Southwest® flights from Kansas City to Boston from $140

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Low fares from Kansas City to Boston

$

Kansas City (MCI)to

Boston (BOS)
Depart: 11/12/2026

One-way

Basic

From
$140
Seen: 19 hrs ago

Kansas City (MCI)to

Boston (BOS)
Depart: 11/05/2026

One-way

Basic

From
$140
Seen: 9 hrs ago

Kansas City (MCI)to

Boston (BOS)
Depart: 10/28/2026

One-way

Basic

From
$140
Seen: 4 hrs ago

Kansas City (MCI)to

Boston (BOS)
Depart: 11/02/2026

One-way

Basic

From
$140
Seen: 1 hour ago

Kansas City (MCI)to

Boston (BOS)
Depart: 10/20/2026

One-way

Basic

From
$140
Seen: 13 hrs ago

Kansas City (MCI)to

Boston (BOS)
Depart: 10/17/2026

One-way

Basic

From
$140
Seen: 16 hrs ago

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Explore flights from Kansas City to Boston

Sep 2026
From$306*
Seen: 6 hrs ago
One Way/Basic
Oct 2026
From$140*
Seen: 16 hrs ago
One Way/Basic
Nov 2026
From$140*
Seen: 13 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $150
cmp-daily-histogram-bars-legend-max-price-aria-label $470
Displaying fares for September-2026
  • MCI–BOS, 09/11/2026: From $470
    11

    Fri

    SEP

  • MCI–BOS, 09/12/2026: From $465
    12

    Sat

  • MCI–BOS, 09/13/2026: From $465
    13

    Sun

  • MCI–BOS, 09/14/2026: From $470
    14

    Mon

  • MCI–BOS: cmp-view-offers-disclaimer. Find Offers
    15

    Tue

  • MCI–BOS, 09/16/2026: From $420
    16

    Wed

  • MCI–BOS, 09/17/2026: From $420
    17

    Thu

  • MCI–BOS: cmp-view-offers-disclaimer. Find Offers
    18

    Fri

  • MCI–BOS, 09/19/2026: From $425
    19

    Sat

  • MCI–BOS: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

  • MCI–BOS: cmp-view-offers-disclaimer. Find Offers
    21

    Mon

  • MCI–BOS, 09/22/2026: From $420
    22

    Tue

  • MCI–BOS, 09/23/2026: From $420
    23

    Wed

  • MCI–BOS, 09/24/2026: From $340
    24

    Thu

  • MCI–BOS, 09/25/2026: From $306
    25

    Fri

  • MCI–BOS: cmp-view-offers-disclaimer. Find Offers
    26

    Sat

  • MCI–BOS, 09/27/2026: From $311
    27

    Sun

  • MCI–BOS, 09/28/2026: From $306
    28

    Mon

  • MCI–BOS, 09/29/2026: From $306
    29

    Tue

  • MCI–BOS, 09/30/2026: From $306
    30

    Wed

  • MCI–BOS, 10/01/2026: From $249
    01

    Thu

    OCT

  • MCI–BOS, 10/02/2026: From $281
    02

    Fri

  • MCI–BOS, 10/03/2026: From $150
    03

    Sat

  • MCI–BOS, 10/04/2026: From $249
    04

    Sun

  • MCI–BOS: cmp-view-offers-disclaimer. Find Offers
    05

    Mon

  • MCI–BOS, 10/06/2026: From $150
    06

    Tue

  • MCI–BOS, 10/07/2026: From $150
    07

    Wed

  • MCI–BOS, 10/08/2026: From $311
    08

    Thu

  • MCI–BOS, 10/09/2026: From $283
    09

    Fri

  • MCI–BOS, 10/10/2026: From $222
    10

    Sat

    • Range$150-$470

    *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:
    Kansas City International Airport
    Arriving at:
    Logan International Airport
    Distance:
    1256 miles

    Route Information

    151† 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 151 weekly flights from Kansas City to Boston on Southwest Airlines.
    To find the lowest fares by day and time to fly Kansas City to Boston with Southwest, check out our Low Fare Calendar.
    You can rent a car at Logan International Airport book yours with your flight.
    Yes! Flights from Kansas City to Boston—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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