Southwest® flights from Knoxville to Portland, ME from $139

Promo Code

Low fares from Knoxville to Portland, ME

$

Knoxville (TYS)to

Portland, ME (PWM)
Depart: 11/18/2026

One-way

Basic

From
$139

Low fares from Knoxville to Portland, ME

$

Knoxville (TYS)to

Portland, ME (PWM)
Depart: 11/18/2026

One-way

Basic

From
$139
Seen: 11 hrs ago

Knoxville (TYS)to

Portland, ME (PWM)
Depart: 11/18/2026

One-way

Choice

From
$179
Seen: 11 hrs ago

Knoxville (TYS)to

Portland, ME (PWM)
Depart: 11/18/2026

One-way

Choice Preferred

From
$249
Seen: 11 hrs ago

Knoxville (TYS)to

Portland, ME (PWM)
Depart: 11/18/2026

One-way

Choice Extra

From
$294
Seen: 11 hrs ago

Knoxville (TYS)to

Portland, ME (PWM)
Depart: 10/31/2026

One-way

Choice

From
$303
Seen: 16 hrs ago

Knoxville (TYS)to

Portland, ME (PWM)
Depart: 10/31/2026

One-way

Choice Preferred

From
$373
Seen: 16 hrs ago

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Explore flights from Knoxville to Portland, ME

Oct 2026
From$303*
Seen: 16 hrs ago
One Way/Basic
Nov 2026
From$139*
Seen: 11 hrs ago
One Way/Basic
Dec 2026
No result for this month.
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Displaying fares for October-2026
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  • TYS–PWM, 11/18/2026: From $139
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    • Range$139-$374

    *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:
    Mc Ghee Tyson Airport
    Arriving at:
    Portland International Jetport
    Distance:
    906 miles

    Questions we hear the most

    There are 34 weekly flights from Knoxville to Portland, ME on Southwest Airlines.
    To find the lowest fares by day and time to fly Knoxville 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 Knoxville 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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