Southwest® flights from Buffalo/Niagara Falls to Seattle/Tacoma from $205

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Low fares from Buffalo/Niagara Falls to Seattle/Tacoma

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Buffalo/Niagara Falls (BUF)to

Seattle/Tacoma (SEA)
Depart: 12/16/2026

One-way

Basic

From
$205
Seen: 18 hrs ago

Buffalo/Niagara Falls (BUF)to

Seattle/Tacoma (SEA)
Depart: 12/05/2026

One-way

Basic

From
$205
Seen: 21 hrs ago

Buffalo/Niagara Falls (BUF)to

Seattle/Tacoma (SEA)
Depart: 12/02/2026

One-way

Basic

From
$205
Seen: 18 hrs ago

Buffalo/Niagara Falls (BUF)to

Seattle/Tacoma (SEA)
Depart: 12/10/2026

One-way

Basic

From
$225
Seen: 18 hrs ago

Buffalo/Niagara Falls (BUF)to

Seattle/Tacoma (SEA)
Depart: 12/03/2026

One-way

Basic

From
$225
Seen: 15 hrs ago

Buffalo/Niagara Falls (BUF)to

Seattle/Tacoma (SEA)
Depart: 01/18/2027

One-way

Basic

From
$225
Seen: 4 hrs ago

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Explore flights from Buffalo/Niagara Falls to Seattle/Tacoma

Nov 2026
From$350*
Seen: 2 hrs ago
One Way/Basic
Dec 2026
From$205*
Seen: 18 hrs ago
One Way/Basic
Jan 2027
From$225*
Seen: 4 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $205
cmp-daily-histogram-bars-legend-max-price-aria-label $945
Displaying fares for November-2026
  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    11

    Wed

    NOV

  • BUF–SEA, 11/12/2026: From $390
    12

    Thu

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    13

    Fri

  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    14

    Sat

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    15

    Sun

  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

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

    Tue

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

    Wed

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

    Thu

  • BUF–SEA, 11/20/2026: From $350
    20

    Fri

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

    Sat

  • BUF–SEA, 11/22/2026: From $350
    22

    Sun

  • BUF–SEA, 11/23/2026: From $350
    23

    Mon

  • BUF–SEA, 11/24/2026: From $350
    24

    Tue

  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    25

    Wed

  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    26

    Thu

  • BUF–SEA, 11/27/2026: From $395
    27

    Fri

  • BUF–SEA, 11/28/2026: From $945
    28

    Sat

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

    Sun

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

    Mon

  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    DEC

  • BUF–SEA, 12/02/2026: From $205
    02

    Wed

  • BUF–SEA, 12/03/2026: From $225
    03

    Thu

  • BUF–SEA, 12/04/2026: From $240
    04

    Fri

  • BUF–SEA, 12/05/2026: From $205
    05

    Sat

  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • BUF–SEA: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • BUF–SEA, 12/10/2026: From $225
    10

    Thu

    • Range$205-$945

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

    Questions we hear the most

    There are 68 weekly flights from Buffalo/Niagara Falls to Seattle/Tacoma on Southwest Airlines.
    To find the lowest fares by day and time to fly Buffalo/Niagara Falls to Seattle/Tacoma with Southwest, check out our Low Fare Calendar.
    You can rent a car at Seattle/Tacoma International Airport book yours with your flight.
    Yes! Flights from Buffalo/Niagara Falls to Seattle/Tacoma—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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