Southwest® flights from Boise to Baltimore/Washington from $152

Promo Code

Low fares from Boise to Baltimore/Washington

$

Boise (BOI)to

Baltimore/Washington (BWI)
Depart: 10/13/2026

One-way

Basic

From
$152
Seen: 16 hrs ago

Boise (BOI)to

Baltimore/Washington (BWI)
Depart: 12/16/2026

One-way

Basic

From
$162
Seen: 1 hour ago

Boise (BOI)to

Baltimore/Washington (BWI)
Depart: 11/05/2026

One-way

Basic

From
$185
Seen: 1 hour ago

Boise (BOI)to

Baltimore/Washington (BWI)
Depart: 10/02/2026

One-way

Basic

From
$190
Seen: 9 hrs ago

Boise (BOI)to

Baltimore/Washington (BWI)
Depart: 11/22/2026

One-way

Basic

From
$204
Seen: 22 hrs ago

Boise (BOI)to

Baltimore/Washington (BWI)
Depart: 11/01/2026

One-way

Basic

From
$204
Seen: 16 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 Boise to Baltimore/Washington

Sep 2026
From$269*
Seen: 20 hrs ago
One Way/Basic
Oct 2026
From$152*
Seen: 16 hrs ago
One Way/Basic
Nov 2026
From$185*
Seen: 1 hour ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $190
Displaying fares for September-2026
  • BOI–BWI, 09/11/2026: From $372
    11

    Fri

    SEP

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    12

    Sat

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    13

    Sun

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    14

    Mon

  • BOI–BWI, 09/15/2026: From $284
    15

    Tue

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

    Wed

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    17

    Thu

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

    Fri

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    19

    Sat

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

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

    Mon

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    22

    Tue

  • BOI–BWI, 09/23/2026: From $269
    23

    Wed

  • BOI–BWI, 09/24/2026: From $372
    24

    Thu

  • BOI–BWI, 09/25/2026: From $309
    25

    Fri

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

    Sat

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    27

    Sun

  • BOI–BWI, 09/28/2026: From $304
    28

    Mon

  • BOI–BWI, 09/29/2026: From $269
    29

    Tue

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    30

    Wed

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

    Thu

    OCT

  • BOI–BWI, 10/02/2026: From $190
    02

    Fri

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

    Sat

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

    Sun

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

    Mon

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    06

    Tue

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    07

    Wed

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

    Thu

  • BOI–BWI: cmp-view-offers-disclaimer. Find Offers
    09

    Fri

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

    Sat

    • Range$190-$372

    *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:
    Balt./Wash. International Airport
    Distance:
    2059 miles

    Route Information

    131† 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 131 weekly flights from Boise to Baltimore/Washington on Southwest Airlines.
    To find the lowest fares by day and time to fly Boise to Baltimore/Washington with Southwest, check out our Low Fare Calendar.
    You can rent a car at Balt./Wash. International Airport book yours with your flight.
    Yes! Flights from Boise to Baltimore/Washington—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 Boise