$54 Cheap Flights from Boise (BOI) to Phoenix (PHX)

View $54 flight on Sat, Jan 31, 2026Opens in a new window

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

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Today's featured flight deals from Boise Airport (BOI) to Phoenix Sky Harbor Intl. Airport (PHX)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Boise to Phoenix (BOI-PHX)

Prices were available within the past 7 days and start at $54 for one-way flights and $107 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Jan 13 - Wed, Jan 14
BOI
Boise
PHX
Phoenix
$107 Roundtrip, found 3 hours ago
$107
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Tue, Jan 13 from Boise to Phoenix, returning Wed, Jan 14, priced at $107 found 3 hours ago
Southwest Airlines
Sat, Jan 10 - Mon, Jan 12
BOI
Boise
PHX
Phoenix
$113 Roundtrip, found 1 hour ago
$113
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, Jan 10 from Boise to Phoenix, returning Mon, Jan 12, priced at $113 found 1 hour ago
Southwest Airlines
Tue, Jan 13 - Wed, Jan 14
BOI
Boise
PHX
Phoenix
$116 Roundtrip, found 3 hours ago
$116
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Tue, Jan 13 from Boise to Phoenix, returning Wed, Jan 14, priced at $116 found 3 hours ago
Southwest Airlines
Thu, Jan 22 - Mon, Jan 26
BOI
Boise
PHX
Phoenix
$119 Roundtrip, just found
$119
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Jan 22 from Boise to Phoenix, returning Mon, Jan 26, priced at $119 just found
Southwest Airlines
Tue, Dec 9 - Wed, Dec 10
BOI
Boise
PHX
Phoenix
$122 Roundtrip, found 3 hours ago
$122
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Tue, Dec 9 from Boise to Phoenix, returning Wed, Dec 10, priced at $122 found 3 hours ago
Southwest Airlines
Sat, Jan 10 - Mon, Jan 12
BOI
Boise
PHX
Phoenix
$123 Roundtrip, found 1 hour ago
$123
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, Jan 10 from Boise to Phoenix, returning Mon, Jan 12, priced at $123 found 1 hour ago
American Airlines
Tue, Dec 16 - Tue, Jan 6
BOI
Boise
PHX
Phoenix
$132 Roundtrip, found 10 hours ago
$132
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Tue, Dec 16 from Boise to Phoenix, returning Tue, Jan 6, priced at $132 found 10 hours ago
Frontier Airlines
Thu, Dec 4 - Sat, Dec 6
BOI
Boise
PHX
Phoenix
$136 Roundtrip, found 1 hour ago
$136
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Boise to Phoenix, returning Sat, Dec 6, priced at $136 found 1 hour ago
Alaska Airlines
Tue, Jan 20 - Sat, Jan 24
BOI
Boise
PHX
Phoenix
$141 Roundtrip, found 11 hours ago
$141
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Tue, Jan 20 from Boise to Phoenix, returning Sat, Jan 24, priced at $141 found 11 hours ago
Hawaiian Airlines
Tue, Jan 27 - Thu, Feb 12
BOI
Boise
PHX
Phoenix
$153 Roundtrip, found 4 days ago
$153
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Jan 27 from Boise to Phoenix, returning Thu, Feb 12, priced at $153 found 4 days ago

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

September is typically the cheapest month to fly

From $89 - $146 per traveler.
Flights from Boise (BOI) to Phoenix (PHX)
Origin airport
Boise
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$106
Distance
735 mi
Average flight time
1 hour 9 mins

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 January. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $54 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.

 

Frequently asked questions

How much does a flight from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX) cost?
Secure a cheap one-way flight from $54 or cheap return flight from $107 from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX)?
The cheapest month to fly from BOI to PHX is January, when demand is low. Off-peak season is usually when you'll find cheap fares for travel between these airports.
Which airlines fly direct from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX)?
Enjoy an uninterrupted journey to Sky Harbor Intl. Airport (PHX). 3 airlines offer direct routes from Boise Airport (BOI), including:

  • American Airlines
  • Southwest Airlines
  • Alaska Airlines

What is the cheapest airline that flies from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX)?
While prices can change depending on when you travel, Alaska Airlines and Southwest Airlines are popular choices for flights between Boise Airport (BOI) and Sky Harbor Intl. Airport (PHX). You can also compare carriers on Expedia and use the "Sort by" filter to find the cheapest ticket for your BOI to PHX flight.
How many flights per day from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX)?
When flying out of Boise Airport (BOI), you can choose from an average of 5 daily nonstop flights to Sky Harbor Intl. Airport (PHX).
What are the most popular departure times for flights from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX)?
Flights between BOI and PHX are busiest at 6 AM. If you'd like a more relaxed trip and potentially cheaper fares, look for a time outside the usual busy windows.
What day of the week has the most flights from BOI to PHX?
If you fly on a Friday, you'll get the biggest range of choices for flights from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX).
What is the earliest flight from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX)?
Hop on the earliest flight at around 6:39AM UTC-7, departing from Boise Airport (BOI). You'll be flying for about 2h 19m, arriving at Sky Harbor Intl. Airport (PHX) at approximately 8:58AM UTC-7.
How long does it take to fly from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX)?
It takes approximately 2 hours and 10 minutes to fly the 740 mi from BOI to PHX.
What airline has the least delays from BOI to PHX?
With 89% of flights typically arriving on time, Alaska Airlines has the best on-time performance for direct flights from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX). To check your flight status and get notified about any changes, simply head to the Expedia App.
What is the best time to fly from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX)?
Book a flight from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Phoenix from Boise Airport (BOI)?
You'll land at Sky Harbor Intl. Airport (PHX) or Phoenix - Mesa Gateway Airport (AZA) when traveling to Phoenix on a direct flight from Boise Airport (BOI).
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX) last-minute?
Waiting until right before your break to book a ticket from BOI to PHX often results in higher prices. While you might find some last-minute discounts, they aren't always guaranteed. Be flexible with your itinerary for a better chance of snagging a bargain.
Is it cheaper to book a BOI to PHX flight and hotel package?
You'll generally save money by securing a BOI to PHX flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After selecting your ideal flights and accommodations, consider adding extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Sky Harbor Intl. Airport (PHX)?
Usually, it's possible to cancel or reschedule your BOI to PHX flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.