Southwest® flights from Denver to Buffalo/Niagara Falls from $200

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Low fares from Denver to Buffalo/Niagara Falls

$

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 01/09/2027

One-way

Basic

From
$200
Seen: 19 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 12/02/2026

One-way

Basic

From
$200
Seen: 10 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 12/05/2026

One-way

Basic

From
$200
Seen: 6 hrs ago

Denver (DEN)to

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

One-way

Basic

From
$200
Seen: 1 hour ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 12/30/2026

One-way

Basic

From
$210
Seen: 5 hrs ago

Denver (DEN)to

Buffalo/Niagara Falls (BUF)
Depart: 01/27/2027

One-way

Basic

From
$210
Seen: 22 hrs ago

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Explore flights from Denver to Buffalo/Niagara Falls

Nov 2026
From$315*
Seen: 4 hrs ago
One Way/Basic
Dec 2026
From$200*
Seen: 10 hrs ago
One Way/Basic
Jan 2027
From$200*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $200
cmp-daily-histogram-bars-legend-max-price-aria-label $609
Displaying fares for November-2026
  • DEN–BUF, 11/10/2026: From $609
    10

    Tue

    NOV

  • DEN–BUF, 11/11/2026: From $609
    11

    Wed

  • DEN–BUF, 11/12/2026: From $609
    12

    Thu

  • DEN–BUF: cmp-view-offers-disclaimer. Find Offers
    13

    Fri

  • DEN–BUF, 11/14/2026: From $609
    14

    Sat

  • DEN–BUF, 11/15/2026: From $609
    15

    Sun

  • DEN–BUF, 11/16/2026: From $509
    16

    Mon

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

    Tue

  • DEN–BUF, 11/18/2026: From $509
    18

    Wed

  • DEN–BUF, 11/19/2026: From $509
    19

    Thu

  • DEN–BUF, 11/20/2026: From $509
    20

    Fri

  • DEN–BUF, 11/21/2026: From $509
    21

    Sat

  • DEN–BUF, 11/22/2026: From $509
    22

    Sun

  • DEN–BUF: cmp-view-offers-disclaimer. Find Offers
    23

    Mon

  • DEN–BUF, 11/24/2026: From $333
    24

    Tue

  • DEN–BUF, 11/25/2026: From $333
    25

    Wed

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

    Thu

  • DEN–BUF, 11/27/2026: From $323
    27

    Fri

  • DEN–BUF, 11/28/2026: From $353
    28

    Sat

  • DEN–BUF, 11/29/2026: From $390
    29

    Sun

  • DEN–BUF, 11/30/2026: From $315
    30

    Mon

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

    Tue

    DEC

  • DEN–BUF, 12/02/2026: From $200
    02

    Wed

  • DEN–BUF, 12/03/2026: From $215
    03

    Thu

  • DEN–BUF, 12/04/2026: From $225
    04

    Fri

  • DEN–BUF, 12/05/2026: From $200
    05

    Sat

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

    Sun

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

    Mon

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

    Tue

  • DEN–BUF, 12/09/2026: From $200
    09

    Wed

    • Range$200-$609

    *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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