Southwest Airlines to Begin Service at Charles M. Schulz–Sonoma County Airport in April 2026
Southwest Airlines will begin service at Charles M. Schulz–Sonoma County Airport on April 7, 2026, offering nonstop flights to San Diego, Las Vegas, Denver and Burbank; tickets go on sale Sept. 11, 2025, expanding options for Sonoma County travelers.
- Service launch: Southwest begins operations at STS on April 7, 2026 (Sonoma County press release).
- Routes and frequency: Nonstop to San Diego and Las Vegas daily (extra San Diego roundtrips on peak days), Burbank five days/week, Denver Saturdays only (KTVU).
- Tickets: Available beginning Sept. 11, 2025 via booking channels and Southwest’s published schedules (Patch).
Main story
What’s new
On April 7, 2026, Southwest Airlines will commence scheduled service at Charles M. Schulz–Sonoma County Airport (STS). The county framed the announcement as a major expansion for North Bay connectivity and a response to repeated public requests for Southwest service (Sonoma County press release).
Details on routes and schedule
Southwest’s STS schedule targets both leisure and business travelers. Key elements:
- San Diego: Daily service, with two roundtrips on peak days.
- Las Vegas: Daily service.
- Burbank: Five days per week.
- Denver: Saturdays only.
These frequencies were disclosed by Sonoma County and reported by local outlets (Sonoma County press release; KTVU).
Ticketing and travel planning
Tickets for these new routes will be available beginning Sept. 11, 2025. Travelers should expect to buy fares via Southwest’s booking channels once the carrier posts schedules and fares in advance of the sale date. The county and local reporters advise planning early for spring and summer 2026 trips (KTVU; Patch).
Local reaction and airport context
Airport and county officials praised Southwest’s arrival as a long-sought enhancement to regional air service. Officials emphasized the potential to funnel more visitors into Sonoma and nearby Napa Valley via Southwest’s national network (Sonoma County press release).
“Southwest was one of the most-requested carriers by area travelers,” county leaders said, noting improved connectivity for residents and businesses.
The announcement follows Avelo Airlines ending service at STS in August 2025. With Southwest joining, the airport’s carrier lineup will include Alaska Airlines, American Airlines and Southwest, restoring some diversity lost earlier in the year (Sonoma County press release; Patch).
Why this matters to travelers
For many Sonoma County residents, Southwest’s nonstop options reduce the need to drive to larger Bay Area airports. The new flights connect to major leisure hubs and to Burbank—a regional business and transfer airport—while a Saturday-only Denver flight adds access for ski travelers and western connections.
Local businesses—hotels, tour operators and tasting rooms—are likely to benefit from simpler access for out-of-region visitors, especially in peak travel seasons (Travel and Tour World).
Broader airline context and risks
Southwest’s expansion into Sonoma County comes amid a companywide restructuring aimed at making operations “leaner, faster and more agile.” Local leaders view the move as a sign of long-term confidence, but industry watchers caution that airline network plans can change under financial or operational pressure (KTVU).
Practical questions remain: will announced frequencies hold if demand is weak? Could systemwide changes affect aircraft allocation? County officials say they are coordinating with Southwest to support stable operations.
Operational and infrastructure notes
STS currently handles domestic nonstop flights and, per county officials, has capacity to accommodate additional Southwest frequencies. The airport has been focusing on passenger services and ground access improvements to serve more visitors (Sonoma County airport page).
Implications for Sonoma County
Economic: More nonstop flights typically increase visitor numbers and tourist spending—benefiting wine tours, hotels, restaurants and retailers, especially in spring and summer.
Political: Officials may use the new carrier as a case for further investment in airport facilities, road and transit access to manage potential congestion.
Social and cultural: Easier travel can strengthen ties and broaden visitor demographics, but may prompt conversations about managing tourism to preserve community character and sustainability.
Practical applications for residents
- Plan and compare fares when tickets go on sale Sept. 11, 2025.
- Watch for schedule postings and baggage/ground-transport details from the county and Southwest.
- Local businesses should coordinate promotions and transport options to serve arriving passengers.
Sources and further reading
Reporting in this story draws on the following documents and coverage:
