$76 Cheap Flights from Boise (BOI) to Phoenix (PHX)

View $76 flight on Sun, May 24, 2026Opens in a new window

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

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Cheap Flights from Boise to Phoenix (BOI-PHX)

Prices were available within the past 7 days and start at $76 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
Sun, May 24 - Thu, May 28
BOI
Boise
PHX
Phoenix
$160 Roundtrip, found 9 hours ago
$160
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Sun, May 24 from Boise to Phoenix, returning Thu, May 28, priced at $160 found 9 hours ago
Southwest Airlines
Sat, May 2 - Sun, May 10
BOI
Boise
PHX
Phoenix
$180 Roundtrip, found 3 hours ago
$180
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Sat, May 2 from Boise to Phoenix, returning Sun, May 10, priced at $180 found 3 hours ago
Frontier Airlines
Sun, May 24 - Sun, May 31
BOI
Boise
PHX
Phoenix
$181 Roundtrip, found 5 hours ago
$181
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sun, May 24 from Boise to Phoenix, returning Sun, May 31, priced at $181 found 5 hours ago
Frontier Airlines
Sun, May 24 - Sat, May 30
BOI
Boise
PHX
Phoenix
$184 Roundtrip, found 7 hours ago
$184
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sun, May 24 from Boise to Phoenix, returning Sat, May 30, priced at $184 found 7 hours ago
Frontier Airlines
Tue, May 26 - Thu, Jun 4
BOI
Boise
PHX
Phoenix
$185 Roundtrip, found 1 hour ago
$185
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, May 26 from Boise to Phoenix, returning Thu, Jun 4, priced at $185 found 1 hour ago
Southwest Airlines
Sat, May 2 - Sun, May 10
BOI
Boise
PHX
Phoenix
$188 Roundtrip, found 3 hours ago
$188
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Sat, May 2 from Boise to Phoenix, returning Sun, May 10, priced at $188 found 3 hours ago
Frontier Airlines
Thu, Jun 4 - Sun, Jun 7
BOI
Boise
PHX
Phoenix
$190 Roundtrip, found 2 hours ago
$190
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Jun 4 from Boise to Phoenix, returning Sun, Jun 7, priced at $190 found 2 hours ago
United
Tue, May 12 - Thu, May 21
BOI
Boise
PHX
Phoenix
$214 Roundtrip, found 1 hour ago
$214
Roundtrip
found 1 hour ago
Select United flight, departing Tue, May 12 from Boise to Phoenix, returning Thu, May 21, priced at $214 found 1 hour ago
American Airlines
Tue, May 5 - Sat, May 9
BOI
Boise
PHX
Phoenix
$217 Roundtrip, found 2 hours ago
$217
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Tue, May 5 from Boise to Phoenix, returning Sat, May 9, priced at $217 found 2 hours ago
Alaska Airlines
Sat, May 30 - Wed, Jun 3
BOI
Boise
PHX
Phoenix
$217 Roundtrip, found 2 hours ago
$217
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Sat, May 30 from Boise to Phoenix, returning Wed, Jun 3, priced at $217 found 2 hours ago

Frequently asked questions

How much does a flight from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) cost?
You can find cheap one-way flights from $76 and cheap return flights from $160 Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) with Expedia. One-way flights usually range from $126 to $830, and return flights typically cost between $235 and $902. 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 Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) 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 Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
September is the cheapest month to fly from Boise, ID (BOI) to Phoenix, AZ (PHX), with average return fares around $238. This price is about 15% lower than the average throughout the year, as September typically sees a decrease in travel demand after the summer peak. Other affordable months to fly include January and August.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Choose from 2 airlines operating direct flights from BOI to PHX:

  • American Airlines operates around 31 direct flights from BOI to PHX every week
  • Hawaiian Airlines operates around 21 direct flights from BOI to PHX every week

How do I find cheap flights from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
To find a cheap flight from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.), 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 airline to fly with from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The best airline to fly with from Boise, ID (BOI) to Phoenix, AZ (PHX) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. WN offers the most daily flights from Boise to Phoenix, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
When flying from Boise (BOI) to Phoenix (PHX), September and August are the best months to consider, with average return flight prices around $238. These months are not only budget-friendly but also provide a good travel experience. For popular travel times, October and November are favored, but expect higher prices during these months.*Prices based on flights available on Expedia in the last year.
How many flights per day from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
You can find approximately 7 nonstop flights per day from (BOI) to Sky Harbor Intl. (PHX). For more options, look at flights that include layovers.
What is the earliest flight from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from BOI to PHX. 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 Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The most popular departure times for flights from Boise (BOI) to Phoenix (PHX) are in the early afternoon, from 12pm to 3pm. About 28% of passengers prefer this time window. Many major carriers, including United Airlines, American Airlines, and Southwest Airlines, offer flights during this window. This timing works well because it allows travelers to enjoy their morning in Boise before heading to Phoenix.
How long does it take to fly from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Flying nonstop from BOI to PHX takes around 2 hours 20 minutes, with the route covering approximately 736 miles. Flights with a layover typically take 4 hours 40 minutes longer than direct options. 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 Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Select the "Business class" and "First class" filters when looking for BOI to PHX flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How much is a business class flight from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
A direct, return business class ticket from Boise, ID (BOI) to Phoenix, AZ (PHX) typically costs between $742 - $1,214. A non-stop, one-way business class flight is usually around $205 - $446 per adult. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight with Expedia?
It's easy to earn miles on a Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) 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.
What airports do you fly into for Phoenix from BOI (BOI)?
If you're planning to travel to Phoenix from BOI (BOI), you can fly into Sky Harbor Intl. (PHX) Some flights may connect through major hubs like Denver Intl. (DEN), San Francisco Intl. (SFO), Sacramento Intl. (SMF) before reaching Phoenix. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) at the last minute?
Typically, booking a last minute flight from Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) 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 Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight and hotel package?
Securing a Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) Phoenix 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 Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
If you booked your Boise, ID (BOI) to Phoenix, AZ (PHX-Sky Harbor Intl.) 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
Boise
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$160
Distance
735 mi
Average flight time
1 hour 24 mins

Book with confidence

Boise to Phoenix Flights

The cheapest times to fly from Boise to Phoenix

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 Boise to Phoenix are during the month of May. You can find some of the cheapest flights from Boise to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to Phoenix

Sunday is one of the best days to book for cheap flights from Boise to Phoenix: 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 Boise to Phoenix

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 Boise to Phoenix in 2026. You can also book with separate airlines for your outbound and return journeys, from $76 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 Boise to Phoenix 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 Boise to Phoenix 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.

 

Boise to Phoenix Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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