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$50 Cheap Flights from San Diego (SAN) to Santa Rosa (STS)

View $50 flight on Fri, Sep 11, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $50 for one-way flights and $109 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Fri, Sep 11 - Mon, Sep 14
SAN
San Diego
STS
Santa Rosa
$109 Roundtrip, found 8 hours ago
$109
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Fri, Sep 11 from San Diego to Santa Rosa, returning Mon, Sep 14, priced at $109 found 8 hours ago
Southwest Airlines
Fri, Sep 11 - Mon, Sep 14
SAN
San Diego
STS
Santa Rosa
$110 Roundtrip, found 8 hours ago
$110
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Fri, Sep 11 from San Diego to Santa Rosa, returning Mon, Sep 14, priced at $110 found 8 hours ago
Southwest Airlines
Thu, Sep 3 - Sat, Sep 5
SAN
San Diego
STS
Santa Rosa
$119 Roundtrip, found 8 hours ago
$119
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Thu, Sep 3 from San Diego to Santa Rosa, returning Sat, Sep 5, priced at $119 found 8 hours ago
Alaska Airlines
Thu, Sep 3 - Sat, Sep 5
SAN
San Diego
STS
Santa Rosa
$124 Roundtrip, found 8 hours ago
$124
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Thu, Sep 3 from San Diego to Santa Rosa, returning Sat, Sep 5, priced at $124 found 8 hours ago
Southwest Airlines
Thu, Sep 3 - Sat, Sep 5
SAN
San Diego
STS
Santa Rosa
$125 Roundtrip, found 8 hours ago
$125
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Thu, Sep 3 from San Diego to Santa Rosa, returning Sat, Sep 5, priced at $125 found 8 hours ago
Southwest Airlines
Mon, Nov 23 - Thu, Nov 26
SAN
San Diego
STS
Santa Rosa
$127 Roundtrip, found 5 hours ago
$127
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Mon, Nov 23 from San Diego to Santa Rosa, returning Thu, Nov 26, priced at $127 found 5 hours ago
Southwest Airlines
Thu, Sep 17 - Mon, Sep 21
SAN
San Diego
STS
Santa Rosa
$128 Roundtrip, found 4 hours ago
$128
Roundtrip
found 4 hours ago
Select Southwest Airlines flight, departing Thu, Sep 17 from San Diego to Santa Rosa, returning Mon, Sep 21, priced at $128 found 4 hours ago
Alaska Airlines
Fri, Sep 4 - Sat, Sep 5
SAN
San Diego
STS
Santa Rosa
$133 Roundtrip, found 12 hours ago
$133
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Sep 4 from San Diego to Santa Rosa, returning Sat, Sep 5, priced at $133 found 12 hours ago
American Airlines
Tue, Sep 1 - Wed, Sep 9
SAN
San Diego
STS
Santa Rosa
$159 Roundtrip, found 2 days ago
$159
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Sep 1 from San Diego to Santa Rosa, returning Wed, Sep 9, priced at $159 found 2 days ago
Delta
Tue, Nov 10 - Fri, Nov 13
SAN
San Diego
STS
Santa Rosa
$177 Roundtrip, found 7 hours ago
$177
Roundtrip
found 7 hours ago
Select Delta flight, departing Tue, Nov 10 from San Diego to Santa Rosa, returning Fri, Nov 13, priced at $177 found 7 hours ago

Alternative airports near Santa Rosa

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sonoma County STS. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $117
STS
Sonoma County
CheapestClosest
Average driving time to city center10 min
Flights from $117

Find the cheapest month to fly from San Diego (SAN) to Santa Rosa (STS)

September is typically the cheapest month to fly

From $97 - $179 per traveler.

What you need to know for your flight from San Diego Intl. to Sonoma County

San Diego (SAN) to Santa Rosa (STS) at a glance

Travel between San Diego (SAN) and Santa Rosa (STS) with various airlines on this domestic short-haul route. Discover options for flights from San Diego, including both full-service and low-cost carriers, to find a suitable itinerary that meets your budget and schedule. As you plan your visit to explore Santa Rosa's renowned attractions and neighborhoods, be sure to check for cheap flights from San Diego that suit your travel needs.

  • Fastest flight duration: around 2 hours non-stop
  • Route distance: roughly 500 miles (800 km)
  • Flights per week: around 13 departures on average
  • Typical fares (one-way): economy tickets often range from $70–$320, depending on seasonality and how far ahead you book

Flights from San Diego International Airport (SAN) to Sonoma County Airport (STS)

Recent traveler bookings reveal the most popular airlines for flights from San Diego to Santa Rosa, focusing on non-stop and one-stop options. Many travelers prefer layovers at Sky Harbor International Airport (PHX) with a typical 2-hour 15-minute stop, or at Harry Reid International Airport (LAS) with a shorter 55-minute layover. This allows you to balance price, travel time, and cabin class to create the ideal itinerary for your journey.

  • Alaska Airlines: This full-service airline provides both non-stop and one-stop options, with one-way fares generally falling between $80 and $330. It handles about 78% of departures on this route, with a standard non-stop flight duration of 2 hours.
  • American Airlines: As a full-service carrier, American Airlines offers non-stop and one-stop flights, with one-way fares typically ranging from $100 to $420. It represents around 15% of departures on this route, with non-stop journeys taking approximately 2 hours.
  • Southwest Airlines: A budget-friendly choice, Southwest Airlines provides non-stop services, with one-way fares usually between $70 and $245. It accounts for roughly 4% of departures on this route, with a total travel time of 2 hours.
  • Hawaiian Airlines: This full-service airline features non-stop flights, with one-way fares typically ranging from $100 to $305. It makes up about 2% of departures on this route, and the total journey duration is around 2 hours.

Travelers flying from San Diego to Santa Rosa can elevate their journey with an upgraded flight. Alaska Airlines offers first class and business class options, while American Airlines features its own first-class service.

Best time to fly from San Diego (SAN) to Santa Rosa (STS)

The most popular months for travelers flying from San Diego to Santa Rosa are January, March, and April, when peak temperatures in Santa Rosa reach up to 55.6°F in April. If you prefer quieter travel, consider July, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 69.8°F. For better deals, April usually offers the lowest average one-way fare around $157. Flight availability peaks in April, October, and November, with approximately 15 flights per week, making it easier to find convenient departure times. January and February have the fewest flights, with approximately 11 flights per week.

  • Cheapest time to fly: April usually offers good deals with average one-way fare around $157, roughly 20% cheaper than the yearly average.
  • Another budget-friendly time to fly: January typically offers an average one-way fare of around $179.
  • Most flight options: April, October, and November have the highest number of flights from San Diego to Santa Rosa, with approximately 15 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January48.2°F (9.0°C)High11$179
February49.1°F (9.5°C)Average11$223
March51.1°F (10.6°C)High14$203
April55.6°F (13.1°C)High15$157
May60.6°F (15.9°C)Low13$208
June67.3°F (19.6°C)Average12$199
July69.8°F (21.0°C)Low12$191
August69.4°F (20.8°C)Average12$203
September68.0°F (20.0°C)Low13$193
October62.1°F (16.7°C)Average15$193
November53.1°F (11.7°C)Average15$228
December47.3°F (8.5°C)Average13$186

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from San Diego (SAN) to Santa Rosa (STS)

  • San Diego to Santa Rosa (MYF-STS): Montgomery Field Airport (MYF) is located approximately 6 miles from San Diego International Airport (SAN).
  • Carlsbad to Santa Rosa (CLD-STS): McClellan-Palomar Airport (CLD) lies around 28 miles from San Diego International Airport (SAN).
  • San Diego to Novato (SAN-NOT): Gnoss Field Airport (NOT) is roughly 29 miles distant from Sonoma County Airport (STS).

How to find the best prices for flights from San Diego (SAN) to Santa Rosa (STS)

Getting some of the best deals on flights from San Diego to Santa Rosa is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which is also when most travelers make their reservations. Evening departures from 6 PM to 12 AM tend to be less expensive, while morning flights from 5 AM to 12 PM are the most popular. Additionally, flying on Thursday offers both lower prices and high demand.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Santa Rosa hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Sonoma County Airport from San Diego International Airport

Santa Rosa welcomes travelers from San Diego with a range of transport options based on price, convenience, and proximity. Santa Rosa city center is approximately a 10-minute drive (covering about 9 miles) from Sonoma County Airport, depending on traffic. Here's how to reach Santa Rosa efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Santa Rosa, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from Sonoma County Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Sonoma County Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Sonoma County Airport, Santa Rosa Station, a train station, is approximately 7.6 miles away and is best reached by car, providing convenient access for travelers.

Frequently asked questions

How much does a flight from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) cost?
You can find cheap one-way flights from $50 and cheap return flights from $109 San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) with Expedia. One-way flights usually range from $120 to $820, and return flights typically cost between $224 and $1005. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
January is the cheapest month to fly from San Diego, CA (SAN) to Santa Rosa, CA (STS), with average round-trip fares around $222. This price is about 20% lower than the average throughout the year, as travel demand typically decreases after the holiday season. Other economical months to consider are April and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Hawaiian Airlines offers around 16 weekly direct flights from SAN to STS.
What is the cheapest airline that flies from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Southwest Airlines is one of the cheapest airlines offering nonstop flights from San Diego Intl. (SAN) to Sonoma County (STS), with round-trip tickets starting from around $346. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
To find a cheap flight from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The best airline to fly with from San Diego, CA (SAN) to Santa Rosa, CA (STS) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. United offers the most daily flights from SAN to STS, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The best time to fly from San Diego (SAN) to Santa Rosa (STS) is in January or September. You can find return flights for about $222 in January, which is a great deal. These months are ideal as they typically have fewer crowds, allowing for a more relaxed travel experience.*Prices based on flights available on Expedia in the last year.
How many flights per day from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
You can find approximately 1 nonstop flights per day from San Diego Intl. (SAN) to Sonoma County (STS). For more options, look at flights that include layovers.
What is the earliest flight from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The earliest flight from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) departs at 6:00 AM, operated by American Airlines. This seasonal service is available in March and April, and an early departure can help you enjoy the beautiful wine country. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The most popular departure times for flights from San Diego (SAN-San Diego Intl.) to Santa Rosa (STS-Sonoma County) are in the early morning, from 6am to 9am. About 30% of passengers prefer this time window. Many major carriers, including Alaska Airlines and American Airlines, offer flights during this window. This timing is great for travelers looking to start their day early and enjoy Santa Rosa.
How long does it take to fly from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Direct flights from SAN to STS usually take about 1 hour 50 minutes, traveling roughly 508 miles. If you opt for a connecting flight, expect to add around 4 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
First class seats are offered on the SAN to STS route with American Airlines.
How much is a business class flight from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
A direct, return business class ticket from San Diego (SAN) to Santa Rosa (STS) typically costs between $392 - $650. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) flight with Expedia?
It's easy to earn miles on a San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Santa Rosa from San Diego Intl. (SAN)?
From San Diego Intl. (SAN), you can fly into Sonoma County (STS) to reach Santa Rosa. Some flights may connect through major hubs like San Francisco Intl. (SFO), Salt Lake City Intl. (SLC), Harry Reid Intl. (LAS) before reaching Santa Rosa. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) at the last minute?
Typically, booking a last minute flight from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) flight and hotel package?
Securing a San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County)?
If you booked your San Diego, CA (SAN-San Diego Intl.) to Santa Rosa, CA (STS-Sonoma County) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket 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.

Travel information

Origin airport
San Diego Intl.
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines
Roundtrip price
$109
Distance
508 mi
Average flight time
2 hours 3 mins

Book with confidence

San Diego to Santa Rosa Flights

The cheapest times to fly from San Diego to Santa Rosa

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Diego to Santa Rosa are during the month of September. You can find some of the cheapest flights from San Diego to Santa Rosa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Diego to Santa Rosa

Sunday is one of the best days to book for cheap flights from San Diego to Santa Rosa: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Diego to Santa Rosa

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Diego to Santa Rosa in 2026. You can also book with separate airlines for your outbound and return journeys, from $50 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Diego to Santa Rosa flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Diego to Santa Rosa airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Diego to Santa Rosa Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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