$70 Cheap Flights from Phoenix (PHX) to Boise (BOI)

View $70 flight on Sun, May 10, 2026Opens in a new window

Popular airlines from Phoenix Sky Harbor Intl. Airport (PHX) to Boise Airport (BOI)

Cheap Flights from Phoenix to Boise (PHX-BOI)

Prices were available within the past 7 days and start at $70 for one-way flights and $160 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, May 14 - Tue, May 19
PHX
Phoenix
BOI
Boise
$160 Roundtrip, found 14 hours ago
$160
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Thu, May 14 from Phoenix to Boise, returning Tue, May 19, priced at $160 found 14 hours ago
Frontier Airlines
Sun, Jun 7 - Tue, Jun 9
PHX
Phoenix
BOI
Boise
$180 Roundtrip, found 1 hour ago
$180
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sun, Jun 7 from Phoenix to Boise, returning Tue, Jun 9, priced at $180 found 1 hour ago
Frontier Airlines
Sun, May 10 - Thu, May 14
PHX
Phoenix
BOI
Boise
$181 Roundtrip, found 2 hours ago
$181
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sun, May 10 from Phoenix to Boise, returning Thu, May 14, priced at $181 found 2 hours ago
Southwest Airlines
Tue, May 5 - Tue, May 12
PHX
Phoenix
BOI
Boise
$184 Roundtrip, found 17 hours ago
$184
Roundtrip
found 17 hours ago
Select Southwest Airlines flight, departing Tue, May 5 from Phoenix to Boise, returning Tue, May 12, priced at $184 found 17 hours ago
Frontier Airlines
Thu, May 21 - Sun, May 24
PHX
Phoenix
BOI
Boise
$185 Roundtrip, found 4 hours ago
$185
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Thu, May 21 from Phoenix to Boise, returning Sun, May 24, priced at $185 found 4 hours ago
Southwest Airlines
Sat, May 2 - Tue, May 5
PHX
Phoenix
BOI
Boise
$186 Roundtrip, found 2 days ago
$186
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Sat, May 2 from Phoenix to Boise, returning Tue, May 5, priced at $186 found 2 days ago
Frontier Airlines
Thu, May 14 - Mon, May 18
PHX
Phoenix
BOI
Boise
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, May 14 from Phoenix to Boise, returning Mon, May 18, priced at $189 found 1 hour ago
Delta
Tue, May 19 - Thu, May 21
PHX
Phoenix
BOI
Boise
$193 Roundtrip, found 3 days ago
$193
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, May 19 from Phoenix to Boise, returning Thu, May 21, priced at $193 found 3 days ago
Alaska Airlines
Tue, May 5 - Tue, May 19
PHX
Phoenix
BOI
Boise
$199 Roundtrip, found 4 hours ago
$199
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Tue, May 5 from Phoenix to Boise, returning Tue, May 19, priced at $199 found 4 hours ago
American Airlines
Wed, Apr 22 - Tue, Apr 28
PHX
Phoenix
BOI
Boise
$224 Roundtrip, found 16 hours ago
$224
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Wed, Apr 22 from Phoenix to Boise, returning Tue, Apr 28, priced at $224 found 16 hours ago

Alternative airports near Boise

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Boise Airport BOI. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $335
BOI
Boise Airport
CheapestClosest
Average driving time to city center8 min
Flights from $335

Find the cheapest month to fly from Phoenix (PHX) to Boise (BOI)

August is typically the cheapest month to fly

From $91 - $251 per traveler.

Frequently asked questions

How much does a flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) cost?
You can find cheap one-way flights from $70 and cheap return flights from $160 Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) with Expedia. One-way flights typically cost between $124 and $927, and return flights often range between $227 and $2263. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
January is the cheapest month to fly from Phoenix, AZ (PHX) to Boise, ID (BOI), with average round-trip fares around $226. This price is about 17% lower than the average throughout the year, as travel demand tends to be lower after the holiday season. Other budget-friendly months include August and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
There are 2 airlines offering direct flights from PHX to BOI:

  • American Airlines operates around 30 direct flights from PHX to BOI every week
  • Hawaiian Airlines operates around 7 direct flights from PHX to BOI every week

How do I find cheap flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
To find a cheap flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
The best months to fly from Phoenix, AZ (PHX) to Boise, ID (BOI) are January and August. January features an average price of about $226, making it a budget-friendly option, while August is popular for summer travel. These months provide a good mix of affordability and enjoyable weather for your trip.*Prices based on flights available on Expedia in the last year.
How many flights per day from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
You can find approximately 6 nonstop flights per day from Sky Harbor Intl. (PHX) to (BOI). For more options, look at flights that include layovers.
What is the earliest flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from PHX to BOI. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
The most popular departure times for flights from Phoenix, AZ (PHX) to Boise, ID (BOI) are in the early morning, from 6am to 9am. About 25% of passengers prefer this time window. Many major carriers, including United, Alaska Airlines, and Delta, offer flights during this window. This timing works well because it allows you to arrive in Boise with a full day to explore.
How long does it take to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
Direct flights from PHX to BOI usually take about 2 hours 20 minutes, traveling roughly 736 miles. If you opt for a connecting flight, expect to add around 3 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
First class is available on flights from PHX to BOI. First class cabins are available on:

  • Delta Air Lines
  • United Airlines
  • American Airlines

How do I earn miles on a Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) flight with Expedia?
It's easy to earn miles on a Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) at the last minute?
Typically, booking a last minute flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) flight and hotel package?
Securing a Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) Boise Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
If you booked your Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Sky Harbor Intl.
Destination airport
Boise
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$160
Distance
735 mi
Average flight time
3 hours 11 mins

Book with confidence

Phoenix to Boise Flights

The cheapest times to fly from Phoenix to Boise

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Phoenix to Boise are during the month of May. You can find some of the cheapest flights from Phoenix to Boise with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Phoenix to Boise

Sunday is one of the best days to book for cheap flights from Phoenix to Boise: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Phoenix to Boise

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Phoenix to Boise in 2026. You can also book with separate airlines for your outbound and return journeys, from $70 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Phoenix to Boise flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Phoenix to Boise airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Phoenix to Boise Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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