Southwest® flights from Denver to Buffalo/Niagara Falls from $196

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Low fares from Denver to Buffalo/Niagara Falls

$

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 11/14/2026

One-way

Basic

From
$196
Seen: 22 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 12/10/2026

One-way

Basic

From
$196
Seen: 20 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 11/05/2026

One-way

Basic

From
$196
Seen: 2 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 11/07/2026

One-way

Basic

From
$196
Seen: 15 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 12/03/2026

One-way

Basic

From
$196
Seen: 16 hrs ago

Denver (DEN)to

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

One-way

Basic

From
$196
Seen: 13 hrs ago

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Explore flights from Denver to Buffalo/Niagara Falls

Oct 2026
From$206*
Seen: 19 hrs ago
One Way/Basic
Nov 2026
From$196*
Seen: 15 hrs ago
One Way/Basic
Dec 2026
From$196*
Seen: 22 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $206
cmp-daily-histogram-bars-legend-max-price-aria-label $604
Displaying fares for October-2026
  • DEN–BUF, 10/01/2026: From $594
    01

    Thu

    OCT

  • DEN–BUF, 10/02/2026: From $594
    02

    Fri

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

    Sat

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    04

    Sun

  • DEN–BUF, 10/05/2026: From $604
    05

    Mon

  • DEN–BUF, 10/06/2026: From $594
    06

    Tue

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    07

    Wed

  • DEN–BUF, 10/08/2026: From $504
    08

    Thu

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    09

    Fri

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    10

    Sat

  • DEN–BUF, 10/11/2026: From $504
    11

    Sun

  • DEN–BUF, 10/12/2026: From $494
    12

    Mon

  • DEN–BUF, 10/13/2026: From $494
    13

    Tue

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

    Wed

  • DEN–BUF, 10/15/2026: From $318
    15

    Thu

  • DEN–BUF, 10/16/2026: From $308
    16

    Fri

  • DEN–BUF, 10/17/2026: From $308
    17

    Sat

  • DEN–BUF, 10/18/2026: From $318
    18

    Sun

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    19

    Mon

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    20

    Tue

  • DEN–BUF, 10/21/2026: From $206
    21

    Wed

  • DEN–BUF, 10/22/2026: From $211
    22

    Thu

  • DEN–BUF, 10/23/2026: From $224
    23

    Fri

  • DEN–BUF, 10/24/2026: From $206
    24

    Sat

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

    Sun

  • DEN–BUF, 10/26/2026: From $206
    26

    Mon

  • DEN–BUF, 10/27/2026: From $206
    27

    Tue

  • DEN–BUF, 10/28/2026: From $206
    28

    Wed

  • DEN–BUF, 10/29/2026: From $206
    29

    Thu

  • DEN–BUF, 10/30/2026: From $224
    30

    Fri

  • DEN–BUF, 10/31/2026: From $224
    31

    Sat

    • Range$206-$604

    *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:
    Denver International Airport
    Arriving at:
    Buffalo Niagara International Airport
    Average flight time:
    3 hours 3 minutes
    Distance:
    1359 miles

    Route Information

    138† Weekly flights
    • 1‡ Nonstop flight per day Monday through Friday
    • 1‡ Nonstop flight on Saturday
    • 1‡ Nonstop flight on Sunday

    † 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

    The average flight time from Denver to Buffalo/Niagara Falls is 3 hours 3 minutes.
    There are 138 weekly flights from Denver to Buffalo/Niagara Falls on Southwest Airlines.
    Yes, Southwest flies nonstop from Denver to Buffalo/Niagara Falls once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Denver to Buffalo/Niagara Falls once per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Denver 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 Denver 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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