$99 Cheap Flights from Santa Rosa (STS) to Eugene (EUG)

View $99 flight on Tue, Feb 24, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $99 for one-way flights and $197 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Apr 14 - Sat, Apr 25
STS
Santa Rosa
EUG
Eugene
$197 Roundtrip, found 12 hours ago
$197
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Tue, Apr 14 from Santa Rosa to Eugene, returning Sat, Apr 25, priced at $197 found 12 hours ago
Hawaiian Airlines
Tue, Apr 14 - Sat, Apr 18
STS
Santa Rosa
EUG
Eugene
$197 Roundtrip, found 10 hours ago
$197
Roundtrip
found 10 hours ago
Select Hawaiian Airlines flight, departing Tue, Apr 14 from Santa Rosa to Eugene, returning Sat, Apr 18, priced at $197 found 10 hours ago
Hawaiian Airlines
Sat, Mar 7 - Tue, Mar 10
STS
Santa Rosa
EUG
Eugene
$210 Roundtrip, found 12 hours ago
$210
Roundtrip
found 12 hours ago
Select Hawaiian Airlines flight, departing Sat, Mar 7 from Santa Rosa to Eugene, returning Tue, Mar 10, priced at $210 found 12 hours ago
Hawaiian Airlines
Tue, Apr 14 - Wed, Apr 15
STS
Santa Rosa
EUG
Eugene
$214 Roundtrip, found 12 hours ago
$214
Roundtrip
found 12 hours ago
Select Hawaiian Airlines flight, departing Tue, Apr 14 from Santa Rosa to Eugene, returning Wed, Apr 15, priced at $214 found 12 hours ago
Alaska Airlines
Tue, May 5 - Tue, May 19
STS
Santa Rosa
EUG
Eugene
$215 Roundtrip, found 1 day ago
$215
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, May 5 from Santa Rosa to Eugene, returning Tue, May 19, priced at $215 found 1 day ago
Hawaiian Airlines
Thu, Apr 16 - Sat, Apr 18
STS
Santa Rosa
EUG
Eugene
$220 Roundtrip, found 10 hours ago
$220
Roundtrip
found 10 hours ago
Select Hawaiian Airlines flight, departing Thu, Apr 16 from Santa Rosa to Eugene, returning Sat, Apr 18, priced at $220 found 10 hours ago
Alaska Airlines
Sat, Apr 25 - Sat, May 9
STS
Santa Rosa
EUG
Eugene
$223 Roundtrip, found 1 day ago
$223
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Apr 25 from Santa Rosa to Eugene, returning Sat, May 9, priced at $223 found 1 day ago
Alaska Airlines
Tue, Apr 14 - Wed, Apr 22
STS
Santa Rosa
EUG
Eugene
$225 Roundtrip, found 10 hours ago
$225
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Tue, Apr 14 from Santa Rosa to Eugene, returning Wed, Apr 22, priced at $225 found 10 hours ago
Southwest Airlines
Thu, Apr 16 - Mon, Apr 20
STS
Santa Rosa
EUG
Eugene
$306 Roundtrip, found 10 hours ago
$306
Roundtrip
found 10 hours ago
Select Southwest Airlines flight, departing Thu, Apr 16 from Santa Rosa to Eugene, returning Mon, Apr 20, priced at $306 found 10 hours ago
American Airlines
Fri, Mar 6 - Sun, Mar 8
STS
Santa Rosa
EUG
Eugene
$725 Roundtrip, found 8 hours ago
$725
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Fri, Mar 6 from Santa Rosa to Eugene, returning Sun, Mar 8, priced at $725 found 8 hours ago

Alternative airports near Eugene

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Mahlon Sweet Field EUG. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $411
EUG
Mahlon Sweet Field
CheapestClosest
Average driving time to city center14 min
Flights from $411

Find the cheapest month to fly from Santa Rosa (STS) to Eugene (EUG)

November is typically the cheapest month to fly

From $224 - $835 per traveler.
Flights from Santa Rosa (STS) to Eugene (EUG)
Origin airport
Sonoma County
Destination airport
Eugene
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines, Southwest Airlines
Roundtrip price
$196
Distance
388 mi

Santa Rosa to Eugene Flights

The cheapest times to fly from Santa Rosa to Eugene

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

 

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

Sunday is one of the best days to book for cheap flights from Santa Rosa to Eugene: 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 Santa Rosa to Eugene

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 Santa Rosa to Eugene in 2026. You can also book with separate airlines for your outbound and return journeys, from $99 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 Santa Rosa to Eugene 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 Santa Rosa to Eugene 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 Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) cost?
You can find cheap one-way flights from $99 and cheap return flights from $197 Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) with Expedia. One-way flights typically cost between $206 and $855, and return flights often range between $371 and $1440. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
The cheapest month to fly from STS to EUG is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
Enter STS to EUG and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
Alaska Airlines is one of the cheapest airlines offering connecting flights from Sonoma County (STS) to Mahlon Sweet Field (EUG), with round-trip tickets starting from around $972. This flight includes a layover in Las Vegas (LAS). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
To find a cheap flight from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
The earliest flight from Sonoma County (STS) to Mahlon Sweet Field (EUG) typically departs at around 6:00 AM, operated by Alaska Airlines. This seasonal service is available in August and September, and an early flight can help you enjoy a full day in Eugene. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
The most popular departure times for flights from Santa Rosa (STS) to Eugene (EUG) are from 6am to 9am. This time window accounts for around 30% of total traffic. Many major carriers, including Alaska Airlines and United Airlines, offer flights during this window. This timing is popular because it allows you to start your day early and make the most of your time in Eugene.
How long does it take to fly from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
Flying from STS to EUG with a connection usually takes about 7 hours, traveling roughly 388 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
Select the "Business class" and "First class" filters when looking for STS to EUG flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) flight with Expedia?
It's easy to earn miles on a Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Eugene from Sonoma County (STS)?
From Sonoma County (STS), you can fly into Mahlon Sweet Field (EUG) to reach Eugene. Some flights may connect through major hubs like Los Angeles Intl. (LAX), Harry Reid Intl. (LAS), John Wayne (SNA) before reaching Eugene. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) at the last minute?
Typically, booking a last minute flight from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) flight and hotel package?
Securing a Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) Eugene Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG)?
If you booked your Santa Rosa, CA (STS-Sonoma County) to Eugene, OR (EUG) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

*Flight schedules are subject to change.

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