Southwest® flights from Washington, D.C. (Reagan National) to Denver from $136

Promo Code

Low fares from Washington, D.C. (Reagan National) to Denver

$

Washington, D.C. (Reagan National) (DCA)to

Denver (DEN)
Depart: 09/29/2026

One-way

Basic

From
$136
Seen: 4 hrs ago

Washington, D.C. (Reagan National) (DCA)to

Denver (DEN)
Depart: 10/26/2026

One-way

Basic

From
$165
Seen: 19 hrs ago

Washington, D.C. (Reagan National) (DCA)to

Denver (DEN)
Depart: 11/06/2026

One-way

Basic

From
$165
Seen: 22 hrs ago

Washington, D.C. (Reagan National) (DCA)to

Denver (DEN)
Depart: 11/13/2026

One-way

Basic

From
$165
Seen: 21 hrs ago

Washington, D.C. (Reagan National) (DCA)to

Denver (DEN)
Depart: 11/05/2026

One-way

Basic

From
$165
Seen: 21 hrs ago

Washington, D.C. (Reagan National) (DCA)to

Denver (DEN)
Depart: 10/29/2026

One-way

Basic

From
$165
Seen: 22 hrs ago

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Explore flights from Washington, D.C. (Reagan National) to Denver

Aug 2026
From$250*
Seen: 13 hrs ago
One Way/Basic
Sep 2026
From$136*
Seen: 4 hrs ago
One Way/Basic
Oct 2026
From$165*
Seen: 8 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $165
cmp-daily-histogram-bars-legend-max-price-aria-label $315
Displaying fares for August-2026
  • DCA–DEN: cmp-view-offers-disclaimer. Find Offers
    21

    Fri

    AUG

  • DCA–DEN, 08/22/2026: From $310
    22

    Sat

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

    Sun

  • DCA–DEN, 08/24/2026: From $315
    24

    Mon

  • DCA–DEN, 08/25/2026: From $310
    25

    Tue

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

    Wed

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

    Thu

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

    Fri

  • DCA–DEN, 08/29/2026: From $250
    29

    Sat

  • DCA–DEN: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

  • DCA–DEN, 08/31/2026: From $255
    31

    Mon

  • DCA–DEN, 09/01/2026: From $250
    01

    Tue

    SEP

  • DCA–DEN, 09/02/2026: From $250
    02

    Wed

  • DCA–DEN, 09/03/2026: From $304
    03

    Thu

  • DCA–DEN, 09/04/2026: From $304
    04

    Fri

  • DCA–DEN, 09/05/2026: From $200
    05

    Sat

  • DCA–DEN, 09/06/2026: From $244
    06

    Sun

  • DCA–DEN: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • DCA–DEN, 09/08/2026: From $200
    08

    Tue

  • DCA–DEN, 09/09/2026: From $200
    09

    Wed

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

    Thu

  • DCA–DEN, 09/11/2026: From $170
    11

    Fri

  • DCA–DEN, 09/12/2026: From $170
    12

    Sat

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

    Sun

  • DCA–DEN, 09/14/2026: From $170
    14

    Mon

  • DCA–DEN, 09/15/2026: From $165
    15

    Tue

  • DCA–DEN, 09/16/2026: From $170
    16

    Wed

  • DCA–DEN, 09/17/2026: From $249
    17

    Thu

  • DCA–DEN, 09/18/2026: From $221
    18

    Fri

  • DCA–DEN, 09/19/2026: From $170
    19

    Sat

  • DCA–DEN, 09/20/2026: From $200
    20

    Sun

    • Range$165-$315

    *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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