Southwest® flights from Baltimore/Washington to Portland, ME from $109

Promo Code

Low fares from Baltimore/Washington to Portland, ME

$

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 09/11/2026

One-way

Basic

From
$109
Seen: 15 hrs ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 09/06/2026

One-way

Basic

From
$109
Seen: 18 minutes ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 09/05/2026

One-way

Basic

From
$109
Seen: 6 hrs ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 10/22/2026

One-way

Basic

From
$125
Seen: 23 hrs ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 09/16/2026

One-way

Basic

From
$125
Seen: 13 hrs ago

Baltimore/Washington (BWI)to

Portland, ME (PWM)
Depart: 09/02/2026

One-way

Basic

From
$125
Seen: 2 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Baltimore/Washington to Portland, ME

Aug 2026
From$125*
Seen: 29 minutes ago
One Way/Basic
Sep 2026
From$109*
Seen: 15 hrs ago
One Way/Basic
Oct 2026
From$125*
Seen: 2 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $125
cmp-daily-histogram-bars-legend-max-price-aria-label $403
Displaying fares for August-2026
  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    01

    Sat

    AUG

  • BWI–PWM, 08/02/2026: From $403
    02

    Sun

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    03

    Mon

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    04

    Tue

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    05

    Wed

  • BWI–PWM, 08/06/2026: From $403
    06

    Thu

  • BWI–PWM, 08/07/2026: From $342
    07

    Fri

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    08

    Sat

  • BWI–PWM, 08/09/2026: From $342
    09

    Sun

  • BWI–PWM, 08/10/2026: From $342
    10

    Mon

  • BWI–PWM, 08/11/2026: From $342
    11

    Tue

  • BWI–PWM, 08/12/2026: From $342
    12

    Wed

  • BWI–PWM, 08/13/2026: From $342
    13

    Thu

  • BWI–PWM, 08/14/2026: From $342
    14

    Fri

  • BWI–PWM, 08/15/2026: From $250
    15

    Sat

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    16

    Sun

  • BWI–PWM, 08/17/2026: From $250
    17

    Mon

  • BWI–PWM, 08/18/2026: From $250
    18

    Tue

  • BWI–PWM, 08/19/2026: From $250
    19

    Wed

  • BWI–PWM, 08/20/2026: From $250
    20

    Thu

  • BWI–PWM, 08/21/2026: From $207
    21

    Fri

  • BWI–PWM, 08/22/2026: From $156
    22

    Sat

  • BWI–PWM, 08/23/2026: From $207
    23

    Sun

  • BWI–PWM, 08/24/2026: From $125
    24

    Mon

  • BWI–PWM, 08/25/2026: From $125
    25

    Tue

  • BWI–PWM: cmp-view-offers-disclaimer. Find Offers
    26

    Wed

  • BWI–PWM, 08/27/2026: From $207
    27

    Thu

  • BWI–PWM, 08/28/2026: From $156
    28

    Fri

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

    Sat

  • BWI–PWM, 08/30/2026: From $196
    30

    Sun

  • BWI–PWM, 08/31/2026: From $125
    31

    Mon

    • Range$125-$403

    *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.

    Explore Flights from Other Popular Origins

    Popular Flights from Baltimore/Washington