Southwest® flights from Ontario/LA to Santa Rosa from $165

Promo Code
St. Marteen

Visit Santa Rosa


Discover the best of Sonoma County (Santa Rosa) and unwind with world-class wines and stunning views of the redwoods.

Flights available to book today. Service starts April 7, 2026.

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Low fares from Ontario/LA to Santa Rosa

$

Ontario/LA (ONT)to

Santa Rosa (STS)
Depart: 05/05/2026

One-way

Basic

From
$134

Low fares from Ontario/LA to Santa Rosa

$

Ontario/LA (ONT)to

Santa Rosa (STS)
Depart: 05/05/2026

One-way

Basic

From
$134
Seen: 9 hrs ago

Ontario/LA (ONT)to

Santa Rosa (STS)
Depart: 05/05/2026

One-way

Choice

From
$164
Seen: 9 hrs ago

Ontario/LA (ONT)to

Santa Rosa (STS)
Depart: 04/08/2026

One-way

Basic

From
$165
Seen: 9 hrs ago

Ontario/LA (ONT)to

Santa Rosa (STS)
Depart: 04/08/2026

One-way

Choice

From
$195
Seen: 9 hrs ago

Ontario/LA (ONT)to

Santa Rosa (STS)
Depart: 05/05/2026

One-way

Choice Preferred

From
$234
Seen: 9 hrs ago

Ontario/LA (ONT)to

Santa Rosa (STS)
Depart: 04/20/2026

One-way

Basic

From
$265
Seen: 6 hrs ago

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Explore flights from Ontario/LA to Santa Rosa

*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:
LA/Ontario International Airport
Arriving at:
Charles M. Schulz–Sonoma County Airport
Distance:
423 miles

Route Information

30† Weekly flights

† 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

There are 30 weekly flights from Ontario/LA to Santa Rosa on Southwest Airlines.
To find the lowest fares by day and time to fly Ontario/LA to Santa Rosa with Southwest, check out our Low Fare Calendar.
You can rent a car at Charles M. Schulz–Sonoma County Airport book yours with your flight.
Yes! Flights from Ontario/LA to Santa Rosa—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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