Southwest® flights from Long Island/Islip MacArthur to Buffalo/Niagara Falls from $98

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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: 11/19/2026

One-way

Basic

From
$98
Seen: 6 hrs ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 11/17/2026

One-way

Basic

From
$100
Seen: 2 hrs ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 01/15/2027

One-way

Basic

From
$100
Seen: 15 hrs ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 11/13/2026

One-way

Basic

From
$100
Seen: 1 hour ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 01/14/2027

One-way

Basic

From
$114
Seen: 12 hrs ago

Long Island/Islip MacArthur (ISP)to

Buffalo/Niagara Falls (BUF)
Depart: 11/09/2026

One-way

Basic

From
$128
Seen: 15 hrs ago

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

Oct 2026
From$392*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$98*
Seen: 6 hrs ago
One Way/Basic
Dec 2026
From$390*
Seen: 8 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $98
Displaying fares for October-2026
  • ISP–BUF, 10/21/2026: From $392
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    OCT

  • ISP–BUF, 10/22/2026: From $392
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  • ISP–BUF, 11/01/2026: From $310
    01

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    NOV

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  • ISP–BUF, 11/09/2026: From $128
    09

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    11

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    12

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  • ISP–BUF, 11/13/2026: From $100
    13

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    15

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  • ISP–BUF, 11/17/2026: From $100
    17

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    18

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  • ISP–BUF, 11/19/2026: From $98
    19

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    20

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    • Range$98-$392

    *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

    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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