Southwest® flights from Phoenix to Buffalo/Niagara Falls from $154

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Low fares from Phoenix to Buffalo/Niagara Falls

$

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 09/20/2026

One-way

Basic

From
$154
Seen: 18 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: 09/15/2026

One-way

Basic

From
$154
Seen: 18 hrs ago

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 09/02/2026

One-way

Basic

From
$154
Seen: 15 hrs ago

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 10/17/2026

One-way

Basic

From
$154
Seen: 16 hrs ago

Phoenix (PHX)to

Buffalo/Niagara Falls (BUF)
Depart: 08/28/2026

One-way

Basic

From
$154
Seen: 2 hrs ago

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Explore flights from Phoenix to Buffalo/Niagara Falls

Aug 2026
From$154*
Seen: 2 hrs ago
One Way/Basic
Sep 2026
From$154*
Seen: 15 hrs ago
One Way/Basic
Oct 2026
From$154*
Seen: 15 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $154
cmp-daily-histogram-bars-legend-max-price-aria-label $380
Displaying fares for August-2026
  • PHX–BUF, 08/01/2026: From $380
    01

    Sat

    AUG

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    02

    Sun

  • PHX–BUF, 08/03/2026: From $240
    03

    Mon

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    04

    Tue

  • PHX–BUF, 08/05/2026: From $221
    05

    Wed

  • PHX–BUF, 08/06/2026: From $340
    06

    Thu

  • PHX–BUF, 08/07/2026: From $240
    07

    Fri

  • PHX–BUF, 08/08/2026: From $211
    08

    Sat

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    09

    Sun

  • PHX–BUF, 08/10/2026: From $216
    10

    Mon

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    11

    Tue

  • PHX–BUF, 08/12/2026: From $211
    12

    Wed

  • PHX–BUF, 08/13/2026: From $245
    13

    Thu

  • PHX–BUF, 08/14/2026: From $240
    14

    Fri

  • PHX–BUF, 08/15/2026: From $200
    15

    Sat

  • PHX–BUF, 08/16/2026: From $200
    16

    Sun

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    17

    Mon

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    18

    Tue

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    19

    Wed

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    20

    Thu

  • PHX–BUF, 08/21/2026: From $226
    21

    Fri

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    22

    Sat

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    23

    Sun

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    24

    Mon

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    25

    Tue

  • PHX–BUF, 08/26/2026: From $200
    26

    Wed

  • PHX–BUF, 08/27/2026: From $200
    27

    Thu

  • PHX–BUF, 08/28/2026: From $154
    28

    Fri

  • PHX–BUF, 08/29/2026: From $154
    29

    Sat

  • PHX–BUF, 08/30/2026: From $154
    30

    Sun

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    31

    Mon

    • Range$154-$380

    *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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