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Santa Rosa

$79+ Cheap flights from Riverside, CA to Santa Rosa (STS)

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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — STS
Feb 10 — Feb 171
Tue 2/10
Tue 2/17
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to Santa Rosa Sonoma County are usually found in February or July, booked 69 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap flight deals from Riverside to Santa Rosa

Keep the following information in mind while searching for Riverside to Santa Rosa flight deals. Data was last updated January 11, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$157
(Alaska Airlines)

One-way from

$79
(SmartFares)

Popular in

November

Cheapest in

February

Average price

$237
Provider with most accurate pricing for Los Angeles-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-San Francisco flights.
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From Riverside to Santa Rosa Sonoma County
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One-way flight from Riverside to Santa Rosa Sonoma County
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Highest demand for flights based on searches. 8% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Riverside to Santa Rosa

Cheapest flights from Riverside to Santa Rosa
Explore the most affordable flight options available from Riverside to Santa Rosa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 11, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/610:10 pmLAX - STS
Nonstop1h 47mAlaska Airlines
Sun 3/87:48 pmSTS - LAX
Nonstop1h 40mAlaska Airlines
Deal found 1/8$157
This American Airlines deal was found by Cheapflights users on 1/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/79:00 amLAX - STS
1 stop6h 53mAmerican Airlines
Sat 2/144:17 pmSTS - LAX
1 stop5h 37mAmerican Airlines
Deal found 1/9$159
This Kiwi.com deal was found by Cheapflights users on 1/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/118:35 amLAX - STS
Nonstop1h 50mAlaska Airlines
Mon 2/167:00 amSTS - LAX
Nonstop1h 47mAlaska Airlines
Deal found 1/9$166
This Alaska Airlines deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/309:16 pmLAX - STS
Nonstop1h 42mAlaska Airlines
Sun 2/17:56 pmSTS - LAX
Nonstop1h 38mAlaska Airlines
Deal found 1/10$177
This American Airlines deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/316:38 amLAX - STS
1 stop5h 47mAmerican Airlines
Sat 2/712:55 pmSTS - LAX
1 stop5h 39mAmerican Airlines
Deal found 1/10$178
This American Airlines deal was found by Cheapflights users on 1/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2410:19 amLAX - STS
1 stop5h 28mAmerican Airlines
Tue 3/34:17 pmSTS - LAX
1 stop5h 37mAmerican Airlines
Deal found 1/9$179
This Alaska Airlines deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/48:35 amLAX - STS
Nonstop1h 50mAlaska Airlines
Tue 2/106:50 amSTS - LAX
1 stop10h 32mAlaska Airlines
Deal found 1/8$180
This Alaska Airlines deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/18:06 amLAX - STS
Nonstop1h 50mAlaska Airlines
Tue 2/37:00 amSTS - LAX
Nonstop1h 56mAlaska Airlines
Deal found 1/10$187
This American Airlines deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/16:38 amLAX - STS
1 stop5h 47mAmerican Airlines
Tue 2/312:55 pmSTS - LAX
1 stop5h 39mAmerican Airlines
Deal found 1/10$188
This Kiwi.com deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/318:35 amLAX - STS
Nonstop1h 50mAlaska Airlines
Mon 2/29:33 pmSTS - LAX
1 stop16h 08mAlaska Airlines
Deal found 1/10$189
This Alaska Airlines deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/47:45 pmLAX - STS
1 stop28h 14mAlaska Airlines
Wed 2/117:00 amSTS - LAX
Nonstop1h 56mAlaska Airlines
Deal found 1/11$190
This Trip.com deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:35 pmLAX - STS
Nonstop1h 42mAlaska Airlines
Wed 7/15:52 pmSTS - LAX
Nonstop1h 40mAlaska Airlines
Deal found 1/11$195

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside to Santa Rosa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 11, 2026.
Use the filters below to find and compare flights from Riverside to Santa Rosa that are best for you.

Fly from

Riverside

Fly to

Santa Rosa

Route

Depart

Return

Price

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Sat 2/7

8:35 am-10:25 am

Nonstop1h 50m

Santa Rosa Sonoma County

Sun 2/8

7:56 pm-9:34 pm

Nonstop1h 38m

$157

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Fri 2/27

8:19 am-10:11 am

Nonstop1h 52m

Santa Rosa Sonoma County

Mon 3/2

7:00 am-8:47 am

Nonstop1h 47m

$177

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Fri 1/30

9:16 pm-10:58 pm

Nonstop1h 42m

Santa Rosa Sonoma County

Sun 2/1

7:56 pm-9:34 pm

Nonstop1h 38m

$177

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Wed 2/4

8:35 am-10:25 am

Nonstop1h 50m

Santa Rosa Sonoma County

Tue 2/10

6:50 am-5:22 pm

1 stop10h 32m

$180

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Sun 2/1

8:06 am-9:56 am

Nonstop1h 50m

Santa Rosa Sonoma County

Tue 2/3

7:00 am-8:56 am

Nonstop1h 56m

$187

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Sun 2/1

8:06 am-9:56 am

Nonstop1h 50m

Santa Rosa Sonoma County

Mon 2/2

7:56 pm-9:34 pm

Nonstop1h 38m

$187

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Sun 2/8

8:06 am-9:56 am

Nonstop1h 50m

Santa Rosa Sonoma County

Wed 2/11

7:00 am-8:56 am

Nonstop1h 56m

$187

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Thu 6/18

8:39 am-10:17 am

Nonstop1h 38m

Santa Rosa Sonoma County

Sun 6/21

6:20 am-7:55 am

Nonstop1h 35m

$187

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Fri 7/3

6:35 pm-8:17 pm

Nonstop1h 42m

Santa Rosa Sonoma County

Sun 7/5

6:20 am-7:55 am

Nonstop1h 35m

$187

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Sun 2/1

6:38 am-12:25 pm

1 stop5h 47m

Santa Rosa Sonoma County

Tue 2/3

12:55 pm-6:34 pm

1 stop5h 39m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Showing 1-10 of 20 results
1
2

Best time to book a flight from Riverside to Santa Rosa

Have a flexible travel schedule? Discover the best time to fly to Santa Rosa from Riverside with our price prediction graph.
Estimated round-trip 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 from Riverside to Santa Rosa

How far ahead should I book a flight from Riverside to Santa Rosa?

Use this chart to determine the optimal time to book a round-trip flight from Riverside to Santa Rosa. Price data was last updated on January 9, 2026.

The best time to book flights from Riverside to Santa Rosa is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Riverside to Santa Rosa?

Currently, January is the cheapest month in which you can book a flight from Riverside to Santa Rosa (average of $19). Flying from Riverside to Santa Rosa in July is currently the most expensive (average of $57). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from R1V to STS?

Find hourly flight availability from Riverside to Santa Rosa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 11, 2026.

When flying from Riverside to Santa Rosa, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 37% versus a flight at noon.

What is the cheapest day to fly from Riverside to Santa Rosa?

Use this chart to determine the cheapest time to fly round-trip from Riverside to Santa Rosa. Price data was last updated on January 3, 2026.

Travelers seeking maximum savings on their Riverside to Santa Rosa flight should consider departing on Friday mornings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Riverside to Santa Rosa

Explore weekly flight availability from Riverside to Santa Rosa. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 11, 2026.

The most flights from R1V to STS are scheduled on a Friday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Santa Rosa

Get insights into the airlines that provide service to Santa Rosa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Santa Rosa. Reviews last updated January 11, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Hawaiian Airlines, and Avelo Airlines from Riverside to Santa Rosa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,685 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,685 reviews
Alaska Airlines
8.0
Very good
11,685 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,825 reviews
Alaska Airlines
8.0
Very good
11,685 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Avelo Airlines
7.6
Good
Alaska Airlines
8.0
Very good
11,685 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
11,099 reviews
Alaska Airlines
8.0
Very good
11,685 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.7
Fair
3,057 reviews
Alaska Airlines
8.0
Very good
11,685 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Riverside to Santa Rosa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    If you book a flight to Santa Rosa from Riverside, you will be flying to Sonoma County, which is the city’s only airport. Santa Rosa Sonoma County (STS) is located 7.2 mi from the center of Santa Rosa. There are 5 flights from Riverside to Sonoma County per day from 5 different airlines.

  • How popular is this Riverside to Santa Rosa flight route?

    Within the past month, 5 users have taken a look at flights from Riverside to Santa Rosa Sonoma County.

  • How long is the flight from Riverside to Santa Rosa?

    Airlines like Alaska Airlines fly from Riverside to Santa Rosa in about 1h 50m. The time it takes to get you to your destination is usually consistent. Riverside and Santa Rosa are separated by a distance of 399 mi. All flights are typically nonstop.

  • What are the cheapest airlines to fly from Riverside to Santa Rosa one-way?

    The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $68. However, be on the lookout for offers from Alaska Airlines and American Airlines, as they are both options that can get you from Riverside to Santa Rosa for a low price.

  • What are the most reliable airlines from Riverside to Santa Rosa?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Riverside to Santa Rosa on time: Japan Airlines (84%), Horizon Air (76%), Alaska Airlines (76%).

  • What are the cheapest flights from Riverside to Santa Rosa?

    On average you can expect to pay $222 for a flight from Riverside to Santa Rosa. The cheapest flight overall is $78 while the most popular route, (Los Angeles - Santa Rosa Sonoma County) is currently priced at $117.

  • Can I find deals for flights from Riverside to Santa Rosa that include hotel bookings?

    Yes. In addition to deals on Riverside to Santa Rosa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Riverside to Santa Rosa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Riverside to Santa Rosa.

  • Can I find deals for business class flights from Riverside to Santa Rosa?

    Yes. Cheapflights offers flight deals from Riverside to Santa Rosa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Riverside to Santa Rosa?

    Currently, January is the cheapest month in which you can book a flight from Riverside to Santa Rosa (average of $19). Flying from Riverside to Santa Rosa in July is currently the most expensive (average of $57). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Santa Rosa?

Book flights to Santa Rosa if you plan to visit one of these locations
Fort Bragg
Ukiah

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Alternative routes for Riverside to Santa Rosa

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Top 5 airlines flying from Riverside to Santa Rosa

Discover the top 5 airlines that operate flights from Riverside to Santa Rosa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$130FlexibilityNo cancel feeOn-time62%
Avelo AirlinesCheapest$47Average$141FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$117Average$269FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$137Average$292FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$222Average$394FlexibilityNo cancel feeOn-time71%

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