Southwest® flights from Harlingen/South Padre Island to Baltimore/Washington from $159

Promo Code

Low fares from Harlingen/South Padre Island to Baltimore/Washington

$

Harlingen/South Padre Island (HRL)to

Baltimore/Washington (BWI)
Depart: 10/06/2026

One-way

Basic

From
$159
Seen: 10 hrs ago

Harlingen/South Padre Island (HRL)to

Baltimore/Washington (BWI)
Depart: 09/14/2026

One-way

Basic

From
$174
Seen: 1 hour ago

Harlingen/South Padre Island (HRL)to

Baltimore/Washington (BWI)
Depart: 09/09/2026

One-way

Basic

From
$176
Seen: 1 hour ago

Harlingen/South Padre Island (HRL)to

Baltimore/Washington (BWI)
Depart: 09/11/2026

One-way

Basic

From
$185
Seen: 30 minutes ago

Harlingen/South Padre Island (HRL)to

Baltimore/Washington (BWI)
Depart: 10/08/2026

One-way

Basic

From
$207
Seen: 15 hrs ago

Harlingen/South Padre Island (HRL)to

Baltimore/Washington (BWI)
Depart: 10/06/2026

One-way

Choice

From
$209
Seen: 10 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.

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Explore flights from Harlingen/South Padre Island to Baltimore/Washington

Aug 2026
From$260*
Seen: 6 hrs ago
One Way/Basic
Sep 2026
From$174*
Seen: 1 hour ago
One Way/Basic
Oct 2026
From$159*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $174
Displaying fares for August-2026
  • HRL–BWI: cmp-view-offers-disclaimer. Find Offers
    22

    Sat

    AUG

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    23

    Sun

  • HRL–BWI, 08/24/2026: From $286
    24

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    25

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    26

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    27

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    28

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    29

    Sat

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    30

    Sun

  • HRL–BWI, 08/31/2026: From $260
    31

    Mon

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    01

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    SEP

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    02

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    03

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    04

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  • HRL–BWI, 09/05/2026: From $215
    05

    Sat

  • HRL–BWI, 09/06/2026: From $215
    06

    Sun

  • HRL–BWI: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • HRL–BWI: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • HRL–BWI, 09/09/2026: From $176
    09

    Wed

  • HRL–BWI: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

  • HRL–BWI, 09/11/2026: From $185
    11

    Fri

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    12

    Sat

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

    Sun

  • HRL–BWI, 09/14/2026: From $174
    14

    Mon

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    15

    Tue

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    16

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    17

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    18

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    19

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    20

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    21

    Mon

    • Range$174-$286

    *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:
    Balt./Wash. International Airport
    Distance:
    1507 miles

    Route Information

    104† 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 104 weekly flights from Harlingen/South Padre Island to Baltimore/Washington on Southwest Airlines.
    To find the lowest fares by day and time to fly Harlingen/South Padre Island to Baltimore/Washington with Southwest, check out our Low Fare Calendar.
    You can rent a car at Balt./Wash. International Airport book yours with your flight.
    Yes! Flights from Harlingen/South Padre Island to Baltimore/Washington—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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