$20 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 12/25. 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, 0 bags

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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$155
Idaho Falls
Idaho Falls2 stops$247
Hailey
Hailey1 stop$219
Twin Falls
Twin Falls1 stop$436
Pocatello
Pocatello1 stop$387
Spokane
Spokanenonstop$40
Boise
Boisenonstop$155
Idaho Falls
Idaho Falls2 stops$247
Hailey
Hailey1 stop$219
Twin Falls
Twin Falls1 stop$436
Pocatello
Pocatello1 stop$387
Spokane
Spokanenonstop$40

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

Tue, Dec 23 - Sun, Dec 28
Frontier Logo
2:02 pm - 3:53 pmPHX-GEG
2h 51mnonstop
Frontier Logo
4:48 pm - 8:52 pmGEG-PHX
3h 04mnonstop
$40Frontier
Find Deal
Thu, Feb 19 - Sun, Mar 1
Frontier Logo
4:46 pm - 6:37 pmPHX-GEG
2h 51mnonstop
Frontier Logo
7:32 pm - 11:36 pmGEG-PHX
3h 04mnonstop
$100Frontier
Find Deal
Fri, Jan 16 - Tue, Jan 20
Alaska Airlines Logo
3:11 pm - 5:29 pmPHX-BOI
2h 18mnonstop
Alaska Airlines Logo
12:21 pm - 2:29 pmBOI-PHX
2h 08mnonstop
$155Alaska Airlines
Find Deal
Fri, Dec 5 - Tue, Dec 9
Alaska Airlines Logo
10:48 am - 1:12 pmPHX-BOI
2h 24mnonstop
Alaska Airlines Logo
7:35 am - 10:06 amBOI-PHX
2h 31mnonstop
$156Alaska Airlines
Find Deal
Fri, Jan 16 - Tue, Jan 20
American Airlines Logo
11:51 am - 2:08 pmPHX-BOI
2h 17mnonstop
American Airlines Logo
2:52 pm - 5:10 pmBOI-PHX
2h 18mnonstop
$160American Airlines
Find Deal
Tue, Jan 6 - Tue, Jan 13
Southwest Logo
9:00 am - 11:10 amPHX-BOI
2h 10mnonstop
Southwest Logo
10:45 am - 7:55 pmBOI-PHX
9h 10m2 stops
$170Southwest
Find Deal
Fri, Jan 16 - Tue, Jan 20
Delta Logo
2:43 pm - 9:58 pmPHX-BOI
7h 15m1 stop
Delta Logo
4:41 pm - 10:42 pmBOI-PHX
6h 01m1 stop
$173Delta
Find Deal
Fri, Jan 23 - Wed, Jan 28
Delta Logo
4:42 pm - 11:59 pmPHX-BOI
7h 17m1 stop
Delta Logo
8:50 am - 5:35 pmBOI-PHX
8h 45m1 stop
$175Delta
Find Deal
Fri, Jan 16 - Wed, Jan 21
Southwest Logo
5:55 pm - 10:55 pmPHX-BOI
5h 00m1 stop
Southwest Logo
10:45 am - 7:55 pmBOI-PHX
9h 10m2 stops
$180Southwest
Find Deal
Sun, Jan 18 - Tue, Jan 20
American Airlines Logo
9:25 pm - 11:11 pmPHX-GEG
2h 46mnonstop
American Airlines Logo
6:30 am - 10:22 amGEG-PHX
2h 52mnonstop
$187American Airlines
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 $148 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 $148.

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 $367, 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 March and December, when the average cost of round-trip tickets is $298 and $282 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 47% 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$20
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 28% 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 $197 on average. Morning departures are around 33% 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 11214 reviews
8.5Crew
8.1Boarding
7.8Comfort
7.0Entertainment
7.1Food
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.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The flight was CANCELED!!! Can’t get much more “poor” than that. I had to switch to American Airlines, add another layover and got home in Honolulu 4 hours later than I was supposed to be home. One bright spot was Josh with Alaska Airlines at SFO. He got me on a United Flight that got me home a few hours before I would have. Without him I would have gotten home almost 7 hours after my originally scheduled flight.

Canceled my flight within 24 hours, causing me arriving home midnight. Will never book Hawaiian airlines anymore

I like Hawaiian, it was great that they had good internet connection across the Pacific Ocean, thanks to Star Link satellites. The seating was comfortable, ( I was in economy ). Maybe I missed it, but I only got offered a beverage once. It was a nonstop flight KOA to SMF. I would take it again next time I go that way.

I always love flying Hawaii and I have nothing to add

Previously flown Hawaiian Airlines on similar routes, I found Alaska Airlines to be noticeably more comfortable. The seats on Alaska Airlines provided better support and cushioning, which made a significant difference on the long flight to the islands. When you’re spending 5-6 hours in the air, seat comfort really matters, and Alaska Airlines delivered where it counts. After comparing both carriers, I’ve decided to book with Alaska Airlines for all my future Hawaii trips. The superior seat comfort alone makes it worth choosing Alaska over Hawaiian Airlines. If you’re planning a trip to Hawaii and prioritizing comfort, I’d recommend giving Alaska Airlines a try. You won’t be disappointed. Highly recommended for Hawaii travel!

I received several emails about my 3:10 flight. When I showed up to the airport at 12:30 to check my bags I was told the flight was actually at 1 pm. They grudgingly rebooked me for a flight at 5:22 to Vegas to get a connecting to LAX. I did find the gate for my original 3:10 flight but they were booked. I proceeded to receive status updates and gate change information for the 3:10 flight, even though I was apparently never supposed to be on that flight

My flight was delayed three hours and then cancelled. The gate agent proceeded to rebook me in a middle seat without telling me and I was placed between two large individuals who did not fit in their own seats and instead took up most of mine. It was an awful experience.

The food options were limited and very specific. Some type of entertainment option for a 4.5 hour flight would have been nice.

Flight was smooth and comfortable. We were able to check a bag at counter due to full flight and boarded with an earlier group. We were there very early and didn’t hear the gate change just noticed our flight was no longer displayed st the gate. There were two other flights with gate shuffles - may be unavoidable but not desirable. First time I had to print my own luggage tag and attach at arrival. Not a fan of that process.

The crew was EXTREMELY helpful And sweet and the flight was smooth!

We are too tired and frustrated to comment politely at this point

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 .

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