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$56+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BOI
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap 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 February 20, 2025.

Round-trip from

$157
(Alaska Airlines)

One-way from

$56
(Mytrip)

Popular in

May

Cheapest in

September

Average price

$252

Good round-trip deal

$227 or less

Good one-way deal

$158 or less
From Phoenix Sky Harbor Intl to Idaho
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One-way flight from Phoenix Sky Harbor Intl to Idaho
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Highest demand for flights based on searches. 11% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Idaho.
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Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Idaho.
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Find 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 February 20, 2025.

This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/77:59 pmPHX - BOI
Nonstop2h 16mAlaska Airlines
Tue 5/136:11 pmBOI - PHX
Nonstop2h 08mAlaska Airlines
Deal found 2/19$157
This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/147:41 pmPHX - GEG
1 stop15h 28mFrontier
Thu 6/1911:54 amGEG - PHX
1 stop6h 52mFrontier
Deal found 2/20$158
This Southwest deal was found by Cheapflights users on 2/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/138:30 amPHX - BOI
1 stop7h 15mSouthwest
Tue 5/208:40 amBOI - PHX
Nonstop2h 05mSouthwest
Deal found 2/19$177
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/63:38 pmPHX - BOI
1 stop20h 54mSpirit Airlines
Mon 3/101:31 pmBOI - PHX
1 stop24h 46mSpirit Airlines
Deal found 2/19$192
This Hawaiian Airlines deal was found by Cheapflights users on 2/19. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/87:59 pmPHX - BOI
Nonstop2h 16mHawaiian Airlines
Mon 5/1212:22 pmBOI - PHX
Nonstop2h 15mHawaiian Airlines
Deal found 2/19$197
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:15 amPHX - BOI
1 stop5h 10mUnited Airlines
Fri 5/92:00 pmBOI - PHX
1 stop5h 32mUnited Airlines
Deal found 2/20$199
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1510:04 amPHX - BOI
Nonstop2h 12mAmerican Airlines
Sat 3/225:15 pmBOI - PHX
Nonstop2h 10mAmerican Airlines
Deal found 2/20$219
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/73:08 pmPHX - GEG
1 stop6h 50mAlaska Airlines
Tue 5/137:25 amGEG - PHX
1 stop6h 12mAlaska Airlines
Deal found 2/19$220
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/281:20 pmPHX - BOI
1 stop4h 46mDelta
Mon 8/45:45 pmBOI - PHX
1 stop6h 53mDelta
Deal found 2/20$237
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/512:05 pmPHX - GEG
1 stop7h 39mDelta
Wed 3/126:56 pmGEG - PHX
1 stop4h 57mDelta
Deal found 2/19$243
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1510:55 amPHX - GEG
Nonstop2h 43mAmerican Airlines
Thu 4/246:27 amGEG - PHX
Nonstop2h 38mAmerican Airlines
Deal found 2/20$259
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/154:35 pmPHX - GEG
2 stops6h 20mSouthwest
Thu 4/2411:35 amGEG - PHX
1 stop5h 00mSouthwest
Deal found 2/20$284

Find flights from Sky Harbor Intl to Idaho within your budget

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 February 20, 2025.

Fly from

Sky Harbor Intl

Fly to

Idaho

Route

Depart

Return

Price

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Wed 5/7

7:59 pm-11:15 pm

Nonstop2h 16m

Boise Air Term. Gowen Fld

Tue 5/13

6:11 pm-7:19 pm

Nonstop2h 08m

$157

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Sat 6/14

7:41 pm-11:09 am

1 stop15h 28m

Spokane

Thu 6/19

11:54 am-6:46 pm

1 stop6h 52m

$158

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Tue 5/13

1:50 pm-10:07 pm

1 stop7h 17m

Boise Air Term. Gowen Fld

Tue 5/20

1:15 pm-4:00 pm

1 stop3h 45m

$177

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 3/6

3:38 pm-12:32 pm

1 stop20h 54m

Boise Air Term. Gowen Fld

Mon 3/10

1:31 pm-1:17 pm

1 stop24h 46m

$192

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 5/8

7:59 pm-11:15 pm

Nonstop2h 16m

Boise Air Term. Gowen Fld

Mon 5/12

12:22 pm-1:37 pm

Nonstop2h 15m

$197

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 3/6

6:15 am-11:25 am

1 stop5h 10m

Boise Air Term. Gowen Fld

Fri 5/9

2:00 pm-6:32 pm

1 stop5h 32m

$199

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Thu 4/10

5:35 am-10:55 am

1 stop4h 20m

Boise Air Term. Gowen Fld

Tue 4/15

12:30 pm-7:00 pm

2 stops7h 30m

$202

PhoenixBoise

PHX - BOI

PHXBOI

Phoenix Sky Harbor Intl

Sat 3/15

10:04 am-1:16 pm

Nonstop2h 12m

Boise Air Term. Gowen Fld

Sat 3/22

5:15 pm-6:25 pm

Nonstop2h 10m

$219

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Wed 5/7

3:08 pm-9:58 pm

1 stop6h 50m

Spokane

Tue 5/13

7:25 am-1:37 pm

1 stop6h 12m

$220

PhoenixSpokane

PHX - GEG

PHXGEG

Phoenix Sky Harbor Intl

Wed 3/5

12:05 pm-6:44 pm

1 stop7h 39m

Spokane

Wed 3/12

6:56 pm-11:53 pm

1 stop4h 57m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 57 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.

Travel insights for flights from Sky Harbor Intl to Idaho

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

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

Currently, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Idaho (average of $314). Flying from Phoenix Sky Harbor Intl Airport to Idaho in June is currently the most expensive (average of $436). 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 February 20, 2025.

When flying from Phoenix Sky Harbor Intl Airport to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 February 20, 2025.

The most flights from PHX to USID are scheduled on a Thursday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Idaho by month

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

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

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

If weather is an important factor for your trip to Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 February 20, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Phoenix to Idaho have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Idaho one-way?

    $56 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Frontier and Hawaiian Airlines, with prices starting from $75 and $79, 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 United Airlines (100%), Horizon Air (92%) and Envoy Air (90%).

  • 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 $109. On average you can expect to pay $412. The most popular route, (Phoenix Sky Harbor Intl - Boise Air Term. Gowen Fld), can usually be booked for $167.

  • 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, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Idaho (average of $314). Flying from Phoenix Sky Harbor Intl Airport to Idaho in June is currently the most expensive (average of $436). 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.
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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$78Average$134FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$92Average$165FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$152Average$368FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$166Average$349FlexibilityNo cancel feeOn-time71%
DeltaCheapest$168Average$458FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$174Average$250FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$252Average$489FlexibilityNo cancel feeOn-time69%
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