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$74+ 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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHX
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 83 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 February 3, 2026.

This Expedia deal was found by Cheapflights users on 2/1. 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 4/2311:53 am
BOI
-
PHX
1 stop6h 50m
Multiple Airlines
Tue 4/286:00 am
PHX
-
BOI
1 stop8h 33m
Multiple Airlines
Deal found 2/1$169
This Southwest deal was found by Cheapflights users on 2/1. 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 2/283:00 pm
BOI
-
PHX
Nonstop2h 05m
Southwest
Mon 3/27:15 am
PHX
-
BOI
1 stop5h 05m
Southwest
Deal found 2/1$172
This Expedia deal was found by Cheapflights users on 2/2. 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.
Mon 2/234:02 pm
BOI
-
PHX
1 stop7h 57m
Multiple Airlines
Thu 2/266:00 am
PHX
-
BOI
1 stop5h 51m
Multiple Airlines
Deal found 2/2$173
This Delta deal was found by Cheapflights users on 2/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/167:30 pm
BOI
-
PHX
1 stop5h 28m
Delta
Tue 3/178:45 am
PHX
-
BOI
1 stop6h 15m
Delta
Deal found 2/1$174
This Southwest deal was found by Cheapflights users on 2/2. 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.
Mon 2/236:00 am
BOI
-
PHX
Nonstop2h 15m
Southwest
Thu 2/2611:00 am
PHX
-
BOI
Nonstop2h 10m
Southwest
Deal found 2/2$177
This Southwest deal was found by Cheapflights users on 2/1. 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 2/2410:45 am
BOI
-
PHX
2 stops9h 10m
Southwest
Sat 2/287:00 am
PHX
-
BOI
1 stop4h 20m
Southwest
Deal found 2/1$178
This Southwest deal was found by Cheapflights users on 2/2. 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.
Wed 3/410:45 am
BOI
-
PHX
2 stops9h 10m
Southwest
Wed 3/119:35 am
PHX
-
BOI
Nonstop2h 15m
Southwest
Deal found 2/2$182
This Southwest deal was found by Cheapflights users on 2/1. 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 4/114:50 pm
BOI
-
PHX
Nonstop2h 05m
Southwest
Mon 4/139:55 pm
PHX
-
BOI
Nonstop2h 05m
Southwest
Deal found 2/1$184
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1511:56 am
BOI
-
PHX
1 stop12h 45m
Frontier
Sat 2/2110:51 pm
PHX
-
BOI
1 stop12h 20m
Frontier
Deal found 2/1$185
This Southwest deal was found by Cheapflights users on 2/1. 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 3/310:45 am
BOI
-
PHX
2 stops9h 10m
Southwest
Tue 3/106:10 am
PHX
-
BOI
1 stop4h 40m
Southwest
Deal found 2/1$192

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 February 3, 2026.

Round-trip from

$169
(Expedia)

One-way from

$74
(Southwest)

Popular in

March

Cheapest in

September

Average price

$291
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. 10% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 3, 2026.
Use the filters below to find and compare flights from Boise to Phoenix that are best for you.

Fly from

Boise

Fly to

Phoenix

Route

Depart

Return

Price

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Mon 3/23

5:25 am-6:35 am

Nonstop2h 10m

Phoenix Sky Harbor Intl

Sat 3/28

8:15 am-4:55 pm

1 stop7h 40m

$172

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Mon 3/16

6:13 pm-7:35 pm

Nonstop2h 22m

Phoenix Sky Harbor Intl

Mon 4/6

8:40 pm-11:58 pm

Nonstop2h 18m

$177

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Mon 3/2

3:20 pm-5:20 pm

Nonstop2h 00m

Phoenix Sky Harbor Intl

Thu 3/5

1:35 pm-3:40 pm

Nonstop2h 05m

$177

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Tue 3/24

4:30 pm-5:35 pm

Nonstop2h 05m

Phoenix Sky Harbor Intl

Sat 3/28

10:15 am-4:55 pm

1 stop5h 40m

$177

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sat 2/28

3:00 pm-5:05 pm

Nonstop2h 05m

Phoenix Sky Harbor Intl

Mon 3/2

7:20 am-1:15 pm

2 stops5h 55m

$178

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Wed 4/22

10:41 am-4:45 pm

1 stop7h 04m

Phoenix Sky Harbor Intl

Mon 4/27

11:45 am-7:55 pm

1 stop7h 10m

$187

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 3/5

6:10 pm-11:55 pm

1 stop5h 45m

Phoenix Sky Harbor Intl

Mon 3/9

10:50 pm-1:55 am

Nonstop2h 05m

$187

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Tue 3/3

10:45 am-7:55 pm

2 stops9h 10m

Phoenix Sky Harbor Intl

Tue 3/10

11:35 am-6:30 pm

1 stop5h 55m

$192

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Mon 4/13

3:44 pm-11:15 pm

1 stop8h 31m

Phoenix Sky Harbor Intl

Thu 4/16

6:05 am-12:02 pm

1 stop4h 57m

$197

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Fri 4/24

3:44 pm-11:15 pm

1 stop8h 31m

Phoenix Sky Harbor Intl

Mon 4/27

3:50 pm-10:24 pm

1 stop5h 34m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 21 results
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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 January 30, 2026.

To ensure you get the cheapest price possible for a flight from Boise to Phoenix, you should look to book at least 81 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 February 3, 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 34% versus a flight in the evening.

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 February 3, 2026.

The most flights from BOI to PH1 are scheduled on a Friday (14 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 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 February 3, 2026.
See what other customers who have flown with Alaska Airlines, Southwest, and Hawaiian 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.
Alaska Airlines
8.0
Very good
11,831 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,831 reviews
Alaska Airlines
8.0
Very good
11,831 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,273 reviews
Alaska Airlines
8.0
Very good
11,831 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Hawaiian Airlines
7.8
Good
2,830 reviews
Alaska Airlines
8.0
Very good
11,831 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,212 reviews
Alaska Airlines
8.0
Very good
11,831 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Allegiant Air
7.2
Good
708 reviews
Alaska Airlines
8.0
Very good
11,831 reviews

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 8 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 $172, Southwest can have you in Phoenix from Boise in 2h 10m. The distance between Boise and Phoenix is about 736 mi. Most flights are nonstop.

  • 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 ($55), Southwest ($76), and Alaska Airlines ($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: Porter Airlines (93%), Alaska Airlines (86%), SkyWest Airlines( 83%).

  • What are the cheapest flights from Boise to Phoenix?

    Looking for the cheapest flight from Boise to Phoenix? While on average our users pay $680, our data indicates the cheapest price to be $88. The most popular route (Boise Air Term. Gowen Fld - Phoenix Sky Harbor Intl), is priced around $145.

  • 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$82Average$174FlexibilityNo cancel feeOn-time88%
DeltaCheapest$88Average$197FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$88Average$236FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$157Average$298FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$157Average$270FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$158Average$286FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$183Average$294FlexibilityNo cancel feeOn-time69%

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