STS to SAN, Charles M. Schulz–Sonoma County Airport to San Diego International Airport Cheap Flights

Based on HopeGoo data, Hawaiian Airlines offers one-way fares as low as US$50 on Cheapest nonstop routes (e.g. STS to SAN on Wed, Mar 25), while Hawaiian Airlines offers Cheapest nonstop round-trips from US$99 departing on Wed, Mar 18 and returning on Wed, Mar 25.

It takes about 1 hour 40 minutes to fly from Santa Rosa to San Diego.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Santa Rosa to San Diego is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

To find best deals on flights from Santa Rosa to San Diego, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Mar 25, with one-way flights priced at just US$50. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hawaiian Airlines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for San Diego travel is around July. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Santa Rosa to San Diego is November, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Santa Rosa to San Diego on February 28, 2026 with American Airlines, with prices starting at US$578.

The time difference between San Diego and Santa Rosa is 0h.

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