta flights
Sky Harbor Intl to Orlando flights
Sky Harbor Intl to Salt Lake City flights
Sky Harbor Intl to Santa Ana flights
Sky Harbor Intl to Midway flights
Sky Harbor Intl to Miami flights
Sky Harbor Intl to Hobby flights
Las Vegas to Newark flights
Las Vegas to O'Hare Intl flights
Sky Harbor Intl to George Bush Intcntl flights
Las Vegas to Hobby flights
Las Vegas to San Francisco flights
Las Vegas to Denver flights
Las Vegas to Boston flights
Sky Harbor Intl to Dulles Intl flights
Las Vegas to Everett flights
Las Vegas to Fort Lauderdale flights
Sky Harbor Intl to Baltimore flights
Sky Harbor Intl to Tampa flights
Sky Harbor Intl to Detroit flights
Sky Harbor Intl to Nashville flights
Las Vegas to LaGuardia flights
Tucson to Seattle flights
Las Vegas to George Bush Intcntl flights
Sky Harbor Intl to Fort Lauderdale flights
Las Vegas to Miami flights
Sky Harbor Intl to Reagan-National flights
Sky Harbor Intl to Kahului flights
Las Vegas to Dallas/Fort Worth flights
Tucson to Denver flights

Top 8 airlines flying from Phoenix to Idaho

Discover the top 8 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$63Average$167FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$96Average$172FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$124Average$207FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$144Average$344FlexibilityNo cancel feeOn-time75%
DeltaCheapest$156Average$440FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$159Average$427FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$168Average$260FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$196Average$350FlexibilityNo 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.