Cheap Flights from Sonoma County Airport

View S$76 flight on Wed, 15 Apr, 2026Opens in a new window

Popular airlines from Santa Rosa, CA (STS-Sonoma County)

  • Alaska Airlines

  • American Airlines

  • Southwest Airlines

  • Hawaiian Airlines

  • Qatar Airways

  • Iberia

  • Finnair

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

The Annual Holiday Sale

Members save up to 40% on hotels. Plan this year’s big trip and save.
Book now

Flights from Sonoma County Airport

Prices were available within the past 7 days and start at S$76 for one-way flights and S$151 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 15 Apr - Sat, 18 Apr
STS
Santa Rosa
SAN
San Diego
S$151 Return, found 6 days ago
S$151
Return
found 6 days ago
Select American Airlines flight, departing Wed, 15 Apr from Santa Rosa to San Diego, returning Sat, 18 Apr, priced at S$151 found 6 days ago
American Airlines
Thu, 26 Mar - Mon, 30 Mar
STS
Santa Rosa
LAX
Los Angeles
S$213 Return, found 5 days ago
S$213
Return
found 5 days ago
Select American Airlines flight, departing Thu, 26 Mar from Santa Rosa to Los Angeles, returning Mon, 30 Mar, priced at S$213 found 5 days ago
American Airlines
Wed, 15 Apr - Sat, 18 Apr
STS
Santa Rosa
SAN
San Diego
S$214 Return, found 6 days ago
S$214
Return
found 6 days ago
Select American Airlines flight, departing Wed, 15 Apr from Santa Rosa to San Diego, returning Sat, 18 Apr, priced at S$214 found 6 days ago
American Airlines
Wed, 15 Apr - Sat, 18 Apr
STS
Santa Rosa
SAN
San Diego
S$256 Return, found 6 days ago
S$256
Return
found 6 days ago
Select American Airlines flight, departing Wed, 15 Apr from Santa Rosa to San Diego, returning Sat, 18 Apr, priced at S$256 found 6 days ago
Alaska Airlines
Thu, 26 Mar - Mon, 30 Mar
STS
Santa Rosa
LAX
Los Angeles
S$263 Return, found 5 days ago
S$263
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 26 Mar from Santa Rosa to Los Angeles, returning Mon, 30 Mar, priced at S$263 found 5 days ago
American Airlines
Wed, 15 Apr - Sat, 18 Apr
STS
Santa Rosa
SAN
San Diego
S$271 Return, found 6 days ago
S$271
Return
found 6 days ago
Select American Airlines flight, departing Wed, 15 Apr from Santa Rosa to San Diego, returning Sat, 18 Apr, priced at S$271 found 6 days ago
American Airlines
Wed, 15 Apr - Sat, 18 Apr
STS
Santa Rosa
SAN
San Diego
S$289 Return, found 6 days ago
S$289
Return
found 6 days ago
Select American Airlines flight, departing Wed, 15 Apr from Santa Rosa to San Diego, returning Sat, 18 Apr, priced at S$289 found 6 days ago
American Airlines
Sat, 5 Dec - Wed, 9 Dec
STS
Santa Rosa
LAX
Los Angeles
S$301 Return, found 4 days ago
S$301
Return
found 4 days ago
Select American Airlines flight, departing Sat, 5 Dec from Santa Rosa to Los Angeles, returning Wed, 9 Dec, priced at S$301 found 4 days ago
American Airlines
Thu, 26 Mar - Mon, 30 Mar
STS
Santa Rosa
LAX
Los Angeles
S$307 Return, found 5 days ago
S$307
Return
found 5 days ago
Select American Airlines flight, departing Thu, 26 Mar from Santa Rosa to Los Angeles, returning Mon, 30 Mar, priced at S$307 found 5 days ago
American Airlines
Wed, 15 Apr - Sat, 18 Apr
STS
Santa Rosa
SAN
San Diego
S$318 Return, found 6 days ago
S$318
Return
found 6 days ago
Select American Airlines flight, departing Wed, 15 Apr from Santa Rosa to San Diego, returning Sat, 18 Apr, priced at S$318 found 6 days ago

Frequently asked questions

What is the airport code for Sonoma County Airport (STS)?
Sonoma County Airport (STS) uses the airport code: STS.
How far is Sonoma County Airport (STS) from central Santa Rosa?
Step off the tarmac at Sonoma County Airport (STS) and then grab some keys from one of two Santa Rosa car rental offices on-site, Hertz or Sixt. With your own ride, getting to the heart of Santa Rosa will be a breeze. All you have to do is set your GPS and travel 11 kilometres to the southeast.
Does Sonoma County Airport have a hotel?
STS has no accommodation in the immediate area, but that doesn't mean all is lost. You should find someplace comfortable to stay before you jet off if you broaden your search. The Amazing Resort-like Estate Near Healdsburg, CA and the Experience an unforgettable holiday at this 3BR/3BA resort are fantastic choices just outside the airport. Book a room at either the evening before your flight and your departure gate will be a quick drive away. The Amazing Resort-like Estate Near Healdsburg, CA offers guests mountain views, a swimming pool and a barbecue grill. The Experience an unforgettable holiday at this 3BR/3BA resort also has convenient amenities like a barbecue grill, WiFi and an electric car charging station.
Are there private lounges in Sonoma County Airport (STS)?
Check Santa Rosa, CA (STS-Sonoma County)'s official website to find out what kind of amenities are available, including lounges. If you're looking for things to do before boarding your flight, hit the airport shops, grab a quick bite or drink, or just enjoy watching the planes take off and land.
What airlines fly out of Sonoma County Airport (STS)?
Secure a flight out of Sonoma County Airport (STS) with any of these quality domestic airlines and relax knowing your journey will be a smooth one:

  • Alaska Airlines
  • Avelo Airlines
  • American Airlines

How many flights per day fly out of STS?
On average, there are 15 flights out of Sonoma County Airport (STS) a day. Choose your destination and find the best deal with Expedia.
How to find cheap flights from STS with Expedia?
The cheapest flight from Santa Rosa, CA (STS-Sonoma County) was to San Diego (SAN) at S$76. With Expedia, you can compare flights from all available airlines after you've entered your travel dates and destination. You can sort your results by price and also use the filters to the left. These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply. One of the easiest ways to snag a cheap flight is to be flexible with when you travel. Start by searching for flights on the dates you'd like, then click on "Flexible dates" at the top of the page. This will reveal the cheapest prices for the days surrounding your trip. You can also filter your search results by specific airlines, departure and arrival times, included baggage and more.
Where can you fly to from Sonoma County Airport?
There's a range of exciting destinations available. Browse some of the Santa Rosa, CA (STS-Sonoma County) international flight deals further up the page for inspiration for your next getaway. Most domestic travellers head to Los Angeles, San Diego or Phoenix. Compare the prices between airlines, find incredible deals and secure the holiday of a lifetime for less.
What is the cancellation policy on flights and how do I cancel my flight on Expedia?
Most flights are free to cancel within 24 hours of making the reservation. However, some flights are non-refundable, and you may receive a flight credit from the airline to use for a future booking. For more information, please visit our Customer Service Portal.

Travel information

Sonoma County Airport Information

Airport Name
Airport Location
Airport Code
Latitude
Longitude
Altitude
DundeeSt. Andrews, GBIATA: DND, ICAO: EGPN, GPS: EGPN56.452499-3.0258305.18meters

Dundee Airport (DND), offers flights from major airline carriers to a number of well-traveled global destinations. You will find useful information above about St. Andrews airport to assist you when planning your next trip. Booking flights from DND is easy with Expedia, the world’s largest online travel source.

Explore a world of travel with Expedia

*Available to Expedia members.