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$80+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SAN
Aug 15 — Aug 221
Fri 8/15
Fri 8/22
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

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 August 10, 2025.

Round-trip from

$157
(Alaska Airlines)

One-way from

$80
(American Airlines)

Popular in

May

Cheapest in

January

Average price

$292

Good round-trip deal

$209 or less

Good one-way deal

$139 or less
From Santa Rosa Sonoma County to San Diego
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One-way flight from Santa Rosa Sonoma County to San Diego
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Highest demand for flights based on searches. 10% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Santa Rosa Sonoma County to San Diego.
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Price to beat on a one-way flight from Santa Rosa Sonoma County to San Diego.
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Find 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 August 10, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/8. 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.
Sun 8/316:00 amSTS - SAN
Nonstop1h 47mAlaska Airlines
Mon 9/89:59 pmSAN - STS
Nonstop1h 51mAlaska Airlines
Deal found 8/8$157
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Wed 9/31:00 pmSTS - SAN
1 stop6h 24mAmerican Airlines
Mon 9/86:20 amSAN - STS
1 stop6h 09mAmerican Airlines
Deal found 8/10$159
This Alaska Airlines deal was found by Cheapflights users on 8/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:49 amSTS - SAN
Nonstop1h 51mAlaska Airlines
Tue 11/182:47 pmSAN - STS
1 stop4h 08mAlaska Airlines
Deal found 8/9$167
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Thu 10/166:25 amSTS - SAN
Nonstop1h 50mHawaiian Airlines
Sat 10/259:16 pmSAN - STS
Nonstop2h 00mHawaiian Airlines
Deal found 8/9$174
This American Airlines deal was found by Cheapflights users on 8/9. 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.
Thu 8/284:17 pmSTS - SAN
1 stop5h 38mAmerican Airlines
Tue 9/29:45 amSAN - STS
1 stop6h 02mAmerican Airlines
Deal found 8/9$175
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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.
Sun 8/316:00 amSTS - SAN
Nonstop1h 47mAlaska Airlines
Tue 9/97:48 amSAN - STS
Nonstop1h 55mAlaska Airlines
Deal found 8/8$177
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 10/157:42 pmSTS - SAN
Nonstop1h 53mHawaiian Airlines
Thu 10/239:16 pmSAN - STS
Nonstop2h 00mHawaiian Airlines
Deal found 8/9$179
This Alaska Airlines deal was found by Cheapflights users on 8/10. 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 9/53:23 pmSTS - SAN
Nonstop1h 43mAlaska Airlines
Mon 9/89:59 pmSAN - STS
Nonstop1h 51mAlaska Airlines
Deal found 8/10$182
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Tue 9/161:00 pmSTS - SAN
1 stop6h 24mAmerican Airlines
Mon 9/229:45 amSAN - STS
1 stop6h 03mAmerican Airlines
Deal found 8/10$183
This American Airlines deal was found by Cheapflights users on 8/10. 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 8/3012:59 pmSTS - SAN
1 stop6h 39mAmerican Airlines
Sat 9/66:20 amSAN - STS
1 stop6h 09mAmerican Airlines
Deal found 8/10$189
This Hawaiian Airlines deal was found by Cheapflights users on 8/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/37:52 pmSTS - SAN
Nonstop1h 46mHawaiian Airlines
Wed 9/108:05 amSAN - STS
1 stop6h 38mHawaiian Airlines
Deal found 8/10$190
This American Airlines deal was found by Cheapflights users on 8/10. 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 8/3112:59 pmSTS - SAN
1 stop6h 39mAmerican Airlines
Fri 9/56:20 amSAN - STS
1 stop6h 09mAmerican Airlines
Deal found 8/10$191

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 August 10, 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

Sun 8/31

6:00 am-7:47 am

Nonstop1h 47m

San Diego

Mon 9/8

9:59 pm-11:50 pm

Nonstop1h 51m

$157

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Wed 9/3

1:00 pm-7:24 pm

1 stop6h 24m

San Diego

Mon 9/8

6:20 am-12:29 pm

1 stop6h 09m

$159

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Mon 11/17

6:49 am-8:40 am

Nonstop1h 51m

San Diego

Tue 11/18

2:47 pm-6:55 pm

1 stop4h 08m

$167

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Thu 10/16

6:25 am-8:15 am

Nonstop1h 50m

San Diego

Fri 10/24

9:16 pm-11:16 pm

Nonstop2h 00m

$174

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Thu 8/28

4:17 pm-9:55 pm

1 stop5h 38m

San Diego

Tue 9/2

9:45 am-3:47 pm

1 stop6h 02m

$175

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Sun 8/31

6:00 am-7:47 am

Nonstop1h 47m

San Diego

Sat 9/6

7:48 am-9:43 am

Nonstop1h 55m

$177

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Wed 10/15

7:42 pm-9:35 pm

Nonstop1h 53m

San Diego

Thu 10/23

9:16 pm-11:16 pm

Nonstop2h 00m

$179

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Fri 9/5

3:23 pm-5:06 pm

Nonstop1h 43m

San Diego

Mon 9/8

9:59 pm-11:50 pm

Nonstop1h 51m

$182

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Tue 9/16

1:00 pm-7:24 pm

1 stop6h 24m

San Diego

Mon 9/22

9:45 am-3:48 pm

1 stop6h 03m

$183

Santa RosaSan Diego

STS - SAN

STSSAN

Santa Rosa Sonoma County

Sat 8/30

12:59 pm-7:38 pm

1 stop6h 39m

San Diego

Sat 9/6

6:20 am-12:29 pm

1 stop6h 09m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/10

Showing 1-10 of 23 results
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2
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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 August 8, 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, August is the cheapest month in which you can book a flight from Santa Rosa to San Diego (average of $286). Flying from Santa Rosa to San Diego in March is currently the most expensive (average of $366). 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 August 10, 2025.

It’s optimal to fly from Santa Rosa to San Diego in the afternoon. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight at noon.

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 August 3, 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. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Santa Rosa to San Diego

Explore weekly flight availability from Santa Rosa to San Diego. 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 August 10, 2025.

The most flights from STS to SAN are scheduled on a Monday (6 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

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 August 10, 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
10,000 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,640 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 5 flights from Sonoma County (STS) to San Diego (SAN) per day to choose from. Flights to San Diego from Sonoma County are available from 3 different airlines, which means you should have some options if you want to compare airfare deals. 1h 32m 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 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Alaska Airlines, at $157, was found to be the cheapest airline from Santa Rosa to San Diego. An alternate airline flying to your destination would be American Airlines. Alaska Airlines is priced at 43% lower than the current average price of a flight leaving 3 months from now.

  • 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 (82%), Alaska Airlines (82%) and American Airlines (79%).

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

    The cheapest flight price from Santa Rosa to San Diego is $108. On average you can expect to pay $232. The most popular route, (Santa Rosa Sonoma County - San Diego), can usually be booked for $137.

  • 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, August is the cheapest month in which you can book a flight from Santa Rosa to San Diego (average of $286). Flying from Santa Rosa to San Diego in March is currently the most expensive (average of $366). 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
Chula Vista
El Cajon
Coronado
Poway
National City
Lemon Grove
Imperial Beach
La Mesa
Alpine

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Top 3 airlines flying from Santa Rosa to San Diego

Discover the top 3 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 August 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$145Average$276FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$177Average$281FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$216Average$468FlexibilityNo cancel feeOn-time71%

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