$79 Cheap Flights from Santa Rosa (STS) to San Diego (SAN)

View $79 flight on Tue, Jun 3, 2025Opens in a new window

Popular airlines from Santa Rosa, CA (STS-Sonoma County) to San Diego Intl. Airport (SAN)

Find available prices by choosing your travel dates.

Cheap Flights from Santa Rosa to San Diego (STS-SAN)

Prices were available within the past 7 days and start at $79 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, May 20 - Wed, May 21
STS
Santa Rosa
SAN
San Diego
$157 Roundtrip, found 5 hours ago
$157
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Tue, May 20 from Santa Rosa to San Diego, returning Wed, May 21, priced at $157 found 5 hours ago
Alaska Airlines
Tue, May 20 - Wed, May 21
STS
Santa Rosa
SAN
San Diego
$167 Roundtrip, found 5 hours ago
$167
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Tue, May 20 from Santa Rosa to San Diego, returning Wed, May 21, priced at $167 found 5 hours ago
Hawaiian Airlines
Tue, May 27 - Wed, Jun 4
STS
Santa Rosa
SAN
San Diego
$167 Roundtrip, found 2 days ago
$167
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, May 27 from Santa Rosa to San Diego, returning Wed, Jun 4, priced at $167 found 2 days ago
American Airlines
Tue, May 20 - Tue, May 27
STS
Santa Rosa
SAN
San Diego
$169 Roundtrip, found 7 hours ago
$169
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, May 20 from Santa Rosa to San Diego, returning Tue, May 27, priced at $169 found 7 hours ago
Alaska Airlines
Sat, May 31 - Tue, Jun 3
STS
Santa Rosa
SAN
San Diego
$172 Roundtrip, found 3 hours ago
$172
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Sat, May 31 from Santa Rosa to San Diego, returning Tue, Jun 3, priced at $172 found 3 hours ago
Alaska Airlines
Thu, May 29 - Mon, Jun 2
STS
Santa Rosa
SAN
San Diego
$176 Roundtrip, found 2 hours ago
$176
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Thu, May 29 from Santa Rosa to San Diego, returning Mon, Jun 2, priced at $176 found 2 hours ago
American Airlines
Tue, May 20 - Tue, May 27
STS
Santa Rosa
SAN
San Diego
$177 Roundtrip, found 7 hours ago
$177
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, May 20 from Santa Rosa to San Diego, returning Tue, May 27, priced at $177 found 7 hours ago
American Airlines
Thu, May 29 - Mon, Jun 2
STS
Santa Rosa
CLD
Carlsbad
$177 Roundtrip, found 2 hours ago
$177
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Thu, May 29 from Santa Rosa to Carlsbad, returning Mon, Jun 2, priced at $177 found 2 hours ago
Alaska Airlines
Wed, May 14 - Wed, May 21
STS
Santa Rosa
SAN
San Diego
$177 Roundtrip, found 3 hours ago
$177
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed, May 14 from Santa Rosa to San Diego, returning Wed, May 21, priced at $177 found 3 hours ago
American Airlines
Thu, May 29 - Mon, Jun 2
STS
Santa Rosa
SAN
San Diego
$179 Roundtrip, found 2 hours ago
$179
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Thu, May 29 from Santa Rosa to San Diego, returning Mon, Jun 2, priced at $179 found 2 hours ago

Frequently asked questions

How much does a flight from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN) cost?
Pick up cheap return flights starting from $177 from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving STS on May 14 2025 and touching down at SAN. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from STS to SAN?
The cheapest flights from STS to SAN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN)?
When setting off from Sonoma County Airport (STS), you can get on a nonstop flight to San Diego Intl. Airport (SAN) with Alaska Airlines.
What is the cheapest airline that flies from STS to SAN?
Book a flight from STS to SAN with Alaska Airlines. This airline currently offers the lowest one-way fare for this route, starting at $89. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from STS on June 4 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN)?
On average, just 1 direct flight departs each day from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN). Looking for more options? Use our filter tool to discover flights with layovers and squeeze in a visit to another city along the way.
What are the most popular departure times for flights from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN)?
Flights between STS and SAN are busiest at 6 AM. For a more relaxed atmosphere and potentially cheaper tickets, choose a time outside the usual busy windows.
What day of the week has the most flights from STS to SAN?
If you travel on a Friday, you’ll get the biggest range of choices for flights from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN).
What is the earliest flight from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN)?
Catch the earliest flight at around 6:00AM UTC-8, leaving from Sonoma County Airport (STS). You’ll be traveling for around 1h 40m, coming in to land at San Diego Intl. Airport (SAN) at approximately 7:40AM UTC-8.
How long does it take to fly from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN)?
Flights from STS to SAN have an average travel time of 1 hour and 38 minutes. The distance between the two is 510 mi.
What is the best time to fly from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN)?
Book a flight from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for San Diego from Sonoma County Airport (STS)?
Browse your flight options from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN). This is the only San Diego airport you can fly into if you’re taking a direct flight.
Is it cheaper to buy a plane ticket from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN) last-minute?
Booking your ticket from STS to SAN just before your trip is generally more expensive. However, if there’s some wiggle room with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book a STS to SAN flight and hotel package?
Compared with arranging hotels and flights separately, booking a STS to SAN flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place will take the stress out of travel planning. Just pick your flights and select from our wide range of hotels, then personalize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Sonoma County Airport (STS) to San Diego Intl. Airport (SAN)?
If you reserved your STS to SAN flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you’d like more information.
*Available to One Key members.