STS
Charles M. Schulz Sonoma County Airport

Charles M. Schulz Sonoma County Airport (IATA: STS, ICAO: KSTS) is a medium airport in Santa Rosa, California, United States. It opened in Jun 1942. It has 2 runways; the longest is 6,000 ft (1,829 m). It is operated by County of Sonoma. In 2025 it handled 773 thousand passengers.
Timeline
1 event · 1942–1942JUN 1942
OpenedCharles M. Schulz Sonoma County Airport opens.
From Wikidata and WikipediaEvery airfield, 1903–2026
Runways & airfield
Schematic · N · © OpenStreetMap · FAA diagram PDF14/32157° / 337° · LIT
LENGTH6,000 ft1,829 mWIDTH150 ft46 mSURFACEAsphalt
02/20029° / 209° · LIT
LENGTH5,202 ft1,586 mWIDTH100 ft31 mSURFACEAsphalt
Passengers per year
2014–2025238K
272K
339K
401K
433K
477K
193K
430K
607K
635K
765K
773K
141516171819202122232425
Routes
14 destinations · 1 countryYear-round10
BURHollywood Burbank/Bob Hope AirportUnited States · Southwest Airlines, Alaska Airlines623 km387 miLAXLos Angeles International AirportUnited States · Alaska Airlines643 km400 miONTOntario International AirportUnited States · Alaska Airlines681 km423 miSNAJohn Wayne Orange County International AirportUnited States · Alaska Airlines697 km433 miLASHarry Reid International AirportUnited States · Southwest Airlines, Alaska Airlines729 km453 miPDXPortland International AirportUnited States · Alaska Airlines787 km489 miSANSan Diego International AirportUnited States · Southwest Airlines, Alaska Airlines819 km509 miSLCSalt Lake City International AirportUnited States · Delta Connection961 km597 miSEASeattle–Tacoma International AirportUnited States · Alaska Airlines995 km618 miDENDenver International AirportUnited States · Southwest Airlines1,568 km974 miSeasonal4
PSPPalm Springs International AirportUnited States · Alaska Airlines768 km477 miBOIBoise Air Terminal/Gowen FieldUnited States · Alaska Airlines788 km490 miPHXPhoenix Sky Harbor International AirportUnited States · Alaska Airlines1,123 km698 miAUSAustin Bergstrom International AirportUnited States · Southwest Airlines2,477 km1,539 miMost destinationsAlaska Airlines 11Southwest Airlines 5Delta Connection 1
Straight lines are great circles; rings mark true distance from STS. Dashed: seasonal or charter. From the Wikipedia article “Charles M. Schulz–Sonoma County Airport” (revision of 22 Sep 2026), CC BY-SA 4.0.
Records & rankings
Ranked among 48,011 open airports · world · region · countryScale: share of airports ranked below, best on the right · ties shown as = and a band · passengers are each airport’s latest year on record
Radio frequencies
6 channelsA/DNORCAL APP/DEP127.800
ATISATIS120.550
CTAFCTAF118.500
GNDGND121.900
TWRSANTA ROSA TWR118.500
UNICUNICOM122.950