Last Updated on July 27, 2026 by Daniel Globe
Charles M. Schulz – Sonoma County Airport (STS) sits in the heart of California’s wine country, giving travelers a quieter, less crowded gateway to Sonoma County than the major San Francisco Bay Area hubs. Named after Peanuts creator Charles M. Schulz, the airport opened in June 1942 as Santa Rosa Army Airfield and has grown steadily while keeping the relaxed, small-airport atmosphere that visitors value. Located just a few miles north of downtown Santa Rosa, STS places legendary wineries, coastal drives, and majestic redwood groves within effortless reach right off the plane.
Quick Answer
Sonoma County Airport (STS) is served by major carriers including Alaska Airlines, American Airlines, United Airlines, Southwest Airlines, and Delta Air Lines. Direct routes link STS to Western travel hubs like Los Angeles, San Diego, Seattle, Portland, Phoenix, Denver, Las Vegas, Dallas, and Salt Lake City, offering short security lines and hassle-free terminal navigation.
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Key Takeaways
Key Takeaways
- STS provides a stress-free alternative to larger San Francisco (SFO) and Oakland (OAK) airports for wine country travel.
- Current operating carriers include Alaska Airlines, American Airlines, United Airlines, Southwest Airlines, and Delta Air Lines.
- Nonstop routes connect to Los Angeles, Orange County, San Diego, Burbank, Palm Springs, Portland, Seattle, Dallas, Phoenix, Las Vegas, Denver, Salt Lake City, and Boise (seasonal).
- Features signature perks like Alaska Airlines’ “Wine Flies Free” program, local dining, free Wi-Fi, and adjacent rental car services.
- Convenient ground transit links include the nearby Sonoma-Marin Area Rail Transit (SMART) train station.
Major Airlines Serving Sonoma County Airport
Sonoma County Airport’s carrier lineup expanded significantly in 2026. Alaska Airlines remains a anchor operator, offering frequent daily nonstops to destinations like Los Angeles, San Diego, Portland, and Seattle, alongside seasonal nonstop flights to Boise, Phoenix, and Salt Lake City using 76-seat Embraer 175 aircraft. American Airlines links STS to major hubs in Phoenix, Dallas/Fort Worth, and Los Angeles, while United Airlines connects passengers through Denver and San Francisco.
Southwest Airlines officially launched service at STS on April 7, 2026, introducing direct routes to Burbank, San Diego, Las Vegas, and Denver, unlocking network access to over 100 destinations. Delta Air Lines expanded the airport’s lineup further by launching daily nonstop service to Salt Lake City on October 6, 2026—marking STS’s fourth major network carrier arrival. Avelo Airlines, which previously served Burbank and Las Vegas, concluded its operations at STS in 2025.
Note: Flight schedules and seasonal routes vary by month. Always verify active timetables directly with Sonoma County Airport or your airline prior to booking.
Direct Flights and Destinations
One of the primary benefits of flying through STS is its growing selection of direct routes. Nonstop destinations now span Los Angeles (LAX), Orange County (SNA), San Diego (SAN), Burbank (BUR), Palm Springs (PSP), Portland (PDX), Seattle (SEA), Dallas/Fort Worth (DFW), Phoenix (PHX), Las Vegas (LAS), Denver (DEN), and Salt Lake City (SLC). Alaska Airlines’ seasonal Boise (BOI) route adds convenient connectivity to the Pacific Northwest.
Southern California flights accommodate both business executives and vacationers heading to coastal destinations. Pacific Northwest routes to Seattle and Portland see heavy demand during summer, while desert hubs like Phoenix, Las Vegas, and Salt Lake City give local travelers straightforward connections to mountain and outdoor destinations. With Delta’s Salt Lake City route and Southwest’s schedule, STS’s route network is broader than ever.
Pro Tip — Wine Flies Free: Travelers departing on Alaska Airlines from STS can check one protective case of wine (up to 12 bottles) for free under the airline’s official Wine Flies Free program—a major advantage when stocking up at local Sonoma wineries.
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Amenities and Services at Sonoma County Airport
| Category | Details |
|---|---|
| Food & Beverage | Local dining choices including Flying Ace, Crush Wine Lounge, and Apple Spice Cafe |
| Shopping | Gift shops featuring travel supplies, local artisan gifts, and Sonoma wines |
| Wi-Fi & Tech | Free high-speed Wi-Fi throughout the terminal and charging stations near gates |
| Parking | Short-term and long-term parking lots with grace periods and EV charging stations |
| Car Rental | On-site rental counters steps away from baggage claim (Alamo, Avis, Budget, Enterprise, Hertz, National) |
| Ground Transportation | Rideshares (Uber/Lyft), taxis, airport shuttles, and nearby SMART train station connection |
Despite its compact footprint, STS delivers essential modern airport conveniences. Free terminal-wide Wi-Fi keeps passengers connected, while dining options showcase regional flavors with locally sourced menus and wine pairings. Retail counters carry travel necessities alongside local souvenirs. Terminal facilities are fully ADA-compliant for travelers needing accessibility assistance.
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Tips for Traveling through Sonoma County Airport
Navigating STS is straightforward, but arriving prepared ensures an easy airport experience. Plan to arrive at least 60 to 90 minutes before domestic departures. Although TSA queues move faster here than at major hubs, morning peak flight times and holiday travel weekends can generate lines.
For ground transportation, the Sonoma County Airport SMART Train station is located roughly one mile from the terminal, linking air passengers directly south through Santa Rosa, Petaluma, and San Rafael down to the Larkspur Ferry terminal.
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Future Expansion and Development Plans
Expanding Terminal Facilities
STS continues upgrading gate, seating, and concessions capacity to keep up with route expansion. Adding boarding space allows airlines like Southwest, Delta, and Alaska to operate larger aircraft schedules during busy morning and evening banks.
Upgrading Infrastructure
Alongside terminal upgrades, ongoing capital improvement projects focus on modernizing baggage handling systems, expanding TSA screening lanes, and improving passenger flow from ticketing to boarding gates.
Community Engagement and Environmental Considerations
Sonoma County officials collaborate with regional neighbors to ensure airport improvements balance passenger growth with noise abatement, local traffic considerations, and environmental standards.
Environmental Initiatives at Sonoma County Airport
Sustainability plays a central role in airport development. STS utilizes on-site solar energy installations, drought-tolerant landscaping, and water-reclamation systems for irrigation. The airport also coordinates with ground services and tenant carriers to evaluate Sustainable Aviation Fuel (SAF) infrastructure and offers electric vehicle charging stations across its parking facilities.
Conclusion and Recommendations for Travelers
For visitors traveling to Northern California’s wine country, Sonoma County Airport offers an efficient, calm alternative to crowded metropolitan airports. With major service from Alaska, American, United, Southwest, and Delta, passengers can fly direct from key cities nationwide. Combining accessible parking, local food options, and efficient security, STS provides a smooth, low-stress entry point to Santa Rosa and the broader Sonoma region.
Frequently Asked Questions
What airlines fly to Sonoma County Airport (STS)?
As of 2026, STS is served by Alaska Airlines, American Airlines, United Airlines, Southwest Airlines, and Delta Air Lines.
Which cities have direct flights from STS?
Nonstop destinations include Los Angeles, Orange County, San Diego, Burbank, Palm Springs, Portland, Seattle, Dallas, Phoenix, Las Vegas, Denver, and Salt Lake City, alongside seasonal Alaska Airlines service to Boise.
Are there international flights from Sonoma County Airport?
No. All scheduled flights operating out of STS are domestic within the United States. Passengers can connect to international destinations via major hubs like Denver, Dallas, Salt Lake City, Phoenix, or Seattle.
Can I book STS flights directly through the airlines?
Yes. Flights can be booked directly through Alaska Airlines, American Airlines, United Airlines, Southwest Airlines, or Delta Air Lines.
Is there a budget airline option at STS?
Southwest Airlines launched operations at STS in April 2026, offering competitive fares and standard baggage allowances to several Western destinations.
Sources
- Charles M. Schulz – Sonoma County Airport Official Site — Official terminal maps, airline schedules, and parking information.
- Sonoma County Government Announcement — Official release details for Southwest Airlines’ 2026 launch.
- The Press Democrat — Reporting on Delta Air Lines’ Salt Lake City route expansion.
- Sonoma County Press Release — Route details for Alaska Airlines nonstops to Boise, Phoenix, and Salt Lake City.
- Wikipedia: Charles M. Schulz–Sonoma County Airport — Historical reference and operational background.
