Southwest® flights from Seattle/Tacoma to Buffalo/Niagara Falls from $189

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Low fares from Seattle/Tacoma to Buffalo/Niagara Falls

$

Seattle/Tacoma (SEA)to

Buffalo/Niagara Falls (BUF)
Depart: 11/12/2026

One-way

Basic

From
$189
Seen: 2 hrs ago

Seattle/Tacoma (SEA)to

Buffalo/Niagara Falls (BUF)
Depart: 10/26/2026

One-way

Basic

From
$194
Seen: 9 hrs ago

Seattle/Tacoma (SEA)to

Buffalo/Niagara Falls (BUF)
Depart: 11/25/2026

One-way

Basic

From
$230
Seen: 19 hrs ago

Seattle/Tacoma (SEA)to

Buffalo/Niagara Falls (BUF)
Depart: 11/12/2026

One-way

Choice

From
$244
Seen: 2 hrs ago

Seattle/Tacoma (SEA)to

Buffalo/Niagara Falls (BUF)
Depart: 10/26/2026

One-way

Choice

From
$249
Seen: 9 hrs ago

Seattle/Tacoma (SEA)to

Buffalo/Niagara Falls (BUF)
Depart: 10/23/2026

One-way

Basic

From
$260
Seen: 2 hrs ago

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Explore flights from Seattle/Tacoma to Buffalo/Niagara Falls

Oct 2026
From$194*
Seen: 9 hrs ago
One Way/Basic
Nov 2026
From$189*
Seen: 2 hrs ago
One Way/Basic
Dec 2026
From$279*
Seen: 21 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $194
cmp-daily-histogram-bars-legend-max-price-aria-label $470
Displaying fares for October-2026
  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    01

    Thu

    OCT

  • SEA–BUF, 10/02/2026: From $407
    02

    Fri

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    03

    Sat

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    04

    Sun

  • SEA–BUF, 10/05/2026: From $375
    05

    Mon

  • SEA–BUF, 10/06/2026: From $375
    06

    Tue

  • SEA–BUF, 10/07/2026: From $335
    07

    Wed

  • SEA–BUF, 10/08/2026: From $340
    08

    Thu

  • SEA–BUF, 10/09/2026: From $470
    09

    Fri

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    10

    Sat

  • SEA–BUF, 10/11/2026: From $335
    11

    Sun

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    12

    Mon

  • SEA–BUF, 10/13/2026: From $335
    13

    Tue

  • SEA–BUF, 10/14/2026: From $314
    14

    Wed

  • SEA–BUF, 10/15/2026: From $319
    15

    Thu

  • SEA–BUF, 10/16/2026: From $319
    16

    Fri

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    18

    Sun

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    19

    Mon

  • SEA–BUF, 10/20/2026: From $314
    20

    Tue

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    21

    Wed

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

  • SEA–BUF, 10/23/2026: From $260
    23

    Fri

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    24

    Sat

  • SEA–BUF, 10/25/2026: From $274
    25

    Sun

  • SEA–BUF, 10/26/2026: From $194
    26

    Mon

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

    Tue

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    28

    Wed

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    29

    Thu

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    30

    Fri

  • SEA–BUF: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

    • Range$194-$470

    *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:
    Seattle/Tacoma International Airport
    Arriving at:
    Buffalo Niagara International Airport
    Distance:
    2122 miles

    Route Information

    56† 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 56 weekly flights from Seattle/Tacoma to Buffalo/Niagara Falls on Southwest Airlines.
    To find the lowest fares by day and time to fly Seattle/Tacoma 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 Seattle/Tacoma 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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