Cheap Flights from Seattle (SEA) to Santa Rosa (STS)

View AU$253 flight on Thu, 2 July 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Santa Rosa, CA (STS-Sonoma County)

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Cheap Flights from Seattle (SEA) to Santa Rosa (STS)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 17 June - Mon, 29 June
SEA
Seattle
STS
Santa Rosa
AU$422 Return, found 3 days ago
AU$422
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 17 June from Seattle to Santa Rosa, returning Mon, 29 June, priced at AU$422 found 3 days ago
Alaska Airlines
Wed, 17 June - Sat, 27 June
SEA
Seattle
STS
Santa Rosa
AU$451 Return, found 3 days ago
AU$451
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 17 June from Seattle to Santa Rosa, returning Sat, 27 June, priced at AU$451 found 3 days ago
Alaska Airlines
Fri, 19 June - Sat, 27 June
SEA
Seattle
STS
Santa Rosa
AU$479 Return, found 3 days ago
AU$479
Return
found 3 days ago
Select Alaska Airlines flight, departing Fri, 19 June from Seattle to Santa Rosa, returning Sat, 27 June, priced at AU$479 found 3 days ago
Alaska Airlines
Wed, 17 June - Wed, 24 June
SEA
Seattle
STS
Santa Rosa
AU$493 Return, found 3 days ago
AU$493
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 17 June from Seattle to Santa Rosa, returning Wed, 24 June, priced at AU$493 found 3 days ago
Alaska Airlines
Sat, 20 June - Wed, 24 June
SEA
Seattle
STS
Santa Rosa
AU$507 Return, found 3 days ago
AU$507
Return
found 3 days ago
Select Alaska Airlines flight, departing Sat, 20 June from Seattle to Santa Rosa, returning Wed, 24 June, priced at AU$507 found 3 days ago
Alaska Airlines
Fri, 19 June - Wed, 24 June
SEA
Seattle
STS
Santa Rosa
AU$521 Return, found 3 days ago
AU$521
Return
found 3 days ago
Select Alaska Airlines flight, departing Fri, 19 June from Seattle to Santa Rosa, returning Wed, 24 June, priced at AU$521 found 3 days ago
Alaska Airlines
Sat, 20 June - Sun, 28 June
SEA
Seattle
STS
Santa Rosa
AU$535 Return, found 3 days ago
AU$535
Return
found 3 days ago
Select Alaska Airlines flight, departing Sat, 20 June from Seattle to Santa Rosa, returning Sun, 28 June, priced at AU$535 found 3 days ago
Alaska Airlines
Sun, 21 June - Mon, 29 June
SEA
Seattle
STS
Santa Rosa
AU$550 Return, found 3 days ago
AU$550
Return
found 3 days ago
Select Alaska Airlines flight, departing Sun, 21 June from Seattle to Santa Rosa, returning Mon, 29 June, priced at AU$550 found 3 days ago
Alaska Airlines
Thu, 18 June - Sun, 28 June
SEA
Seattle
STS
Santa Rosa
AU$564 Return, found 3 days ago
AU$564
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 18 June from Seattle to Santa Rosa, returning Sun, 28 June, priced at AU$564 found 3 days ago
Alaska Airlines
Sun, 21 June - Sat, 27 June
SEA
Seattle
STS
Santa Rosa
AU$578 Return, found 3 days ago
AU$578
Return
found 3 days ago
Select Alaska Airlines flight, departing Sun, 21 June from Seattle to Santa Rosa, returning Sat, 27 June, priced at AU$578 found 3 days ago

Frequently asked questions

How much is a flight from Seattle - Tacoma Intl. Airport (SEA) to Sonoma County Airport?
If you're travelling from SEA to Sonoma County Airport (STS), round-trip journeys start from AU$422. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't hang around. Book today and save yourself both money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to Sonoma County Airport (STS)?
Most flights can be cancelled online, but whether or not you incur a fee depends on your airline. If you do have to cancel your trip, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) 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 Sea-Tac Airport to STS flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SEA to Sonoma County Airport?
That movie you've been desperate to see will just have to wait — the flight distance between SEA (SEA) and Sonoma County Airport (STS) (STS) is only 1 000 kilometres. The captain will be asking you to buckle up for touchdown before you know it.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to STS?
Alaska Airlines (AS) will take you from Seattle - Tacoma Intl. Airport (SEA) to Sonoma County Airport (STS) safely and reliably. You can choose from 43 direct flights every month along this route.
Are Seattle - Tacoma Intl. Airport (SEA) to Sonoma County Airport (STS) flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Seattle - Tacoma Intl. Airport (SEA) to Sonoma County Airport are available up to a year prior to departure on Expedia. And although you may pick up a fantastic last-minute deal, it's not something you should bank on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid getting stuck in the dreaded middle seat! We regularly update our fares to make sure you get the biggest bargains, so check back often for all the latest specials.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Sonoma County
Return price
AU$421
Distance
988 km
Average flight time
2 hours 6 mins

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