Southwest® flights from Denver to Buffalo/Niagara Falls from $158

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Low fares from Denver to Buffalo/Niagara Falls

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Denver (DEN)to

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

One-way

Basic

From
$158
Seen: 5 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 11/18/2026

One-way

Basic

From
$158
Seen: 11 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 12/24/2026

One-way

Basic

From
$158
Seen: 16 hrs ago

Denver (DEN)to

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

One-way

Basic

From
$158
Seen: 9 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 01/21/2027

One-way

Basic

From
$168
Seen: 8 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 11/26/2026

One-way

Basic

From
$168
Seen: 15 hrs ago

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Explore flights from Denver to Buffalo/Niagara Falls

Oct 2026
From$504*
Seen: 22 hrs ago
One Way/Basic
Nov 2026
From$158*
Seen: 11 hrs ago
One Way/Basic
Dec 2026
From$158*
Seen: 16 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $158
cmp-daily-histogram-bars-legend-max-price-aria-label $604
Displaying fares for October-2026
  • DEN–BUF: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

    OCT

  • DEN–BUF, 10/23/2026: From $604
    23

    Fri

  • DEN–BUF, 10/24/2026: From $604
    24

    Sat

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

    Sun

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

    Mon

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

    Tue

  • DEN–BUF, 10/28/2026: From $504
    28

    Wed

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

    Thu

  • DEN–BUF, 10/30/2026: From $504
    30

    Fri

  • DEN–BUF, 10/31/2026: From $514
    31

    Sat

  • DEN–BUF, 11/01/2026: From $504
    01

    Sun

    NOV

  • DEN–BUF, 11/02/2026: From $504
    02

    Mon

  • DEN–BUF, 11/03/2026: From $504
    03

    Tue

  • DEN–BUF, 11/04/2026: From $318
    04

    Wed

  • DEN–BUF: cmp-view-offers-disclaimer. Find Offers
    05

    Thu

  • DEN–BUF, 11/06/2026: From $318
    06

    Fri

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

    Sat

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

    Sun

  • DEN–BUF, 11/09/2026: From $158
    09

    Mon

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

    Tue

  • DEN–BUF: cmp-view-offers-disclaimer. Find Offers
    11

    Wed

  • DEN–BUF, 11/12/2026: From $158
    12

    Thu

  • DEN–BUF, 11/13/2026: From $174
    13

    Fri

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

    Sat

  • DEN–BUF: cmp-view-offers-disclaimer. Find Offers
    15

    Sun

  • DEN–BUF, 11/16/2026: From $173
    16

    Mon

  • DEN–BUF, 11/17/2026: From $168
    17

    Tue

  • DEN–BUF, 11/18/2026: From $158
    18

    Wed

  • DEN–BUF, 11/19/2026: From $290
    19

    Thu

  • DEN–BUF, 11/20/2026: From $282
    20

    Fri

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

    Sat

    • Range$158-$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

    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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