Southwest® flights from Philadelphia to Boston from $149

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Low fares from Philadelphia to Boston

$

Philadelphia (PHL)to

Boston (BOS)
Depart: 10/03/2026

One-way

Basic

From
$149
Seen: 1 hour ago

Philadelphia (PHL)to

Boston (BOS)
Depart: 09/09/2026

One-way

Basic

From
$159
Seen: 14 hrs ago

Philadelphia (PHL)to

Boston (BOS)
Depart: 09/16/2026

One-way

Basic

From
$174
Seen: 18 hrs ago

Philadelphia (PHL)to

Boston (BOS)
Depart: 10/16/2026

One-way

Basic

From
$174
Seen: 10 hrs ago

Philadelphia (PHL)to

Boston (BOS)
Depart: 10/15/2026

One-way

Basic

From
$174
Seen: 12 hrs ago

Philadelphia (PHL)to

Boston (BOS)
Depart: 10/03/2026

One-way

Choice

From
$184
Seen: 1 hour ago

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Explore flights from Philadelphia to Boston

Aug 2026
From$254*
Seen: 13 hrs ago
One Way/Basic
Sep 2026
From$159*
Seen: 14 hrs ago
One Way/Basic
Oct 2026
From$149*
Seen: 1 hour ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $159
cmp-daily-histogram-bars-legend-max-price-aria-label $517
Displaying fares for August-2026
  • PHL–BOS, 08/22/2026: From $347
    22

    Sat

    AUG

  • PHL–BOS, 08/23/2026: From $517
    23

    Sun

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    24

    Mon

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    25

    Tue

  • PHL–BOS, 08/26/2026: From $312
    26

    Wed

  • PHL–BOS, 08/27/2026: From $312
    27

    Thu

  • PHL–BOS, 08/28/2026: From $254
    28

    Fri

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

  • PHL–BOS, 08/31/2026: From $254
    31

    Mon

  • PHL–BOS, 09/01/2026: From $254
    01

    Tue

    SEP

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    02

    Wed

  • PHL–BOS, 09/03/2026: From $254
    03

    Thu

  • PHL–BOS, 09/04/2026: From $269
    04

    Fri

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

    Sat

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • PHL–BOS, 09/07/2026: From $328
    07

    Mon

  • PHL–BOS, 09/08/2026: From $214
    08

    Tue

  • PHL–BOS, 09/09/2026: From $159
    09

    Wed

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    12

    Sat

  • PHL–BOS, 09/13/2026: From $269
    13

    Sun

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    14

    Mon

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

    Tue

  • PHL–BOS, 09/16/2026: From $174
    16

    Wed

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    17

    Thu

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

    Fri

  • PHL–BOS: cmp-view-offers-disclaimer. Find Offers
    19

    Sat

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    20

    Sun

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

    Mon

    • Range$159-$517

    *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:
    Philadelphia International Airport
    Arriving at:
    Logan International Airport
    Distance:
    280 miles

    Route Information

    20† 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 20 weekly flights from Philadelphia to Boston on Southwest Airlines.
    To find the lowest fares by day and time to fly Philadelphia 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 Philadelphia 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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