S
- Sacramento Executive Airport
- Sacramento Mather Airport
- Sacramento Metro
- Safford
- Saginaw
- Saint George Automatic Weather Observing / Reporting System
- Saint Johns
- Saint Johnsbury
- Saint Mary's
- Saint Paul Island
- Salem, McNary Field
- Salina
- Salinas
- Salisbury
- Sallisaw, Sallisaw Municipal Airport
- Salmon
- Salt Lake City Intl Airport
- San Angelo
- San Antonio Intl Airport
- San Carlos
- San Clemente
- Sandberg
- San Diego
- San Diego/Brown
- San Diego Intl Lindberg Field
- San Diego, Mongomery Field
- Sand Point
- Sanford
- Sanford
- Sanford, Sanford-Lee County Regional Airport
- San Francisco Intl Airport
- San Jose
- San Luis Obispo
- San Nicolas Island
- Santa Ana
- Santa Barbara Municipal Airport
- Santa Fe
- Santa Maria
- Santa Monica
- Santa Rosa
- Saranac Lake, Adirondack Reg Apt
- Sarasota-Bradenton International Airport
- Sault Ste. Marie
- Savannah
- Savannah Hunter
- Savoogna
- Sawyer International Airport
- Schenectady
- Scottsbluff
- Scottsdale
- Seattle/Boeing
- Seattle-Tacoma International Air
- Sedalia
- Selawik
- Selinsgrove
- Sexton Summit
- Seymour-Johnson Air Force Base
- Shaw Air Force Base
- Shawnee, Shawnee Municipal Airport
- Sheboygan
- Shelbyville
- Shelton
- Sheridan
- Shirley
- Shishmaref
- Show Low
- Shreveport
- Sidney
- Sikorsky Memorial Airport
- Siloam Springs
- Sioux City
- Sioux Falls Foss Field
- Sisseton
- Sitka
- Skagway
- Skwentna
- Slana
- Slidell Airport
- Smyrna
- Snowshoe Lake
- Soda Springs
- Soldotna
- Somerset
- Somerville
- South Bend
- Sparrevohn
- Sparta, Sparta Community-Hunter Field Airport
- Spencer
- Spokane/Felts
- Spokane International Airport
- Springdale
- Springfield
- Springfield
- Springfield
- Springfield Comanche
- Stampede Pass
- Stanley
- State College
- Staunton / Shenandoah
- St. Charles County Airport
- St. Clair County International
- St. Cloud
- Sterling Rock Falls
- Stillwater Regional Airport
- St. Joseph
- Stockton
- St Petersburg
- St. Petersburg
- Stuttgart
- Superior
- Sutton
- Syracuse Hancock Intl Apt.
