Title: £123 Cheap Flights from San Francisco to Santa Rosa (SFO to STS) - Expedia.co.uk ![](https://images.trvl-media.com/place/3288/93d7ff98-0178-43a1-b262-1a96bbba25d1.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3288/93d7ff98-0178-43a1-b262-1a96bbba25d1.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £123 Cheap Flights from San Francisco (SFO) to Santa Rosa (STS) [View £123 flight on Sat, 4 Jul 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:SFO,to:STS,departure:04/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:122.10&airProductToken=AQpiCi4IwaYBEgMxNzYYsnEgi7gBKO6-kQMwzb-RAzhYQABYAWoCU1ZyCE9INU9YVkJOCjAIwaYBEgQzNDc2GIu4ASDylAEossCRAzCVwZEDOFhAAVgBagJTVnIIUUgyT0FTQk4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from San Francisco International Airport (SFO) to Santa Rosa, CA (STS-Sonoma County) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:sfo,to:sts,departure:16/11/2025TANYT&leg2=from:sts,to:sfo,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![Hawaiian Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_HA.svg) Hawaiian Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:sfo,to:sts,departure:16/11/2025TANYT&leg2=from:sts,to:sfo,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"HA"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:sfo,to:sts,departure:16/11/2025TANYT&leg2=from:sts,to:sfo,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Cheap Flights from San Francisco (SFO) to Santa Rosa (STS) Prices were available within the past 7 days and start at £123 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ## Find the cheapest month to fly from San Francisco (SFO) to Santa Rosa (STS) ### January is typically the cheapest month to fly From £120 - £344 per traveller. Flight from San Francisco to Santa Rosa route information | Origin airport | San Francisco Intl. | | --- | --- | | Destination airport | Sonoma County | | Distance | 105 km | ## Compare flights from San Francisco to Santa Rosa easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from San Francisco to Santa Rosa. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Sonoma County in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from San Francisco Intl. to Sonoma County.   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from San Francisco Intl. (SFO) to Sonoma County (STS) The easiest way to view the best deals on flights from San Francisco to Santa Rosa today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from San Francisco Intl. to Sonoma County start at just and range up to .   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near San Francisco and Santa Rosa - booking your flight during , the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your San Francisco to Santa Rosa flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from San Francisco Intl. to Sonoma County for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.   ## Frequently asked questions ### How much is a flight from SFO to STS? > Within the past 7 days on Expedia, for flights departing within the next year, the lowest price quoted for a round-trip journey from San Francisco Intl. Airport (SFO) to Sonoma County Airport was . Fares this cheap don't last forever, so book yours today. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from San Francisco Intl. Airport (SFO) to STS? > Most flights can be conveniently cancelled online, but whether you are charged a fee all comes down to your airline. If you do have to cancel your escape, follow the instructions in the [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from San Francisco Airport to Sonoma County Airport that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for San Francisco Airport to Sonoma County Airport (STS) flights, you'll see a "no change fees" filter for you to select. ### How many hours is the flight from SFO to STS? > Lasting around 4 hours and 8 minutes, the flight between San Francisco Intl. Airport (SFO) and Sonoma County Airport is a good opportunity to do some last-minute planning. How about using the time to read up on what to do in Windsor? ### How far is the flight from SFO to Sonoma County Airport (STS)? > A flight distance of just 110 kilometres separates San Francisco and Windsor. Once you're up in the air, you won't get a chance to do much more than listen to some short podcasts. ### Which airlines fly direct from San Francisco Intl. Airport (SFO) to Sonoma County Airport (STS)? > There are no direct flights, so you'll need to make at least one stop between SFO and Sonoma County Airport. Use the layover time to stretch your legs and take a break. ### Are SFO to STS flight tickets cheaper when they're purchased at the last minute? > Late planners can occasionally find a bargain, with some super cheap fares from SFO to Sonoma County Airport cropping up a few weeks before the departure date. If you'd rather book ahead of time, Expedia compares and updates the best flight deals continuously — as early as 12 months in advance in some cases. 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