Southwest® flights from St. Louis to San Francisco from $199

Promo Code

Low fares from St. Louis to San Francisco

$

St. Louis (STL)to

San Francisco (SFO)
Depart: 11/12/2026

One-way

Basic

From
$199
Seen: 21 hrs ago

St. Louis (STL)to

San Francisco (SFO)
Depart: 09/29/2026

One-way

Basic

From
$199
Seen: 22 hrs ago

St. Louis (STL)to

San Francisco (SFO)
Depart: 11/18/2026

One-way

Basic

From
$199
Seen: 22 hrs ago

St. Louis (STL)to

San Francisco (SFO)
Depart: 09/30/2026

One-way

Basic

From
$199
Seen: 22 hrs ago

St. Louis (STL)to

San Francisco (SFO)
Depart: 09/16/2026

One-way

Basic

From
$206
Seen: 5 hrs ago

St. Louis (STL)to

San Francisco (SFO)
Depart: 10/29/2026

One-way

Basic

From
$206
Seen: 4 hrs ago

Looking for more low-fare flights?

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Explore flights from St. Louis to San Francisco

Aug 2026
From$498*
Seen: 22 hrs ago
One Way/Basic
Sep 2026
From$199*
Seen: 22 hrs ago
One Way/Basic
Oct 2026
From$206*
Seen: 3 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $206
cmp-daily-histogram-bars-legend-max-price-aria-label $650
Displaying fares for August-2026
  • STL–SFO, 08/23/2026: From $650
    23

    Sun

    AUG

  • STL–SFO, 08/24/2026: From $640
    24

    Mon

  • STL–SFO, 08/25/2026: From $640
    25

    Tue

  • STL–SFO, 08/26/2026: From $640
    26

    Wed

  • STL–SFO, 08/27/2026: From $640
    27

    Thu

  • STL–SFO, 08/28/2026: From $640
    28

    Fri

  • STL–SFO, 08/29/2026: From $498
    29

    Sat

  • STL–SFO: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

  • STL–SFO, 08/31/2026: From $498
    31

    Mon

  • STL–SFO, 09/01/2026: From $498
    01

    Tue

    SEP

  • STL–SFO, 09/02/2026: From $498
    02

    Wed

  • STL–SFO, 09/03/2026: From $498
    03

    Thu

  • STL–SFO, 09/04/2026: From $498
    04

    Fri

  • STL–SFO, 09/05/2026: From $310
    05

    Sat

  • STL–SFO, 09/06/2026: From $310
    06

    Sun

  • STL–SFO, 09/07/2026: From $349
    07

    Mon

  • STL–SFO, 09/08/2026: From $320
    08

    Tue

  • STL–SFO: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • STL–SFO, 09/10/2026: From $310
    10

    Thu

  • STL–SFO, 09/11/2026: From $218
    11

    Fri

  • STL–SFO, 09/12/2026: From $216
    12

    Sat

  • STL–SFO, 09/13/2026: From $307
    13

    Sun

  • STL–SFO, 09/14/2026: From $307
    14

    Mon

  • STL–SFO, 09/15/2026: From $206
    15

    Tue

  • STL–SFO, 09/16/2026: From $206
    16

    Wed

  • STL–SFO, 09/17/2026: From $211
    17

    Thu

  • STL–SFO, 09/18/2026: From $239
    18

    Fri

  • STL–SFO, 09/19/2026: From $206
    19

    Sat

  • STL–SFO, 09/20/2026: From $280
    20

    Sun

  • STL–SFO, 09/21/2026: From $229
    21

    Mon

  • STL–SFO, 09/22/2026: From $216
    22

    Tue

    • Range$206-$650

    *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:
    Lambert-St Louis Int'l Airport
    Arriving at:
    San Francisco International Airport
    Average flight time:
    4 hours 14 minutes
    Distance:
    1735 miles

    Route Information

    153† 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 St. Louis to San Francisco is 4 hours 14 minutes.
    There are 153 weekly flights from St. Louis to San Francisco on Southwest Airlines.
    Yes, Southwest flies nonstop from St. Louis to San Francisco once per day from Monday through Friday.
    Yes, Southwest flies nonstop from St. Louis to San Francisco once per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly St. Louis to San Francisco with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Francisco International Airport book yours with your flight.
    Yes! Flights from St. Louis to San Francisco—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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