Southwest® flights from Boston to Denver from $104

Promo Code

Low fares from Boston to Denver

$

Boston (BOS)to

Denver (DEN)
Depart: 10/27/2026

One-way

Basic

From
$104
Seen: 11 hrs ago

Boston (BOS)to

Denver (DEN)
Depart: 10/28/2026

One-way

Basic

From
$104
Seen: 11 hrs ago

Boston (BOS)to

Denver (DEN)
Depart: 08/31/2026

One-way

Basic

From
$104
Seen: 10 hrs ago

Boston (BOS)to

Denver (DEN)
Depart: 10/03/2026

One-way

Basic

From
$104
Seen: 3 hrs ago

Boston (BOS)to

Denver (DEN)
Depart: 10/29/2026

One-way

Basic

From
$104
Seen: 17 hrs ago

Boston (BOS)to

Denver (DEN)
Depart: 08/29/2026

One-way

Basic

From
$104
Seen: 6 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Boston to Denver

Try alternate month or interact with individual days below in order to find offers.
Jul 2026
No result for this month.
Aug 2026
From$104*
Seen: 10 hrs ago
One Way/Basic
Sep 2026
From$104*
Seen: 16 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $104
cmp-daily-histogram-bars-legend-max-price-aria-label $408
Displaying fares for July-2026
  • BOS–DEN: cmp-view-offers-disclaimer. Find Offers
    31

    Fri

    JUL

  • BOS–DEN, 08/01/2026: From $293
    01

    Sat

  • BOS–DEN, 08/02/2026: From $293
    02

    Sun

  • BOS–DEN, 08/03/2026: From $303
    03

    Mon

  • BOS–DEN, 08/04/2026: From $293
    04

    Tue

  • BOS–DEN, 08/05/2026: From $303
    05

    Wed

  • BOS–DEN, 08/06/2026: From $303
    06

    Thu

  • BOS–DEN, 08/07/2026: From $334
    07

    Fri

  • BOS–DEN, 08/08/2026: From $408
    08

    Sat

  • BOS–DEN, 08/09/2026: From $334
    09

    Sun

  • BOS–DEN, 08/10/2026: From $303
    10

    Mon

  • BOS–DEN, 08/11/2026: From $269
    11

    Tue

  • BOS–DEN, 08/12/2026: From $177
    12

    Wed

  • BOS–DEN, 08/13/2026: From $269
    13

    Thu

  • BOS–DEN, 08/14/2026: From $194
    14

    Fri

  • BOS–DEN, 08/15/2026: From $159
    15

    Sat

  • BOS–DEN, 08/16/2026: From $234
    16

    Sun

  • BOS–DEN, 08/17/2026: From $146
    17

    Mon

  • BOS–DEN, 08/18/2026: From $154
    18

    Tue

  • BOS–DEN, 08/19/2026: From $139
    19

    Wed

  • BOS–DEN, 08/20/2026: From $104
    20

    Thu

  • BOS–DEN, 08/21/2026: From $113
    21

    Fri

  • BOS–DEN, 08/22/2026: From $113
    22

    Sat

  • BOS–DEN, 08/23/2026: From $144
    23

    Sun

  • BOS–DEN, 08/24/2026: From $119
    24

    Mon

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

    Tue

  • BOS–DEN, 08/26/2026: From $104
    26

    Wed

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

    Thu

  • BOS–DEN, 08/28/2026: From $113
    28

    Fri

  • BOS–DEN, 08/29/2026: From $104
    29

    Sat

  • BOS–DEN, 08/30/2026: From $144
    30

    Sun

    • Range$104-$408

    *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:
    Logan International Airport
    Arriving at:
    Denver International Airport
    Average flight time:
    4 hours 41 minutes
    Distance:
    1754 miles

    Route Information

    156† Weekly flights
    • 3‡ Nonstop flights per day Monday through Friday
    • 2‡ 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 Boston to Denver is 4 hours 41 minutes.
    There are 156 weekly flights from Boston to Denver on Southwest Airlines.
    Yes, Southwest flies nonstop from Boston to Denver 3 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Boston to Denver 2 times per day on Saturdays and 3 times per day on Sundays.
    To find the lowest fares by day and time to fly Boston 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 Boston 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.

    Explore Flights from Other Popular Origins

    Popular Flights from Boston