Southwest® flights from Boise to Greenville-Spartanburg from $190

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Low fares from Boise to Greenville-Spartanburg

$

Boise (BOI)to

Greenville-Spartanburg (GSP)
Depart: 09/09/2026

One-way

Basic

From
$190
Seen: 15 hrs ago

Boise (BOI)to

Greenville-Spartanburg (GSP)
Depart: 09/22/2026

One-way

Basic

From
$223
Seen: 15 hrs ago

Boise (BOI)to

Greenville-Spartanburg (GSP)
Depart: 09/15/2026

One-way

Basic

From
$223
Seen: 15 hrs ago

Boise (BOI)to

Greenville-Spartanburg (GSP)
Depart: 09/09/2026

One-way

Choice

From
$240
Seen: 15 hrs ago

Boise (BOI)to

Greenville-Spartanburg (GSP)
Depart: 10/06/2026

One-way

Basic

From
$240
Seen: 15 hrs ago

Boise (BOI)to

Greenville-Spartanburg (GSP)
Depart: 10/02/2026

One-way

Basic

From
$244
Seen: 11 hrs ago

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Explore flights from Boise to Greenville-Spartanburg

Aug 2026
From$499*
Seen: 22 hrs ago
One Way/Basic
Sep 2026
From$190*
Seen: 15 hrs ago
One Way/Basic
Oct 2026
From$240*
Seen: 15 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $190
cmp-daily-histogram-bars-legend-max-price-aria-label $574
Displaying fares for August-2026
  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    25

    Tue

    AUG

  • BOI–GSP, 08/26/2026: From $574
    26

    Wed

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    27

    Thu

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    28

    Fri

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

  • BOI–GSP, 08/30/2026: From $499
    30

    Sun

  • BOI–GSP, 08/31/2026: From $499
    31

    Mon

  • BOI–GSP, 09/01/2026: From $499
    01

    Tue

    SEP

  • BOI–GSP, 09/02/2026: From $499
    02

    Wed

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    03

    Thu

  • BOI–GSP, 09/04/2026: From $499
    04

    Fri

  • BOI–GSP, 09/05/2026: From $499
    05

    Sat

  • BOI–GSP, 09/06/2026: From $499
    06

    Sun

  • BOI–GSP, 09/07/2026: From $499
    07

    Mon

  • BOI–GSP, 09/08/2026: From $331
    08

    Tue

  • BOI–GSP, 09/09/2026: From $190
    09

    Wed

  • BOI–GSP, 09/10/2026: From $304
    10

    Thu

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    12

    Sat

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    13

    Sun

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    14

    Mon

  • BOI–GSP, 09/15/2026: From $223
    15

    Tue

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    16

    Wed

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    17

    Thu

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    18

    Fri

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    19

    Sat

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    21

    Mon

  • BOI–GSP, 09/22/2026: From $223
    22

    Tue

  • BOI–GSP: cmp-view-offers-disclaimer. Find Offers
    23

    Wed

  • BOI–GSP, 09/24/2026: From $364
    24

    Thu

    • Range$190-$574

    *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:
    Boise Airport
    Arriving at:
    Greenville-Spartanburg International Airport
    Distance:
    1905 miles

    Route Information

    30† 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 30 weekly flights from Boise to Greenville-Spartanburg on Southwest Airlines.
    To find the lowest fares by day and time to fly Boise to Greenville-Spartanburg with Southwest, check out our Low Fare Calendar.
    You can rent a car at Greenville-Spartanburg International Airport book yours with your flight.
    Yes! Flights from Boise to Greenville-Spartanburg—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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