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£79 Cheap Flights from Phoenix (PHX) to Boise (BOI)

View £79 flight on Tue, 22 Sept 2026Opens in a new window

Popular airlines from Sky Harbor International Airport (PHX) to Boise Airport (BOI)

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

Prices were available within the past 7 days and start at £79 for one-way flights and £198 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, 8 Sept - Thu, 10 Sept
PHX
Phoenix
BOI
Boise
£198 Return, found 5 days ago
£198
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 8 Sept from Phoenix to Boise, returning Thu, 10 Sept, priced at £198 found 5 days ago
Alaska Airlines
Tue, 8 Sept - Thu, 10 Sept
PHX
Phoenix
BOI
Boise
£206 Return, found 5 days ago
£206
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 8 Sept from Phoenix to Boise, returning Thu, 10 Sept, priced at £206 found 5 days ago
Alaska Airlines
Mon, 16 Nov - Mon, 23 Nov
PHX
Phoenix
BOI
Boise
£206 Return, found 5 days ago
£206
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 16 Nov from Phoenix to Boise, returning Mon, 23 Nov, priced at £206 found 5 days ago
Alaska Airlines
Tue, 8 Sept - Thu, 10 Sept
PHX
Phoenix
BOI
Boise
£213 Return, found 5 days ago
£213
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 8 Sept from Phoenix to Boise, returning Thu, 10 Sept, priced at £213 found 5 days ago
Alaska Airlines
Thu, 10 Sept - Sun, 13 Sept
PHX
Phoenix
BOI
Boise
£213 Return, found 5 days ago
£213
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 10 Sept from Phoenix to Boise, returning Sun, 13 Sept, priced at £213 found 5 days ago
Alaska Airlines
Thu, 10 Sept - Sun, 13 Sept
PHX
Phoenix
BOI
Boise
£220 Return, found 5 days ago
£220
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 10 Sept from Phoenix to Boise, returning Sun, 13 Sept, priced at £220 found 5 days ago
Alaska Airlines
Wed, 18 Nov - Wed, 25 Nov
PHX
Phoenix
BOI
Boise
£229 Return, found 5 days ago
£229
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 18 Nov from Phoenix to Boise, returning Wed, 25 Nov, priced at £229 found 5 days ago
Alaska Airlines
Tue, 8 Sept - Thu, 10 Sept
PHX
Phoenix
BOI
Boise
£236 Return, found 5 days ago
£236
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 8 Sept from Phoenix to Boise, returning Thu, 10 Sept, priced at £236 found 5 days ago
Alaska Airlines
Mon, 16 Nov - Mon, 23 Nov
PHX
Phoenix
BOI
Boise
£236 Return, found 5 days ago
£236
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 16 Nov from Phoenix to Boise, returning Mon, 23 Nov, priced at £236 found 5 days ago
Alaska Airlines
Tue, 8 Sept - Thu, 10 Sept
PHX
Phoenix
BOI
Boise
£243 Return, found 5 days ago
£243
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 8 Sept from Phoenix to Boise, returning Thu, 10 Sept, priced at £243 found 5 days ago

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

January is typically the cheapest month to fly

From £68 - £253 per traveller.

Frequently asked questions

How much does a flight from Phoenix, AZ (PHX) to Boise, ID (BOI) cost?
You can find one-way and return flights from Phoenix, AZ (PHX) to Boise, ID (BOI) with Expedia. 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 our cheapest fares first, and use the Price Tracking tool to receive alerts when PHX to BOI ticket fares go up or down.
What is the cheapest month to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
January is typically the cheapest month to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI), with average return fares around £169. January often sees lower prices because it falls after the busy holiday travel season, when demand tends to drop and airlines offer more competitive fares. August and September are also good months to find deals on this route.
Which airlines fly direct from Phoenix, AZ (PHX) to Boise, ID (BOI)?
Enter PHX to BOI and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
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 airline to fly with from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
The best airline to fly with from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI) will differ from traveller to traveller. If you like to fly early, American Airlines offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI), 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 Phoenix, AZ (PHX) to Boise, ID (BOI)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
You'll find around 6 nonstop flights per day from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI). For even more choices, look at flights that include layovers, as there are approximately 113 connecting flights per day. Some common connection points include Harry Reid Intl. (LAS), Los Angeles Intl. (LAX), and Seattle - Tacoma Intl. (SEA).
What is the earliest flight from Phoenix, AZ (PHX) to Boise, ID (BOI)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Phoenix, AZ (PHX) to Boise, ID (BOI). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Boise, ID (BOI)?
You'll generally find the most flights from Phoenix Sky Harbor International Airport (PHX) to Boise (BOI) on a Thursday, with around 79 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Southwest Airlines, Alaska Airlines, and United.
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-Sky Harbor Intl.) to Boise, ID (BOI) are in the early morning, from 6am to 9am. Many major carriers, including Southwest Airlines, Alaska Airlines and Delta, offer flights during this window. Many travellers prefer this time as it allows for an early start to their day in Boise.
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 1,184 kilometers. 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)?
Yes, you can fly business class or first class between PHX and BOI. Airlines that offer business class service on this route include:
  • Frontier Airlines
  • Delta
First class cabins are available on:
  • Alaska Airlines
  • Delta
  • United
  • American Airlines
How do I earn miles on a Phoenix, AZ (PHX) to Boise, ID (BOI) flight with Expedia?
It's easy to earn miles on a Phoenix, AZ (PHX) 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) to Boise, ID (BOI) at the last minute?
Typically, booking a last minute flight from Phoenix, AZ (PHX) 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) to Boise, ID (BOI) flight and hotel package?
Securing a Phoenix, AZ (PHX) to Boise, ID (BOI) flight and hotel package 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
Return price
£198
Distance
1177 km
Average flight time
3 hours 27 mins

Book with confidence

Compare flights from Phoenix to Boise easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Phoenix to Boise. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Boise in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Sky Harbor Intl. to Boise.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Sky Harbor Intl. (PHX) to Boise (BOI)

The easiest way to view the best deals on flights from Phoenix to Boise today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Sky Harbor Intl. to Boise start at just £198 and range up to £243.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Phoenix and Boise
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Phoenix to Boise flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Sky Harbor Intl. to Boise for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Phoenix to Boise easily and book with confidence

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*Available to Expedia members.