Spirit Airlines Customers: Southwest has options for Customers holding Spirit reservations. We’re here to help you continue your journey. Learn more.

Southwest® flights from Greenville-Spartanburg to Buffalo/Niagara Falls from $171

Promo Code

Low fares from Greenville-Spartanburg to Buffalo/Niagara Falls

$

Greenville-Spartanburg (GSP)to

Buffalo/Niagara Falls (BUF)
Depart: 07/07/2026

One-way

Basic

From
$171
Seen: 16 hrs ago

Greenville-Spartanburg (GSP)to

Buffalo/Niagara Falls (BUF)
Depart: 06/25/2026

One-way

Basic

From
$171
Seen: 18 hrs ago

Greenville-Spartanburg (GSP)to

Buffalo/Niagara Falls (BUF)
Depart: 07/15/2026

One-way

Basic

From
$171
Seen: 17 hrs ago

Greenville-Spartanburg (GSP)to

Buffalo/Niagara Falls (BUF)
Depart: 08/12/2026

One-way

Basic

From
$172
Seen: 9 hrs ago

Greenville-Spartanburg (GSP)to

Buffalo/Niagara Falls (BUF)
Depart: 08/11/2026

One-way

Basic

From
$184
Seen: 9 hrs ago

Greenville-Spartanburg (GSP)to

Buffalo/Niagara Falls (BUF)
Depart: 06/24/2026

One-way

Basic

From
$194
Seen: 9 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 Greenville-Spartanburg to Buffalo/Niagara Falls

May 2026
From$219*
Seen: 8 hrs ago
One Way/Basic
Jun 2026
From$171*
Seen: 18 hrs ago
One Way/Basic
Jul 2026
From$171*
Seen: 16 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $209
Displaying fares for May-2026
  • 13

    Wed

    MAY

  • 14

    Thu

  • 15

    Fri

  • 16

    Sat

  • 17

    Sun

  • 18

    Mon

  • 19

    Tue

  • 20

    Wed

  • 21

    Thu

  • 22

    Fri

  • 23

    Sat

  • 24

    Sun

  • 25

    Mon

  • 26

    Tue

  • 27

    Wed

  • 28

    Thu

  • 29

    Fri

  • 30

    Sat

  • 31

    Sun

  • 01

    Mon

    JUN

  • 02

    Tue

  • 03

    Wed

  • 04

    Thu

  • 05

    Fri

  • 06

    Sat

  • 07

    Sun

  • 08

    Mon

  • 09

    Tue

  • 10

    Wed

  • 11

    Thu

  • 12

    Fri

    • Range$209-$399

    *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:
    Greenville-Spartanburg International Airport
    Arriving at:
    Buffalo Niagara International Airport
    Distance:
    586 miles

    Route Information

    55† Weekly flights

    † 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

    There are 55 weekly flights from Greenville-Spartanburg to Buffalo/Niagara Falls on Southwest Airlines.
    To find the lowest fares by day and time to fly Greenville-Spartanburg 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 Greenville-Spartanburg 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.

    Explore Flights from Other Popular Origins

    Popular Flights from Greenville-Spartanburg