| Abbreviation | Definition |
|---|---|
| RDM | Roberts Field, Redmond Municipal Airport, Redmond, Oregon USA |
| RDS | Rincon de Los Sauces, NE, Argentina |
| RDT | Richard- Toll, Senegal |
| RDU | Raleigh- Durham International Airport, Raleigh/ Durham, North Carolina USA |
| RDV | Rodez, France |
| RDZ | Rodez Marcillac, France |
| REC | Guararapes International Airport, Recife, PE, Brazil |
| REG | Reggio Calabria, Italy |
| REH | Rehoboth Beach, Delaware USA |
| REI | Regina, French Guiana |
| REK | Reykjavik, Iceland |
| REL | Trelew, CB, Argentina |
| REN | Orenburg, Russia |
| REO | Rome, Oregon USA |
| REP | Siem Reap, Cambodia |
| RES | Resistencia, CH, Argentina |
| RET | Rost, Norway |
| REU | Reus, Spain |
| REW | Rewa, India |
| REX | Reynosa, Mexico |