$56 Find Cheap Flights from Phoenix Sky Harbor Airport to Idaho

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sky Harbor Intl to Idaho departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to Idaho.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to Idaho.
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Cheap Flights from Sky Harbor Intl to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boisenonstop$143
Idaho Falls
Idaho Falls1 stop$282
Hailey
Hailey1 stop$291
Twin Falls
Twin Falls1 stop$737
Spokane
Spokane1 stop$176
Boise
Boisenonstop$143
Idaho Falls
Idaho Falls1 stop$282
Hailey
Hailey1 stop$291
Twin Falls
Twin Falls1 stop$737
Spokane
Spokane1 stop$176

Book Cheap Sky Harbor Intl to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sky Harbor Intl to Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sky Harbor Intl to Idaho

Thu, Nov 13 - Sun, Nov 16
Alaska Airlines Logo
8:57 pm - 11:09 pmPHX-BOI
2h 12mnonstop
Alaska Airlines Logo
6:09 pm - 8:15 pmBOI-PHX
2h 06mnonstop
$143Alaska Airlines
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Sat, Feb 21 - Sat, Feb 21
Alaska Airlines Logo
11:45 am - 1:49 pmPHX-BOI
2h 04mnonstop
Alaska Airlines Logo
5:00 pm - 7:15 pmBOI-PHX
2h 15mnonstop
$151Alaska Airlines
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Fri, Oct 31 - Sun, Nov 2
American Airlines Logo
4:20 pm - 7:37 pmPHX-BOI
2h 17mnonstop
American Airlines Logo
5:37 am - 8:05 amBOI-PHX
2h 28mnonstop
$160American Airlines
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Fri, Oct 17 - Tue, Oct 21
American Airlines Logo
8:20 pm - 11:32 pmPHX-BOI
2h 12mnonstop
American Airlines Logo
4:40 pm - 5:54 pmBOI-PHX
2h 14mnonstop
$162American Airlines
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Fri, Nov 7 - Mon, Nov 10
Southwest Logo
8:40 am - 10:55 amPHX-BOI
2h 15mnonstop
Southwest Logo
4:00 pm - 10:40 pmBOI-PHX
6h 40m2 stops
$172Southwest
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Fri, Oct 17 - Sun, Oct 19
Delta Logo
7:04 pm - 11:59 pmPHX-BOI
3h 55m1 stop
Delta Logo
5:25 am - 10:06 amBOI-PHX
5h 41m1 stop
$177Delta
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Fri, Nov 14 - Tue, Nov 18
Hawaiian Airlines Logo
8:57 pm - 11:09 pmPHX-BOI
2h 12mnonstop
Hawaiian Airlines Logo
7:35 am - 9:49 amBOI-PHX
2h 14mnonstop
$179Hawaiian Airlines
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Fri, Nov 14 - Tue, Nov 18
Southwest Logo
5:40 pm - 11:45 pmPHX-BOI
6h 05m1 stop
Southwest Logo
5:15 am - 11:25 amBOI-PHX
6h 10m2 stops
$182Southwest
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Mon, Oct 27 - Thu, Oct 30
Hawaiian Airlines Logo
9:31 am - 12:54 pmPHX-BOI
2h 23mnonstop
Hawaiian Airlines Logo
6:09 pm - 7:15 pmBOI-PHX
2h 06mnonstop
$187Hawaiian Airlines
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Fri, Jan 16 - Tue, Jan 20
Delta Logo
2:50 pm - 8:13 pmPHX-BOI
5h 23m1 stop
Delta Logo
5:40 am - 2:01 pmBOI-PHX
8h 21m1 stop
$199Delta
Find Deal
Booking Insights

KAYAK's insights & trends for Sky Harbor Intl to Idaho flights

Get data-powered insights and trends into flights from Sky Harbor Intl to Idaho to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Phoenix Sky Harbor Intl Airport to Idaho flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Idaho from Phoenix Sky Harbor Intl Airport found in the last 72 hours was to Boise, at $137 round-trip. The most popular route is from Phoenix Sky Harbor Intl Airport (PHX) to Boise (BOI), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $137.

Can I save money by flying with a layover from Phoenix Sky Harbor Intl Airport to Idaho?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $421, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Phoenix Sky Harbor Intl Airport to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Phoenix Sky Harbor Intl Airport to Idaho is September, when tickets cost $197 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is $307 and $295 respectively.

What’s the cheapest day of the week to fly from Phoenix Sky Harbor Airport to Idaho?

The average price of all round-trip flights from Phoenix Sky Harbor Intl Airport to Idaho clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Phoenix Sky Harbor Airport to Idaho, look for departures on Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Idaho, Thursday is the cheapest day to fly and Sunday is the most expensive.

How far in advance should I book a flight from Phoenix Sky Harbor Intl Airport to Idaho?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Phoenix Sky Harbor Intl Airport to Idaho, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Phoenix Sky Harbor Intl Airport to Idaho, you should book around 3 weeks before departure, which saves you about 45% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$56
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Phoenix Sky Harbor Airport to Spokane

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Phoenix Sky Harbor Airport to Idaho?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Phoenix Sky Harbor Airport to Idaho.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Phoenix Sky Harbor Airport to Idaho?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Phoenix Sky Harbor Airport to Idaho is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Phoenix Sky Harbor Airport to Idaho?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Phoenix Sky Harbor Airport to Idaho with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Phoenix Sky Harbor Airport to Idaho?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Phoenix Sky Harbor Airport to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Idaho?

    The cheapest time of day to fly to Idaho is generally in the evening, when round-trip flights cost $202 on average. Morning departures are around 29% more expensive than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $280.

Reviews of the top 5 airlines serving from Sky Harbor Intl to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Phoenix to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sky Harbor Intl to Idaho? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
7.8Comfort
7.0Entertainment
8.1Boarding
8.5Crew
Airline reviews

Flight was switched to a different airline. Caused scheduling issues. Flight delayed an hour, but arrived only 20 minutes late thanks to tail winds.

6.0 GoodAnonymous, Aug 2025PHX - RDM
Read more Alaska Airlines reviews

Flight was switched to a different airline. Caused scheduling issues. Flight delayed an hour, but arrived only 20 minutes late thanks to tail winds.

Flight was delayed leaving Phoenix. Arrived in Seattle, sat on taxi way for 30 minutes. No reasons given for delayed flight or sitting on taxiway for a long time. Alaska quality has been declining.

They were friendly, efficient and got our bags to us so fast at the end of the flight.

Both flights were delayed due to an incident at SEA. The problem really rests with inadequate customer & plane facilities for Skywest at SEA. You feel like you are in a cattle enclosure. And planes were sitting on taxiways waiting for parking so every plane was late. SEA appears to be over capacity. It is not a fun passenger experience waiting. But crews and flights were all fine. Alaska needs to step up.

In GEG I arrived at 0930 for a 1600 flight. Alaska had a rule that you could not check your bags until 4 hours before flight time. I was forced to sit in a chilly lobby for hours. I had access to a bathroom, but could not go into terminal for food and drink. Boarding and flight OK

PAID First class. No use of lounge in Phoenix (should have a code share). Bags checked and not marked first class, asked attendant who stated on mark gold members. Last bag out of carousel. When you pay extra, expect that...wifi was rebooted and not functioning to allow internet access. Food and cree were very good.

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

For longer trips, snacks are puny, boring and don’t have ANY nutritional value.

Flight was smooth, but the overhead bins were not deep enough to stow bags vertically and we ran out of room - even with 8 passengers voluntarily gate-checking their bags.

Amazing. They work with my disabilities with such kindness, attention, wnd diligence. They make it easy for those of us who need a little more extra care.

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

They we able to seat my companion and I next to each other. Plane’s temperature was very cool. Willl be more prepared on return trip.

All was good and they were able to seat my travel companion next to me. Thank you.

Like the ample leg room. May as well not bother with snacks if it's only a two ounce bag of pretzels. Didn't use the entertainment option. Was there one?

What an amazing flight. I haven’t experienced this level of service in a flight in years. This will be the only way to fly to Hawaii for me in the future.

Kayak sold me a ticket after check in time. Could not check in. Could not get on flight.

Love you guys are so friendly and kind and wonderful

Agents talk too fast over intercom. I know it’s memorized and we’ve all heard it before. Just slow down a little. Stop charging for checked bags. I was pleased to get my bags promptly at each end of my flight.

Everything was great except having to check in at Alaska. That was a surprise and took extra time and effort. Should have been explained somewhere maybe on the HA electronic ticket.

It was clean and the crew was great. I wish the chairs could recline just a little more and you would provide small pillows for people with bad backs. My back is fused and a little support would be great.

I accidentally made this purchase and they wouldn’t refund me even though I called immediately to cancel it.

Ring in first class for an overnight flight, there was no blankets nor pillows for first class customers.

I didn't like that my paid for seat was changed 2 hours before my flight.

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Wonderful crew and early arrival to our destination. It was so nice to have free wifi access and movies too. Thank you!

Bigger seats. Board back to front! Disembark front to back!

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

Service in first class no longer exists on American Airlines .

My seat was very worn. Otherwise I had an excellent flight

Everything you need to know for your flight from Sky Harbor Intl to Idaho

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