Southwest® flights from Boston to Harlingen/South Padre Island from $135

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Low fares from Boston to Harlingen/South Padre Island

$

Boston (BOS)to

Harlingen/South Padre Island (HRL)
Depart: 04/22/2026

One-way

Basic

From
$135
Seen: 5 hrs ago

Boston (BOS)to

Harlingen/South Padre Island (HRL)
Depart: 04/22/2026

One-way

Choice

From
$176
Seen: 5 hrs ago

Boston (BOS)to

Harlingen/South Padre Island (HRL)
Depart: 05/19/2026

One-way

Basic

From
$179
Seen: 19 minutes ago

Boston (BOS)to

Harlingen/South Padre Island (HRL)
Depart: 04/23/2026

One-way

Basic

From
$205
Seen: 5 hrs ago

Boston (BOS)to

Harlingen/South Padre Island (HRL)
Depart: 04/24/2026

One-way

Basic

From
$205
Seen: 5 hrs ago

Boston (BOS)to

Harlingen/South Padre Island (HRL)
Depart: 05/10/2026

One-way

Basic

From
$205
Seen: 9 hrs ago

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Explore flights from Boston to Harlingen/South Padre Island

*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:
Logan International Airport
Arriving at:
Valley International Airport
Distance:
1874 miles

Route Information

40† 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 40 weekly flights from Boston to Harlingen/South Padre Island on Southwest Airlines.
To find the lowest fares by day and time to fly Boston 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 Boston 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.

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