Southwest® flights from Philadelphia to San Diego from $161

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Low fares from Philadelphia to San Diego

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Philadelphia (PHL)to

San Diego (SAN)
Depart: 01/09/2027

One-way

Basic

From
$161
Seen: 7 hrs ago

Philadelphia (PHL)to

San Diego (SAN)
Depart: 12/09/2026

One-way

Basic

From
$161
Seen: 14 hrs ago

Philadelphia (PHL)to

San Diego (SAN)
Depart: 11/18/2026

One-way

Basic

From
$161
Seen: 8 hrs ago

Philadelphia (PHL)to

San Diego (SAN)
Depart: 12/17/2026

One-way

Basic

From
$170
Seen: 21 hrs ago

Philadelphia (PHL)to

San Diego (SAN)
Depart: 12/11/2026

One-way

Basic

From
$173
Seen: 18 hrs ago

Philadelphia (PHL)to

San Diego (SAN)
Depart: 12/10/2026

One-way

Basic

From
$174
Seen: 18 hrs ago

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Explore flights from Philadelphia to San Diego

Oct 2026
From$275*
Seen: 1 hour ago
One Way/Basic
Nov 2026
From$161*
Seen: 8 hrs ago
One Way/Basic
Dec 2026
From$161*
Seen: 14 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $161
cmp-daily-histogram-bars-legend-max-price-aria-label $338
Displaying fares for October-2026
  • PHL–SAN: cmp-view-offers-disclaimer. Find Offers
    20

    Tue

    OCT

  • PHL–SAN, 10/21/2026: From $286
    21

    Wed

  • PHL–SAN, 10/22/2026: From $275
    22

    Thu

  • PHL–SAN, 10/23/2026: From $338
    23

    Fri

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

    Sat

  • PHL–SAN, 10/25/2026: From $338
    25

    Sun

  • PHL–SAN, 10/26/2026: From $338
    26

    Mon

  • PHL–SAN, 10/27/2026: From $286
    27

    Tue

  • PHL–SAN, 10/28/2026: From $286
    28

    Wed

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

    Thu

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

    Fri

  • PHL–SAN, 10/31/2026: From $286
    31

    Sat

  • PHL–SAN, 11/01/2026: From $333
    01

    Sun

    NOV

  • PHL–SAN, 11/02/2026: From $329
    02

    Mon

  • PHL–SAN, 11/03/2026: From $286
    03

    Tue

  • PHL–SAN: cmp-view-offers-disclaimer. Find Offers
    04

    Wed

  • PHL–SAN, 11/05/2026: From $329
    05

    Thu

  • PHL–SAN, 11/06/2026: From $329
    06

    Fri

  • PHL–SAN: cmp-view-offers-disclaimer. Find Offers
    07

    Sat

  • PHL–SAN, 11/08/2026: From $334
    08

    Sun

  • PHL–SAN, 11/09/2026: From $178
    09

    Mon

  • PHL–SAN, 11/10/2026: From $178
    10

    Tue

  • PHL–SAN, 11/11/2026: From $183
    11

    Wed

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

    Thu

  • PHL–SAN: cmp-view-offers-disclaimer. Find Offers
    13

    Fri

  • PHL–SAN, 11/14/2026: From $178
    14

    Sat

  • PHL–SAN, 11/15/2026: From $178
    15

    Sun

  • PHL–SAN: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

  • PHL–SAN, 11/17/2026: From $182
    17

    Tue

  • PHL–SAN, 11/18/2026: From $161
    18

    Wed

  • PHL–SAN, 11/19/2026: From $274
    19

    Thu

    • Range$161-$338

    *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:
    San Diego International Airport
    Distance:
    2370 miles

    Questions we hear the most

    There are 142 weekly flights from Philadelphia to San Diego on Southwest Airlines.
    To find the lowest fares by day and time to fly Philadelphia to San Diego with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Diego International Airport book yours with your flight.
    Yes! Flights from Philadelphia to San Diego—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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