Southwest® flights from Boise to Denver from $99

Promo Code

Low fares from Boise to Denver

$

Boise (BOI)to

Denver (DEN)
Depart: 12/07/2026

One-way

Basic

From
$99
Seen: 18 hrs ago

Boise (BOI)to

Denver (DEN)
Depart: 11/02/2026

One-way

Basic

From
$99
Seen: 12 hrs ago

Boise (BOI)to

Denver (DEN)
Depart: 11/12/2026

One-way

Basic

From
$99
Seen: 15 hrs ago

Boise (BOI)to

Denver (DEN)
Depart: 12/03/2026

One-way

Basic

From
$99
Seen: 18 hrs ago

Boise (BOI)to

Denver (DEN)
Depart: 11/07/2026

One-way

Basic

From
$99
Seen: 16 hrs ago

Boise (BOI)to

Denver (DEN)
Depart: 11/03/2026

One-way

Basic

From
$99
Seen: 3 hrs ago

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Explore flights from Boise to Denver

Oct 2026
From$99*
Seen: 10 hrs ago
One Way/Basic
Nov 2026
From$99*
Seen: 3 hrs ago
One Way/Basic
Dec 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 October-2026
  • BOI–DEN, 10/01/2026: From $416
    01

    Thu

    OCT

  • BOI–DEN, 10/02/2026: From $416
    02

    Fri

  • BOI–DEN, 10/03/2026: From $416
    03

    Sat

  • BOI–DEN: cmp-view-offers-disclaimer. Find Offers
    04

    Sun

  • BOI–DEN, 10/05/2026: From $416
    05

    Mon

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

    Tue

  • BOI–DEN, 10/07/2026: From $341
    07

    Wed

  • BOI–DEN, 10/08/2026: From $341
    08

    Thu

  • BOI–DEN, 10/09/2026: From $341
    09

    Fri

  • BOI–DEN, 10/10/2026: From $341
    10

    Sat

  • BOI–DEN: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

  • BOI–DEN, 10/12/2026: From $341
    12

    Mon

  • BOI–DEN: cmp-view-offers-disclaimer. Find Offers
    13

    Tue

  • BOI–DEN, 10/14/2026: From $231
    14

    Wed

  • BOI–DEN, 10/15/2026: From $231
    15

    Thu

  • BOI–DEN, 10/16/2026: From $221
    16

    Fri

  • BOI–DEN, 10/17/2026: From $221
    17

    Sat

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

    Sun

  • BOI–DEN, 10/19/2026: From $221
    19

    Mon

  • BOI–DEN, 10/20/2026: From $99
    20

    Tue

  • BOI–DEN, 10/21/2026: From $99
    21

    Wed

  • BOI–DEN: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

  • BOI–DEN: cmp-view-offers-disclaimer. Find Offers
    23

    Fri

  • BOI–DEN, 10/24/2026: From $99
    24

    Sat

  • BOI–DEN, 10/25/2026: From $184
    25

    Sun

  • BOI–DEN, 10/26/2026: From $99
    26

    Mon

  • BOI–DEN, 10/27/2026: From $99
    27

    Tue

  • BOI–DEN, 10/28/2026: From $99
    28

    Wed

  • BOI–DEN, 10/29/2026: From $109
    29

    Thu

  • BOI–DEN, 10/30/2026: From $165
    30

    Fri

  • BOI–DEN: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

    • 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:
    Boise Airport
    Arriving at:
    Denver International Airport
    Average flight time:
    1 hour 48 minutes
    Distance:
    649 miles

    Route Information

    149† 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 Boise to Denver is 1 hour 48 minutes.
    There are 149 weekly flights from Boise to Denver on Southwest Airlines.
    Yes, Southwest flies nonstop from Boise to Denver 3 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Boise to Denver 3 times per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Boise to Denver with Southwest, check out our Low Fare Calendar.
    You can rent a car at Denver International Airport book yours with your flight.
    Yes! Flights from Boise to Denver—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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