Southwest® flights from Phoenix to Buffalo/Niagara Falls from $149

Promo Code

Low fares from Phoenix to Buffalo/Niagara Falls

$

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 10/29/2026

One-way

Basic

From
$149
Seen: 10 hrs ago

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 11/19/2026

One-way

Basic

From
$154
Seen: 22 hrs ago

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 10/13/2026

One-way

Basic

From
$154
Seen: 19 hrs ago

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 11/14/2026

One-way

Basic

From
$154
Seen: 14 hrs ago

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 10/23/2026

One-way

Basic

From
$154
Seen: 10 hrs ago

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 10/28/2026

One-way

Basic

From
$154
Seen: 10 hrs ago

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Explore flights from Phoenix to Buffalo/Niagara Falls

Sep 2026
From$154*
Seen: 7 hrs ago
One Way/Basic
Oct 2026
From$149*
Seen: 10 hrs ago
One Way/Basic
Nov 2026
From$154*
Seen: 23 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $154
cmp-daily-histogram-bars-legend-max-price-aria-label $569
Displaying fares for September-2026
  • PHX–BUF, 09/11/2026: From $380
    11

    Fri

    SEP

  • PHX–BUF, 09/12/2026: From $380
    12

    Sat

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

    Sun

  • PHX–BUF, 09/14/2026: From $221
    14

    Mon

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

    Tue

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

    Wed

  • PHX–BUF, 09/17/2026: From $569
    17

    Thu

  • PHX–BUF, 09/18/2026: From $350
    18

    Fri

  • PHX–BUF, 09/19/2026: From $211
    19

    Sat

  • PHX–BUF: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

  • PHX–BUF, 09/21/2026: From $240
    21

    Mon

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

    Tue

  • PHX–BUF, 09/23/2026: From $255
    23

    Wed

  • PHX–BUF, 09/24/2026: From $429
    24

    Thu

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

    Fri

  • PHX–BUF, 09/26/2026: From $240
    26

    Sat

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

    Sun

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

    Mon

  • PHX–BUF, 09/29/2026: From $154
    29

    Tue

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

    Wed

  • PHX–BUF, 10/01/2026: From $275
    01

    Thu

    OCT

  • PHX–BUF, 10/02/2026: From $260
    02

    Fri

  • PHX–BUF, 10/03/2026: From $200
    03

    Sat

  • PHX–BUF, 10/04/2026: From $200
    04

    Sun

  • PHX–BUF, 10/05/2026: From $154
    05

    Mon

  • PHX–BUF, 10/06/2026: From $154
    06

    Tue

  • PHX–BUF, 10/07/2026: From $169
    07

    Wed

  • PHX–BUF, 10/08/2026: From $210
    08

    Thu

  • PHX–BUF, 10/09/2026: From $240
    09

    Fri

  • PHX–BUF, 10/10/2026: From $240
    10

    Sat

    • Range$154-$569

    *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:
    Sky Harbor International Airport
    Arriving at:
    Buffalo Niagara International Airport
    Average flight time:
    4 hours 5 minutes
    Distance:
    1912 miles

    Route Information

    148† Weekly flights
    • 1‡ Nonstop flight per day Monday through Friday
    • 2‡ Nonstop flights 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 Phoenix to Buffalo/Niagara Falls is 4 hours 5 minutes.
    There are 148 weekly flights from Phoenix to Buffalo/Niagara Falls on Southwest Airlines.
    Yes, Southwest flies nonstop from Phoenix to Buffalo/Niagara Falls once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Phoenix to Buffalo/Niagara Falls 2 times per day on Saturdays and once per day on Sundays.
    To find the lowest fares by day and time to fly Phoenix 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 Phoenix 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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