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

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Low fares from Buffalo/Niagara Falls to Denver

$

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 11/12/2026

One-way

Basic

From
$158
Seen: 17 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 12/19/2026

One-way

Basic

From
$158
Seen: 22 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 11/17/2026

One-way

Basic

From
$158
Seen: 15 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 11/09/2026

One-way

Basic

From
$158
Seen: 11 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 12/14/2026

One-way

Basic

From
$158
Seen: 4 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 12/07/2026

One-way

Basic

From
$158
Seen: 2 hrs ago

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Explore flights from Buffalo/Niagara Falls to Denver

Oct 2026
From$504*
Seen: 8 hrs ago
One Way/Basic
Nov 2026
From$158*
Seen: 15 hrs ago
One Way/Basic
Dec 2026
From$158*
Seen: 4 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
  • BUF–DEN: cmp-view-offers-disclaimer. Find Offers
    20

    Tue

    OCT

  • BUF–DEN, 10/21/2026: From $604
    21

    Wed

  • BUF–DEN, 10/22/2026: From $604
    22

    Thu

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

    Fri

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

    Sat

  • BUF–DEN, 10/25/2026: From $604
    25

    Sun

  • BUF–DEN, 10/26/2026: From $504
    26

    Mon

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

    Tue

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

    Wed

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

    Thu

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

    Fri

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

    Sat

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

    Sun

    NOV

  • BUF–DEN: cmp-view-offers-disclaimer. Find Offers
    02

    Mon

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

    Tue

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

    Wed

  • BUF–DEN, 11/05/2026: From $318
    05

    Thu

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

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

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

    Wed

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

    Thu

  • BUF–DEN, 11/13/2026: From $227
    13

    Fri

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

    Sat

  • BUF–DEN, 11/15/2026: From $280
    15

    Sun

  • BUF–DEN, 11/16/2026: From $168
    16

    Mon

  • BUF–DEN, 11/17/2026: From $158
    17

    Tue

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

    Wed

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

    Thu

    • 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:
    Buffalo Niagara International Airport
    Arriving at:
    Denver International Airport
    Average flight time:
    3 hours 39 minutes
    Distance:
    1359 miles

    Questions we hear the most

    The average flight time from Buffalo/Niagara Falls to Denver is 3 hours 39 minutes.
    There are 156 weekly flights from Buffalo/Niagara Falls to Denver on Southwest Airlines.
    Yes, Southwest flies nonstop from Buffalo/Niagara Falls to Denver once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Buffalo/Niagara Falls to Denver once per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Buffalo/Niagara Falls to Denver with Southwest, check out our Low Fare Calendar.
    You can rent a car at Denver International Airport book yours with your flight.
    Yes! Flights from Buffalo/Niagara Falls to Denver—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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