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CA $138 Cheap Flights from Seattle (SEA) to Santa Rosa (STS)

View CA $138 flight on Sat, Sep 26, 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 and start at CA $138 for one-way flights and CA $333 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Oct 20 - Sat, Nov 7
SEA
Seattle
STS
Santa Rosa
CA $333 Roundtrip, found 3 days ago
CA $333
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Oct 20 from Seattle to Santa Rosa, returning Sat, Nov 7, priced at CA $333 found 3 days ago
American Airlines
Tue, Oct 20 - Thu, Nov 12
SEA
Seattle
STS
Santa Rosa
CA $359 Roundtrip, found 3 days ago
CA $359
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Oct 20 from Seattle to Santa Rosa, returning Thu, Nov 12, priced at CA $359 found 3 days ago
Alaska Airlines
Tue, Oct 13 - Fri, Oct 30
SEA
Seattle
STS
Santa Rosa
CA $382 Roundtrip, found 3 days ago
CA $382
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Oct 13 from Seattle to Santa Rosa, returning Fri, Oct 30, priced at CA $382 found 3 days ago
American Airlines
Wed, Sep 9 - Tue, Sep 29
SEA
Seattle
STS
Santa Rosa
CA $386 Roundtrip, found 3 days ago
CA $386
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 9 from Seattle to Santa Rosa, returning Tue, Sep 29, priced at CA $386 found 3 days ago
Delta
Fri, Oct 30 - Mon, Nov 2
SEA
Seattle
STS
Santa Rosa
CA $387 Roundtrip, found 6 days ago
CA $387
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Oct 30 from Seattle to Santa Rosa, returning Mon, Nov 2, priced at CA $387 found 6 days ago
Alaska Airlines
Mon, Oct 19 - Fri, Oct 30
SEA
Seattle
STS
Santa Rosa
CA $388 Roundtrip, found 3 days ago
CA $388
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Oct 19 from Seattle to Santa Rosa, returning Fri, Oct 30, priced at CA $388 found 3 days ago
Alaska Airlines
Thu, Sep 3 - Sat, Sep 5
SEA
Seattle
STS
Santa Rosa
CA $391 Roundtrip, found 3 days ago
CA $391
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Sep 3 from Seattle to Santa Rosa, returning Sat, Sep 5, priced at CA $391 found 3 days ago
Alaska Airlines
Wed, Oct 21 - Fri, Oct 30
SEA
Seattle
STS
Santa Rosa
CA $396 Roundtrip, found 5 days ago
CA $396
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Oct 21 from Seattle to Santa Rosa, returning Fri, Oct 30, priced at CA $396 found 5 days ago
Alaska Airlines
Thu, Oct 22 - Fri, Oct 30
SEA
Seattle
STS
Santa Rosa
CA $404 Roundtrip, found 5 days ago
CA $404
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Oct 22 from Seattle to Santa Rosa, returning Fri, Oct 30, priced at CA $404 found 5 days ago
Alaska Airlines
Sun, Sep 6 - Fri, Sep 18
SEA
Seattle
STS
Santa Rosa
CA $405 Roundtrip, found 3 days ago
CA $405
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sun, Sep 6 from Seattle to Santa Rosa, returning Fri, Sep 18, priced at CA $405 found 3 days 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 centre is 10 minutes. Flights from CA $477
STS
Sonoma County
CheapestClosest
Average driving time to city centre10 min
Flights from CA $477

Find the cheapest month to fly from Seattle (SEA) to Santa Rosa (STS)

February is typically the cheapest month to fly

From CA $208 - CA $790 per traveller.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County) cost?
You can find cheap one-way flights from CA $138 and cheap return flights from CA $333 SEA to STS with Expedia. One-way flights typically cost between CA$176 and CA$669. 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 SEA to STS ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The cheapest months to fly from SEA to STS are typically during off-peak season 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 are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Enter SEA to STS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Alaska Airlines is one of the cheapest airlines offering nonstop return flights from Seattle - Tacoma Intl. (SEA) to Sonoma County (STS), with tickets starting from around CA$161 for flights that can be booked for departure within the next year. Southwest Airlines offers one of the cheapest connecting return flights from Seattle - Tacoma Intl. (SEA) to Sonoma County (STS) with a layover in Sacramento Intl. (SMF), starting from around CA$233. These prices are per adult for economy/coach class. 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.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County), 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 airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, Alaska Airlines typically offers the lowest fares. Alaska Airlines offers the most daily flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
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.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
There are approximately 15 connecting flights per day from Seattle - Tacoma Intl. (SEA) to Sonoma County (STS). Some common connection points include Portland Intl. (PDX), Los Angeles Intl. (LAX), and Sacramento Intl. (SMF).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Sonoma County (STS) typically departs around 12:25 AM. This service is offered by Alaska Airlines and American Airlines. This is a seasonal service, active in June and August. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
You'll find the most flights from Seattle - Tacoma Intl. (SEA) to Sonoma County (STS) on a Thursday, with around 30 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Alaska Airlines, Southwest Airlines, and American Airlines. Thursdays and Fridays tend to have notably more flight options compared to other days of the week, offering you greater flexibility.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Sonoma County (STS) are between 9am and 12pm. Many major carriers, including Alaska Airlines, Southwest Airlines and American Airlines, offer flights during this window. Many travellers prefer these times as they allow for a relaxed morning before heading to the airport, and you'll arrive at your destination with plenty of time to settle in.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
There are no nonstop flights from Seattle - Tacoma Intl. (SEA) to Sonoma County (STS). The distance between these two airports is approximately 995 kilometres. If you're flying with one stop, your journey will typically take around 6 hours. Flights with two or more stops usually take longer, averaging about 15 hours 18 minutes. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Select the "Business class" and "First class" filters when looking for SEA to STS 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County) 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 Santa Rosa, CA (STS) from Seattle, WA (SEA)?
If you're planning to travel to Santa Rosa from Seattle - Tacoma Intl. (SEA), you can fly directly into Sonoma County (STS) which offers domestic flights and connections. Some flights may connect through major hubs like San Francisco Intl. (SFO), Sky Harbor Intl. (PHX), or Harry Reid International Airport (LAS) before reaching Santa Rosa. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County) 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County) flight and hotel package 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santa Rosa, CA (STS-Sonoma County) 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.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Sonoma County
Airlines serving
Alaska Airlines
Roundtrip price
CA $333
Distance
988 km
Average flight time
2 hours 3 mins

Book with confidence

Seattle to Windsor Flights

The easy way to book your flights from Seattle to Santa Rosa 

With Expedia, it’s simple to find and book flights to Santa Rosa from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Sonoma County, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Santa Rosa today, tomorrow, or this week.  

 

Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Sonoma County, STS 

Sort your search results by price to find great deals on your flight from Seattle to Santa Rosa—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Santa Rosa from Seattle currently is just CA $333 rising to CA $405.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Santa Rosa  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Santa Rosa from Seattle 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Santa Rosa with Expedia today.

Seattle to Windsor Flights

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