Southwest® flights from Washington D.C. Reagan National to Denver from $185

Promo Code

Low fares from Washington D.C. Reagan National to Denver

$

Washington D.C. Reagan National (DCA)to

Denver (DEN)
Depart: 12/03/2026

One-way

Basic

From
$185
Seen: 19 hrs ago

Washington D.C. Reagan National (DCA)to

Denver (DEN)
Depart: 12/09/2026

One-way

Basic

From
$185
Seen: 22 hrs ago

Washington D.C. Reagan National (DCA)to

Denver (DEN)
Depart: 11/13/2026

One-way

Basic

From
$185
Seen: 21 hrs ago

Washington D.C. Reagan National (DCA)to

Denver (DEN)
Depart: 11/11/2026

One-way

Basic

From
$185
Seen: 20 hrs ago

Washington D.C. Reagan National (DCA)to

Denver (DEN)
Depart: 12/10/2026

One-way

Basic

From
$185
Seen: 21 hrs ago

Washington D.C. Reagan National (DCA)to

Denver (DEN)
Depart: 10/30/2026

One-way

Basic

From
$185
Seen: 11 hrs ago

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Explore flights from Washington D.C. Reagan National to Denver

Try alternate month or interact with individual days below in order to find offers.
Sep 2026
No result for this month.
Oct 2026
From$185*
Seen: 21 hrs ago
One Way/Basic
Nov 2026
From$185*
Seen: 20 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $185
cmp-daily-histogram-bars-legend-max-price-aria-label $425
Displaying fares for September-2026
  • DCA–DEN: cmp-view-offers-disclaimer. Find Offers
    30

    Wed

    SEP

  • DCA–DEN, 10/01/2026: From $425
    01

    Thu

  • DCA–DEN, 10/02/2026: From $330
    02

    Fri

  • DCA–DEN: cmp-view-offers-disclaimer. Find Offers
    03

    Sat

  • DCA–DEN, 10/04/2026: From $335
    04

    Sun

  • DCA–DEN, 10/05/2026: From $330
    05

    Mon

  • DCA–DEN, 10/06/2026: From $270
    06

    Tue

  • DCA–DEN, 10/07/2026: From $275
    07

    Wed

  • DCA–DEN, 10/08/2026: From $330
    08

    Thu

  • DCA–DEN, 10/09/2026: From $319
    09

    Fri

  • DCA–DEN, 10/10/2026: From $275
    10

    Sat

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

    Sun

  • DCA–DEN: cmp-view-offers-disclaimer. Find Offers
    12

    Mon

  • DCA–DEN, 10/13/2026: From $220
    13

    Tue

  • DCA–DEN, 10/14/2026: From $220
    14

    Wed

  • DCA–DEN, 10/15/2026: From $264
    15

    Thu

  • DCA–DEN, 10/16/2026: From $215
    16

    Fri

  • DCA–DEN: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

  • DCA–DEN, 10/18/2026: From $324
    18

    Sun

  • DCA–DEN, 10/19/2026: From $220
    19

    Mon

  • DCA–DEN, 10/20/2026: From $190
    20

    Tue

  • DCA–DEN, 10/21/2026: From $190
    21

    Wed

  • DCA–DEN, 10/22/2026: From $215
    22

    Thu

  • DCA–DEN, 10/23/2026: From $185
    23

    Fri

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

    Sat

  • DCA–DEN, 10/25/2026: From $190
    25

    Sun

  • DCA–DEN, 10/26/2026: From $220
    26

    Mon

  • DCA–DEN, 10/27/2026: From $185
    27

    Tue

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

    Wed

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

    Thu

    • Range$185-$425

    *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:
    Ronald Reagan National Airport
    Arriving at:
    Denver International Airport
    Distance:
    1476 miles

    Route Information

    156† Weekly flights

    † 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

    There are 156 weekly flights from Washington, D.C. (Reagan National) to Denver on Southwest Airlines.
    To find the lowest fares by day and time to fly Washington, D.C. (Reagan National) 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 Washington, D.C. (Reagan National) 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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