Cheap Flights to Sonoma County | Popular Routes to Sonoma County from HK$2,123

View HK$2,123 flight on Wed, 7 Jan 2026Opens in a new window

Popular airlines to Sonoma County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Alaska Airlines

    Alaska Airlines

  • Frontier Airlines

    Frontier Airlines

  • Southwest Airlines

    Southwest Airlines

  • Spirit Airlines

    Spirit Airlines

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Cheap round-trip flights to Sonoma County

Prices were available within the past 7 days and start at HK$2,123 for one-way flights and HK$3,664 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 6 Jan - Fri, 9 Jan
SAN
San Diego
OAK
Oakland
HK$3,664 Return, found 1 day ago
HK$3,664
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from San Diego to Oakland, returning Fri, 9 Jan, priced at HK$3,664 found 1 day ago
Delta
Mon, 5 Jan - Thu, 8 Jan
SAN
San Diego
OAK
Oakland
HK$3,955 Return, found 2 days ago
HK$3,955
Return
found 2 days ago
Select Delta flight, departing Mon, 5 Jan from San Diego to Oakland, returning Thu, 8 Jan, priced at HK$3,955 found 2 days ago
Delta
Tue, 6 Jan - Fri, 9 Jan
SAN
San Diego
OAK
Oakland
HK$4,127 Return, found 1 day ago
HK$4,127
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from San Diego to Oakland, returning Fri, 9 Jan, priced at HK$4,127 found 1 day ago
Delta
Mon, 5 Jan - Thu, 8 Jan
SAN
San Diego
OAK
Oakland
HK$4,417 Return, found 2 days ago
HK$4,417
Return
found 2 days ago
Select Delta flight, departing Mon, 5 Jan from San Diego to Oakland, returning Thu, 8 Jan, priced at HK$4,417 found 2 days ago
Delta
Wed, 7 Jan - Sat, 10 Jan
SAN
San Diego
OAK
Oakland
HK$4,524 Return, found 9 hours ago
HK$4,524
Return
found 9 hours ago
Select Delta flight, departing Wed, 7 Jan from San Diego to Oakland, returning Sat, 10 Jan, priced at HK$4,524 found 9 hours ago
Delta
Tue, 6 Jan - Fri, 9 Jan
SAN
San Diego
OAK
Oakland
HK$4,675 Return, found 1 day ago
HK$4,675
Return
found 1 day ago
Select Delta flight, departing Tue, 6 Jan from San Diego to Oakland, returning Fri, 9 Jan, priced at HK$4,675 found 1 day ago
China Airlines
Sun, 26 Apr - Sat, 30 May
HKG
Hong Kong SAR
OAK
Oakland
HK$6,013 Return, found 4 days ago
HK$6,013
Return
found 4 days ago
Select China Airlines flight, departing Sun, 26 Apr from Hong Kong SAR to Oakland, returning Sat, 30 May, priced at HK$6,013 found 4 days ago
EVA Airways
Fri, 1 May - Sun, 3 May
HKG
Hong Kong SAR
STS
Santa Rosa
HK$6,549 Return, found 18 hours ago
HK$6,549
Return
found 18 hours ago
Select EVA Airways flight, departing Fri, 1 May from Hong Kong SAR to Santa Rosa, returning Sun, 3 May, priced at HK$6,549 found 18 hours ago
British Airways
Mon, 12 Jan - Sat, 17 Jan
FRA
Frankfurt
OAK
Oakland
HK$10,563 Return, found 10 hours ago
HK$10,563
Return
found 10 hours ago
Select British Airways flight, departing Mon, 12 Jan from Frankfurt to Oakland, returning Sat, 17 Jan, priced at HK$10,563 found 10 hours ago
Korean Air
Tue, 10 Feb - Mon, 16 Feb
HKG
Hong Kong SAR
OAK
Oakland
HK$11,677 Return, found 19 hours ago
HK$11,677
Return
found 19 hours ago
Select Korean Air flight, departing Tue, 10 Feb from Hong Kong SAR to Oakland, returning Mon, 16 Feb, priced at HK$11,677 found 19 hours ago

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.

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$3,664 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$3,664 and HK$11,677. Many lucky travelers nabbed one-way seats from San Diego (SAN) for as little as HK$2,123.
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$3,664 to HK$11,677 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.

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.

China Airlines
Sun, 26 Apr - Sat, 30 May
HKG
Hong Kong SAR
OAK
Oakland
HK$6,013 Return, found 4 days ago
HK$6,013
Return
found 4 days ago
Select China Airlines flight, departing Sun, 26 Apr from Hong Kong SAR to Oakland, returning Sat, 30 May, priced at HK$6,013 found 4 days ago
*Available to Expedia members.