Southwest® flights from Baltimore/Washington to San Diego from $159

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Low fares from Baltimore/Washington to San Diego

$

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 10/31/2026

One-way

Basic

From
$159
Seen: 21 hrs ago

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 11/09/2026

One-way

Basic

From
$159
Seen: 9 hrs ago

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 10/29/2026

One-way

Basic

From
$159
Seen: 7 hrs ago

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 11/02/2026

One-way

Basic

From
$159
Seen: 20 hrs ago

Baltimore/Washington (BWI)to

San Diego (SAN)
Depart: 10/19/2026

One-way

Basic

From
$159
Seen: 19 hrs ago

Baltimore/Washington (BWI)to

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

One-way

Basic

From
$159
Seen: 11 hrs ago

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Explore flights from Baltimore/Washington to San Diego

Sep 2026
From$529*
Seen: 14 hrs ago
One Way/Basic
Oct 2026
From$159*
Seen: 19 hrs ago
One Way/Basic
Nov 2026
From$159*
Seen: 6 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $159
cmp-daily-histogram-bars-legend-max-price-aria-label $539
Displaying fares for September-2026
  • BWI–SAN: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

    SEP

  • BWI–SAN, 09/30/2026: From $529
    30

    Wed

  • BWI–SAN, 10/01/2026: From $539
    01

    Thu

    OCT

  • BWI–SAN, 10/02/2026: From $529
    02

    Fri

  • BWI–SAN, 10/03/2026: From $529
    03

    Sat

  • BWI–SAN, 10/04/2026: From $529
    04

    Sun

  • BWI–SAN, 10/05/2026: From $394
    05

    Mon

  • BWI–SAN, 10/06/2026: From $394
    06

    Tue

  • BWI–SAN, 10/07/2026: From $394
    07

    Wed

  • BWI–SAN, 10/08/2026: From $394
    08

    Thu

  • BWI–SAN, 10/09/2026: From $394
    09

    Fri

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

    Sat

  • BWI–SAN, 10/11/2026: From $444
    11

    Sun

  • BWI–SAN, 10/12/2026: From $299
    12

    Mon

  • BWI–SAN, 10/13/2026: From $299
    13

    Tue

  • BWI–SAN, 10/14/2026: From $299
    14

    Wed

  • BWI–SAN, 10/15/2026: From $299
    15

    Thu

  • BWI–SAN, 10/16/2026: From $299
    16

    Fri

  • BWI–SAN, 10/17/2026: From $299
    17

    Sat

  • BWI–SAN, 10/18/2026: From $339
    18

    Sun

  • BWI–SAN, 10/19/2026: From $159
    19

    Mon

  • BWI–SAN, 10/20/2026: From $159
    20

    Tue

  • BWI–SAN, 10/21/2026: From $169
    21

    Wed

  • BWI–SAN, 10/22/2026: From $159
    22

    Thu

  • BWI–SAN, 10/23/2026: From $174
    23

    Fri

  • BWI–SAN, 10/24/2026: From $214
    24

    Sat

  • BWI–SAN, 10/25/2026: From $239
    25

    Sun

  • BWI–SAN, 10/26/2026: From $159
    26

    Mon

  • BWI–SAN, 10/27/2026: From $159
    27

    Tue

  • BWI–SAN, 10/28/2026: From $159
    28

    Wed

    • Range$159-$539

    *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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