Southwest® flights from Long Island/Islip MacArthur to San Diego from $156

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Low fares from Long Island/Islip MacArthur to San Diego

$

Long Island/Islip MacArthur (ISP)to

San Diego (SAN)
Depart: 08/26/2026

One-way

Basic

From
$156
Seen: 17 hrs ago

Long Island/Islip MacArthur (ISP)to

San Diego (SAN)
Depart: 10/26/2026

One-way

Basic

From
$156
Seen: 12 hrs ago

Long Island/Islip MacArthur (ISP)to

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

One-way

Basic

From
$174
Seen: 28 minutes ago

Long Island/Islip MacArthur (ISP)to

San Diego (SAN)
Depart: 09/26/2026

One-way

Basic

From
$174
Seen: 2 hrs ago

Long Island/Islip MacArthur (ISP)to

San Diego (SAN)
Depart: 08/28/2026

One-way

Basic

From
$207
Seen: 3 hrs ago

Long Island/Islip MacArthur (ISP)to

San Diego (SAN)
Depart: 10/31/2026

One-way

Basic

From
$207
Seen: 16 hrs ago

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Explore flights from Long Island/Islip MacArthur to San Diego

Jul 2026
From$589*
Seen: 21 hrs ago
One Way/Basic
Aug 2026
From$156*
Seen: 17 hrs ago
One Way/Basic
Sep 2026
From$174*
Seen: 2 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $156
cmp-daily-histogram-bars-legend-max-price-aria-label $594
Displaying fares for July-2026
  • ISP–SAN, 07/31/2026: From $589
    31

    Fri

    JUL

  • ISP–SAN, 08/01/2026: From $589
    01

    Sat

  • ISP–SAN, 08/02/2026: From $584
    02

    Sun

  • ISP–SAN, 08/03/2026: From $589
    03

    Mon

  • ISP–SAN, 08/04/2026: From $589
    04

    Tue

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    05

    Wed

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    06

    Thu

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    07

    Fri

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    08

    Sat

  • ISP–SAN, 08/09/2026: From $594
    09

    Sun

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    10

    Mon

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    11

    Tue

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    12

    Wed

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    13

    Thu

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    14

    Fri

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    15

    Sat

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    16

    Sun

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    17

    Mon

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    18

    Tue

  • ISP–SAN, 08/19/2026: From $299
    19

    Wed

  • ISP–SAN, 08/20/2026: From $299
    20

    Thu

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    21

    Fri

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    22

    Sat

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

  • ISP–SAN, 08/24/2026: From $275
    24

    Mon

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    25

    Tue

  • ISP–SAN, 08/26/2026: From $156
    26

    Wed

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    27

    Thu

  • ISP–SAN, 08/28/2026: From $207
    28

    Fri

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

  • ISP–SAN: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

    • Range$156-$594

    *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:
    Long Island MacArthur Airport
    Arriving at:
    San Diego International Airport
    Distance:
    2481 miles

    Route Information

    64† 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 64 weekly flights from Long Island/Islip MacArthur to San Diego on Southwest Airlines.
    To find the lowest fares by day and time to fly Long Island/Islip MacArthur 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 Long Island/Islip MacArthur 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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