Southwest® flights from Boston to Philadelphia from $128

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Low fares from Boston to Philadelphia

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Boston (BOS)to

Philadelphia (PHL)
Depart: 08/26/2026

One-way

Basic

From
$128
Seen: 16 hrs ago

Boston (BOS)to

Philadelphia (PHL)
Depart: 08/26/2026

One-way

Choice

From
$163
Seen: 16 hrs ago

Boston (BOS)to

Philadelphia (PHL)
Depart: 10/17/2026

One-way

Basic

From
$202
Seen: 8 hrs ago

Boston (BOS)to

Philadelphia (PHL)
Depart: 09/18/2026

One-way

Basic

From
$202
Seen: 6 hrs ago

Boston (BOS)to

Philadelphia (PHL)
Depart: 10/11/2026

One-way

Basic

From
$207
Seen: 15 hrs ago

Boston (BOS)to

Philadelphia (PHL)
Depart: 08/27/2026

One-way

Basic

From
$209
Seen: 8 hrs ago

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Explore flights from Boston to Philadelphia

Aug 2026
From$128*
Seen: 16 hrs ago
One Way/Basic
Sep 2026
From$202*
Seen: 6 hrs ago
One Way/Basic
Oct 2026
From$202*
Seen: 8 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $128
cmp-daily-histogram-bars-legend-max-price-aria-label $547
Displaying fares for August-2026
  • BOS–PHL: cmp-view-offers-disclaimer. Find Offers
    09

    Sun

    AUG

  • BOS–PHL, 08/10/2026: From $547
    10

    Mon

  • BOS–PHL, 08/11/2026: From $364
    11

    Tue

  • BOS–PHL, 08/12/2026: From $364
    12

    Wed

  • BOS–PHL, 08/13/2026: From $373
    13

    Thu

  • BOS–PHL, 08/14/2026: From $368
    14

    Fri

  • BOS–PHL, 08/15/2026: From $412
    15

    Sat

  • BOS–PHL, 08/16/2026: From $547
    16

    Sun

  • BOS–PHL, 08/17/2026: From $407
    17

    Mon

  • BOS–PHL, 08/18/2026: From $276
    18

    Tue

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

    Wed

  • BOS–PHL, 08/20/2026: From $288
    20

    Thu

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

    Fri

  • BOS–PHL, 08/22/2026: From $281
    22

    Sat

  • BOS–PHL, 08/23/2026: From $390
    23

    Sun

  • BOS–PHL, 08/24/2026: From $214
    24

    Mon

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

    Tue

  • BOS–PHL, 08/26/2026: From $128
    26

    Wed

  • BOS–PHL, 08/27/2026: From $209
    27

    Thu

  • BOS–PHL: cmp-view-offers-disclaimer. Find Offers
    28

    Fri

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

    Sat

  • BOS–PHL, 08/30/2026: From $247
    30

    Sun

  • BOS–PHL: cmp-view-offers-disclaimer. Find Offers
    31

    Mon

  • BOS–PHL: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

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

    Wed

  • BOS–PHL: cmp-view-offers-disclaimer. Find Offers
    03

    Thu

  • BOS–PHL, 09/04/2026: From $219
    04

    Fri

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

    Sat

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

    Sun

  • BOS–PHL, 09/07/2026: From $258
    07

    Mon

  • BOS–PHL: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

    • Range$128-$547

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

    Route Information

    33† 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 33 weekly flights from Boston to Philadelphia on Southwest Airlines.
    To find the lowest fares by day and time to fly Boston to Philadelphia with Southwest, check out our Low Fare Calendar.
    You can rent a car at Philadelphia International Airport book yours with your flight.
    Yes! Flights from Boston to Philadelphia—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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