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HK$6,370+ Cheap flights to Santa Rosa

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26-10. Fares are subject to change and may not be available on all flights or dates of travel.
— STS
20 Nov — 27 Nov1
1 adult
1 adult, Economy

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Cheapest flights to Santa Rosa
Explore the most affordable flight options available to Santa Rosa. Find the lowest fares based on data from user searches, with prices last updated on 21 October 2025.

Fri 24-1000:05HKG - STS
1 stop31h 46mMultiple Airlines
Wed 5-1107:45STS - HKG
1 stop30h 45mMultiple Airlines
Deal found 20-10HK$9,562
Sat 25-1019:40HKG - STS
2 stops41h 57mQatar Airways
Wed 5-1107:00STS - HKG
2 stops46h 40mQatar Airways
Deal found 20-10HK$17,656

Flights to Santa Rosa in 2025

Find the latest flights to Santa Rosa in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 21 October 2025.

Return from

HK$5,018

One-way from

HK$6,370

Popular in

July

Cheapest in

September

Average price

HK$5,857
星宇航空
  • 星宇航空
  • 4-12-11-12
  • 2 total stops
  • 42h 35m total
  • Hong Kong to San Francisco
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26-10
  • 26-10
  • 1 total stop
  • 24h 40m total
  • Hong Kong to Santa Rosa
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (HK$886 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$150 potential savings vs. average return price).
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Average for return flights in October 2025
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Cheapflights Fare Finder

 
Locate flights to Santa Rosa that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 21 October 2025.
Use the filters below to find and compare flights to Santa Rosa that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Fri 20-2

09:05-22:53

2 stops29h 48m

Santa Rosa Sonoma County

Tue 24-2

19:59-22:20

2 stops34h 21m

HK$17,260

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Thu 19-2

00:25-22:53

2 stops38h 28m

Santa Rosa Sonoma County

Tue 24-2

11:18-21:40

2 stops42h 22m

HK$17,493

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Mon 27-10

19:50-17:54

1 stop37h 04m

HK$6,370

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Sun 18-1

12:35-22:58

1 stop26h 23m

HK$6,758

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Sun 26-10

12:35-10:10

1 stop36h 35m

HK$6,758

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Tue 28-10

10:20-22:05

2 stops26h 45m

HK$7,224

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Mon 27-10

10:20-22:05

2 stops26h 45m

HK$7,224

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Mon 27-10

15:35-17:54

2 stops41h 19m

HK$7,496

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Tue 28-10

15:35-17:54

2 stops41h 19m

HK$7,496

Hong KongSanta Rosa

HKG - STS

HKGSTS

Hong Kong Intl

Wed 29-10

10:20-17:54

2 stops22h 34m

HK$7,527

Flights are sorted by cheapest return flights first.

Deals found on 21-10

Showing 1-10 of 13 results
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Best time to book a flight to Santa Rosa

Have a flexible travel schedule? Discover the best time to fly to Santa Rosa with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to Santa Rosa

Rainfall in Santa Rosa by month

Plan your trip to Santa Rosa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Santa Rosa ranges from 0.0 - 180.0 mm per month. January is typically the wettest month, when rainfall can reach 180.0 mm. July is typically the driest time to visit Santa Rosa when rainfall is around 0.0 mm.

Temperature in Santa Rosa by month

Plan your trip to Santa Rosa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Santa Rosa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 8.0 C).

How long is the flight to Santa Rosa?

On average, a flight from Hong Kong to Santa Rosa takes 19 hours 6 minutes. Flights to Santa Rosa from other popular cities in Hong Kong will vary in length. Below are a few examples of popular routes and their flight times.

FAQs about flying to Santa Rosa

  • What airport do you fly into for flights to Santa Rosa?

    Booking a flight to Santa Rosa Sonoma County (STS) is your only option if you intend on flying to Santa Rosa. It is only a 11.5 km journey from Sonoma County to Santa Rosa’s city centre.

  • Can I find cheaper flights to Santa Rosa if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Santa Rosa on Cheapflights that require 1 or 2 stops for potential cost savings.

  • Does Santa Rosa Sonoma County have rental cars?

    Yes. Those touching down at Santa Rosa Sonoma County can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Santa Rosa Sonoma County?

    Yes. Santa Rosa Sonoma County has hotels nearby for those requiring accommodations. Healdsburg, Ca Amazing Resort-Like Estate Healdsburg -- 4bd / 3ba is the closest property to Santa Rosa Sonoma County (0.0 km away from Santa Rosa Sonoma County).

See more FAQs

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How does Cheapflights help users find flights to Santa Rosa?

Deals for Santa Rosa flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets to Santa Rosa?

Millions of users choose and trust Cheapflights to book the best flight deals to Santa Rosa for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights to Santa Rosa with no change fees?

Certainly. Search results for flights to Santa Rosa shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights to Santa Rosa become cheaper?

Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Santa Rosa today and book when you’re ready!

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