| WBAN | Call Sign | Station Name | State | Location | Primary Site | Site Has Data | See Details |
|---|---|---|---|---|---|---|---|
| 00466 | OPL | OPELOUSAS | LA | ST LANDRY PARISH AIRPORT AHART FIELD | Details | ||
| 03102 | ONT | ONTARIO | CA | ONTARIO INTERNATIONAL ARPT | Y | Y | Details |
| 24162 | ONO | ONTARIO | OR | ONTARIO MUNICIPAL AIRPORT | Y | Y | Details |
| 04957 | ONL | O'NEILL | NE | THE O'NEILL MUNI-JOHN L BAKER FIELD AIRPORT | Y | Details | |
| 94197 | OMK | OMAK | WA | OMAK AIRPORT | Y | Y | Details |
| 94918 | 3NO | OMAHA (NORTH) | NE | NORTH OMAHA AIRPORT | Y | Details | |
| 04992 | MLE | OMAHA | NE | MILLARD AIRPORT | Details | ||
| 14949 | OFF | OMAHA | NE | OFFUTT AFB AIRPORT | Details | ||
| 14942 | OMA | OMAHA | NE | EPPLEY AIRFIELD AIRPORT | Y | Details | |
| 24227 | OLM | OLYMPIA | WA | OLYMPIA AIRPORT | Y | Y | Details |
| 53822 | OLY | OLNEY-NOBLE | IL | OLNEY-NOBLE AIRPORT | Y | Details | |
| 04960 | OVL | OLIVIA | MN | OLIVIA REGIONAL AIRPORT | Y | Details | |
| 63808 | OLV | OLIVE BRANCH | MS | OLIVE BRANCH AIRPORT | Y | Details | |
| 00465 | OLE | OLEAN | NY | CATTARAUGUS COUNTY OLEAN AIRPORT | Details | ||
| 94644 | D3A8 | OLD TOWN | ME | OLD TOWN 2 W | Y | Y | Details |
| 93909 | IXD | OLATHE | KS | NEW CENTURY AIRCENTER ARPT | Y | Y | Details |
| 03967 | OJC | OLATHE | KS | JOHNSON CO EXECUTIVE ARPT | Y | Details | |
| 53949 | OKM | OKMULGEE | OK | OKMULGEE MUNICIPAL AIRPORT | Y | Details | |
| 03954 | PWA | OKLAHOMA CITY | OK | WILEY POST AIRPORT | Y | Details | |
| 13919 | TIK | OKLAHOMA CITY | OK | TINKER AFB AIRPORT | Details |
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