Southwest® flights from Santa Rosa to Ontario/LA
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1 Passenger
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today
Low fares from Santa Rosa to Ontario/LA
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$
Santa Rosa (STS)to
Ontario/LA (ONT)
Depart: 05/06/2026
One-way
Basic
From
$129
Low fares from Santa Rosa to Ontario/LA
$
Santa Rosa (STS)to
Ontario/LA (ONT)
Depart: 05/06/2026
One-way
Basic
From
$129
Seen: 21 hrs ago
Santa Rosa (STS)to
Ontario/LA (ONT)
Depart: 05/06/2026
One-way
Choice
From
$159
Seen: 21 hrs ago
Santa Rosa (STS)to
Ontario/LA (ONT)
Depart: 05/03/2026
One-way
Basic
From
$184
Seen: 4 hrs ago
Santa Rosa (STS)to
Ontario/LA (ONT)
Depart: 05/03/2026
One-way
Choice
From
$214
Seen: 4 hrs ago
Santa Rosa (STS)to
Ontario/LA (ONT)
Depart: 05/06/2026
One-way
Choice Preferred
From
$229
Seen: 21 hrs ago
Santa Rosa (STS)to
Ontario/LA (ONT)
Depart: 05/06/2026
One-way
Choice Extra
From
$269
Seen: 21 hrs ago
Explore flights from Santa Rosa to Ontario/LA
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Flight Details
Departing from:
Charles M. Schulz–Sonoma County Airport
Arriving at:
LA/Ontario International Airport
Distance:
423 miles
Route Information
27† 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 27 weekly flights from Santa Rosa to Ontario/LA on Southwest Airlines.
To find the lowest fares by day and time to fly Santa Rosa to Ontario/LA with Southwest, check out our Low Fare Calendar.
You can rent a car at LA/Ontario International Airport book yours with your flight.
Yes! Flights from Santa Rosa to Ontario/LA—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.