Southwest® flights from Boise to Portland, ME from $235

Promo Code

Low fares from Boise to Portland, ME

$

Boise (BOI)to

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

One-way

Basic

From
$235
Seen: 19 hrs ago

Boise (BOI)to

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

One-way

Choice

From
$280
Seen: 19 hrs ago

Boise (BOI)to

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

One-way

Basic

From
$290
Seen: 16 hrs ago

Boise (BOI)to

Portland, ME (PWM)
Depart: 07/08/2026

One-way

Basic

From
$290
Seen: 16 hrs ago

Boise (BOI)to

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

One-way

Choice

From
$335
Seen: 16 hrs ago

Boise (BOI)to

Portland, ME (PWM)
Depart: 07/08/2026

One-way

Choice

From
$335
Seen: 16 hrs ago

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Explore flights from Boise to Portland, ME

Try alternate month or interact with individual days below in order to find offers.
Apr 2026
No result for this month.
May 2026
From$235*
Seen: 19 hrs ago
One Way/Basic
Jun 2026
No result for this month.
$235
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    • Range$235

    *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:
    Portland International Jetport
    Distance:
    2273 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 Portland, ME on Southwest Airlines.
    To find the lowest fares by day and time to fly Boise 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 Boise 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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