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$76+ Cheap flights from Boise (BOI) to Phoenix

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHX
Apr 21 — Apr 281
Tue 4/21
Tue 4/28
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Phoenix are usually found in September or August, booked 84 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from Boise to Phoenix

Cheapest flights from Boise to Phoenix
Explore the most affordable flight options available from Boise to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 22, 2026.

This Southwest deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:00 am
BOI
-
PHX
1 stop4h 45m
Southwest
Tue 4/288:25 pm
PHX
-
BOI
Nonstop2h 05m
Southwest
Deal found 3/22$177
This Frontier deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/191:22 pm
BOI
-
PHX
1 stop11h 09m
Frontier
Thu 5/215:15 am
PHX
-
BOI
1 stop6h 15m
Frontier
Deal found 3/22$185
This Expedia deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1911:53 am
BOI
-
PHX
1 stop24h 52m
Multiple Airlines
Tue 4/218:40 pm
PHX
-
BOI
Nonstop2h 18m
Multiple Airlines
Deal found 3/19$204
This CheapOair deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/141:22 pm
BOI
-
PHX
1 stop11h 09m
Frontier
Wed 5/206:53 pm
PHX
-
BOI
1 stop16h 37m
Frontier
Deal found 3/18$212
This CheapOair deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/212:03 pm
BOI
-
PHX
1 stop26h 51m
Frontier
Sat 4/46:50 am
PHX
-
BOI
1 stop27h 18m
Frontier
Deal found 3/21$216
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:50 pm
BOI
-
PHX
Nonstop2h 05m
Southwest
Tue 4/218:25 pm
PHX
-
BOI
Nonstop2h 05m
Southwest
Deal found 3/18$217
This Expedia deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:22 pm
BOI
-
PHX
1 stop11h 09m
Frontier
Sun 5/105:15 am
PHX
-
BOI
1 stop6h 12m
Frontier
Deal found 3/20$222
This American Airlines deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:26 pm
BOI
-
PHX
Nonstop2h 15m
American Airlines
Sat 4/258:25 pm
PHX
-
BOI
Nonstop2h 16m
American Airlines
Deal found 3/21$224

Find flight deals from Boise to Phoenix

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Phoenix (PH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 22, 2026.

Round-trip from

$177
(Southwest)

One-way from

$76
(Travelocity)

Popular in

March

Cheapest in

September

Average price

$349
From Boise Air Term. Gowen Fld to Phoenix
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Phoenix
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Phoenix that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 22, 2026.
Use the filters below to find and compare flights from Boise to Phoenix that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Wed 4/29

7:05 am-10:10 am

1 stop4h 05m

Phoenix Sky Harbor Intl

Sun 5/3

10:45 pm-1:50 am

Nonstop2h 05m

$237

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 4/24

4:20 pm-9:10 pm

1 stop5h 50m

Phoenix Sky Harbor Intl

Mon 4/27

10:00 am-6:20 pm

2 stops7h 20m

$262

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 5/7

1:20 pm-8:50 pm

1 stop8h 30m

Phoenix Sky Harbor Intl

Sun 5/10

8:45 pm-1:25 am

1 stop3h 40m

$262

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 4/30

7:55 pm-9:00 pm

Nonstop2h 05m

Phoenix Sky Harbor Intl

Sun 5/3

10:45 pm-1:50 am

Nonstop2h 05m

$272
Quickest round-trip

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sat 6/20

5:40 am-6:45 am

Nonstop2h 05m

Phoenix Sky Harbor Intl

Fri 7/17

10:45 pm-1:45 am

Nonstop2h 00m

$276

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 4/16

4:15 pm-11:52 pm

1 stop8h 37m

Phoenix Sky Harbor Intl

Mon 4/20

8:40 pm-11:58 pm

Nonstop2h 18m

$290

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Mon 9/7

5:44 pm-6:56 pm

Nonstop2h 12m

Phoenix Sky Harbor Intl

Tue 9/22

7:38 pm-10:45 pm

Nonstop2h 07m

$296

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Wed 4/8

6:00 am-11:30 am

2 stops6h 30m

Phoenix Sky Harbor Intl

Wed 4/8

3:35 pm-11:20 pm

2 stops6h 45m

$302

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 5/29

5:40 pm-11:10 pm

1 stop6h 30m

Phoenix Sky Harbor Intl

Sun 5/31

9:15 am-12:20 pm

Nonstop2h 05m

$305

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 6/5

8:58 am-2:57 pm

1 stop6h 59m

Phoenix Sky Harbor Intl

Mon 6/8

4:10 pm-11:04 pm

1 stop5h 54m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/17

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Boise to Phoenix

Have a flexible travel schedule? Discover the best time to fly to Phoenix from Boise with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boise to Phoenix

How far ahead should I book a flight from Boise to Phoenix?

Use this chart to determine the optimal time to book a round-trip flight from Boise to Phoenix. Price data was last updated on March 13, 2026.

To ensure you get the cheapest price possible for a flight from Boise to Phoenix, you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Boise to Phoenix?

Currently, August is the cheapest month in which you can book a flight from Boise to Phoenix (average of $82). Flying from Boise to Phoenix in September is currently the most expensive (average of $137). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOI to PHX?

Find hourly flight availability from Boise to Phoenix. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 22, 2026.

When flying from Boise to Phoenix, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 18% versus a flight in the morning.

Weekly flight availability from Boise to Phoenix

Explore weekly flight availability from Boise to Phoenix. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 22, 2026.

The most flights from BOI to PH1 are scheduled on a Friday (11 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Phoenix

Get insights into the airlines that provide service to Phoenix. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Phoenix. Reviews last updated March 22, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andHawaiian Airlines from Boise to Phoenix have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,325 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,325 reviews
Southwest
8.0
Very good
4,325 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Alaska Airlines
7.9
Good
12,094 reviews
Southwest
8.0
Very good
4,325 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Hawaiian Airlines
7.8
Good
2,841 reviews
Southwest
8.0
Very good
4,325 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Allegiant Air
7.3
Good
711 reviews
Southwest
8.0
Very good
4,325 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,485 reviews
Southwest
8.0
Very good
4,325 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Boise to Phoenix. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boise to Phoenix?

    Most people fly from Boise Air Term. Gowen Fld (BOI) if they book a flight from Boise to Phoenix. On average, Air Term. Gowen Fld has 7 outbound flights to Phoenix per day from 7 airlines. Boise Air Term. Gowen Fld is conveniently located just 3.3 mi from Boise’s city center.

  • How long is the flight from Boise to Phoenix?

    For as low as $237, Southwest can have you in Phoenix from Boise in 4h 05m. The distance between Boise and Phoenix is about 736 mi.

  • What are the cheapest airlines flying from Boise to Phoenix round-trip?

    Our cheapest airline available from Boise to Phoenix is Allegiant Air. Our recent data shows that you can find tickets from as low as $82 on this airline. Additional options worth looking into are Delta and Hawaiian Airlines, starting at $88 and $88 round-trip. Allegiant Air is priced at 69% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boise to Phoenix one-way?

    The cheapest airlines for a one-way flight from Boise to Phoenix are Allegiant Air ($51), Alaska Airlines ($78), and Southwest ($78).

  • What are the most reliable airlines from Boise to Phoenix?

    Before booking your flight to Phoenix from Boise, check out the most reliable airlines to get you to your destination on time: Alaska Airlines (93%), Porter Airlines (91%), Hawaiian Airlines( 81%).

  • What are the cheapest flights from Boise to Phoenix?

    Looking for the cheapest flight from Boise to Phoenix? While on average our users pay $300, our data indicates the cheapest price to be $93. The most popular route (Boise Air Term. Gowen Fld - Phoenix Sky Harbor Intl), is priced around $220.

  • Can I find deals for flights from Boise to Phoenix that include hotel bookings?

    Yes. In addition to deals on Boise to Phoenix flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Phoenix?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Phoenix.

  • Can I find deals for business class flights from Boise to Phoenix?

    Yes. Cheapflights offers flight deals from Boise to Phoenix by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boise to Phoenix?

    Currently, August is the cheapest month in which you can book a flight from Boise to Phoenix (average of $82). Flying from Boise to Phoenix in September is currently the most expensive (average of $137). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 7 airlines flying from Boise to Phoenix

Discover the top 7 airlines that operate flights from Boise to Phoenix. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$82Average$125FlexibilityNo cancel feeOn-time88%
DeltaCheapest$88Average$196FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$88Average$237FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$157Average$317FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$157Average$264FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$158Average$289FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$196Average$271FlexibilityNo cancel feeOn-time69%

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