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$102 Cheap Flights from San Francisco (SFO) to Santa Rosa (STS)

View $102 flight on Tue, Sep 22, 2026Opens in a new window

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

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Cheap Flights from San Francisco to Santa Rosa (SFO-STS)

Prices were available within the past 7 days and start at $102 for one-way flights and $203 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Sep 9 - Wed, Sep 16
SFO
San Francisco
STS
Santa Rosa
$203 Roundtrip, found 19 hours ago
$203
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Wed, Sep 9 from San Francisco to Santa Rosa, returning Wed, Sep 16, priced at $203 found 19 hours ago
Southwest Airlines
Wed, Sep 9 - Wed, Sep 16
SFO
San Francisco
STS
Santa Rosa
$203 Roundtrip, found 19 hours ago
$203
Roundtrip
found 19 hours ago
Select Southwest Airlines flight, departing Wed, Sep 9 from San Francisco to Santa Rosa, returning Wed, Sep 16, priced at $203 found 19 hours ago
Alaska Airlines
Wed, Sep 9 - Wed, Sep 16
SFO
San Francisco
STS
Santa Rosa
$208 Roundtrip, found 19 hours ago
$208
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Wed, Sep 9 from San Francisco to Santa Rosa, returning Wed, Sep 16, priced at $208 found 19 hours ago
Alaska Airlines
Mon, Sep 21 - Sat, Oct 3
SFO
San Francisco
STS
Santa Rosa
$213 Roundtrip, found 13 hours ago
$213
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Mon, Sep 21 from San Francisco to Santa Rosa, returning Sat, Oct 3, priced at $213 found 13 hours ago
Alaska Airlines
Wed, Sep 9 - Wed, Sep 16
SFO
San Francisco
STS
Santa Rosa
$214 Roundtrip, found 19 hours ago
$214
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Wed, Sep 9 from San Francisco to Santa Rosa, returning Wed, Sep 16, priced at $214 found 19 hours ago
Southwest Airlines
Mon, Sep 21 - Sat, Oct 3
SFO
San Francisco
STS
Santa Rosa
$218 Roundtrip, found 13 hours ago
$218
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Mon, Sep 21 from San Francisco to Santa Rosa, returning Sat, Oct 3, priced at $218 found 13 hours ago
Southwest Airlines
Thu, Oct 29 - Mon, Nov 2
SFO
San Francisco
STS
Santa Rosa
$223 Roundtrip, found 19 hours ago
$223
Roundtrip
found 19 hours ago
Select Southwest Airlines flight, departing Thu, Oct 29 from San Francisco to Santa Rosa, returning Mon, Nov 2, priced at $223 found 19 hours ago
Southwest Airlines
Thu, Oct 29 - Mon, Nov 2
SFO
San Francisco
STS
Santa Rosa
$228 Roundtrip, found 19 hours ago
$228
Roundtrip
found 19 hours ago
Select Southwest Airlines flight, departing Thu, Oct 29 from San Francisco to Santa Rosa, returning Mon, Nov 2, priced at $228 found 19 hours ago
American Airlines
Thu, Oct 29 - Mon, Nov 2
SFO
San Francisco
STS
Santa Rosa
$413 Roundtrip, found 19 hours ago
$413
Roundtrip
found 19 hours ago
Select American Airlines flight, departing Thu, Oct 29 from San Francisco to Santa Rosa, returning Mon, Nov 2, priced at $413 found 19 hours ago
Delta
Mon, Dec 21 - Fri, Dec 25
SFO
San Francisco
STS
Santa Rosa
$512 Roundtrip, found 1 day ago
$512
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Dec 21 from San Francisco to Santa Rosa, returning Fri, Dec 25, priced at $512 found 1 day ago

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 $541
STS
Sonoma County
CheapestClosest
Average driving time to city center10 min
Flights from $541

Find the cheapest month to fly from San Francisco (SFO) to Santa Rosa (STS)

October is typically the cheapest month to fly

From $212 - $392 per traveler.

Frequently asked questions

How much does a flight from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County) cost?
You can find cheap one-way flights from $102 and cheap return flights from $203 SFO to STS with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when SFO to STS ticket fares go up or down.
What is the cheapest month to fly from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The cheapest month to fly from SFO to STS is September when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Enter SFO to STS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Alaska Airlines, American Airlines and United are just some of the carriers that fly from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County). Use Expedia's flight search tool to compare airlines on this route and find our cheapest option for your trip. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County)?
To find a cheap flight from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The earliest flight from San Francisco (SFO) to Santa Rosa (STS) usually departs at around 5:35 AM, operated by Delta and Alaska Airlines. This seasonal service is active in August, making it a convenient option for an early start to your day in Santa Rosa. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County)?
A flight from SFO to STS with a layover takes around 6 hours 30 minutes, with the route covering approximately 66 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County)?
First class seats are offered on the SFO to STS route with American Airlines.
How do I earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County) flight with Expedia?
It's easy to earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Santa Rosa from San Francisco Intl. (SFO)?
From San Francisco Intl. (SFO), you can fly into Sonoma County (STS) to reach Santa Rosa. Some flights may connect through major hubs like Robert's Field (RDM), Los Angeles Intl. (LAX), Salt Lake City Intl. (SLC) before reaching Santa Rosa. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County) at the last minute?
Typically, booking a last minute flight from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County) flight and hotel package?
Securing a San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County)?
If you booked your San Francisco, CA (SFO-San Francisco Intl.) to Santa Rosa, CA (STS-Sonoma County) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines
Roundtrip price
$202
Distance
65 mi

Book with confidence

San Francisco to Santa Rosa Flights

The cheapest times to fly from San Francisco 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 Francisco to Santa Rosa are during the month of September. You can find some of the cheapest flights from San Francisco to Santa Rosa with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from San Francisco 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 Francisco 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 Francisco to Santa Rosa in 2026. You can also book with separate airlines for your outbound and return journeys, from $102 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 Francisco 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 Francisco 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.

 

San Francisco to Santa Rosa Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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