Flights from Denver, CO to Boise, ID

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Best Deals on Flights From Denver, CO (DEN) to Boise, ID (BOI)

Try alternate month or interact with individual days below in order to find offers.
Aug 2026
No results for this month.
Sep 2026
from$88*
Last seen: 17 hours ago
One-way/Economy
Oct 2026
from$108*
Last seen: 4 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $88
cmp-daily-histogram-bars-legend-max-price-aria-label $287
Displaying fares for August-2026
  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

    AUG

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    31

    Mon

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    01

    Tue

    SEP

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    02

    Wed

  • DEN–BOI, Sep 3, 2026: from $207
    03

    Thu

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    04

    Fri

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    05

    Sat

  • DEN–BOI, Sep 6, 2026: from $175
    06

    Sun

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    07

    Mon

  • DEN–BOI, Sep 8, 2026: from $103
    08

    Tue

  • DEN–BOI, Sep 9, 2026: from $155
    09

    Wed

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

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    11

    Fri

  • DEN–BOI, Sep 12, 2026: from $135
    12

    Sat

  • DEN–BOI, Sep 13, 2026: from $129
    13

    Sun

  • DEN–BOI, Sep 14, 2026: from $159
    14

    Mon

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    15

    Tue

  • DEN–BOI, Sep 16, 2026: from $116
    16

    Wed

  • DEN–BOI, Sep 17, 2026: from $129
    17

    Thu

  • DEN–BOI, Sep 18, 2026: from $129
    18

    Fri

  • DEN–BOI, Sep 19, 2026: from $287
    19

    Sat

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

  • DEN–BOI, Sep 21, 2026: from $88
    21

    Mon

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    22

    Tue

  • DEN–BOI, Sep 23, 2026: from $94
    23

    Wed

  • DEN–BOI, Sep 24, 2026: from $88
    24

    Thu

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    25

    Fri

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    26

    Sat

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    27

    Sun

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    28

    Mon

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

    • Range$88-$287

    *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 Denver, CO to Boise, ID on Frontier

    $
    Flights Deals from Denver, CO to Boise, ID on Frontier
    From
    To
    Denver, CO (DEN)Boise, ID (BOI)One-way
    /
    Discount Den Basic Fare    		Departing Dec 26, 2026

    From

    $219

    Last seen: 18 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®.

    Denver, CO Boise, ID

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