Cheap Flights to Sonoma County from ₩131,400

View ₩131,400 flight on Tue, Apr 28, 2026Opens in a new window

Popular airlines to Sonoma County

  • Alaska Airlines

  • American Airlines

  • Delta

  • United

  • Frontier Airlines

  • Southwest Airlines

  • JetBlue Airways

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How much is the cheapest flight to Sonoma County?

Prices were available within the past 7 days and start at ₩131,400 for one-way flights and ₩614,900 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Mar 24 - Tue, Mar 31
ONT
Ontario
STS
Santa Rosa
₩614,900 Roundtrip, found 20 hours ago
₩614,900
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Tue, Mar 24 from Ontario to Santa Rosa, returning Tue, Mar 31, priced at ₩614,900 found 20 hours ago
Alaska Airlines
Thu, Mar 19 - Tue, Mar 31
ONT
Ontario
STS
Santa Rosa
₩705,500 Roundtrip, found 20 hours ago
₩705,500
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Thu, Mar 19 from Ontario to Santa Rosa, returning Tue, Mar 31, priced at ₩705,500 found 20 hours ago
American Airlines
Tue, Mar 24 - Mon, Mar 30
ONT
Ontario
STS
Santa Rosa
₩720,300 Roundtrip, found 20 hours ago
₩720,300
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Tue, Mar 24 from Ontario to Santa Rosa, returning Mon, Mar 30, priced at ₩720,300 found 20 hours ago
Alaska Airlines
Tue, Mar 24 - Sun, Mar 29
ONT
Ontario
STS
Santa Rosa
₩750,900 Roundtrip, found 20 hours ago
₩750,900
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Tue, Mar 24 from Ontario to Santa Rosa, returning Sun, Mar 29, priced at ₩750,900 found 20 hours ago
Alaska Airlines
Thu, Mar 19 - Sat, Mar 28
ONT
Ontario
STS
Santa Rosa
₩841,500 Roundtrip, found 20 hours ago
₩841,500
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Thu, Mar 19 from Ontario to Santa Rosa, returning Sat, Mar 28, priced at ₩841,500 found 20 hours ago
Hawaiian Airlines
Wed, Mar 25 - Thu, Mar 26
PDX
Portland
OAK
Oakland
₩856,200 Roundtrip, found 1 day ago
₩856,200
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Mar 25 from Portland to Oakland, returning Thu, Mar 26, priced at ₩856,200 found 1 day ago
Hawaiian Airlines
Wed, Mar 25 - Thu, Mar 26
PDX
Portland
OAK
Oakland
₩870,800 Roundtrip, found 1 day ago
₩870,800
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Mar 25 from Portland to Oakland, returning Thu, Mar 26, priced at ₩870,800 found 1 day ago
Hawaiian Airlines
Wed, Mar 25 - Thu, Mar 26
PDX
Portland
OAK
Oakland
₩908,000 Roundtrip, found 1 day ago
₩908,000
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Mar 25 from Portland to Oakland, returning Thu, Mar 26, priced at ₩908,000 found 1 day ago
Delta
Fri, Mar 20 - Mon, Mar 23
SAN
San Diego
OAK
Oakland
₩931,500 Roundtrip, found 1 day ago
₩931,500
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Mar 20 from San Diego to Oakland, returning Mon, Mar 23, priced at ₩931,500 found 1 day ago
Korean Air
Thu, Nov 12 - Thu, Nov 26
ICN
Seoul
OAK
Oakland
₩1,776,200 Roundtrip, found 20 hours ago
₩1,776,200
Roundtrip
found 20 hours ago
Select Korean Air flight, departing Thu, Nov 12 from Seoul to Oakland, returning Thu, Nov 26, priced at ₩1,776,200 found 20 hours ago

Trending flights to Sonoma County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Wed, Apr 1 - Sun, Apr 5
ICN
Seoul
OAK
Oakland
₩1,461,300 Roundtrip, found 1 day ago
₩1,461,300
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Apr 1 from Seoul to Oakland, returning Sun, Apr 5, priced at ₩1,461,300 found 1 day ago

Frequently asked questions

How do I find cheap flights to Sonoma County that have flexible change policies?
It's as easy as counting 1-2-3 with Expedia. Step 1: Enter your travel dates and destination and press "Search." Second step: Check "No change fee" directly underneath the "Flexible change policies" subheading on the top left of your screen. Step 3. Grab your cheap and flexible fare to Sonoma County.
Which airlines fly to Sonoma County?
When you're ready to lock in your ticket to or near Sonoma County, these leading airlines look forward to welcoming you on board:

  • Southwest Airlines - 2,314 flights to or near Sonoma County each month, including 2,314 flights to Oakland Intl. Airport (OAK) per month.
  • Alaska Airlines - 434 flights to or near Sonoma County each month, including 264 flights to Sonoma County Airport (STS) per month.
  • Spirit Airlines - 265 flights to or near Sonoma County each month, including 265 flights to Oakland Intl. Airport (OAK) per month.

How can I find cheap tickets to Sonoma County?
A helpful strategy for walking away with cheap airfares is to be flexible with your travel dates. Begin with searching for your flight to Sonoma County, then click on the "flexible dates" box to compare prices for nearby days. Want another tip? Book ahead of time. To give you an idea of fares, ₩614,900 was the best price for a flight to Sonoma County in the last seven days.
How much is a flight to Sonoma County?
There were a lot of low-cost fares up for grabs in the last seven days, with the cost of a return flight to Sonoma County ranging between ₩614,900 and ₩1,776,200. Many lucky travelers nabbed one-way seats from San Diego (SAN) for as little as ₩131,400.
What are the most popular airports to fly into in Sonoma County?
Which of these two Sonoma County airports you'll touch down at will depend largely on your chosen carrier and what you plan to see in the region:

  • Oakland Intl. Airport (OAK) - 3,086 flights per month.
  • Sonoma County Airport (STS) - 356 flights per month.

When is the cheapest time to fly to Sonoma County?
Fly out on a Tuesday to boost your odds of securing the cheapest deal to Sonoma County. Mondays are usually the second most affordable day to take off. Saturday is generally the most expensive day to fly anywhere.
How much is a plane ticket to Sonoma County?
Flights to Sonoma County ranged from ₩614,900 to ₩1,776,200 in the last seven days. Generally, the sooner you book the better the price.
What is the best time to go to Sonoma County?
Summer begins June 20 in the Northern Hemisphere, and these warmer months are a good time to visit the exciting Sonoma County city of Santa Rosa. Average temperatures range between 55ºF and 80ºF across the season. The biggest crowds can be found here in March, April and July.
What months are the cheapest to book a flight to Sonoma County?
To secure a fabulous deal to Sonoma County, try to book during the month of February when the price of tickets are at their cheapest. What time of year is expensive? In the United States, it's the festive month of December.

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About Sonoma County

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About Sonoma County

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