$40 Find Cheap Flights from Phoenix 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 Phoenix to Idaho departing on 1/8. 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

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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Flight Deals

Book Cheap Phoenix 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 Phoenix 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 Phoenix to Idaho

Thu, Feb 26 - Sun, Mar 1
Frontier Logo
4:46 pm - 6:37 pm
PHX
-
GEG
2h 51mnonstop
Frontier Logo
12:23 pm - 12:33 am
GEG
-
PHX
11h 10m1 stop
$104Frontier
Thu, Feb 26 - Sun, Mar 1
Frontier Logo
4:46 pm - 6:37 pm
PHX
-
GEG
2h 51mnonstop
Frontier Logo
7:32 pm - 11:36 pm
GEG
-
PHX
3h 04mnonstop
$114Frontier
Wed, Jan 7 - Sat, Jan 10
American Airlines Logo
9:42 am - 12:07 pm
PHX
-
BOI
2h 25mnonstop
American Airlines Logo
12:37 pm - 2:55 pm
BOI
-
PHX
2h 18mnonstop
$157American Airlines
Tue, Feb 3 - Thu, Feb 5
American Airlines Logo
2:43 pm - 5:07 pm
PHX
-
BOI
2h 24mnonstop
American Airlines Logo
2:48 pm - 5:02 pm
BOI
-
PHX
2h 14mnonstop
$167American Airlines
Fri, Jan 16 - Tue, Jan 20
Southwest Logo
8:50 am - 11:00 am
PHX
-
BOI
2h 10mnonstop
Southwest Logo
5:25 pm - 10:05 pm
BOI
-
PHX
4h 40m1 stop
$177Southwest
Fri, Jan 16 - Tue, Jan 20
Southwest Logo
8:50 am - 11:00 am
PHX
-
BOI
2h 10mnonstop
Southwest Logo
10:45 am - 7:55 pm
BOI
-
PHX
9h 10m2 stops
$182Southwest
Wed, Feb 18 - Tue, Feb 24
Delta Logo
7:15 am - 4:19 pm
PHX
-
JAC
9h 04m2 stops
Delta Logo
1:05 pm - 5:08 pm
JAC
-
PHX
4h 03m1 stop
$224Delta
Wed, Jan 7 - Wed, Jan 14
Delta Logo
6:20 pm - 9:55 pm
PHX
-
SUN
3h 35m1 stop
Delta Logo
12:55 pm - 11:15 pm
SUN
-
PHX
10h 20m2 stops
$224Delta
Thu, Jan 29 - Mon, Feb 2
Alaska Airlines Logo
7:35 pm - 11:14 am
PHX
-
SUN
15h 39m1 stop
Alaska Airlines Logo
11:56 am - 5:53 pm
SUN
-
PHX
5h 57m1 stop
$281Alaska Airlines
Fri, Jan 30 - Thu, Feb 5
Alaska Airlines Logo
5:12 pm - 12:11 pm
PHX
-
JAC
18h 59m2 stops
Alaska Airlines Logo
11:48 am - 7:25 pm
JAC
-
PHX
7h 37m1 stop
$304Alaska Airlines
Booking Insights

KAYAK's insights & trends for Phoenix to Idaho flights

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

How much is a round-trip flight from Phoenix to Idaho?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Phoenix to Idaho departing in January.

What is the cheapest Phoenix 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 found in the last 72 hours was to Boise, at $103 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 $157.

What is the cheapest month to fly from Phoenix to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Phoenix 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 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 $368 and $295 respectively.

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

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

When flying from Phoenix to Idaho, you should consider leaving on a Thursday and avoid Sundays if you are looking for the best rates. For your return to Phoenix, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

How far in advance should I book a flight from Phoenix 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 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 to Idaho, you should book around 4 weeks before departure, which saves you about 53% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Cheapest flight$40
Flight from Phoenix Sky Harbor Airport to Spokane

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Phoenix 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 to Idaho.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Phoenix 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 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 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 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 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 $194 on average. Morning departures are around 38% 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 $284.

Reviews of the top 5 airlines serving from Phoenix 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 Phoenix 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 11427 reviews
8.1Boarding
7.8Comfort
8.5Crew
7.0Entertainment
7.1Food
Airline reviews

Flight crew and flight were good. But it departed two hours late.

6.0 GoodAnonymous, Dec 2025
SFO - BOI
Read more Alaska Airlines reviews

Flight crew and flight were good. But it departed two hours late.

Good. Flight was good. Crew was good. Wish they offered coffee refills. Wish I didn’t have to pay for headphones. Otherwise good for a commercial flight.

Boarding was good. Alaska Airlines is good. On time good. clean. The little bag of peanuts was horrible.

Pretzels are always a disappointment. Cheezits, Sun Chips, trail mix, anything else would be nice.

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.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

Liked that it was on time. Staff professional and friendly.

More choices on snacks. Built-in video screen to enjoy entertainment choices.

Loved the crew . Absolutely no complaints. Except for luggage lost

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

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.

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

The crew was great and the flight was very smooth. Can’t really judge food since I did not get any because it costs money. The seat was comfortable for what we bought. Thanks!

Crew was great. No entertainment and food and beverage was for purchase only, even water

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

Everything you need to know for your flight from Phoenix to Idaho

Cabin class types available on flights to Idaho

Cabin classes available on flights to Idaho. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.