$129 Cheap Flights from Eugene (EUG) to Santa Rosa (STS)

View $129 flight on Sat, Oct 11, 2025Opens in a new window

Popular airlines from Mahlon Sweet Field Airport (EUG) to Santa Rosa, CA (STS-Sonoma County)

Cheap Flights from Eugene to Santa Rosa (EUG-STS)

Prices were available within the past 7 days and start at $129 for one-way flights and $260 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Wed, Sep 17 - Wed, Sep 24
EUG
Eugene
STS
Santa Rosa
$260 Roundtrip, found 1 day ago
$260
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Sep 17 from Eugene to Santa Rosa, returning Wed, Sep 24, priced at $260 found 1 day ago
Hawaiian Airlines
Tue, Sep 23 - Mon, Sep 29
EUG
Eugene
STS
Santa Rosa
$270 Roundtrip, found 1 day ago
$270
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, Sep 23 from Eugene to Santa Rosa, returning Mon, Sep 29, priced at $270 found 1 day ago
Alaska Airlines
Sat, Oct 4 - Sat, Oct 11
EUG
Eugene
STS
Santa Rosa
$272 Roundtrip, found 12 hours ago
$272
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Sat, Oct 4 from Eugene to Santa Rosa, returning Sat, Oct 11, priced at $272 found 12 hours ago
Hawaiian Airlines
Thu, Sep 18 - Sat, Sep 20
EUG
Eugene
STS
Santa Rosa
$276 Roundtrip, found 1 day ago
$276
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Thu, Sep 18 from Eugene to Santa Rosa, returning Sat, Sep 20, priced at $276 found 1 day ago
Hawaiian Airlines
Wed, Oct 1 - Thu, Oct 2
EUG
Eugene
STS
Santa Rosa
$276 Roundtrip, found 3 days ago
$276
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Wed, Oct 1 from Eugene to Santa Rosa, returning Thu, Oct 2, priced at $276 found 3 days ago
Hawaiian Airlines
Thu, Sep 18 - Wed, Sep 24
EUG
Eugene
STS
Santa Rosa
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Thu, Sep 18 from Eugene to Santa Rosa, returning Wed, Sep 24, priced at $278 found 1 day ago
Alaska Airlines
Sat, Oct 11 - Mon, Oct 13
EUG
Eugene
STS
Santa Rosa
$281 Roundtrip, found 6 hours ago
$281
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Sat, Oct 11 from Eugene to Santa Rosa, returning Mon, Oct 13, priced at $281 found 6 hours ago
Alaska Airlines
Sat, Oct 4 - Sat, Oct 11
EUG
Eugene
STS
Santa Rosa
$282 Roundtrip, found 12 hours ago
$282
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Sat, Oct 4 from Eugene to Santa Rosa, returning Sat, Oct 11, priced at $282 found 12 hours ago
Hawaiian Airlines
Thu, Sep 18 - Mon, Sep 29
EUG
Eugene
STS
Santa Rosa
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Thu, Sep 18 from Eugene to Santa Rosa, returning Mon, Sep 29, priced at $288 found 1 day ago
American Airlines
Sat, Oct 11 - Mon, Oct 13
EUG
Eugene
STS
Santa Rosa
$574 Roundtrip, found 6 hours ago
$574
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Sat, Oct 11 from Eugene to Santa Rosa, returning Mon, Oct 13, priced at $574 found 6 hours ago

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 $380
STS
Sonoma County
CheapestClosest
Average driving time to city center10 min
Flights from $380
Flights from Eugene (EUG) to Santa Rosa (STS)
Origin airport
Eugene
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$252
Distance
388 mi

Eugene to Santa Rosa Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Eugene 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 Eugene 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 Eugene 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 Eugene 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 Eugene 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 Mahlon Sweet Field Airport (EUG) to Sonoma County Airport (STS) cost?
Snag a cheap one-way flight from $129 or cheap return flight from $260 from Mahlon Sweet Field Airport (EUG) to Sonoma County Airport (STS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Mahlon Sweet Field Airport (EUG) to Sonoma County Airport (STS)?
September is the most affordable month to fly from EUG to STS. Planning your trip for the off-season is often the key to finding a great deal.
What is the cheapest airline that flies from Mahlon Sweet Field Airport (EUG) to Sonoma County Airport (STS)?
To find the cheapest airline that'll fly you from EUG to STS, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Mahlon Sweet Field Airport (EUG) to Sonoma County Airport (STS)?
Direct flights from Mahlon Sweet Field Airport (EUG) to Sonoma County Airport (STS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from EUG to STS?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the season, carrier 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 Mahlon Sweet Field Airport (EUG) to Sonoma County Airport (STS)?
To land at Sonoma County Airport (STS) on time, select a flight that leaves from Mahlon Sweet Field Airport (EUG) before 3 PM. The likelihood 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 Mahlon Sweet Field Airport (EUG)?
Take a direct flight from Mahlon Sweet Field Airport (EUG) to Santa Rosa and land at San Francisco Intl. Airport (SFO). An alternative arrival point to this destination is Oakland Intl. Airport (OAK).
Is it cheaper to buy a plane ticket from Mahlon Sweet Field Airport (EUG) to Sonoma County Airport (STS) last-minute?
Booking your flight from EUG to STS right before your journey is typically more expensive. However, if you're flexible with your schedule, you could land a cheap last-minute fare.
Is it cheaper to book an EUG to STS flight and hotel package?
You can save money by securing an EUG to STS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've chosen your preferred accommodations and flights, you can add extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Mahlon Sweet Field Airport (EUG) to Sonoma County Airport (STS)?
If you reserved your EUG to STS flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

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*Available to One Key members.