Southwest® flights from San Diego to Buffalo/Niagara Falls from $159

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Low fares from San Diego to Buffalo/Niagara Falls

$

San Diego (SAN)to

Buffalo/Niagara Falls (BUF)
Depart: 09/12/2026

One-way

Basic

From
$159
Seen: 9 hrs ago

San Diego (SAN)to

Buffalo/Niagara Falls (BUF)
Depart: 09/05/2026

One-way

Basic

From
$159
Seen: 4 hrs ago

San Diego (SAN)to

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

One-way

Basic

From
$159
Seen: 2 hrs ago

San Diego (SAN)to

Buffalo/Niagara Falls (BUF)
Depart: 10/17/2026

One-way

Basic

From
$164
Seen: 21 hrs ago

San Diego (SAN)to

Buffalo/Niagara Falls (BUF)
Depart: 10/01/2026

One-way

Basic

From
$164
Seen: 11 hrs ago

San Diego (SAN)to

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

One-way

Basic

From
$164
Seen: 15 hrs ago

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Explore flights from San Diego to Buffalo/Niagara Falls

Aug 2026
From$164*
Seen: 11 hrs ago
One Way/Basic
Sep 2026
From$159*
Seen: 9 hrs ago
One Way/Basic
Oct 2026
From$164*
Seen: 15 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $164
cmp-daily-histogram-bars-legend-max-price-aria-label $574
Displaying fares for August-2026
  • SAN–BUF, 08/02/2026: From $574
    02

    Sun

    AUG

  • SAN–BUF, 08/03/2026: From $520
    03

    Mon

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    04

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  • SAN–BUF, 08/05/2026: From $520
    05

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    06

    Thu

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    07

    Fri

  • SAN–BUF, 08/08/2026: From $473
    08

    Sat

  • SAN–BUF, 08/09/2026: From $468
    09

    Sun

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    10

    Mon

  • SAN–BUF, 08/11/2026: From $473
    11

    Tue

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    12

    Wed

  • SAN–BUF, 08/13/2026: From $473
    13

    Thu

  • SAN–BUF, 08/14/2026: From $473
    14

    Fri

  • SAN–BUF, 08/15/2026: From $277
    15

    Sat

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    16

    Sun

  • SAN–BUF, 08/17/2026: From $277
    17

    Mon

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    18

    Tue

  • SAN–BUF, 08/19/2026: From $277
    19

    Wed

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    20

    Thu

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    21

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    22

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    23

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    24

    Mon

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    25

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    26

    Wed

  • SAN–BUF, 08/27/2026: From $164
    27

    Thu

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    28

    Fri

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    29

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    30

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    31

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    01

    Tue

    SEP

    • Range$164-$574

    *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:
    San Diego International Airport
    Arriving at:
    Buffalo Niagara International Airport
    Distance:
    2196 miles

    Route Information

    111† 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 111 weekly flights from San Diego to Buffalo/Niagara Falls on Southwest Airlines.
    To find the lowest fares by day and time to fly San Diego 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 San Diego 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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