Southwest® flights from Denver to Harlingen/South Padre Island from $105

Promo Code

Low fares from Denver to Harlingen/South Padre Island

$

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 08/21/2026

One-way

Basic

From
$105
Seen: 1 hour ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 09/01/2026

One-way

Basic

From
$105
Seen: 1 hour ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 09/10/2026

One-way

Basic

From
$105
Seen: 14 hrs ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 10/24/2026

One-way

Basic

From
$109
Seen: 22 hrs ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 09/10/2026

One-way

Choice

From
$150
Seen: 14 hrs ago

Denver (DEN)to

Harlingen/South Padre Island (HRL)
Depart: 08/21/2026

One-way

Choice

From
$150
Seen: 1 hour 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

Try alternate month or interact with individual days below in order to find offers.
Jul 2026
No result for this month.
Aug 2026
From$105*
Seen: 1 hour ago
One Way/Basic
Sep 2026
From$105*
Seen: 14 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $105
cmp-daily-histogram-bars-legend-max-price-aria-label $281
Displaying fares for July-2026
  • DEN–HRL: cmp-view-offers-disclaimer. Find Offers
    31

    Fri

    JUL

  • DEN–HRL, 08/01/2026: From $214
    01

    Sat

  • DEN–HRL, 08/02/2026: From $281
    02

    Sun

  • DEN–HRL, 08/03/2026: From $232
    03

    Mon

  • DEN–HRL, 08/04/2026: From $203
    04

    Tue

  • DEN–HRL, 08/05/2026: From $219
    05

    Wed

  • DEN–HRL, 08/06/2026: From $245
    06

    Thu

  • DEN–HRL, 08/07/2026: From $232
    07

    Fri

  • DEN–HRL, 08/08/2026: From $188
    08

    Sat

  • DEN–HRL, 08/09/2026: From $232
    09

    Sun

  • DEN–HRL, 08/10/2026: From $245
    10

    Mon

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

    Tue

  • DEN–HRL, 08/12/2026: From $188
    12

    Wed

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

    Thu

  • DEN–HRL, 08/14/2026: From $190
    14

    Fri

  • DEN–HRL, 08/15/2026: From $188
    15

    Sat

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

    Sun

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

    Mon

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

    Tue

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

    Wed

  • DEN–HRL, 08/20/2026: From $190
    20

    Thu

  • DEN–HRL, 08/21/2026: From $105
    21

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

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

    Wed

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

    Thu

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

    Fri

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

    Sat

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

    Sun

    • Range$105-$281

    *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

    Route Information

    97† 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 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