Southwest® flights from Boise to San Diego from $59

Promo Code

Low fares from Boise to San Diego

$

Boise (BOI)to

San Diego (SAN)
Depart: 09/30/2026

One-way

Basic

From
$59
Seen: 20 hrs ago

Boise (BOI)to

San Diego (SAN)
Depart: 10/06/2026

One-way

Basic

From
$59
Seen: 20 hrs ago

Boise (BOI)to

San Diego (SAN)
Depart: 09/05/2026

One-way

Basic

From
$59
Seen: 17 hrs ago

Boise (BOI)to

San Diego (SAN)
Depart: 10/07/2026

One-way

Basic

From
$59
Seen: 11 hrs ago

Boise (BOI)to

San Diego (SAN)
Depart: 09/22/2026

One-way

Basic

From
$59
Seen: 10 hrs ago

Boise (BOI)to

San Diego (SAN)
Depart: 09/15/2026

One-way

Basic

From
$59
Seen: 21 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Boise to San Diego

Jul 2026
From$209*
Seen: 15 hrs ago
One Way/Basic
Aug 2026
From$69*
Seen: 16 hrs ago
One Way/Basic
Sep 2026
From$59*
Seen: 20 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $69
cmp-daily-histogram-bars-legend-max-price-aria-label $259
Displaying fares for July-2026
  • BOI–SAN, 07/31/2026: From $209
    31

    Fri

    JUL

  • BOI–SAN, 08/01/2026: From $219
    01

    Sat

  • BOI–SAN, 08/02/2026: From $259
    02

    Sun

  • BOI–SAN, 08/03/2026: From $169
    03

    Mon

  • BOI–SAN, 08/04/2026: From $179
    04

    Tue

  • BOI–SAN, 08/05/2026: From $169
    05

    Wed

  • BOI–SAN, 08/06/2026: From $169
    06

    Thu

  • BOI–SAN, 08/07/2026: From $159
    07

    Fri

  • BOI–SAN: cmp-view-offers-disclaimer. Find Offers
    08

    Sat

  • BOI–SAN, 08/09/2026: From $179
    09

    Sun

  • BOI–SAN, 08/10/2026: From $139
    10

    Mon

  • BOI–SAN, 08/11/2026: From $139
    11

    Tue

  • BOI–SAN, 08/12/2026: From $139
    12

    Wed

  • BOI–SAN, 08/13/2026: From $109
    13

    Thu

  • BOI–SAN, 08/14/2026: From $109
    14

    Fri

  • BOI–SAN: cmp-view-offers-disclaimer. Find Offers
    15

    Sat

  • BOI–SAN, 08/16/2026: From $149
    16

    Sun

  • BOI–SAN: cmp-view-offers-disclaimer. Find Offers
    17

    Mon

  • BOI–SAN: cmp-view-offers-disclaimer. Find Offers
    18

    Tue

  • BOI–SAN, 08/19/2026: From $109
    19

    Wed

  • BOI–SAN, 08/20/2026: From $79
    20

    Thu

  • BOI–SAN, 08/21/2026: From $109
    21

    Fri

  • BOI–SAN: cmp-view-offers-disclaimer. Find Offers
    22

    Sat

  • BOI–SAN, 08/23/2026: From $149
    23

    Sun

  • BOI–SAN, 08/24/2026: From $79
    24

    Mon

  • BOI–SAN, 08/25/2026: From $79
    25

    Tue

  • BOI–SAN, 08/26/2026: From $69
    26

    Wed

  • BOI–SAN, 08/27/2026: From $69
    27

    Thu

  • BOI–SAN, 08/28/2026: From $69
    28

    Fri

  • BOI–SAN, 08/29/2026: From $69
    29

    Sat

  • BOI–SAN, 08/30/2026: From $69
    30

    Sun

    • Range$69-$259

    *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:
    Boise Airport
    Arriving at:
    San Diego International Airport
    Average flight time:
    2 hours 14 minutes
    Distance:
    749 miles

    Route Information

    146† Weekly flights
    • 1‡ Nonstop flight per day Monday through Friday
    • 1‡ Nonstop flight on Saturday
    • 1‡ Nonstop flight 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 Boise to San Diego is 2 hours 14 minutes.
    There are 146 weekly flights from Boise to San Diego on Southwest Airlines.
    Yes, Southwest flies nonstop from Boise to San Diego once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Boise to San Diego once per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Boise 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 Boise 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.

    Explore Flights from Other Popular Origins

    Popular Flights from Boise