Southwest® flights from Long Island/Islip MacArthur to Buffalo/Niagara Falls from $111

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Low fares from Long Island/Islip MacArthur to Buffalo/Niagara Falls

$

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 10/03/2026

One-way

Basic

From
$111
Seen: 12 hrs ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 09/10/2026

One-way

Basic

From
$111
Seen: 1 hour ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 08/25/2026

One-way

Basic

From
$111
Seen: 41 minutes ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 10/02/2026

One-way

Basic

From
$119
Seen: 9 hrs ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 09/25/2026

One-way

Basic

From
$124
Seen: 21 hrs ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 08/21/2026

One-way

Basic

From
$124
Seen: 7 hrs ago

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Explore flights from Long Island/Islip MacArthur to Buffalo/Niagara Falls

Aug 2026
From$111*
Seen: 41 minutes ago
One Way/Basic
Sep 2026
From$111*
Seen: 1 hour ago
One Way/Basic
Oct 2026
From$111*
Seen: 12 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $111
cmp-daily-histogram-bars-legend-max-price-aria-label $372
Displaying fares for August-2026
  • ISP–BUF: cmp-view-offers-disclaimer. Find Offers
    01

    Sat

    AUG

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    02

    Sun

  • ISP–BUF, 08/03/2026: From $372
    03

    Mon

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    04

    Tue

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    05

    Wed

  • ISP–BUF, 08/06/2026: From $372
    06

    Thu

  • ISP–BUF, 08/07/2026: From $290
    07

    Fri

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    08

    Sat

  • ISP–BUF, 08/09/2026: From $290
    09

    Sun

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    10

    Mon

  • ISP–BUF, 08/11/2026: From $290
    11

    Tue

  • ISP–BUF, 08/12/2026: From $290
    12

    Wed

  • ISP–BUF, 08/13/2026: From $290
    13

    Thu

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    14

    Fri

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    15

    Sat

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    16

    Sun

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    17

    Mon

  • ISP–BUF, 08/18/2026: From $176
    18

    Tue

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    19

    Wed

  • ISP–BUF, 08/20/2026: From $176
    20

    Thu

  • ISP–BUF, 08/21/2026: From $124
    21

    Fri

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    22

    Sat

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    23

    Sun

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    24

    Mon

  • ISP–BUF, 08/25/2026: From $111
    25

    Tue

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    26

    Wed

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

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    28

    Fri

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    29

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    30

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    31

    Mon

    • Range$111-$372

    *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:
    Buffalo Niagara International Airport
    Distance:
    326 miles

    Route Information

    71† 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 71 weekly flights from Long Island/Islip MacArthur to Buffalo/Niagara Falls on Southwest Airlines.
    To find the lowest fares by day and time to fly Long Island/Islip MacArthur to Buffalo/Niagara Falls with Southwest, check out our Low Fare Calendar.
    You can rent a car at Buffalo Niagara International Airport book yours with your flight.
    Yes! Flights from Long Island/Islip MacArthur to Buffalo/Niagara Falls—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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