Southwest® flights from Harlingen/South Padre Island to San Diego from $161

Promo Code

Low fares from Harlingen/South Padre Island to San Diego

$

Harlingen/South Padre Island (HRL)to

San Diego (SAN)
Depart: 09/10/2026

One-way

Basic

From
$161
Seen: 20 hrs ago

Harlingen/South Padre Island (HRL)to

San Diego (SAN)
Depart: 09/01/2026

One-way

Basic

From
$161
Seen: 23 hrs ago

Harlingen/South Padre Island (HRL)to

San Diego (SAN)
Depart: 09/05/2026

One-way

Basic

From
$161
Seen: 1 hour ago

Harlingen/South Padre Island (HRL)to

San Diego (SAN)
Depart: 09/09/2026

One-way

Basic

From
$161
Seen: 22 hrs ago

Harlingen/South Padre Island (HRL)to

San Diego (SAN)
Depart: 09/11/2026

One-way

Basic

From
$161
Seen: 6 hrs ago

Harlingen/South Padre Island (HRL)to

San Diego (SAN)
Depart: 08/24/2026

One-way

Basic

From
$170
Seen: 2 hrs ago

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Explore flights from Harlingen/South Padre Island to San Diego

Aug 2026
From$170*
Seen: 2 hrs ago
One Way/Basic
Sep 2026
From$161*
Seen: 23 hrs ago
One Way/Basic
Oct 2026
From$170*
Seen: 7 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $161
cmp-daily-histogram-bars-legend-max-price-aria-label $275
Displaying fares for August-2026
  • HRL–SAN, 08/03/2026: From $264
    03

    Mon

    AUG

  • HRL–SAN: cmp-view-offers-disclaimer. Find Offers
    04

    Tue

  • HRL–SAN, 08/05/2026: From $201
    05

    Wed

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    06

    Thu

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    07

    Fri

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    08

    Sat

  • HRL–SAN, 08/09/2026: From $275
    09

    Sun

  • HRL–SAN, 08/10/2026: From $240
    10

    Mon

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    11

    Tue

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    12

    Wed

  • HRL–SAN, 08/13/2026: From $240
    13

    Thu

  • HRL–SAN, 08/14/2026: From $240
    14

    Fri

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    15

    Sat

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    16

    Sun

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    17

    Mon

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    18

    Tue

  • HRL–SAN, 08/19/2026: From $188
    19

    Wed

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    20

    Thu

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    21

    Fri

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    22

    Sat

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    23

    Sun

  • HRL–SAN, 08/24/2026: From $170
    24

    Mon

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    25

    Tue

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    26

    Wed

  • HRL–SAN, 08/27/2026: From $170
    27

    Thu

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    28

    Fri

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    29

    Sat

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    30

    Sun

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    31

    Mon

  • HRL–SAN, 09/01/2026: From $161
    01

    Tue

    SEP

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    02

    Wed

    • Range$161-$275

    *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:
    Valley International Airport
    Arriving at:
    San Diego International Airport
    Distance:
    1257 miles

    Route Information

    85† 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 85 weekly flights from Harlingen/South Padre Island to San Diego on Southwest Airlines.
    To find the lowest fares by day and time to fly Harlingen/South Padre Island to San Diego with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Diego International Airport book yours with your flight.
    Yes! Flights from Harlingen/South Padre Island to San Diego—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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