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$69+ Cheap flights from Santa Rosa to San Diego (STS - SAN)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SAN
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheapflights Tip: The best prices from Santa Rosa Sonoma County to San Diego are usually found in January or September, booked 77 days in advance, depart on a Tuesday or Thursday and return on a Saturday

Cheap flight deals from Santa Rosa to San Diego

Cheapest flights from Santa Rosa to San Diego
Explore the most affordable flight options available from Santa Rosa to San Diego. 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 12/22. 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 12/296:45 amSTS - SAN
Nonstop1h 52mAlaska Airlines
Thu 1/159:14 pmSAN - STS
Nonstop1h 57mAlaska Airlines
Deal found 12/22$322
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:59 pmSTS - SAN
1 stop6h 13mAmerican Airlines
Tue 1/136:15 amSAN - STS
1 stop6h 10mAmerican Airlines
Deal found 12/22$329
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.
Wed 12/317:00 amSTS - SAN
1 stop9h 24mAlaska Airlines
Thu 1/159:14 pmSAN - STS
Nonstop1h 57mAlaska Airlines
Deal found 12/22$340
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.
Wed 12/317:00 amSTS - SAN
2 stops9h 24mAlaska Airlines
Mon 1/129:14 pmSAN - STS
Nonstop1h 57mAlaska Airlines
Deal found 12/22$349
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 12/296:45 amSTS - SAN
Nonstop1h 52mAlaska Airlines
Tue 1/137:03 pmSAN - STS
2 stops17h 19mAlaska Airlines
Deal found 12/22$385
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 12/306:37 pmSTS - SAN
2 stops21h 47mAlaska Airlines
Thu 1/159:14 pmSAN - STS
Nonstop1h 57mAlaska Airlines
Deal found 12/22$389
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 12/296:45 amSTS - SAN
Nonstop1h 52mAlaska Airlines
Wed 1/147:03 pmSAN - STS
1 stop28h 56mAlaska Airlines
Deal found 12/22$396
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.
Wed 12/317:00 amSTS - SAN
1 stop9h 24mAlaska Airlines
Tue 1/137:03 pmSAN - STS
2 stops17h 19mAlaska Airlines
Deal found 12/22$399
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 12/296:45 amSTS - SAN
Nonstop1h 52mAlaska Airlines
Fri 1/166:15 amSAN - STS
1 stop17h 44mAlaska Airlines
Deal found 12/22$411

Find flight deals from Santa Rosa to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$128
(Kiwi.com)

One-way from

$69
(Alaska Airlines)

Popular in

May

Cheapest in

January

Average price

$284

Good round-trip deal

$209 or less

Good one-way deal

$142 or less
Provider with most accurate pricing for Santa Rosa Sonoma County-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-San Diego flights.
Search Deals
From Santa Rosa Sonoma County to San Diego
Search Deals
One-way flight from Santa Rosa Sonoma County to San Diego
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Santa Rosa Sonoma County to San Diego.
Search Deals
Price to beat on a one-way flight from Santa Rosa Sonoma County to San Diego.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa to San Diego 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 Santa Rosa to San Diego that are best for you.

Fly from

Santa Rosa

Fly to

San Diego

Route

Depart

Return

Price

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Tue 2/10

2:30 pm-4:12 pm

Nonstop1h 42m

San Diego

Thu 2/12

9:49 pm-11:51 pm

Nonstop2h 02m

$152

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Wed 2/11

2:30 pm-4:12 pm

Nonstop1h 42m

San Diego

Wed 2/18

5:00 pm-7:02 pm

Nonstop2h 02m

$152

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Wed 2/11

2:30 pm-4:12 pm

Nonstop1h 42m

San Diego

Sun 2/15

9:07 pm-11:09 pm

Nonstop2h 02m

$157

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Mon 2/9

6:52 pm-8:34 pm

Nonstop1h 42m

San Diego

Wed 2/11

5:21 pm-7:19 pm

Nonstop1h 58m

$157

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Sun 2/15

10:51 am-12:35 pm

Nonstop1h 44m

San Diego

Mon 2/16

9:07 pm-11:09 pm

Nonstop2h 02m

$157

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Fri 2/13

6:37 pm-8:24 pm

Nonstop1h 47m

San Diego

Mon 2/16

9:07 pm-11:09 pm

Nonstop2h 02m

$157

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Tue 2/10

2:30 pm-4:12 pm

Nonstop1h 42m

San Diego

Fri 2/13

9:49 pm-11:51 pm

Nonstop2h 02m

$172

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Sun 2/15

10:51 am-12:35 pm

Nonstop1h 44m

San Diego

Sun 2/15

9:07 pm-11:09 pm

Nonstop2h 02m

$177

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Sat 2/28

10:51 am-12:35 pm

Nonstop1h 44m

San Diego

Mon 3/2

8:59 pm-7:17 pm

1 stop22h 18m

$180

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Wed 2/18

10:51 am-12:35 pm

Nonstop1h 44m

San Diego

Mon 2/23

6:42 pm-7:17 pm

1 stop24h 35m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 20 results
1
2

Compare providers for flights from Santa Rosa to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Santa Rosa to San Diego in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Santa Rosa-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Santa Rosa-San Diego flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Santa Rosa-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Santa Rosa-San Diego flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Santa Rosa-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Santa Rosa to San Diego

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

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

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

Booking 77 days in advance of your planned departure date is, on average, the best time to get cheap flights from Santa Rosa to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Santa Rosa to San Diego (average of $28). Flying from Santa Rosa to San Diego in September is currently the most expensive (average of $64). 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 STS to SAN?

Find hourly flight availability from Santa Rosa to San Diego. 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 Santa Rosa to San Diego in the evening. By choosing this option you can save up to 8% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Santa Rosa to San Diego?

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

Travelers seeking maximum savings on their Santa Rosa to San Diego flight should consider departing on Tuesday evenings 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.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated December 23, 2025.
Read reviews from past customers who have flown Alaska Airlines, Hawaiian Airlines, and American Airlines from Santa Rosa to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,513 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

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
11,513 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

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
2,820 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

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
11,050 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

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
5.8
Fair
3,074 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.0

Overall

8.0

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 Santa Rosa to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Santa Rosa to San Diego?

    If you wish to fly to San Diego from Santa Rosa, then you need to book flights from Santa Rosa Sonoma County to San Diego. There are 6 flights from Sonoma County (STS) to San Diego (SAN) per day to choose from. Flights to San Diego from Sonoma County are available from 4 different airlines, which means you should have some options if you want to compare airfare deals. 1h 40m is how long a nonstop flight from Santa Rosa to San Diego typically takes.

  • How popular is this Santa Rosa to San Diego flight route?

    This flight path from Santa Rosa Sonoma County to San Diego was viewed by 6 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 Santa Rosa to San Diego?

    Departing from Santa Rosa to San Diego will take you 1h 42m. Airlines will cover a distance of 508 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Santa Rosa to San Diego round-trip?

    Frontier, at $19, was found to be the cheapest airline from Santa Rosa to San Diego.Alternate airlines to your destination round-trip include Alaska Airlines and Hawaiian Airlines. Frontier is priced at 93% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $83. Users have also found prices from $88 and $133 on Hawaiian Airlines and American Airlines, respectively.

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

    The top 3 most reliable airlines when flying from Santa Rosa to San Diego are SkyWest Airlines (79%), Alaska Airlines (71%) and Hawaiian Airlines (67%).

  • What are the cheapest flights from Santa Rosa to San Diego?

    The cheapest flight price from Santa Rosa to San Diego is $68. On average you can expect to pay $243. The most popular route, (Santa Rosa Sonoma County - San Diego), can usually be booked for $128.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Santa Rosa to San Diego 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 Santa Rosa to San Diego?

    Currently, January is the cheapest month in which you can book a flight from Santa Rosa to San Diego (average of $28). Flying from Santa Rosa to San Diego in September is currently the most expensive (average of $64). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Top 4 airlines flying from Santa Rosa to San Diego

Discover the top 4 airlines that operate flights from Santa Rosa to San Diego. 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$19Average$178FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$138Average$275FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$171Average$275FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$182Average$377FlexibilityNo cancel feeOn-time71%

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