Southwest® flights from Baltimore/Washington to San Diego from $149

Promo Code

Low fares from Baltimore/Washington to San Diego

$

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 09/29/2026

One-way

Basic

From
$149
Seen: 20 hrs ago

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 09/19/2026

One-way

Basic

From
$149
Seen: 22 hrs ago

Baltimore/Washington (BWI)to

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

One-way

Basic

From
$149
Seen: 9 hrs ago

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 10/03/2026

One-way

Basic

From
$149
Seen: 14 hrs ago

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 09/23/2026

One-way

Basic

From
$149
Seen: 12 hrs ago

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 11/07/2026

One-way

Basic

From
$149
Seen: 16 hrs ago

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Explore flights from Baltimore/Washington to San Diego

Aug 2026
From$374*
Seen: 7 hrs ago
One Way/Basic
Sep 2026
From$149*
Seen: 22 hrs ago
One Way/Basic
Oct 2026
From$149*
Seen: 8 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $149
cmp-daily-histogram-bars-legend-max-price-aria-label $484
Displaying fares for August-2026
  • BWI–SAN, 08/20/2026: From $474
    20

    Thu

    AUG

  • BWI–SAN, 08/21/2026: From $474
    21

    Fri

  • BWI–SAN, 08/22/2026: From $484
    22

    Sat

  • BWI–SAN, 08/23/2026: From $474
    23

    Sun

  • BWI–SAN, 08/24/2026: From $474
    24

    Mon

  • BWI–SAN, 08/25/2026: From $384
    25

    Tue

  • BWI–SAN, 08/26/2026: From $384
    26

    Wed

  • BWI–SAN, 08/27/2026: From $374
    27

    Thu

  • BWI–SAN, 08/28/2026: From $374
    28

    Fri

  • BWI–SAN, 08/29/2026: From $384
    29

    Sat

  • BWI–SAN, 08/30/2026: From $374
    30

    Sun

  • BWI–SAN, 08/31/2026: From $374
    31

    Mon

  • BWI–SAN, 09/01/2026: From $289
    01

    Tue

    SEP

  • BWI–SAN, 09/02/2026: From $289
    02

    Wed

  • BWI–SAN, 09/03/2026: From $279
    03

    Thu

  • BWI–SAN, 09/04/2026: From $279
    04

    Fri

  • BWI–SAN, 09/05/2026: From $289
    05

    Sat

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

    Sun

  • BWI–SAN, 09/07/2026: From $304
    07

    Mon

  • BWI–SAN, 09/08/2026: From $233
    08

    Tue

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

    Wed

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

    Thu

  • BWI–SAN, 09/11/2026: From $179
    11

    Fri

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

    Sat

  • BWI–SAN, 09/13/2026: From $344
    13

    Sun

  • BWI–SAN, 09/14/2026: From $179
    14

    Mon

  • BWI–SAN, 09/15/2026: From $159
    15

    Tue

  • BWI–SAN, 09/16/2026: From $159
    16

    Wed

  • BWI–SAN, 09/17/2026: From $294
    17

    Thu

  • BWI–SAN, 09/18/2026: From $179
    18

    Fri

  • BWI–SAN, 09/19/2026: From $149
    19

    Sat

    • Range$149-$484

    *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:
    Balt./Wash. International Airport
    Arriving at:
    San Diego International Airport
    Average flight time:
    5 hours 35 minutes
    Distance:
    2295 miles

    Route Information

    156† Weekly flights
    • 3‡ Nonstop flights per day Monday through Friday
    • 2‡ Nonstop flights on Saturday
    • 3‡ Nonstop flights on Sunday

    † 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

    The average flight time from Baltimore/Washington to San Diego is 5 hours 35 minutes.
    There are 156 weekly flights from Baltimore/Washington to San Diego on Southwest Airlines.
    Yes, Southwest flies nonstop from Baltimore/Washington to San Diego 3 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Baltimore/Washington to San Diego 2 times per day on Saturdays and 3 times per day on Sundays.
    To find the lowest fares by day and time to fly Baltimore/Washington 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 Baltimore/Washington 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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