$59 Cheap Flights from San Diego (SAN) to Santa Rosa (STS)

View $59 flight on Wed, Mar 4, 2026Opens in a new window

Popular airlines from San Diego Intl. Airport (SAN) to Santa Rosa, CA (STS-Sonoma County)

Cheap Flights from San Diego to Santa Rosa (SAN-STS)

Prices were available within the past 7 days and start at $59 for one-way flights and $117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Dec 10 - Sat, Dec 13
SAN
San Diego
STS
Santa Rosa
$117 Roundtrip, found 1 day ago
$117
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Dec 10 from San Diego to Santa Rosa, returning Sat, Dec 13, priced at $117 found 1 day ago
Alaska Airlines
Fri, Dec 12 - Sat, Dec 13
SAN
San Diego
STS
Santa Rosa
$132 Roundtrip, found 6 hours ago
$132
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Fri, Dec 12 from San Diego to Santa Rosa, returning Sat, Dec 13, priced at $132 found 6 hours ago
Alaska Airlines
Wed, Dec 10 - Sat, Dec 13
SAN
San Diego
STS
Santa Rosa
$138 Roundtrip, found 1 day ago
$138
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Dec 10 from San Diego to Santa Rosa, returning Sat, Dec 13, priced at $138 found 1 day ago
Alaska Airlines
Wed, Dec 10 - Sat, Dec 13
SAN
San Diego
STS
Santa Rosa
$140 Roundtrip, found 1 day ago
$140
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Dec 10 from San Diego to Santa Rosa, returning Sat, Dec 13, priced at $140 found 1 day ago
American Airlines
Fri, Jan 23 - Mon, Jan 26
SAN
San Diego
STS
Santa Rosa
$142 Roundtrip, found 6 hours ago
$142
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Fri, Jan 23 from San Diego to Santa Rosa, returning Mon, Jan 26, priced at $142 found 6 hours ago
American Airlines
Mon, Jan 26 - Wed, Jan 28
SAN
San Diego
STS
Santa Rosa
$143 Roundtrip, found 6 days ago
$143
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jan 26 from San Diego to Santa Rosa, returning Wed, Jan 28, priced at $143 found 6 days ago
American Airlines
Thu, Dec 4 - Sat, Dec 6
SAN
San Diego
STS
Santa Rosa
$144 Roundtrip, found 12 hours ago
$144
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Thu, Dec 4 from San Diego to Santa Rosa, returning Sat, Dec 6, priced at $144 found 12 hours ago
Hawaiian Airlines
Fri, Jan 23 - Sun, Jan 25
SAN
San Diego
STS
Santa Rosa
$147 Roundtrip, found 6 hours ago
$147
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Fri, Jan 23 from San Diego to Santa Rosa, returning Sun, Jan 25, priced at $147 found 6 hours ago
Alaska Airlines
Wed, Dec 3 - Wed, Dec 10
SAN
San Diego
STS
Santa Rosa
$152 Roundtrip, found 7 hours ago
$152
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Wed, Dec 3 from San Diego to Santa Rosa, returning Wed, Dec 10, priced at $152 found 7 hours ago
Southwest Airlines
Sat, Jul 18 - Tue, Jul 21
SAN
San Diego
STS
Santa Rosa
$217 Roundtrip, just found
$217
Roundtrip
just found
Select Southwest Airlines flight, departing Sat, Jul 18 from San Diego to Santa Rosa, returning Tue, Jul 21, priced at $217 just found

Find the cheapest month to fly from San Diego (SAN) to Santa Rosa (STS)

January is typically the cheapest month to fly

From $116 - $271 per traveler.

Alternative airports near Santa Rosa

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sonoma County STS. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $337
STS
Sonoma County
CheapestClosest
Average driving time to city center10 min
Flights from $337
Flights from San Diego (SAN) to Santa Rosa (STS)
Origin airport
San Diego Intl.
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines, Southwest Airlines
Roundtrip price
$111
Distance
508 mi
Average flight time
1 hour 57 mins

San Diego to Santa Rosa Flights

The cheapest times to fly from San Diego to Santa Rosa

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Diego to Santa Rosa are during the month of December. You can find some of the cheapest flights from San Diego to Santa Rosa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Diego to Santa Rosa

Sunday is one of the best days to book for cheap flights from San Diego to Santa Rosa: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Diego to Santa Rosa

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Diego to Santa Rosa in 2025. You can also book with separate airlines for your outbound and return journeys, from $59 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Diego to Santa Rosa flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Diego to Santa Rosa airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS) cost?
Grab a cheap one-way flight from $59 or cheap return flight from $117 from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS)?
December is the least expensive month to fly from SAN to STS. Traveling during quieter months is often the key to landing a great deal.
Which airlines fly direct from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS)?
You can travel nonstop from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS) on an Alaska Airlines flight.
What is the cheapest airline that flies from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from SAN to STS. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS)?
On average, San Diego Intl. Airport (SAN) only has 1 direct flight to Sonoma County Airport (STS) daily. For more choices, try our easy-to-use filter tool. Just enter your dates, then click on "1 Stop" or "2+ Stops" to discover flights with layovers.
What are the most popular departure times for flights from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS)?
More passengers fly between SAN and STS at 8 AM than at any other time. Rather skip the crowds? Try choosing a quieter departure window and there's a chance you'll save on your fare as well.
What day of the week has the most flights from SAN to STS?
Sunday has the most flights from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS). Consider jetting off on this day and you'll have a greater chance of finding a departure that fits your schedule.
What is the earliest flight from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS)?
San Diego Intl. Airport (SAN)'s first flight to Sonoma County Airport (STS) leaves at approximately 8:16AM UTC-8. With a travel time of 1h 50m, you'll land at around 10:06AM UTC-8.
How long does it take to fly from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS)?
The average flight time from SAN to STS is 1 hour and 50 minutes, covering a distance of 510 mi.
What is the best time to fly from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS)?
Choose a flight from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Santa Rosa from San Diego Intl. Airport (SAN)?
Catch a direct flight from San Diego Intl. Airport (SAN) to Santa Rosa and land at any one of these airports:

  • San Francisco Intl. Airport (SFO)
  • Oakland Intl. Airport (OAK)
  • Sonoma County Airport (STS)

Is it cheaper to buy a plane ticket from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS) last-minute?
Booking your plane ticket from SAN to STS shortly before your getaway is usually more expensive. However, if you're flexible with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a SAN to STS flight and hotel package?
Compared with arranging flights and hotels separately, booking a SAN to STS flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place takes the hassle out of planning your trip. Just pick your flights and select from our wide range of stays, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to Sonoma County Airport (STS)?
In most cases, you're able to cancel or reschedule your SAN to STS flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like more information, go to our Customer Service portal.

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*Available to One Key members.