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Idaho

$61+ 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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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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 January 15, 2026.

Round-trip from

$96
(Booking.com)

One-way from

$61
(Super.com)

Popular in

December

Cheapest in

January

Average price

$190
From Phoenix to Idaho
Search Deals
One-way flight from Phoenix to Idaho
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 15, 2026.

This Booking.com deal was found by Cheapflights users on 1/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/272:35 pm
AZA
-
BOI
Nonstop2h 12m
Allegiant Air
Mon 3/25:37 pm
BOI
-
AZA
Nonstop2h 16m
Allegiant Air
Deal found 1/14$96
This Booking.com deal was found by Cheapflights users on 1/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/132:38 pm
AZA
-
BOI
Nonstop2h 13m
Allegiant Air
Mon 2/165:41 pm
BOI
-
AZA
Nonstop2h 17m
Allegiant Air
Deal found 1/14$108
This Booking.com deal was found by Cheapflights users on 1/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/237:00 am
AZA
-
BOI
Nonstop2h 20m
Allegiant Air
Mon 1/2610:10 am
BOI
-
AZA
Nonstop2h 16m
Allegiant Air
Deal found 1/13$112
This Booking.com deal was found by Cheapflights users on 1/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/197:00 am
AZA
-
BOI
Nonstop2h 20m
Allegiant Air
Mon 1/2610:10 am
BOI
-
AZA
Nonstop2h 16m
Allegiant Air
Deal found 1/14$138
This Kiwi.com deal was found by Cheapflights users on 1/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1210:51 pm
PHX
-
BOI
1 stop12h 20m
Frontier
Thu 2/1912:36 pm
BOI
-
PHX
2 stops34h 17m
Frontier
Deal found 1/13$143
This Southwest deal was found by Cheapflights users on 1/14. 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 2/148:55 am
PHX
-
BOI
Nonstop2h 10m
Southwest
Tue 2/176:00 am
BOI
-
PHX
Nonstop2h 15m
Southwest
Deal found 1/14$157
This Expedia deal was found by Cheapflights users on 1/12. 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.
Wed 2/43:11 pm
PHX
-
BOI
Nonstop2h 18m
Multiple Airlines
Thu 2/1912:36 pm
BOI
-
PHX
1 stop19h 06m
Multiple Airlines
Deal found 1/12$159
This Kiwi.com deal was found by Cheapflights users on 1/15. 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.
Thu 2/196:00 am
PHX
-
GEG
1 stop6h 27m
Multiple Airlines
Sun 2/229:17 pm
GEG
-
PHX
1 stop10h 53m
Multiple Airlines
Deal found 1/15$161
This Expedia deal was found by Cheapflights users on 1/12. 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.
Sat 2/73:11 pm
PHX
-
BOI
Nonstop2h 18m
Alaska Airlines
Sun 2/812:21 pm
BOI
-
PHX
Nonstop2h 08m
Alaska Airlines
Deal found 1/12$167
This Mytrip deal was found by Cheapflights users on 1/14. 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 1/167:00 am
AZA
-
BOI
Nonstop2h 20m
Allegiant Air
Mon 1/1910:10 am
BOI
-
AZA
Nonstop2h 16m
Allegiant Air
Deal found 1/14$172
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Sat 2/79:42 am
PHX
-
BOI
Nonstop2h 25m
American Airlines
Mon 2/92:48 pm
BOI
-
PHX
Nonstop2h 14m
American Airlines
Deal found 1/14$173
This Expedia deal was found by Cheapflights users on 1/15. 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.
Fri 2/63:11 pm
PHX
-
BOI
Nonstop2h 18m
Multiple Airlines
Mon 2/912:07 pm
BOI
-
PHX
1 stop12h 33m
Multiple Airlines
Deal found 1/15$174

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 January 15, 2026.
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

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Fri 2/13

2:38 pm-4:51 pm

Nonstop2h 13m

Boise Air Term. Gowen Fld

Mon 2/16

5:41 pm-7:58 pm

Nonstop2h 17m

$108

PhoenixBoise

AZA - BOI

AZABOI

Phoenix-Mesa Gateway

Fri 2/6

11:07 am-1:27 pm

Nonstop2h 20m

Boise Air Term. Gowen Fld

Mon 2/9

10:10 am-12:26 pm

Nonstop2h 16m

$108

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 2/28

8:55 am-11:05 am

Nonstop2h 10m

Boise Air Term. Gowen Fld

Sat 2/28

3:00 pm-5:05 pm

Nonstop2h 05m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 2/14

8:55 am-11:05 am

Nonstop2h 10m

Boise Air Term. Gowen Fld

Tue 2/17

6:00 am-8:15 am

Nonstop2h 15m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 2/14

8:55 am-11:05 am

Nonstop2h 10m

Boise Air Term. Gowen Fld

Sat 2/21

10:55 am-8:00 pm

1 stop9h 05m

$173

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 3/5

6:00 am-11:27 am

1 stop6h 27m

Spokane

Sun 3/8

11:32 am-8:14 pm

1 stop8h 42m

$174

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 2/13

7:52 pm-10:09 pm

Nonstop2h 17m

Boise Air Term. Gowen Fld

Sun 2/15

7:15 am-9:37 am

Nonstop2h 22m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 2/10

12:05 pm-8:12 pm

1 stop8h 07m

Boise Air Term. Gowen Fld

Tue 2/17

6:35 pm-12:42 am

1 stop6h 07m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Mon 3/2

7:35 am-11:50 am

1 stop4h 15m

Boise Air Term. Gowen Fld

Sat 3/7

5:15 am-7:30 am

Nonstop2h 15m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 2/10

7:00 am-12:25 pm

1 stop5h 25m

Boise Air Term. Gowen Fld

Tue 2/17

6:00 am-8:15 am

Nonstop2h 15m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

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, October is the cheapest month in which you can book a flight from Phoenix to Idaho (average of $84). Flying from Phoenix to Idaho in December is currently the most expensive (average of $165). 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 January 15, 2026.

It’s typically best to fly out from Phoenix to Idaho in the morning. Doing so could potentially save you 33% on the flight price compared to flying in the evening, 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 January 10, 2026.

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 January 15, 2026.

The most flights from PH1 to USID are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 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 January 15, 2026.
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
11,715 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,715 reviews
Alaska Airlines
8.0
Very good
11,715 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,258 reviews
Alaska Airlines
8.0
Very good
11,715 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,049 reviews
Alaska Airlines
8.0
Very good
11,715 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,131 reviews
Alaska Airlines
8.0
Very good
11,715 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Allegiant Air
7.2
Good
702 reviews
Alaska Airlines
8.0
Very good
11,715 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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?

    Allegiant Air, Southwest, and Frontier can get you from Phoenix to Idaho in just under 2h 10m. Your travel time can differ by up to 4h 17m. The distance from Phoenix to Idaho 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 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 $44. Users have also found prices from $78 and $78 on Alaska Airlines 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 American Airlines (89%), Envoy Air (89%) or SkyWest Airlines (86%) 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 $210, 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 $178 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 $84). Flying from Phoenix to Idaho in December is currently the most expensive (average of $165). 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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See prices for flight routes from nearby airports that may be better suited for you.
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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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$50Average$157FlexibilityNo cancel feeOn-time88%
DeltaCheapest$81Average$414FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$136Average$197FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$142Average$244FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$147Average$258FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$155Average$362FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$247Average$430FlexibilityNo cancel feeOn-time69%

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