$51 Cheap Flights from Phoenix (PHX) to Boise (BOI)

Phoenix (PHX) to Boise (BOI) at a glance

Travel from Phoenix (PHX) to Boise (BOI) on this domestic short-haul route, where a variety of airlines provide options for your journey. Whether you prefer full-service airlines or budget-friendly carriers, you can compare choices to find the best itinerary that suits your budget and schedule. As you plan your trip, discover Boise's iconic attractions and neighborhoods. Get all the essential details for flights departing from Sky Harbor International Airport (PHX) to Boise Airport (BOI).

• Fastest flight duration: around 2h 15m non-stop
• Route distance: roughly 700 miles (1,130 km)
• Flights per week: around 35+ flights with multiple daily departures on average
• Typical fares (one-way): economy tickets often range from $70–$335, depending on seasonality and how far ahead you book

Flights from Sky Harbor International Airport (PHX) to Boise Airport (BOI)

Recent traveler bookings reveal the top airlines favored for flights from Phoenix to Boise, especially for those seeking non-stop and one-stop options. Popular layover spots include Salt Lake City International Airport (SLC) with a typical 1-hour 15-minute layover, Denver International Airport (DEN) with about a 1-hour layover, and Seattle-Tacoma International Airport (SEA), also around 1 hour 15 minutes. These choices allow you to tailor your itinerary by balancing price, total travel time, and cabin class for the best experience.

• American Airlines: This full-service airline provides non-stop flights, with one-way ticket prices generally falling between $80 and $365. It represents about 34% of departures on this route, with an estimated travel duration of 2 hours and 15 minutes.
• Southwest Airlines: Known as a budget-friendly option, this carrier offers both non-stop and one-stop flights, with one-way fares typically ranging from $70 to $315. It accounts for approximately 31% of departures, featuring a standard non-stop journey time of 2 hours and 15 minutes.
• Alaska Airlines: As a full-service provider, Alaska Airlines features both non-stop and one-stop options, with one-way fares usually between $80 and $345. It covers roughly 23% of departures on this route, maintaining a consistent non-stop flight time of 2 hours and 15 minutes.
• Delta: This full-service airline offers one-stop service, with one-way fares typically priced from $70 to $325. Delta makes up about 6% of departures on this route, with flight times around 3 hours and 45 minutes, totaling approximately 5 hours including layovers.
• United: Offering both non-stop and one-stop flights, United is a full-service airline with one-way fares ranging from $100 to $645. It accounts for about 3% of departures, featuring a standard one-stop travel time of 3 hours and 45 minutes, totaling around 5 hours overall.

Travelers flying from Phoenix to Boise can enhance their journey by upgrading to premium cabins. Alaska Airlines provides both First Class and Business Class, while American Airlines offers First Class.

Best time to fly from Phoenix (PHX) to Boise (BOI)

The most popular months for travelers flying from Phoenix to Boise are February, March, and April, when peak temperatures in Boise reach up to 48.6°F in April. If you prefer quieter travel, consider August, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 76.1°F. For better deals, September usually offers the lowest average one-way fare around $145. Flight availability peaks in November, with approximately 45 flights per week, making it easier to find convenient departure times. September has the fewest flights, with approximately 31 flights per week.

• Cheapest time to fly: September usually offers good deals with average one-way fare around $145, roughly 15% cheaper than the yearly average.
• More budget-friendly months to fly: August, May, and October typically offer average one-way fares of around $154.
• Most flight options: November has the highest number of flights from Phoenix to Boise, with approximately 45 flights per week, giving you more flexibility in scheduling your trip.

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Phoenix (PHX) to Boise (BOI)

• Scottsdale to Boise (SCF-BOI): Located approximately 14 miles from Sky Harbor International Airport (PHX), Scottsdale Airport (SCF) serves as a convenient departure point.
• Mesa to Boise (AZA-BOI): Phoenix - Mesa Gateway Airport (AZA) lies around 22 miles from Sky Harbor International Airport (PHX), offering another travel option.
• Phoenix to Ontario (PHX-ONO): Ontario Municipal Airport (ONO) is roughly 55 miles distant from Boise Airport (BOI), providing accessibility for travelers heading that way.

How to find the best prices for flights from Phoenix (PHX) to Boise (BOI)

Getting some of the best deals on flights from Phoenix to Boise is all about timing and flexibility. Here are some key tips to help you save:

1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, which aligns with when most travelers make their reservations. Departures in the morning (5 am-12 pm) tend to be less expensive and are also the most popular flight times. Additionally, flying on Thursday often results in lower prices, while Sunday remains the busiest travel day.
2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Boise Airport from Sky Harbor International Airport

Boise welcomes travelers from Phoenix with a range of transport options based on price, convenience, and proximity. Here's how to reach Boise efficiently:

• Hotel transfer: Transfers offer a convenient way to reach your hotel in Boise, with private rides that can be arranged in advance.
• Car rental: Renting a car from Boise Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Boise Airport on Expedia.
• Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
• Public transportation: From Boise Airport, travelers can conveniently reach Boise Station, a train station located about 2.4 miles away by car, while Boise Bus Station, a bus station, is situated approximately 3.8 miles away by car, providing easy access to public transportation options.

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 January. 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 $51 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.