Cheap Flights from Sonoma County Airport

View ฿13,875 flight on Tue, 17 Mar 2026Opens in a new window

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

  • Alaska Airlines

  • American Airlines

  • Southwest Airlines

  • Qatar Airways

  • Finnair

  • Hawaiian Airlines

  • Japan Airlines

  • 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

Flights from Sonoma County Airport

Prices were available within the past 7 days and start at ฿13,875 for one-way flights and ฿44,015 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, 13 Mar - Sat, 14 Mar
STS
Santa Rosa
PDX
Portland
฿44,015 Return, found 4 days ago
฿44,015
Return
found 4 days ago
Select American Airlines flight, departing Fri, 13 Mar from Santa Rosa to Portland, returning Sat, 14 Mar, priced at ฿44,015 found 4 days ago
American Airlines
Fri, 13 Mar - Sat, 14 Mar
STS
Santa Rosa
PDX
Portland
฿45,110 Return, found 3 days ago
฿45,110
Return
found 3 days ago
Select American Airlines flight, departing Fri, 13 Mar from Santa Rosa to Portland, returning Sat, 14 Mar, priced at ฿45,110 found 3 days ago
American Airlines
Fri, 13 Mar - Sat, 14 Mar
STS
Santa Rosa
PDX
Portland
฿49,350 Return, found 4 days ago
฿49,350
Return
found 4 days ago
Select American Airlines flight, departing Fri, 13 Mar from Santa Rosa to Portland, returning Sat, 14 Mar, priced at ฿49,350 found 4 days ago
American Airlines
Fri, 13 Mar - Sat, 14 Mar
STS
Santa Rosa
PDX
Portland
฿50,285 Return, found 3 days ago
฿50,285
Return
found 3 days ago
Select American Airlines flight, departing Fri, 13 Mar from Santa Rosa to Portland, returning Sat, 14 Mar, priced at ฿50,285 found 3 days ago
American Airlines
Fri, 13 Mar - Sat, 14 Mar
STS
Santa Rosa
PDX
Portland
฿51,405 Return, found 4 days ago
฿51,405
Return
found 4 days ago
Select American Airlines flight, departing Fri, 13 Mar from Santa Rosa to Portland, returning Sat, 14 Mar, priced at ฿51,405 found 4 days ago
American Airlines
Fri, 13 Mar - Sat, 14 Mar
STS
Santa Rosa
PDX
Portland
฿52,380 Return, found 3 days ago
฿52,380
Return
found 3 days ago
Select American Airlines flight, departing Fri, 13 Mar from Santa Rosa to Portland, returning Sat, 14 Mar, priced at ฿52,380 found 3 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 Seattle (SEA) at ฿13,875. 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
Washington Dulles Intl.Washington, DC, USIATA: IAD, ICAO: KIAD, GPS Code: KIAD38.944500-77.45580395.10 meters

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

*Available to Expedia members.