Southwest® flights from Denver to Harlingen/South Padre Island from $104

Promo Code

Low fares from Denver to Harlingen/South Padre Island

$

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 12/31/2026

One-way

Basic

From
$104
Seen: 14 hrs ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 11/11/2026

One-way

Basic

From
$104
Seen: 15 hrs ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 11/10/2026

One-way

Basic

From
$104
Seen: 19 hrs ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 11/17/2026

One-way

Basic

From
$104
Seen: 12 hrs ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 12/10/2026

One-way

Basic

From
$104
Seen: 8 hrs ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 11/14/2026

One-way

Basic

From
$104
Seen: 2 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 Denver to Harlingen/South Padre Island

Oct 2026
From$208*
Seen: 9 hrs ago
One Way/Basic
Nov 2026
From$104*
Seen: 12 hrs ago
One Way/Basic
Dec 2026
From$104*
Seen: 8 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $104
cmp-daily-histogram-bars-legend-max-price-aria-label $265
Displaying fares for October-2026
  • DEN–HRL, 10/21/2026: From $208
    21

    Wed

    OCT

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

    Thu

  • DEN–HRL, 10/23/2026: From $252
    23

    Fri

  • DEN–HRL, 10/24/2026: From $208
    24

    Sat

  • DEN–HRL, 10/25/2026: From $265
    25

    Sun

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

    Mon

  • DEN–HRL, 10/27/2026: From $208
    27

    Tue

  • DEN–HRL, 10/28/2026: From $208
    28

    Wed

  • DEN–HRL, 10/29/2026: From $245
    29

    Thu

  • DEN–HRL, 10/30/2026: From $245
    30

    Fri

  • DEN–HRL, 10/31/2026: From $208
    31

    Sat

  • DEN–HRL, 11/01/2026: From $245
    01

    Sun

    NOV

  • DEN–HRL, 11/02/2026: From $245
    02

    Mon

  • DEN–HRL, 11/03/2026: From $200
    03

    Tue

  • DEN–HRL, 11/04/2026: From $200
    04

    Wed

  • DEN–HRL, 11/05/2026: From $200
    05

    Thu

  • DEN–HRL, 11/06/2026: From $200
    06

    Fri

  • DEN–HRL, 11/07/2026: From $200
    07

    Sat

  • DEN–HRL, 11/08/2026: From $210
    08

    Sun

  • DEN–HRL, 11/09/2026: From $200
    09

    Mon

  • DEN–HRL, 11/10/2026: From $104
    10

    Tue

  • DEN–HRL, 11/11/2026: From $104
    11

    Wed

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

    Thu

  • DEN–HRL, 11/13/2026: From $106
    13

    Fri

  • DEN–HRL, 11/14/2026: From $104
    14

    Sat

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

    Sun

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

    Mon

  • DEN–HRL, 11/17/2026: From $104
    17

    Tue

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

    Wed

  • DEN–HRL: cmp-view-offers-disclaimer. Find Offers
    19

    Thu

  • DEN–HRL, 11/20/2026: From $258
    20

    Fri

    • Range$104-$265

    *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:
    Valley International Airport
    Distance:
    1023 miles

    Questions we hear the most

    There are 97 weekly flights from Denver to Harlingen/South Padre Island on Southwest Airlines.
    To find the lowest fares by day and time to fly Denver to Harlingen/South Padre Island with Southwest, check out our Low Fare Calendar.
    You can rent a car at Valley International Airport book yours with your flight.
    Yes! Flights from Denver to Harlingen/South Padre Island—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 Denver