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$81+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHX
Mar 17 — Mar 241
Mon 3/17
Mon 3/24
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 March 12, 2025.

Round-trip from

$187
(Hawaiian Airlines)

One-way from

$81
(Frontier)

Popular in

December

Cheapest in

September

Average price

$360
From Idaho to Phoenix
Search Deals
One-way flight from Idaho to Phoenix
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 12, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 3/11. 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.
Mon 4/212:47 pmBOI - PHX
1 stop7h 13mHawaiian Airlines
Tue 4/227:59 pmPHX - BOI
Nonstop2h 16mHawaiian Airlines
Deal found 3/11$187
This Mytrip deal was found by Cheapflights users on 3/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/281:31 pmBOI - PHX
2 stops33h 31mSpirit Airlines
Tue 4/14:02 pmPHX - BOI
1 stop19h 34mSpirit Airlines
Deal found 3/11$189
This Southwest deal was found by Cheapflights users on 3/11. 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.
Sat 4/55:30 amBOI - PHX
Nonstop2h 10mSouthwest
Wed 4/94:35 pmPHX - BOI
2 stops5h 55mSouthwest
Deal found 3/11$192
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/48:18 amBOI - PHX
Nonstop2h 09mAlaska Airlines
Tue 4/87:31 pmPHX - BOI
Nonstop2h 09mAlaska Airlines
Deal found 3/11$197
This United Airlines deal was found by Cheapflights users on 3/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/92:00 pmBOI - PHX
1 stop5h 32mUnited Airlines
Sun 5/115:15 amPHX - BOI
1 stop5h 06mUnited Airlines
Deal found 3/11$199
This American Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 5/205:10 pmBOI - PHX
Nonstop2h 11mAmerican Airlines
Wed 6/41:35 pmPHX - BOI
Nonstop2h 05mAmerican Airlines
Deal found 3/12$204
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/45:59 pmBOI - PHX
1 stop6h 46mDelta
Tue 4/88:50 amPHX - BOI
1 stop8h 36mDelta
Deal found 3/11$217
This Delta deal was found by Cheapflights users on 3/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/209:05 amGEG - PHX
1 stop7h 20mDelta
Fri 5/26:10 amPHX - GEG
1 stop5h 32mDelta
Deal found 3/10$225
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/27:30 pmGEG - PHX
1 stop4h 42mAlaska Airlines
Wed 4/910:07 amPHX - GEG
1 stop4h 07mAlaska Airlines
Deal found 3/10$230
This Mytrip deal was found by Cheapflights users on 3/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/241:31 pmBOI - PHX
1 stop26h 36mMultiple Airlines
Fri 3/284:02 pmPHX - BOI
2 stops20h 32mMultiple Airlines
Deal found 3/10$234
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Sun 4/206:27 amGEG - PHX
Nonstop2h 38mAmerican Airlines
Sat 5/310:55 amPHX - GEG
Nonstop2h 43mAmerican Airlines
Deal found 3/10$236
This Southwest deal was found by Cheapflights users on 3/11. 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.
Tue 4/223:20 pmGEG - PHX
Nonstop2h 35mSouthwest
Tue 4/299:20 amPHX - GEG
Nonstop2h 50mSouthwest
Deal found 3/11$241

Find flights from Idaho to Phoenix within your budget

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 March 12, 2025.

Fly from

Idaho

Fly to

Phoenix

Route

Depart

Return

Price

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Mon 4/21

2:47 pm-9:00 pm

1 stop7h 13m

Phoenix Sky Harbor Intl

Tue 4/22

7:59 pm-11:15 pm

Nonstop2h 16m

$187

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 3/28

1:31 pm-10:02 pm

2 stops33h 31m

Phoenix Sky Harbor Intl

Tue 4/1

4:02 pm-12:36 pm

1 stop19h 34m

$189

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sat 4/5

5:30 am-6:40 am

Nonstop2h 10m

Phoenix Sky Harbor Intl

Wed 4/9

4:35 pm-11:30 pm

2 stops5h 55m

$192

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 4/4

8:18 am-9:27 am

Nonstop2h 09m

Phoenix Sky Harbor Intl

Tue 4/8

7:31 pm-10:40 pm

Nonstop2h 09m

$197

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 5/9

2:00 pm-6:32 pm

1 stop5h 32m

Phoenix Sky Harbor Intl

Sun 5/11

5:15 am-11:21 am

1 stop5h 06m

$199

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Tue 5/20

5:10 pm-6:21 pm

Nonstop2h 11m

Phoenix Sky Harbor Intl

Wed 6/4

1:35 pm-4:40 pm

Nonstop2h 05m

$204

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 4/4

8:15 pm-11:45 pm

1 stop4h 30m

Phoenix Sky Harbor Intl

Wed 4/9

6:00 am-1:25 pm

1 stop6h 25m

$217

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Sun 4/20

9:05 am-4:25 pm

1 stop7h 20m

Phoenix Sky Harbor Intl

Fri 5/2

6:10 am-11:42 am

1 stop5h 32m

$225

SpokanePhoenix

GEG - PHX

GEGPHX

Spokane

Wed 4/2

7:30 pm-12:12 am

1 stop4h 42m

Phoenix Sky Harbor Intl

Wed 4/9

10:07 am-2:14 pm

1 stop4h 07m

$230

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Mon 3/24

1:31 pm-3:07 pm

1 stop26h 36m

Phoenix Sky Harbor Intl

Fri 3/28

4:02 pm-1:34 pm

2 stops20h 32m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 56 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.

Travel insights for flights from Idaho to Phoenix

Get recent, data-driven insights about flights from Idaho to Phoenix including ideal travel times, pricing trends, and more.

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 March 12, 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 March 12, 2025.

The most flights from USID to PH1 are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Phoenix by month

Plan your trip to Phoenix by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Phoenix ranges from 0.0 - 1.1 inches per month. July is typically the wettest month, when rainfall can reach 1.1 in. June is typically the driest time to visit Phoenix when rainfall is around 0.0 in.

Temperature in Phoenix by month

Plan your trip to Phoenix by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Phoenix, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 95.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 55.4 F).

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 March 12, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Idaho to Phoenix. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,296 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest
8.1
Very good
4,296 reviews
Southwest
8.1
Very good
4,296 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Alaska Airlines
8.0
Very good
9,735 reviews
Southwest
8.1
Very good
4,296 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta
8.0
Very good
7,953 reviews
Southwest
8.1
Very good
4,296 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Hawaiian Airlines
7.9
Good
2,320 reviews
Southwest
8.1
Very good
4,296 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines
7.4
Good
8,623 reviews
Southwest
8.1
Very good
4,296 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $81 on Frontier. Other airlines that offer cheap prices include Hawaiian Airlines from $89 and Delta from $89 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: Horizon Air (100%), Southwest (95%), Envoy Air (90%).

  • What are the cheapest flights from Idaho to Phoenix?

    The cheapest flight price from Idaho to Phoenix is $98. On average you can expect to pay $968. The most popular route, (Spokane - Phoenix Sky Harbor Intl), can usually be booked for $215.

  • 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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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 March 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$79Average$209FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$85Average$187FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$156Average$365FlexibilityNo cancel feeOn-time75%
DeltaCheapest$161Average$439FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$168Average$301FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$187Average$414FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$208Average$515FlexibilityNo cancel feeOn-time69%
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