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$20+ 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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
dic. 13 — dic. 201
sáb. 12/13
sáb. 12/20
1 adult, Economy
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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 noviembre 13, 2025.

This Frontier deal was found by Cheapflights users on 11/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/282:02 pmPHX - GEG
Nonstop2h 51mFrontier
dom. 1/44:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 11/11$50
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/302:02 pmPHX - GEG
Nonstop2h 51mFrontier
jue. 1/14:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 11/12$60
This Orbitz deal was found by Cheapflights users on 11/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/252:02 pmPHX - GEG
Nonstop2h 51mFrontier
jue. 1/14:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 11/10$101
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/177:56 pmPHX - GEG
1 stop5h 03mMultiple Airlines
dom. 1/44:48 pmGEG - PHX
Nonstop3h 04mMultiple Airlines
Deal found 11/12$118
This Frontier deal was found by Cheapflights users on 11/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/182:02 pmPHX - GEG
Nonstop2h 51mFrontier
mar. 12/304:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 11/12$120
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/2710:31 pmPHX - GEG
1 stop13h 36mFrontier
sáb. 1/312:02 pmGEG - PHX
1 stop11h 42mFrontier
Deal found 11/12$129
This Frontier deal was found by Cheapflights users on 11/13. 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.
mar. 12/232:02 pmPHX - GEG
Nonstop2h 51mFrontier
jue. 1/14:48 pmGEG - PHX
Nonstop3h 04mFrontier
Deal found 11/13$134
This Cheapflightsfares deal was found by Cheapflights users on 11/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/128:59 pmPHX - BOI
Nonstop2h 16mAlaska Airlines
dom. 1/1112:21 pmBOI - PHX
Nonstop2h 08mAlaska Airlines
Deal found 11/11$154
This Expedia deal was found by Cheapflights users on 11/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/257:00 amPHX - BOI
1 stop4h 53mMultiple Airlines
mar. 12/27:35 amBOI - PHX
Nonstop2h 31mMultiple Airlines
Deal found 11/11$156
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/58:59 pmPHX - BOI
Nonstop2h 16mAlaska Airlines
lun. 12/86:07 pmBOI - PHX
Nonstop2h 10mAlaska Airlines
Deal found 11/12$157
This American Airlines deal was found by Cheapflights users on 11/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/49:20 pmPHX - BOI
Nonstop2h 19mAmerican Airlines
sáb. 12/62:09 pmBOI - PHX
Nonstop2h 21mAmerican Airlines
Deal found 11/11$162
This American Airlines deal was found by Cheapflights users on 11/12. 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.
mié. 12/1011:04 amPHX - BOI
Nonstop2h 34mAmerican Airlines
mié. 12/172:09 pmBOI - PHX
Nonstop2h 21mAmerican Airlines
Deal found 11/12$163

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 noviembre 13, 2025.

Round-trip from

$50
(Frontier)

One-way from

$20
(Frontier)

Popular in

December

Cheapest in

September

Average price

$272
From Phoenix to Idaho
Search Deals
One-way flight from Phoenix to Idaho
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 noviembre 13, 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

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

mar. 12/23

2:02 pm-3:53 pm

Nonstop2h 51m

Spokane

jue. 1/1

4:48 pm-8:52 pm

Nonstop3h 04m

$134

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

jue. 12/11

7:00 am-11:13 am

1 stop5h 13m

Spokane

jue. 12/18

4:48 pm-8:52 pm

Nonstop3h 04m

$145

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

vie. 1/16

3:11 pm-5:29 pm

Nonstop2h 18m

Boise Air Term. Gowen Fld

mar. 1/20

12:21 pm-2:29 pm

Nonstop2h 08m

$155

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

vie. 12/5

7:00 am-11:49 am

1 stop4h 49m

Boise Air Term. Gowen Fld

lun. 12/8

1:25 pm-9:25 pm

1 stop8h 00m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

jue. 12/4

10:48 am-1:12 pm

Nonstop2h 24m

Boise Air Term. Gowen Fld

dom. 12/7

6:07 pm-8:17 pm

Nonstop2h 10m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

jue. 2/5

3:11 pm-5:29 pm

Nonstop2h 18m

Boise Air Term. Gowen Fld

jue. 2/12

12:54 pm-12:33 am

1 stop11h 39m

$160

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

mar. 2/3

2:40 pm-4:50 pm

Nonstop2h 10m

Boise Air Term. Gowen Fld

lun. 2/9

3:55 pm-8:30 pm

1 stop4h 35m

$163

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

vie. 1/16

6:40 am-11:50 am

1 stop5h 10m

Boise Air Term. Gowen Fld

lun. 1/26

6:40 am-9:00 am

Nonstop2h 20m

$163

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

mar. 2/3

3:11 pm-5:29 pm

Nonstop2h 18m

Boise Air Term. Gowen Fld

jue. 2/5

4:04 pm-11:55 pm

1 stop7h 51m

$163

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

mar. 1/6

7:00 am-3:22 pm

1 stop8h 22m

Boise Air Term. Gowen Fld

dom. 1/11

12:21 pm-2:29 pm

Nonstop2h 08m

$163

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 60 results
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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, May is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $93). Flying from Phoenix to Idaho in December is currently the most expensive (average of $162). 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 noviembre 13, 2025.

It’s typically best to fly out from Phoenix to Idaho in the evening. Doing so could potentially save you 18% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Phoenix to Idaho. Price data was last updated on November 2, 2025.

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

Weekly flight availability from Phoenix to Idaho

Explore weekly flight availability from Phoenix to Idaho. 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 noviembre 13, 2025.

The most flights from PH1 to USID are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

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 noviembre 13, 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
11,282 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,282 reviews
Alaska Airlines
8.0
Very good
11,282 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
7.9
Good
4,238 reviews
Alaska Airlines
8.0
Very good
11,282 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,282 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,282 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Allegiant Air
7.2
Good
698 reviews
Alaska Airlines
8.0
Very good
11,282 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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.

  • How long is the flight from Phoenix to Idaho?

    Frontier, Alaska Airlines, and Southwest can get you from Phoenix to Idaho in just under 2h 10m. Your travel time will be generally consistent. The distance from Phoenix to Idaho is about 736 mi. Generally, flights for this route are nonstop.

  • 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 $54. Users have also found prices from $55 and $77 on Frontier and Southwest, 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 Porter Airlines (100%), American Airlines (85%) or SkyWest Airlines (84%) 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 $232, 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 $118 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, May is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $93). Flying from Phoenix to Idaho in December is currently the most expensive (average of $162). 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.

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Alternative routes for Phoenix to Idaho

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Top 7 airlines flying from Phoenix to Idaho

Discover the top 7 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 noviembre 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$56Average$168FlexibilityNo cancel feeOn-time88%
DeltaCheapest$88Average$417FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$136Average$206FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$146Average$250FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$148Average$259FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$157Average$368FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$247Average$424FlexibilityNo cancel feeOn-time69%

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