Idaho

$82+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Apr 22 — Apr 291
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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 March 23, 2026.

This Trip.com deal was found by Cheapflights users on 3/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:50 pm
PHX
-
GEG
1 stop21h 59m
Frontier
Sun 5/311:44 am
GEG
-
PHX
1 stop19h 52m
Frontier
Deal found 3/21$176
This Southwest deal was found by Cheapflights users on 3/22. 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 4/148:25 pm
PHX
-
BOI
Nonstop2h 05m
Southwest
Wed 4/1511:35 am
BOI
-
PHX
1 stop9h 10m
Southwest
Deal found 3/22$182
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 5/79:42 am
PHX
-
GEG
1 stop10h 47m
Multiple Airlines
Sun 5/109:19 pm
GEG
-
PHX
1 stop11h 28m
Multiple Airlines
Deal found 3/21$182
This CheapOair deal was found by Cheapflights users on 3/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:53 pm
PHX
-
BOI
1 stop16h 37m
Frontier
Tue 6/21:25 pm
BOI
-
PHX
1 stop26h 58m
Frontier
Deal found 3/20$191
This Expedia deal was found by Cheapflights users on 3/21. 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 4/178:40 pm
PHX
-
BOI
Nonstop2h 18m
Multiple Airlines
Sun 4/1911:53 am
BOI
-
PHX
1 stop20h 43m
Multiple Airlines
Deal found 3/21$194
This Frontier deal was found by Cheapflights users on 3/20. 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 6/45:15 am
PHX
-
BOI
1 stop6h 15m
Frontier
Tue 6/91:04 pm
BOI
-
PHX
1 stop11h 30m
Frontier
Deal found 3/20$201
This Expedia deal was found by Cheapflights users on 3/18. 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.
Tue 4/148:40 pm
PHX
-
BOI
Nonstop2h 18m
Multiple Airlines
Tue 5/51:22 pm
BOI
-
PHX
1 stop27h 01m
Multiple Airlines
Deal found 3/18$204
This Expedia deal was found by Cheapflights users on 3/22. 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 5/75:15 am
PHX
-
BOI
1 stop6h 12m
Frontier
Tue 5/121:22 pm
BOI
-
PHX
1 stop11h 09m
Frontier
Deal found 3/22$205
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/239:00 am
PHX
-
GEG
1 stop11h 29m
Multiple Airlines
Sun 4/269:19 pm
GEG
-
PHX
1 stop23h 33m
Multiple Airlines
Deal found 3/18$205
This CheapOair deal was found by Cheapflights users on 3/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:29 pm
PHX
-
BOI
1 stop19h 01m
Frontier
Tue 6/91:04 pm
BOI
-
PHX
1 stop11h 30m
Frontier
Deal found 3/22$212
This CheapOair deal was found by Cheapflights users on 3/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:53 pm
PHX
-
BOI
1 stop16h 37m
Frontier
Sun 5/241:25 pm
BOI
-
PHX
1 stop19h 19m
Frontier
Deal found 3/19$216
This Trip.com deal was found by Cheapflights users on 3/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:53 pm
PHX
-
GEG
1 stop16h 45m
Frontier
Mon 5/1112:33 pm
GEG
-
PHX
1 stop10h 58m
Frontier
Deal found 3/20$217

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 March 23, 2026.

Round-trip from

$176
(Trip.com)

One-way from

$82
(CheapOair)

Popular in

December

Cheapest in

January

Average price

$318

Good round-trip deal

$247 or less

Good one-way deal

$175 or less
From Phoenix Sky Harbor Intl to Idaho
One-way flight from Phoenix Sky Harbor Intl to Idaho
Highest demand for flights based on searches. 3% potential increase in price ($7 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in March 2026
Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Idaho.
Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Idaho.

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 March 23, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 4/18

7:00 pm-10:05 pm

Nonstop2h 05m

Boise Air Term. Gowen Fld

Sat 4/25

7:05 am-8:10 am

Nonstop2h 05m

$217

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 4/30

9:55 pm-1:00 am

Nonstop2h 05m

Boise Air Term. Gowen Fld

Mon 5/4

7:55 pm-9:00 pm

Nonstop2h 05m

$229

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 4/14

6:40 am-3:03 pm

1 stop7h 23m

Boise Air Term. Gowen Fld

Tue 4/21

6:16 pm-11:38 pm

1 stop6h 22m

$237

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 5/12

5:16 pm-12:04 am

1 stop5h 48m

Boise Air Term. Gowen Fld

Sat 5/16

6:00 am-8:28 am

1 stop3h 28m

$237

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 5/15

9:55 pm-1:00 am

Nonstop2h 05m

Boise Air Term. Gowen Fld

Mon 5/18

7:55 pm-9:00 pm

Nonstop2h 05m

$237

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 5/1

9:55 pm-1:00 am

Nonstop2h 05m

Boise Air Term. Gowen Fld

Mon 5/4

2:15 pm-5:45 pm

1 stop4h 30m

$243

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 4/17

8:40 pm-11:58 pm

Nonstop2h 18m

Boise Air Term. Gowen Fld

Mon 4/20

6:00 am-12:52 pm

1 stop7h 52m

$247

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Fri 4/17

4:40 pm-11:00 pm

1 stop5h 20m

Boise Air Term. Gowen Fld

Mon 4/20

3:44 pm-11:18 pm

1 stop8h 34m

$257

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Wed 5/20

6:25 am-12:13 pm

1 stop5h 48m

Spokane

Tue 5/26

9:30 am-4:37 pm

1 stop7h 07m

$257

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 4/15

7:00 am-11:47 pm

1 stop15h 47m

Boise Air Term. Gowen Fld

Sat 4/18

8:04 pm-11:27 pm

1 stop4h 23m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6

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 March is currently the most expensive (average of $180). 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 March 23, 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 5% 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 March 14, 2026.

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

Weekly flight availability from Phoenix Sky Harbor Intl Airport to Idaho

Explore weekly flight availability from Sky Harbor Intl 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 March 23, 2026.

The most flights from PHX to USID are scheduled on a Friday (10 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 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 March 23, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta 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.

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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, Delta, and Alaska Airlines fly from Phoenix Sky Harbor Intl Airport to Idaho in about 2h 05m. The time it takes to get you to your destination can typically vary by up to 19h 01m. 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 Delta. You may also be able to find cheap deals on Alaska Airlines and Southwest, with prices starting from $78 and $78, respectively.

  • What are the most popular routes 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 (86%), American Airlines (82%) and Hawaiian Airlines (80%).

  • 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 $66. On average you can expect to pay $282. The most popular route, (Phoenix Sky Harbor Intl - Spokane), can usually be booked for $205.

  • 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 March is currently the most expensive (average of $180). 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

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Sky Harbor Intl to Idaho

Discover the top 6 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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$81Average$409FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$124Average$207FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$137Average$237FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$151Average$253FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$156Average$356FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$290Average$445FlexibilityNo cancel feeOn-time69%

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