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$66+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHX
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$137
(American Airlines)

One-way from

$66
(Netflights)

Popular in

December

Cheapest in

September

Average price

$278
From Idaho to Phoenix
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One-way flight from Idaho to Phoenix
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This American Airlines deal was found by Cheapflights users on 7/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/41:57 pmBOI - PHX
Nonstop2h 09mAmerican Airlines
Mon 9/88:22 pmPHX - BOI
Nonstop2h 13mAmerican Airlines
Deal found 7/31$137
This Netflights deal was found by Cheapflights users on 7/29. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:05 pmBOI - PHX
Nonstop2h 12mAlaska Airlines
Tue 9/97:59 pmPHX - BOI
Nonstop2h 08mAlaska Airlines
Deal found 7/29$144
This Hawaiian Airlines deal was found by Cheapflights users on 7/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:05 pmBOI - PHX
Nonstop2h 12mHawaiian Airlines
Mon 9/157:59 pmPHX - BOI
Nonstop2h 08mHawaiian Airlines
Deal found 7/30$147
This Hawaiian Airlines deal was found by Cheapflights users on 7/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/95:06 amGEG - PHX
1 stop4h 44mHawaiian Airlines
Tue 9/237:00 amPHX - GEG
1 stop4h 44mHawaiian Airlines
Deal found 7/30$151
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/114:55 pmBOI - PHX
Nonstop2h 05mSouthwest
Sat 9/135:30 amPHX - BOI
1 stop7h 15mSouthwest
Deal found 7/30$152
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:45 pmGEG - PHX
1 stop6h 10mAlaska Airlines
Mon 9/84:30 pmPHX - GEG
1 stop6h 22mAlaska Airlines
Deal found 7/30$156
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:45 amBOI - PHX
1 stop7h 55mDelta
Mon 9/85:20 pmPHX - BOI
1 stop4h 40mDelta
Deal found 7/31$157
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/53:25 pmGEG - PHX
Nonstop2h 36mAmerican Airlines
Mon 9/810:35 amPHX - GEG
Nonstop2h 39mAmerican Airlines
Deal found 7/30$157
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/53:15 pmGEG - PHX
1 stop5h 15mSouthwest
Mon 9/82:30 pmPHX - GEG
Nonstop2h 35mSouthwest
Deal found 7/30$167
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:05 amGEG - PHX
1 stop7h 58mDelta
Fri 12/128:25 pmPHX - GEG
1 stop4h 14mDelta
Deal found 7/31$177
This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/912:48 pmBOI - PHX
1 stop5h 32mFrontier
Sun 10/126:00 amPHX - BOI
1 stop4h 53mFrontier
Deal found 7/31$206
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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.
Thu 11/612:08 pmGEG - PHX
1 stop5h 12mFrontier
Thu 11/136:00 amPHX - GEG
1 stop6h 08mFrontier
Deal found 7/29$214

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 July 31, 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

Thu 9/4

1:57 pm-3:06 pm

Nonstop2h 09m

Phoenix Sky Harbor Intl

Mon 9/8

8:22 pm-11:35 pm

Nonstop2h 13m

$137

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 9/4

6:05 pm-7:17 pm

Nonstop2h 12m

Phoenix Sky Harbor Intl

Tue 9/9

7:59 pm-11:07 pm

Nonstop2h 08m

$144

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 9/11

6:05 pm-7:17 pm

Nonstop2h 12m

Phoenix Sky Harbor Intl

Mon 9/15

7:59 pm-11:07 pm

Nonstop2h 08m

$147

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Tue 9/9

5:06 am-9:50 am

1 stop4h 44m

Phoenix Sky Harbor Intl

Tue 9/23

7:00 am-11:44 am

1 stop4h 44m

$151

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 9/11

4:55 pm-6:00 pm

Nonstop2h 05m

Phoenix Sky Harbor Intl

Sat 9/13

5:30 am-1:45 pm

1 stop7h 15m

$152

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Thu 9/4

5:45 pm-11:55 pm

1 stop6h 10m

Phoenix Sky Harbor Intl

Mon 9/8

4:30 pm-10:52 pm

1 stop6h 22m

$156

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 9/4

7:51 am-11:36 am

1 stop4h 45m

Phoenix Sky Harbor Intl

Tue 9/9

11:05 am-8:20 pm

1 stop8h 15m

$157

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Fri 9/5

3:25 pm-6:01 pm

Nonstop2h 36m

Phoenix Sky Harbor Intl

Mon 9/8

10:35 am-1:14 pm

Nonstop2h 39m

$157

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Fri 9/5

3:15 pm-8:30 pm

1 stop5h 15m

Phoenix Sky Harbor Intl

Mon 9/8

2:30 pm-5:05 pm

Nonstop2h 35m

$167

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Mon 12/8

5:05 am-2:03 pm

1 stop7h 58m

Phoenix Sky Harbor Intl

Fri 12/12

8:25 pm-11:39 pm

1 stop4h 14m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 51 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 July 31, 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 July 31, 2025.

The most flights from USID to PH1 are scheduled on a Thursday (7 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Phoenix

Get insights into the airlines that provide service to Phoenix. 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 Phoenix. Reviews last updated July 31, 2025.
Read through reviews of airlines operating flights from Idaho to Phoenix, such as Alaska Airlines, Southwest, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

  • 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 $66 on Alaska Airlines. Other airlines that offer cheap prices include Hawaiian Airlines from $67 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 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: Alaska Airlines (96%), Horizon Air (96%), Hawaiian Airlines (95%).

  • What are the cheapest flights from Idaho to Phoenix?

    The cheapest flight price from Idaho to Phoenix is $73. On average you can expect to pay $358. The most popular route, (Spokane - Phoenix Sky Harbor Intl), can usually be booked for $151.

  • 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.

See more FAQs

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Alternative routes for Idaho to Phoenix

See prices for flight routes from nearby airports that may be better suited for you.
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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$80Average$204FlexibilityNo cancel feeOn-time88%
Hawaiian AirlinesCheapest$91Average$228FlexibilityNo cancel feeOn-time85%
Spirit AirlinesCheapest$102Average$170FlexibilityNo cancel feeOn-time65%
DeltaCheapest$149Average$451FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$157Average$357FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$159Average$285FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$181Average$447FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$515FlexibilityNo cancel feeOn-time69%

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