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

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
$196
Seen: 12 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 10/27/2026

One-way

Basic

From
$196
Seen: 18 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 10/22/2026

One-way

Basic

From
$196
Seen: 7 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 11/07/2026

One-way

Basic

From
$196
Seen: 3 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 11/18/2026

One-way

Basic

From
$196
Seen: 3 hrs ago

Buffalo/Niagara Falls (BUF)to

Denver (DEN)
Depart: 10/29/2026

One-way

Basic

From
$196
Seen: 14 hrs ago

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Explore flights from Buffalo/Niagara Falls to Denver

Try alternate month or interact with individual days below in order to find offers.
Sep 2026
No result for this month.
Oct 2026
From$196*
Seen: 7 hrs ago
One Way/Basic
Nov 2026
From$196*
Seen: 1 hour ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $196
cmp-daily-histogram-bars-legend-max-price-aria-label $594
Displaying fares for September-2026
  • BUF–DEN: cmp-view-offers-disclaimer. Find Offers
    30

    Wed

    SEP

  • BUF–DEN, 10/01/2026: From $594
    01

    Thu

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    02

    Fri

  • BUF–DEN, 10/03/2026: From $594
    03

    Sat

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    04

    Sun

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    05

    Mon

  • BUF–DEN, 10/06/2026: From $494
    06

    Tue

  • BUF–DEN, 10/07/2026: From $494
    07

    Wed

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

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  • BUF–DEN: cmp-view-offers-disclaimer. Find Offers
    09

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

    Sat

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

    Sun

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

    Mon

  • BUF–DEN, 10/13/2026: From $318
    13

    Tue

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

    Wed

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

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

    Fri

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

    Sat

  • BUF–DEN, 10/18/2026: From $334
    18

    Sun

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

    Mon

  • BUF–DEN, 10/20/2026: From $241
    20

    Tue

  • BUF–DEN, 10/21/2026: From $196
    21

    Wed

  • BUF–DEN, 10/22/2026: From $196
    22

    Thu

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

    Fri

  • BUF–DEN, 10/24/2026: From $196
    24

    Sat

  • BUF–DEN, 10/25/2026: From $270
    25

    Sun

  • BUF–DEN, 10/26/2026: From $196
    26

    Mon

  • BUF–DEN, 10/27/2026: From $196
    27

    Tue

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

    Wed

  • BUF–DEN, 10/29/2026: From $196
    29

    Thu

    • Range$196-$594

    *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

    Route Information

    156† 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 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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