Southwest® flights from Greenville-Spartanburg to Portland, ME from $188

Promo Code

Low fares from Greenville-Spartanburg to Portland, ME

$

Greenville-Spartanburg (GSP)to

Portland, ME (PWM)
Depart: 05/07/2026

One-way

Basic

From
$188
Seen: 12 hrs ago

Greenville-Spartanburg (GSP)to

Portland, ME (PWM)
Depart: 05/13/2026

One-way

Basic

From
$193
Seen: 10 hrs ago

Greenville-Spartanburg (GSP)to

Portland, ME (PWM)
Depart: 05/08/2026

One-way

Basic

From
$209
Seen: 15 hrs ago

Greenville-Spartanburg (GSP)to

Portland, ME (PWM)
Depart: 06/25/2026

One-way

Basic

From
$215
Seen: 17 hrs ago

Greenville-Spartanburg (GSP)to

Portland, ME (PWM)
Depart: 05/07/2026

One-way

Choice

From
$223
Seen: 12 hrs ago

Greenville-Spartanburg (GSP)to

Portland, ME (PWM)
Depart: 05/13/2026

One-way

Choice

From
$228
Seen: 10 hrs ago

Looking for more low-fare flights?

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Find low fares

Explore flights from Greenville-Spartanburg to Portland, ME

Mar 2026
From$479*
Seen: 4 hrs ago
One Way/Basic
Apr 2026
From$244*
Seen: 15 hrs ago
One Way/Basic
May 2026
From$188*
Seen: 12 hrs ago
One Way/Basic
$244
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    • Range$244-$479

    *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:
    Portland International Jetport
    Distance:
    877 miles

    Route Information

    39† 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 39 weekly flights from Greenville-Spartanburg to Portland, ME on Southwest Airlines.
    To find the lowest fares by day and time to fly Greenville-Spartanburg to Portland, ME with Southwest, check out our Low Fare Calendar.
    You can rent a car at Portland International Jetport book yours with your flight.
    Yes! Flights from Greenville-Spartanburg to Portland, ME—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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