Southwest® flights from Baltimore/Washington to Portland, ME from $139

Promo Code

Low fares from Baltimore/Washington to Portland, ME

$

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 11/03/2026

One-way

Basic

From
$139
Seen: 18 hrs ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 11/10/2026

One-way

Basic

From
$139
Seen: 17 hrs ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 12/01/2026

One-way

Basic

From
$139
Seen: 17 hrs ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 10/13/2026

One-way

Basic

From
$139
Seen: 17 hrs ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 10/27/2026

One-way

Basic

From
$139
Seen: 16 hrs ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 12/17/2026

One-way

Basic

From
$139
Seen: 23 hrs ago

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Explore flights from Baltimore/Washington to Portland, ME

Sep 2026
From$362*
Seen: 1 hour ago
One Way/Basic
Oct 2026
From$139*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$139*
Seen: 20 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $139
cmp-daily-histogram-bars-legend-max-price-aria-label $423
Displaying fares for September-2026
  • BWI–PWM, 09/22/2026: From $423
    22

    Tue

    SEP

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    23

    Wed

  • BWI–PWM, 09/24/2026: From $423
    24

    Thu

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    25

    Fri

  • BWI–PWM, 09/26/2026: From $423
    26

    Sat

  • BWI–PWM, 09/27/2026: From $362
    27

    Sun

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    28

    Mon

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

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    30

    Wed

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    01

    Thu

    OCT

  • BWI–PWM, 10/02/2026: From $362
    02

    Fri

  • BWI–PWM, 10/03/2026: From $362
    03

    Sat

  • BWI–PWM, 10/04/2026: From $270
    04

    Sun

  • BWI–PWM, 10/05/2026: From $270
    05

    Mon

  • BWI–PWM, 10/06/2026: From $270
    06

    Tue

  • BWI–PWM, 10/07/2026: From $270
    07

    Wed

  • BWI–PWM, 10/08/2026: From $362
    08

    Thu

  • BWI–PWM, 10/09/2026: From $310
    09

    Fri

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    10

    Sat

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

  • BWI–PWM, 10/12/2026: From $227
    12

    Mon

  • BWI–PWM, 10/13/2026: From $139
    13

    Tue

  • BWI–PWM, 10/14/2026: From $181
    14

    Wed

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    15

    Thu

  • BWI–PWM, 10/16/2026: From $156
    16

    Fri

  • BWI–PWM, 10/17/2026: From $139
    17

    Sat

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    18

    Sun

  • BWI–PWM, 10/19/2026: From $139
    19

    Mon

  • BWI–PWM, 10/20/2026: From $139
    20

    Tue

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    21

    Wed

    • Range$139-$423

    *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:
    Balt./Wash. International Airport
    Arriving at:
    Portland International Jetport
    Average flight time:
    1 hour 30 minutes
    Distance:
    452 miles

    Route Information

    24† Weekly flights
    • 4‡ Nonstop flights per day Monday through Friday
    • 4‡ Nonstop flights on Saturday
    • 4‡ Nonstop flights on Sunday

    † 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

    The average flight time from Baltimore/Washington to Portland, ME is 1 hour 30 minutes.
    There are 24 weekly flights from Baltimore/Washington to Portland, ME on Southwest Airlines.
    Yes, Southwest flies nonstop from Baltimore/Washington to Portland, ME 4 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Baltimore/Washington to Portland, ME 4 times per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Baltimore/Washington 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 Baltimore/Washington 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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