Flights from Boise, ID to Phoenix, AZ

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Best Deals on Flights From Boise, ID (BOI) to Phoenix, AZ (PHX)

Sep 2026
from$173*
Last seen: 23 hours ago
One-way/Economy
Oct 2026
from$61*
Last seen: 16 hours ago
One-way/Economy
Nov 2026
No results for this month.
cmp-daily-histogram-bars-legend-min-price-aria-label $149
Displaying fares for September-2026
  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    19

    Sat

    SEP

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  • BOI–PHX, Sep 27, 2026: from $173
    27

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  • BOI–PHX, Sep 28, 2026: from $173
    28

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    29

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    OCT

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  • BOI–PHX, Oct 4, 2026: from $149
    04

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  • BOI–PHX, Oct 5, 2026: from $149
    05

    Mon

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    11

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  • BOI–PHX, Oct 15, 2026: from $166
    15

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    16

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    18

    Sun

    • Range$149-$173

    *Prices found by others in the previous 48 hours for round-trip flights. Prices shown may also require membership in our travel club, Discount Den.

    Flights Deals from Boise, ID to Phoenix, AZ on Frontier

    $
    Flights Deals from Boise, ID to Phoenix, AZ on Frontier
    From
    To
    Boise, ID (BOI)Phoenix, AZ (PHX)One-way
    /
    Discount Den Basic Fare    		Departing Jan 8, 2027

    From

    $139

    Last seen: 19 hours ago

    *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den®.

    Boise, ID Phoenix, AZ

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