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Cheap flights from Boise to Phoenix from $66

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boise to Phoenix departing on 2/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Boise to Phoenix

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
4:00 pm - 10:20 pm
BOI
-
PHX
6h 20m
1 stop
Southwest Logo
9:00 am - 11:10 am
PHX
-
BOI
2h 10mnonstop
$167Southwest
Wed, Feb 25 - Wed, Mar 4
Southwest Logo
10:55 am - 8:00 pm
BOI
-
PHX
9h 05m
1 stop
Southwest Logo
6:00 am - 10:40 am
PHX
-
BOI
4h 40m
1 stop
$170Southwest
Sat, Feb 21 - Wed, Feb 25
Frontier Logo
11:56 am - 8:12 am
BOI
-
PHX
20h 16m
1 stop
Frontier Logo
6:51 pm - 11:51 am
PHX
-
BOI
17h 00m
1 stop
$171Frontier
Sun, Feb 15 - Wed, Feb 18
Southwest Logo
10:45 am - 7:55 pm
BOI
-
PHX
9h 10m
2 stops
Southwest Logo
9:00 am - 11:10 am
PHX
-
BOI
2h 10mnonstop
$172Southwest
Tue, Feb 24 - Tue, Mar 3
Frontier Logo
12:36 pm - 12:41 am
BOI
-
PHX
12h 05m
1 stop
Frontier Logo
6:00 am - 11:51 am
PHX
-
BOI
5h 51m
1 stop
$175Frontier
Thu, Feb 19 - Thu, Feb 26
Frontier Logo
12:36 pm - 12:41 am
BOI
-
PHX
12h 05m
1 stop
Frontier Logo
6:51 pm - 11:51 am
PHX
-
BOI
17h 00m
1 stop
$176Frontier
Thu, Feb 19 - Wed, Feb 25
American Airlines Logo
6:38 am - 8:04 am
BOI
-
PHX
2h 26mnonstop
American Airlines Logo
8:20 pm - 11:38 pm
PHX
-
BOI
2h 18mnonstop
$177American Airlines
Sun, Mar 8 - Thu, Mar 12
Southwest Logo
10:45 am - 7:55 pm
BOI
-
PHX
9h 10m
2 stops
Southwest Logo
6:45 am - 2:20 pm
PHX
-
BOI
7h 35m
1 stop
$182Southwest
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
6:38 am - 9:04 am
BOI
-
PHX
2h 26mnonstop
American Airlines Logo
9:20 pm - 11:38 pm
PHX
-
BOI
2h 18mnonstop
$183American Airlines
Sun, Mar 1 - Wed, Mar 4
Southwest Logo
7:05 pm - 10:50 pm
BOI
-
PHX
3h 45m
1 stop
Southwest Logo
6:40 am - 12:15 pm
PHX
-
BOI
5h 35m
1 stop
$184Southwest
Tue, Feb 17 - Sat, Feb 21

Southwest flights from Boise to Phoenix Sky Harbor Intl Airport

Our best Southwest deals on Boise to Phoenix Sky Harbor Intl Airport flight tickets
Southwest
Feb 25
BOI4:00 pmBoise Air Term. Gowen Fld
6h 20m
1 stop
PHX10:20 pmPhoenix Sky Harbor Intl
Mar 4
PHX9:00 amPhoenix Sky Harbor Intl
2h 10m
BOI11:10 amBoise Air Term. Gowen Fld
$167
Southwest
Feb 21
BOI10:55 amBoise Air Term. Gowen Fld
9h 05m
1 stop
PHX8:00 pmPhoenix Sky Harbor Intl
Feb 25
PHX6:00 amPhoenix Sky Harbor Intl
4h 40m
1 stop
BOI10:40 amBoise Air Term. Gowen Fld
$170
Southwest
Feb 24
BOI10:45 amBoise Air Term. Gowen Fld
9h 10m
2 stops
PHX7:55 pmPhoenix Sky Harbor Intl
Mar 3
PHX9:00 amPhoenix Sky Harbor Intl
2h 10m
BOI11:10 amBoise Air Term. Gowen Fld
$172

American Airlines flights from Boise to Phoenix Sky Harbor Intl Airport

Our best American Airlines deals on Boise to Phoenix Sky Harbor Intl Airport flight tickets
American Airlines
Mar 8
BOI6:38 amBoise Air Term. Gowen Fld
2h 26m
PHX8:04 amPhoenix Sky Harbor Intl
Mar 12
PHX8:20 pmPhoenix Sky Harbor Intl
2h 18m
BOI11:38 pmBoise Air Term. Gowen Fld
$177
American Airlines
Mar 1
BOI6:38 amBoise Air Term. Gowen Fld
2h 26m
PHX9:04 amPhoenix Sky Harbor Intl
Mar 4
PHX9:20 pmPhoenix Sky Harbor Intl
2h 18m
BOI11:38 pmBoise Air Term. Gowen Fld
$183
American Airlines
May 2
BOI6:26 pmBoise Air Term. Gowen Fld
2h 15m
PHX7:41 pmPhoenix Sky Harbor Intl
May 9
PHX2:35 pmPhoenix Sky Harbor Intl
2h 18m
BOI5:53 pmBoise Air Term. Gowen Fld
$189

momondo Fare Finder

 
Customize your flight search to find flights from Boise to Phoenix Sky Harbor Intl Airport 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, momondo users made 832,500 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from Boise to Phoenix Sky Harbor Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Wed 2/25

4:00 pm-10:20 pm

1 stop6h 20m

Phoenix Sky Harbor Intl

Wed 3/4

9:00 am-11:10 am

Nonstop2h 10m

$167

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sat 2/21

10:55 am-8:00 pm

1 stop9h 05m

Phoenix Sky Harbor Intl

Wed 2/25

6:00 am-10:40 am

1 stop4h 40m

$170

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sun 2/15

11:56 am-8:12 am

1 stop20h 16m

Phoenix Sky Harbor Intl

Wed 2/18

6:51 pm-11:51 am

1 stop17h 00m

$171

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Tue 2/24

10:45 am-7:55 pm

2 stops9h 10m

Phoenix Sky Harbor Intl

Tue 3/3

9:00 am-11:10 am

Nonstop2h 10m

$172

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 2/19

12:36 pm-12:41 am

1 stop12h 05m

Phoenix Sky Harbor Intl

Thu 2/26

6:00 am-11:51 am

1 stop5h 51m

$175

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Thu 2/19

12:36 pm-12:41 am

1 stop12h 05m

Phoenix Sky Harbor Intl

Wed 2/25

6:51 pm-11:51 am

1 stop17h 00m

$176

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sun 3/8

6:38 am-8:04 am

Nonstop2h 26m

Phoenix Sky Harbor Intl

Thu 3/12

8:20 pm-11:38 pm

Nonstop2h 18m

$177

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Tue 2/24

10:45 am-7:55 pm

2 stops9h 10m

Phoenix Sky Harbor Intl

Tue 3/3

6:45 am-2:20 pm

1 stop7h 35m

$182

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Sun 3/1

6:38 am-9:04 am

Nonstop2h 26m

Phoenix Sky Harbor Intl

Wed 3/4

9:20 pm-11:38 pm

Nonstop2h 18m

$183

BoisePhoenix

BOI - PHX

BOIPHX

Boise Air Term. Gowen Fld

Tue 2/17

7:05 pm-10:50 pm

1 stop3h 45m

Phoenix Sky Harbor Intl

Sat 2/21

6:40 am-12:15 pm

1 stop5h 35m

$184

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Phoenix from

How to get the cheapest flight ticket from Boise to Phoenix Sky Harbor Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Phoenix Sky Harbor Intl Airport?

In general, September is the cheapest month to fly from Boise to Phoenix Sky Harbor Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $207. If you are unable to visit Phoenix Sky Harbor Intl Airport during the month of September, then departing from Boise during the month August is also very affordable. Most momondo users find prices during this month for around $217.

What is the cheapest day to depart on your flight to Phoenix Sky Harbor Intl Airport?

On average, the least expensive day to fly to Phoenix Sky Harbor Intl Airport from Boise is on a Thursday. momondo users have found tickets for Thursday departures for as low as $341. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $459. These prices are subject to change though, so be sure to set up a Price Alert for flights to Phoenix Sky Harbor Intl Airport.

What is the cheapest time of day to depart on your flight to Phoenix Sky Harbor Intl Airport?

In the evening is the cheapest time of day to fly from Boise to Phoenix Sky Harbor Intl Airport when you can find flight prices for as low as $142. Flying to Phoenix Sky Harbor Intl Airport in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $400. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Boise Air Term. Gowen Fld to Phoenix Sky Harbor Intl flight route?

Fly from Boise Air Term. Gowen Fld to Phoenix Sky Harbor Intl for the best Boise Air Term. Gowen Fld - Phoenix Sky Harbor Intl flight prices

How far in advance should I book a flight to Phoenix Sky Harbor Intl Airport?

You are more likely to see cheaper flights to Phoenix Sky Harbor Intl Airport from Boise when booking weeks ahead of your departure date. In general, you can expect to find flights to Phoenix Sky Harbor Intl Airport for around $268 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phoenix Sky Harbor Intl Airport from Boise for as low as $235 on momondo.

What cabin class options are available on Boise Air Term. Gowen Fld to Phoenix Sky Harbor Intl flights?

There are 4 cabin classes available to choose from on Boise Air Term. Gowen Fld to Phoenix Sky Harbor Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boise to Phoenix Sky Harbor Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Boise to Phoenix Sky Harbor Intl Airport.

How have Boise to Phoenix Sky Harbor Intl Airport flight prices changed over time?

As of January 2026, prices for Boise to Phoenix Sky Harbor Intl Airport flights are approximately 28% more expensive when compared to flights at the same time last year.

When to book flights from Boise to Phoenix Sky Harbor Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Boise to Phoenix Sky Harbor Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boise to Phoenix Sky Harbor Intl Airport (BOI to PHX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boise to Phoenix Sky Harbor Intl Airport

Best Price Found

$165

Fastest flight time

2h 05m

Direct flights

Every day
The best one-way flight to Phoenix Sky Harbor Intl Airport from Boise in the past 72 hours is $165. The best round-trip flight deal from Boise to Phoenix Sky Harbor Intl Airport found on momondo in the last 72 hours is $271.
The fastest flight from Boise to Phoenix Sky Harbor Intl Airport takes 2h 05m
Direct flights go from Boise to Phoenix Sky Harbor Intl Airport every day.
Search flight deals

  • How far is Boise Air Term. Gowen Fld to Phoenix Sky Harbor Intl by plane?

    A flight from Boise Air Term. Gowen Fld to Phoenix Sky Harbor Intl will travel around 738.3 mi. 2h 05m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to Phoenix Sky Harbor Intl Airport?

    Prices for flights from Boise Air Term. Gowen Fld Airport to Phoenix Sky Harbor Intl Airport are updated daily.

  • How many operators does momondo search for flights from Boise Air Term. Gowen Fld Airport to Phoenix Sky Harbor Intl Airport?

  • How old do you have to be to fly from Boise Air Term. Gowen Fld Airport to Phoenix Sky Harbor Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boise Air Term. Gowen Fld Airport to Phoenix Sky Harbor Intl Airport.

  • What documentation or ID do you need to fly to Phoenix Sky Harbor Intl Airport?

    The required travel and health documents for your Phoenix Sky Harbor Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Phoenix Sky Harbor Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Boise to Phoenix Sky Harbor Intl Airport?

  • What is the most popular airline from Boise to Phoenix Sky Harbor Intl Airport?

Best airlines flying from Boise to Phoenix Sky Harbor Intl Airport

Compare and see reviews for airlines that fly from Boise to Phoenix Sky Harbor Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $82Free CancellationRating
7.2
706 reviews
Search Allegiant Air flights
DeltaPriceFrom $88Free CancellationRating
7.9
8,123 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $88Free CancellationRating
7.8
2,829 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $157Free CancellationRating
8.0
11,799 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $157Free CancellationRating
8.0
4,268 reviews
Search Southwest flights
American AirlinesPriceFrom $159Free CancellationRating
7.2
11,201 reviews
Search American Airlines flights
United AirlinesPriceFrom $183Free CancellationRating
7.4
9,208 reviews
Search United Airlines flights

  • Alaska Airlines Flights From Boise to Phoenix Sky Harbor Intl Airport

    Alaska Airlines flight deals from Boise to Phoenix Sky Harbor Intl Airport start from $157 round-trip. Over the 6 Alaska Airlines flights for this route in a normal week, average airfare is usually $300 round-trip - but some users have found much cheaper deals with momondo.

  • Southwest Flights From Boise to Phoenix Sky Harbor Intl Airport

    $157 is the best Southwest flight deal from Boise to Phoenix Sky Harbor Intl Airport found on momondo over the last 72 hours. The average Southwest ticket price found was closer to $273, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,268 user reviews) flies into Phoenix Sky Harbor Intl Airport from Boise 10 times in an average week so prices can vary.

Traveling to a place near Phoenix?

Book flights to Phoenix if you plan to visit one of these locations
Scottsdale
Mesa
Tempe
Chandler
Glendale
Gilbert
Peoria
Casa Grande
Surprise
Goodyear
Buckeye
Payson
Apache Junction
Paradise Valley
Avondale
Wickenburg
Camp Verde
Guadalupe
Litchfield Park
Fountain Hills

Why use momondo?

Why should I use momondo to find a flight deal from Boise to Phoenix?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Phoenix from Boise.

Can I find flights from Boise to Phoenix with flexible booking policies on momondo?

Flights from Boise to Phoenix with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boise to Phoenix?

momondo helps you find the best flight between Boise and Phoenix by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boise to Phoenix right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Phoenix, momondo offers a useful price alert feature which will track prices for flights to Phoenix from Boise and alert you when they change.

An easier way to manage your Phoenix Sky Harbor Intl Airport trip

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