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

Promo Code

Low fares from Buffalo/Niagara Falls to Denver

$

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 12/16/2026

One-way

Basic

From
$200
Seen: 22 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 12/19/2026

One-way

Basic

From
$200
Seen: 21 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 01/09/2027

One-way

Basic

From
$200
Seen: 9 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 01/05/2027

One-way

Basic

From
$200
Seen: 5 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 12/15/2026

One-way

Basic

From
$200
Seen: 22 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 02/13/2027

One-way

Basic

From
$210
Seen: 20 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Buffalo/Niagara Falls to Denver

Nov 2026
From$323*
Seen: 19 hrs ago
One Way/Basic
Dec 2026
From$200*
Seen: 21 hrs ago
One Way/Basic
Jan 2027
From$200*
Seen: 9 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $210
cmp-daily-histogram-bars-legend-max-price-aria-label $609
Displaying fares for November-2026
  • BUF–DEN, 11/09/2026: From $609
    09

    Mon

    NOV

  • BUF–DEN, 11/10/2026: From $609
    10

    Tue

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

    Wed

  • BUF–DEN: cmp-view-offers-disclaimer. Find Offers
    12

    Thu

  • BUF–DEN, 11/13/2026: From $609
    13

    Fri

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

    Sat

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

    Sun

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

    Mon

  • BUF–DEN, 11/17/2026: From $509
    17

    Tue

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

    Wed

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

    Thu

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

    Fri

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

    Sat

  • BUF–DEN: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

  • BUF–DEN, 11/23/2026: From $323
    23

    Mon

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

    Tue

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

    Wed

  • BUF–DEN, 11/26/2026: From $333
    26

    Thu

  • BUF–DEN, 11/27/2026: From $429
    27

    Fri

  • BUF–DEN, 11/28/2026: From $539
    28

    Sat

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

    Sun

  • BUF–DEN, 11/30/2026: From $325
    30

    Mon

  • BUF–DEN, 12/01/2026: From $295
    01

    Tue

    DEC

  • BUF–DEN, 12/02/2026: From $210
    02

    Wed

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

    Thu

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

    Fri

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

    Sat

  • BUF–DEN, 12/06/2026: From $285
    06

    Sun

  • BUF–DEN, 12/07/2026: From $215
    07

    Mon

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

    Tue

    • Range$210-$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:
    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.

    Explore Flights from Other Popular Origins

    Popular Flights from Buffalo/Niagara Falls