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Cheap Flights to Sonoma County | Popular Routes to Sonoma County from HK$638

View HK$638 flight on Wed, 21 Oct 2026Opens in a new window

Popular airlines to Sonoma County

  • Alaska Airlines

  • American Airlines

  • Delta

  • United

  • Frontier Airlines

  • JetBlue Airways

  • Southwest Airlines

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Cheap round-trip flights to Sonoma County

Prices were available within the past 7 days and start at HK$638 for one-way flights and HK$1,637 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 17 Oct - Wed, 21 Oct
SEA
Seattle
OAK
Oakland
HK$1,637 Return, found 16 hours ago
HK$1,637
Return
found 16 hours ago
Select Delta flight, departing Sat, 17 Oct from Seattle to Oakland, returning Wed, 21 Oct, priced at HK$1,637 found 16 hours ago
Delta
Sat, 17 Oct - Wed, 21 Oct
SEA
Seattle
OAK
Oakland
HK$1,809 Return, found 16 hours ago
HK$1,809
Return
found 16 hours ago
Select Delta flight, departing Sat, 17 Oct from Seattle to Oakland, returning Wed, 21 Oct, priced at HK$1,809 found 16 hours ago
Delta
Sat, 17 Oct - Wed, 21 Oct
SEA
Seattle
OAK
Oakland
HK$1,949 Return, found 16 hours ago
HK$1,949
Return
found 16 hours ago
Select Delta flight, departing Sat, 17 Oct from Seattle to Oakland, returning Wed, 21 Oct, priced at HK$1,949 found 16 hours ago
Delta
Sat, 17 Oct - Wed, 21 Oct
SEA
Seattle
OAK
Oakland
HK$1,959 Return, found 16 hours ago
HK$1,959
Return
found 16 hours ago
Select Delta flight, departing Sat, 17 Oct from Seattle to Oakland, returning Wed, 21 Oct, priced at HK$1,959 found 16 hours ago
Delta
Sat, 17 Oct - Wed, 21 Oct
SEA
Seattle
OAK
Oakland
HK$1,992 Return, found 16 hours ago
HK$1,992
Return
found 16 hours ago
Select Delta flight, departing Sat, 17 Oct from Seattle to Oakland, returning Wed, 21 Oct, priced at HK$1,992 found 16 hours ago
Delta
Sat, 17 Oct - Wed, 21 Oct
SEA
Seattle
OAK
Oakland
HK$2,121 Return, found 16 hours ago
HK$2,121
Return
found 16 hours ago
Select Delta flight, departing Sat, 17 Oct from Seattle to Oakland, returning Wed, 21 Oct, priced at HK$2,121 found 16 hours ago
EVA Airways
Tue, 1 Sept - Tue, 8 Sept
HKG
Hong Kong SAR
STS
Santa Rosa
HK$7,895 Return, found 4 days ago
HK$7,895
Return
found 4 days ago
Select EVA Airways flight, departing Tue, 1 Sept from Hong Kong SAR to Santa Rosa, returning Tue, 8 Sept, priced at HK$7,895 found 4 days ago
Qatar Airways
Wed, 23 Dec - Fri, 1 Jan
HKG
Hong Kong SAR
OAK
Oakland
HK$9,333 Return, found 4 days ago
HK$9,333
Return
found 4 days ago
Select Qatar Airways flight, departing Wed, 23 Dec from Hong Kong SAR to Oakland, returning Fri, 1 Jan, priced at HK$9,333 found 4 days ago
Korean Air
Thu, 3 Sept - Sun, 6 Sept
HKG
Hong Kong SAR
OAK
Oakland
HK$12,745 Return, found 1 day ago
HK$12,745
Return
found 1 day ago
Select Korean Air flight, departing Thu, 3 Sept from Hong Kong SAR to Oakland, returning Sun, 6 Sept, priced at HK$12,745 found 1 day ago
Japan Airlines
Tue, 1 Sept - Tue, 8 Sept
HKG
Hong Kong SAR
STS
Santa Rosa
HK$13,751 Return, found 4 days ago
HK$13,751
Return
found 4 days ago
Select Japan Airlines flight, departing Tue, 1 Sept from Hong Kong SAR to Santa Rosa, returning Tue, 8 Sept, priced at HK$13,751 found 4 days ago

Trending flights to Sonoma County

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

EVA Airways
Tue, 1 Sept - Tue, 8 Sept
HKG
Hong Kong SAR
STS
Santa Rosa
HK$7,895 Return, found 4 days ago
HK$7,895
Return
found 4 days ago
Select EVA Airways flight, departing Tue, 1 Sept from Hong Kong SAR to Santa Rosa, returning Tue, 8 Sept, priced at HK$7,895 found 4 days 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, HK$1,637 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 HK$1,637 and HK$13,751. Many lucky travelers nabbed one-way seats from San Diego (SAN) for as little as HK$638.
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 HK$1,637 to HK$13,751 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 13ºC and 27ºC 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

Expedia offers flights to Sonoma County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Sonoma County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Sonoma County
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