$129 Cheap Flights from Pasco (PSC) to Santa Rosa (STS)

View $129 flight on Tue, Sep 2, 2025Opens in a new window

Popular airlines from Tri-Cities Airport (PSC) to Santa Rosa, CA (STS-Sonoma County)

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Cheap Flights from Pasco to Santa Rosa (PSC-STS)

Prices were available within the past 7 days and start at $129 for one-way flights and $243 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Aug 30 - Wed, Sep 3
PSC
Pasco
STS
Santa Rosa
$243 Roundtrip, found 8 hours ago
$243
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Pasco to Santa Rosa, returning Wed, Sep 3, priced at $243 found 8 hours ago
Hawaiian Airlines
Wed, Oct 22 - Wed, Oct 29
PSC
Pasco
STS
Santa Rosa
$250 Roundtrip, found 2 days ago
$250
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Wed, Oct 22 from Pasco to Santa Rosa, returning Wed, Oct 29, priced at $250 found 2 days ago
Alaska Airlines
Sat, Aug 30 - Wed, Sep 3
PSC
Pasco
STS
Santa Rosa
$252 Roundtrip, found 8 hours ago
$252
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Pasco to Santa Rosa, returning Wed, Sep 3, priced at $252 found 8 hours ago
Alaska Airlines
Sat, Aug 30 - Wed, Sep 3
PSC
Pasco
STS
Santa Rosa
$258 Roundtrip, found 4 hours ago
$258
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Pasco to Santa Rosa, returning Wed, Sep 3, priced at $258 found 4 hours ago
Hawaiian Airlines
Sat, Nov 15 - Tue, Dec 2
PSC
Pasco
STS
Santa Rosa
$260 Roundtrip, found 4 days ago
$260
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Sat, Nov 15 from Pasco to Santa Rosa, returning Tue, Dec 2, priced at $260 found 4 days ago
Alaska Airlines
Sat, Aug 30 - Wed, Sep 3
PSC
Pasco
STS
Santa Rosa
$262 Roundtrip, found 8 hours ago
$262
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Pasco to Santa Rosa, returning Wed, Sep 3, priced at $262 found 8 hours ago
Hawaiian Airlines
Sat, Dec 13 - Tue, Dec 16
PSC
Pasco
STS
Santa Rosa
$270 Roundtrip, found 18 hours ago
$270
Roundtrip
found 18 hours ago
Select Hawaiian Airlines flight, departing Sat, Dec 13 from Pasco to Santa Rosa, returning Tue, Dec 16, priced at $270 found 18 hours ago
Alaska Airlines
Sat, Aug 30 - Wed, Sep 3
PSC
Pasco
STS
Santa Rosa
$272 Roundtrip, found 4 hours ago
$272
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Pasco to Santa Rosa, returning Wed, Sep 3, priced at $272 found 4 hours ago
Hawaiian Airlines
Sat, Dec 13 - Wed, Dec 17
PSC
Pasco
STS
Santa Rosa
$280 Roundtrip, found 18 hours ago
$280
Roundtrip
found 18 hours ago
Select Hawaiian Airlines flight, departing Sat, Dec 13 from Pasco to Santa Rosa, returning Wed, Dec 17, priced at $280 found 18 hours ago
American Airlines
Wed, Dec 10 - Sat, Dec 13
PSC
Pasco
STS
Santa Rosa
$409 Roundtrip, found 18 hours ago
$409
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Wed, Dec 10 from Pasco to Santa Rosa, returning Sat, Dec 13, priced at $409 found 18 hours ago

Find the cheapest month to fly from Pasco (PSC) to Santa Rosa (STS)

August is typically the cheapest month to fly

From $258 - $651 per traveler.

Graph displaying average flight prices per month

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 $408
STS
Sonoma County
CheapestClosest
Average driving time to city center10 min
Flights from $408
Flights from Pasco (PSC) to Santa Rosa (STS)
Origin airport
Tri-Cities
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$242
Distance
567 mi

Pasco to Santa Rosa Flights

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

 

The best time to book a flight from Pasco to Santa Rosa

Sunday is one of the best days to book for cheap flights from Pasco 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 Pasco 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 Pasco to Santa Rosa in 2025. You can also book with separate airlines for your outbound and return journeys, from $129 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 Pasco 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 Pasco 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.

 

Frequently asked questions

How much does a flight from Tri-Cities Airport (PSC) to Sonoma County Airport (STS) cost?
Discover the latest flight deals from PSC to STS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from PSC to STS?
The cheapest flights from PSC to STS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from PSC to STS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PSC to STS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Tri-Cities Airport (PSC) to Sonoma County Airport (STS)?
Direct flights from Tri-Cities Airport (PSC) to Sonoma County Airport (STS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PSC to STS?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tri-Cities Airport (PSC) to Sonoma County Airport (STS)?
To reach Sonoma County Airport (STS) without delays, book a flight that leaves Tri-Cities Airport (PSC) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Santa Rosa from Tri-Cities Airport (PSC)?
Check out your flight options from Tri-Cities Airport (PSC) to San Francisco Intl. Airport (SFO). This is the only Santa Rosa airport you can fly into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Tri-Cities Airport (PSC) to Sonoma County Airport (STS) last-minute?
Booking your plane ticket from PSC to STS shortly before your getaway is generally more expensive. But if you're flexible with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a PSC to STS flight and hotel package?
Compared with arranging flights and hotels separately, booking a PSC to STS flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place will take the hassle out of travel planning. Simply secure your flights and select from our extensive range of hotels, then customize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Tri-Cities Airport (PSC) to Sonoma County Airport (STS)?
Typically, it's possible to cancel or reschedule your PSC to STS flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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Pasco nearby Airports

Walla Walla

Walla Walla Regional to Santa Rosa
$242.01
*Available to One Key members.