Southwest® flights from Denver to Boise from $99

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Low fares from Denver to Boise

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Denver (DEN)to

Boise (BOI)
Depart: 10/06/2026

One-way

Basic

From
$99
Seen: 13 hrs ago

Denver (DEN)to

Boise (BOI)
Depart: 11/12/2026

One-way

Basic

From
$99
Seen: 2 hrs ago

Denver (DEN)to

Boise (BOI)
Depart: 10/17/2026

One-way

Basic

From
$99
Seen: 10 hrs ago

Denver (DEN)to

Boise (BOI)
Depart: 10/24/2026

One-way

Basic

From
$99
Seen: 10 hrs ago

Denver (DEN)to

Boise (BOI)
Depart: 11/10/2026

One-way

Basic

From
$99
Seen: 11 hrs ago

Denver (DEN)to

Boise (BOI)
Depart: 09/30/2026

One-way

Basic

From
$99
Seen: 14 hrs ago

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Explore flights from Denver to Boise

Sep 2026
From$99*
Seen: 14 hrs ago
One Way/Basic
Oct 2026
From$99*
Seen: 10 hrs ago
One Way/Basic
Nov 2026
From$99*
Seen: 11 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $99
cmp-daily-histogram-bars-legend-max-price-aria-label $416
Displaying fares for September-2026
  • DEN–BOI, 09/03/2026: From $406
    03

    Thu

    SEP

  • DEN–BOI, 09/04/2026: From $406
    04

    Fri

  • DEN–BOI, 09/05/2026: From $406
    05

    Sat

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • DEN–BOI, 09/07/2026: From $416
    07

    Mon

  • DEN–BOI, 09/08/2026: From $406
    08

    Tue

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • DEN–BOI, 09/10/2026: From $331
    10

    Thu

  • DEN–BOI, 09/11/2026: From $341
    11

    Fri

  • DEN–BOI, 09/12/2026: From $331
    12

    Sat

  • DEN–BOI, 09/13/2026: From $331
    13

    Sun

  • DEN–BOI, 09/14/2026: From $331
    14

    Mon

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

    Tue

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    16

    Wed

  • DEN–BOI, 09/17/2026: From $211
    17

    Thu

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    18

    Fri

  • DEN–BOI, 09/19/2026: From $211
    19

    Sat

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

    Sun

  • DEN–BOI, 09/21/2026: From $221
    21

    Mon

  • DEN–BOI, 09/22/2026: From $211
    22

    Tue

  • DEN–BOI, 09/23/2026: From $99
    23

    Wed

  • DEN–BOI: cmp-view-offers-disclaimer. Find Offers
    24

    Thu

  • DEN–BOI, 09/25/2026: From $145
    25

    Fri

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

    Sat

  • DEN–BOI, 09/27/2026: From $214
    27

    Sun

  • DEN–BOI, 09/28/2026: From $184
    28

    Mon

  • DEN–BOI, 09/29/2026: From $109
    29

    Tue

  • DEN–BOI, 09/30/2026: From $99
    30

    Wed

  • DEN–BOI, 10/01/2026: From $201
    01

    Thu

    OCT

  • DEN–BOI, 10/02/2026: From $155
    02

    Fri

    • Range$99-$416

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Denver International Airport
    Arriving at:
    Boise Airport
    Average flight time:
    1 hour 56 minutes
    Distance:
    649 miles

    Route Information

    134† Weekly flights
    • 3‡ Nonstop flights per day Monday through Friday
    • 3‡ Nonstop flights on Saturday
    • 3‡ Nonstop flights on Sunday

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    The average flight time from Denver to Boise is 1 hour 56 minutes.
    There are 134 weekly flights from Denver to Boise on Southwest Airlines.
    Yes, Southwest flies nonstop from Denver to Boise 3 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Denver to Boise 3 times per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Denver to Boise with Southwest, check out our Low Fare Calendar.
    You can rent a car at Boise Airport book yours with your flight.
    Yes! Flights from Denver to Boise—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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