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Southwest® flights from Grand Rapids to Portland, ME from $178

Promo Code

Low fares from Grand Rapids to Portland, ME

$

Grand Rapids (GRR)to

Portland, ME (PWM)
Depart: 07/28/2026

One-way

Basic

From
$178
Seen: 19 hrs ago

Grand Rapids (GRR)to

Portland, ME (PWM)
Depart: 06/16/2026

One-way

Basic

From
$178
Seen: 10 hrs ago

Grand Rapids (GRR)to

Portland, ME (PWM)
Depart: 05/27/2026

One-way

Basic

From
$204
Seen: 22 hrs ago

Grand Rapids (GRR)to

Portland, ME (PWM)
Depart: 07/23/2026

One-way

Basic

From
$204
Seen: 16 hrs ago

Grand Rapids (GRR)to

Portland, ME (PWM)
Depart: 06/16/2026

One-way

Choice

From
$218
Seen: 10 hrs ago

Grand Rapids (GRR)to

Portland, ME (PWM)
Depart: 07/28/2026

One-way

Choice

From
$218
Seen: 19 hrs ago

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Explore flights from Grand Rapids to Portland, ME

May 2026
From$204*
Seen: 22 hrs ago
One Way/Basic
Jun 2026
From$178*
Seen: 10 hrs ago
One Way/Basic
Jul 2026
From$178*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $204
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    • Range$204-$489

    *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:
    Kent County International Airport
    Arriving at:
    Portland International Jetport
    Distance:
    768 miles

    Route Information

    47† 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 47 weekly flights from Grand Rapids to Portland, ME on Southwest Airlines.
    To find the lowest fares by day and time to fly Grand Rapids 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 Grand Rapids 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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