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Santa Rosa

$77+ Cheap flights from Irvine, 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — STS
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheapflights Tip: The best prices from Irvine to Santa Rosa Sonoma County are usually found in January or February, booked 69 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap flight deals from Irvine to Santa Rosa

Cheapest flights from Irvine to Santa Rosa
Explore the most affordable flight options available from Irvine to Santa Rosa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/298:35 amLAX - STS
Nonstop1h 56mAlaska Airlines
Sat 1/37:00 amSTS - LAX
Nonstop1h 37mAlaska Airlines
Deal found 12/21$352
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Mon 12/297:50 pmLAX - STS
1 stop3h 50mAlaska Airlines
Mon 1/53:53 pmSTS - LAX
Nonstop1h 32mAlaska Airlines
Deal found 12/22$362
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Tue 12/307:50 pmLAX - STS
1 stop3h 50mAlaska Airlines
Mon 1/57:00 amSTS - LAX
Nonstop1h 37mAlaska Airlines
Deal found 12/22$402
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Tue 12/3010:32 pmLAX - STS
Nonstop1h 46mAlaska Airlines
Fri 1/26:37 pmSTS - LAX
Nonstop1h 44mAlaska Airlines
Deal found 12/22$407
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Mon 12/2910:32 pmLAX - STS
Nonstop1h 46mAlaska Airlines
Wed 12/313:53 pmSTS - LAX
Nonstop1h 32mAlaska Airlines
Deal found 12/22$447
This SmartFares deal was found by Cheapflights users on 12/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:32 pmLAX - STS
Nonstop1h 46mAlaska Airlines
Fri 12/267:00 amSTS - LAX
Nonstop1h 37mAlaska Airlines
Deal found 12/22$448
This Kiwi.com deal was found by Cheapflights users on 12/23. 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.
Mon 12/2910:32 pmLAX - STS
Nonstop1h 46mAlaska Airlines
Tue 12/303:53 pmSTS - LAX
Nonstop1h 32mAlaska Airlines
Deal found 12/23$452
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Mon 12/297:50 pmLAX - STS
1 stop3h 50mAlaska Airlines
Fri 1/26:37 pmSTS - LAX
Nonstop1h 44mAlaska Airlines
Deal found 12/22$457
This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Thu 12/251:32 pmLAX - STS
Nonstop1h 41mAlaska Airlines
Thu 12/256:37 pmSTS - LAX
Nonstop1h 44mAlaska Airlines
Deal found 12/21$481

Find flight deals from Irvine to Santa Rosa

Keep the following information in mind while searching for Irvine to Santa Rosa flight deals. Data was last updated December 23, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$147
(Alaska Airlines)

One-way from

$77
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$247
Provider with most accurate pricing for Los Angeles-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-San Francisco flights.
Search Deals
From Irvine to Santa Rosa Sonoma County
Search Deals
One-way flight from Irvine to Santa Rosa Sonoma County
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Irvine 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 December 23, 2025.
Use the filters below to find and compare flights from Irvine to Santa Rosa that are best for you.

Fly from

Irvine

Fly to

Santa Rosa

Route

Depart

Return

Price

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Mon 1/12

8:06 am-9:56 am

Nonstop1h 50m

Santa Rosa Sonoma County

Mon 1/12

7:56 pm-9:34 pm

Nonstop1h 38m

$157

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Wed 1/14

8:35 am-10:25 am

Nonstop1h 50m

Santa Rosa Sonoma County

Fri 1/16

9:33 pm-10:58 pm

1 stop25h 25m

$170

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Sat 3/7

6:30 am-9:52 pm

1 stop15h 22m

Santa Rosa Sonoma County

Sun 3/8

7:48 pm-9:28 pm

Nonstop1h 40m

$190

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Wed 1/21

8:35 am-10:25 am

Nonstop1h 50m

Santa Rosa Sonoma County

Sat 1/24

6:50 am-5:22 pm

1 stop10h 32m

$196

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Wed 3/18

8:00 am-9:36 am

Nonstop1h 36m

Santa Rosa Sonoma County

Fri 3/20

1:22 pm-3:04 pm

Nonstop1h 42m

$197

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Sat 1/17

8:35 am-10:25 am

Nonstop1h 50m

Santa Rosa Sonoma County

Mon 1/19

6:50 am-9:51 am

1 stop27h 01m

$206

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Fri 1/9

9:16 pm-10:58 pm

Nonstop1h 42m

Santa Rosa Sonoma County

Mon 1/12

7:00 am-8:56 am

Nonstop1h 56m

$207

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Wed 1/7

8:35 am-10:25 am

Nonstop1h 50m

Santa Rosa Sonoma County

Tue 1/13

7:00 am-8:56 am

Nonstop1h 56m

$207

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Thu 1/8

8:06 am-9:56 am

Nonstop1h 50m

Santa Rosa Sonoma County

Sun 1/11

7:00 am-8:56 am

Nonstop1h 56m

$217

Los AngelesSanta Rosa

LAX - STS

LAXSTS

Los Angeles

Thu 2/26

6:30 am-11:50 pm

1 stop17h 20m

Santa Rosa Sonoma County

Tue 3/3

7:57 pm-1:29 pm

1 stop17h 32m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 23 results
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Best time to book a flight from Irvine to Santa Rosa

Have a flexible travel schedule? Discover the best time to fly to Santa Rosa from Irvine 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 Irvine to Santa Rosa

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

Use this chart to determine the optimal time to book a round-trip flight from Irvine to Santa Rosa. Price data was last updated on December 19, 2025.

The best time to book flights from Irvine 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 Irvine to Santa Rosa?

Currently, February is the cheapest month in which you can book a flight from Irvine to Santa Rosa (average of $18). Flying from Irvine 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 IR9 to STS?

Find hourly flight availability from Irvine 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 December 23, 2025.

It’s optimal to fly from Irvine to Santa Rosa in the evening. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Irvine to Santa Rosa. Price data was last updated on December 20, 2025.

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

Weekly flight availability from Irvine to Santa Rosa

Explore weekly flight availability from Irvine 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 December 23, 2025.

The most flights from IR9 to STS are scheduled on a Sunday (16 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (7 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 December 23, 2025.
Read through reviews of airlines operating flights from Irvine to Santa Rosa, such as Alaska Airlines, Hawaiian Airlines, and Avelo Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

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
11,512 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

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
2,820 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

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
7.5
Good
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

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
11,054 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

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
5.8
Fair
3,075 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

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 Irvine 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 Irvine?

    Located just 7.2 mi from the city center, Santa Rosa Sonoma County is the airport most travelers will use when flying to Santa Rosa from Irvine. Booking flights from Irvine to Sonoma County (STS) should be relatively easy as there are 12 daily inbound flights from Irvine from 5 different airlines.

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

    The Irvine to Santa Rosa Sonoma County flight path was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

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

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

    $68 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on Alaska Airlines and American Airlines, with prices starting from $73 and $79, respectively.

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

    No one likes to see their flight delayed. When booking a flight from Irvine to Santa Rosa consider choosing Japan Airlines (88%), SkyWest Airlines (82%) or Alaska Airlines (79%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $228 for a flight from Irvine to Santa Rosa. The cheapest flight overall is $98 while the most popular route, (Los Angeles - Santa Rosa Sonoma County) is currently priced at $117.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Irvine 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 Irvine to Santa Rosa?

    Currently, February is the cheapest month in which you can book a flight from Irvine to Santa Rosa (average of $18). Flying from Irvine 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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Top 5 airlines flying from Irvine to Santa Rosa

Discover the top 5 airlines that operate flights from Irvine 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$130FlexibilityNo cancel feeOn-time62%
Avelo AirlinesCheapest$47Average$145FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$88Average$282FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$117Average$258FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$222Average$324FlexibilityNo cancel feeOn-time71%

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