Enter city, state, or port code.
| Name / Location | State   | Airport Code | Port Code | Zip Code |
| Sanford Regional Airport | Florida | SFB | 1882 | |
| Sandusky | Ohio | 4105 | ||
| Sand Point | Alaska | SDP | 3125 | |
| San Ysidro | California | 2504 | ||
| San Pedro | California | 2709 | ||
| San Pablo Bay | California | 2829 | ||
| San Pablo | California | 2829 | ||
| San Luis Obispo | California | SBP | 2707 | |
| San Luis | Arizona | SBP | 2608 | |
| San Juan | PR | SJU | 4913 | |
| San Jose International Airport | California | SJC | 2834 | |
| San Joaquin River | California | 2828 | ||
| San Francisco International Airport | California | SFO | 2801 | |
| San Francisco | California | SFO | 2809 | |
| San Diego | California | SAN | 2501 | |
| San Antonio | Texas | SAT | 5507 | 78246 |
| Salt Lake City Airport | Utah | SLC | 3303 | 84122 |
| Salem | Massachusetts | 0408 | ||
| Saginaw | Michigan | MBS | 3804 | |
| Sacramento | California | SMF | 2816 | |
| Rockland | Maine | RKD | 0121 | |
| Rock Island | Illinois | 3908 | ||
| Rochester | New York | ROC | 0903 | |
| Robbinston | Maine | 0115 | ||
| Rickenbacker Airport | Ohio | CMH | 4182 | |
