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$66+ Cheap flights from Sky Harbor Intl (PHX) 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Sky Harbor Intl to Idaho

Cheapest flights from Sky Harbor Intl to Idaho
Explore the most affordable flight options available from Sky Harbor Intl to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/266:00 am
PHX
-
BOI
1 stop5h 51m
Frontier
Sun 3/111:56 am
BOI
-
PHX
1 stop9h 45m
Frontier
Deal found 1/27$147
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Sat 2/2110:51 pm
PHX
-
BOI
1 stop12h 20m
Frontier
Fri 2/2711:56 am
BOI
-
PHX
1 stop20h 16m
Frontier
Deal found 1/28$148
This Southwest deal was found by Cheapflights users on 1/28. 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.
Wed 2/259:00 am
PHX
-
BOI
Nonstop2h 10m
Southwest
Wed 3/46:40 am
BOI
-
PHX
Nonstop2h 20m
Southwest
Deal found 1/28$157
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/129:30 am
PHX
-
GEG
1 stop12h 02m
Multiple Airlines
Sun 2/159:17 pm
GEG
-
PHX
1 stop10h 53m
Multiple Airlines
Deal found 1/27$160
This Expedia deal was found by Cheapflights users on 1/28. 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.
Thu 2/266:00 am
PHX
-
BOI
1 stop5h 51m
Multiple Airlines
Sun 3/112:57 pm
BOI
-
PHX
Nonstop2h 11m
Multiple Airlines
Deal found 1/28$163
This Kiwi.com deal was found by Cheapflights users on 1/28. 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
-
BOI
1 stop5h 51m
Frontier
Fri 2/2711:56 am
BOI
-
PHX
1 stop20h 16m
Frontier
Deal found 1/28$170
This Expedia deal was found by Cheapflights users on 1/27. 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.
Thu 2/266:00 am
PHX
-
GEG
1 stop6h 27m
Frontier
Thu 3/512:22 pm
GEG
-
PHX
1 stop11h 19m
Frontier
Deal found 1/27$173
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 2/267:52 pm
PHX
-
BOI
Nonstop2h 17m
Alaska Airlines
Mon 3/27:15 am
BOI
-
PHX
Nonstop2h 22m
Alaska Airlines
Deal found 1/28$177
This Frontier deal was found by Cheapflights users on 1/28. 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.
Thu 2/266:00 am
PHX
-
GEG
1 stop6h 27m
Frontier
Sun 3/18:12 pm
GEG
-
PHX
Nonstop2h 47m
Frontier
Deal found 1/28$179
This Southwest deal was found by Cheapflights users on 1/27. 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 2/268:20 am
PHX
-
BOI
1 stop5h 55m
Southwest
Sun 3/15:25 am
BOI
-
PHX
Nonstop2h 15m
Southwest
Deal found 1/27$187
This Frontier deal was found by Cheapflights users on 1/27. 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.
Thu 2/196:00 am
PHX
-
BOI
1 stop5h 51m
Frontier
Sun 2/2211:56 am
BOI
-
PHX
1 stop6h 35m
Frontier
Deal found 1/27$189
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Fri 2/203:58 pm
PHX
-
IDA
1 stop5h 43m
Multiple Airlines
Mon 2/2310:31 pm
IDA
-
PHX
1 stop15h 24m
Multiple Airlines
Deal found 1/27$204

Find flight deals from Sky Harbor Intl to Idaho

Keep the following information in mind while searching for Sky Harbor Intl to Idaho flight deals. Data was last updated January 29, 2026.

Round-trip from

$147
(Kiwi.com)

One-way from

$66
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$196

Good round-trip deal

$177 or less

Good one-way deal

$123 or less
From Phoenix Sky Harbor Intl to Idaho
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Idaho
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Idaho.
Search Deals
Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Idaho.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl 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 29, 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Idaho that are best for you.

Fly from

Sky Harbor Intl

Fly to

Idaho

Route

Depart

Return

Price

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 2/25

9:00 am-11:10 am

Nonstop2h 10m

Boise Air Term. Gowen Fld

Wed 3/4

6:40 am-9:00 am

Nonstop2h 20m

$157

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 3/13

5:00 am-11:40 am

1 stop5h 40m

Boise Air Term. Gowen Fld

Wed 3/25

6:48 pm-7:58 pm

Nonstop2h 10m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 2/24

6:00 am-10:40 am

1 stop4h 40m

Boise Air Term. Gowen Fld

Tue 3/3

4:00 pm-10:20 pm

1 stop6h 20m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 3/27

10:50 pm-1:55 am

Nonstop2h 05m

Boise Air Term. Gowen Fld

Mon 3/30

5:25 am-6:35 am

Nonstop2h 10m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 3/7

12:01 pm-8:15 pm

1 stop8h 14m

Boise Air Term. Gowen Fld

Mon 3/16

7:30 pm-11:58 pm

1 stop5h 28m

$187

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 5/1

3:50 pm-12:17 am

1 stop7h 27m

Boise Air Term. Gowen Fld

Sat 5/2

7:24 am-2:43 pm

1 stop8h 19m

$187

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 5/2

11:45 am-9:24 pm

1 stop8h 39m

Boise Air Term. Gowen Fld

Sun 5/3

8:00 am-12:07 pm

1 stop5h 07m

$187

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Thu 2/26

8:00 am-9:55 am

Nonstop2h 55m

Spokane

Sun 3/1

8:12 pm-11:59 pm

Nonstop2h 47m

$195

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Fri 2/20

3:58 pm-9:41 pm

1 stop5h 43m

Idaho Falls Fanning Field

Mon 2/23

10:31 pm-1:55 pm

1 stop15h 24m

$204

PhoenixHailey

PHX - SUN

PHXSUN

Phoenix Sky Harbor Intl

Tue 3/24

6:00 am-1:44 pm

1 stop6h 44m

Hailey Sun Valley-Friedman

Wed 3/25

1:29 pm-5:59 pm

1 stop5h 30m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 60 results
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Best time to book a flight from Sky Harbor Intl to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Sky Harbor Intl 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 Sky Harbor Intl Airport to Idaho

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Idaho?

Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Idaho (average of $115). Flying from Phoenix Sky Harbor Intl Airport to Idaho in May is currently the most expensive (average of $177). 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 Sky Harbor Intl 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 29, 2026.

It’s typically best to fly out from Phoenix Sky Harbor Intl Airport to Idaho in the morning. Doing so could potentially save you 16% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Idaho?

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Idaho. Price data was last updated on January 24, 2026.

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Idaho flight should consider departing on Friday 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.

How much does it cost to fly round-trip from Phoenix Sky Harbor Intl Airport to Idaho?

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 29, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Phoenix Sky Harbor Intl Airport to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,807 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

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
11,807 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

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
4,267 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

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
8,127 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

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
Hawaiian Airlines
7.8
Good
2,830 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

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
11,206 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

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 Sky Harbor Intl 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 Sky Harbor Intl Airport to Idaho?

    Airlines like Southwest, Alaska Airlines, and Frontier fly from Phoenix Sky Harbor Intl Airport to Idaho in about 2h 10m. The time it takes to get you to your destination can typically vary by up to 3h 30m. The distance from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport to Idaho one-way?

    $78 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $78 and $78, respectively.

  • What are the most popular routes from Phoenix Sky Harbor Intl Airport to Idaho?

    Most travelers choose Phoenix Sky Harbor Intl - Boise Air Term. Gowen Fld, Phoenix Sky Harbor Intl - Spokane or Phoenix Sky Harbor Intl - Jackson Hole when deciding on the best route from Phoenix Sky Harbor Intl Airport to Idaho.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Idaho?

    The top 3 most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Idaho are SkyWest Airlines (90%), Envoy Air (87%) and American Airlines (86%).

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Idaho?

    The cheapest flight price from Phoenix Sky Harbor Intl Airport to Idaho is $78. On average you can expect to pay $203. The most popular route, (Phoenix Sky Harbor Intl - Boise Air Term. Gowen Fld), can usually be booked for $145.

  • Can I find deals for flights from Sky Harbor Intl to Idaho that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Idaho.

  • Can I find deals for business class flights from Sky Harbor Intl to Idaho?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl 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 Sky Harbor Intl Airport to Idaho?

    Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Idaho (average of $115). Flying from Phoenix Sky Harbor Intl Airport to Idaho in May is currently the most expensive (average of $177). 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 Sky Harbor Intl to Idaho

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Top 7 airlines flying from Sky Harbor Intl to Idaho

Discover the top 7 airlines that operate flights from Sky Harbor Intl 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 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$50Average$110FlexibilityNo cancel feeOn-time88%
DeltaCheapest$81Average$416FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$136Average$197FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$141Average$245FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$147Average$255FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$155Average$360FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$247Average$445FlexibilityNo cancel feeOn-time69%

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