| R03 | Alkali Lake State Airport | Alkali Lake OR |
| R33 | Wakonda Beach State Airport | Waldport OR |
| R47 | Ruhe's Airport | Leipsic OH |
| R49 | Ferry County Airport | Republic WA |
| RAC | John H Batten Airport | Racine WI |
| RAL | Riverside Muni Airport | Riverside CA |
| RAP | Rapid City Rgnl Airport | Rapid City SD |
| RAS | Mustang Beach Airport | Port Aransas TX |
| RAW | Warsaw Muni Airport | Warsaw MO |
| RBD | Dallas Executive Airport | Dallas TX |
| RBE | Rock County Airport | Bassett NE |
| RBG | Roseburg Rgnl Airport | Roseburg OR |
| RBL | Red Bluff Muni Airport | Red Bluff CA |
| RBM | Robinson Aaf/ng Airport | Camp Robinson/little Rock AR |
| RBO | Nueces County Airport | Robstown TX |
| RBW | Lowcountry Rgnl Airport | Walterboro SC |
| RBY | Ruby Airport | Ruby AK |
| RC0 | Rock Creek Airport | Clinton MT |
| RCA | Ellsworth Afb Airport | Rapid City SD |
| RCE | Clarence E Page Muni Airport | Oklahoma City OK |
| RCK | H H Coffield Rgnl Airport | Rockdale TX |
| RCM | Skyhaven Airport | Warrensburg MO |
| RCP | Rooks County Rgnl Airport | Stockton KS |
| RCR | Fulton County Airport | Rochester IN |
| RCT | Nartron Field Airport | Reed City MI |
| RCX | Rusk County Airport | Ladysmith WI |
| RCZ | Richmond County Airport | Rockingham NC |
| RDD | Redding Muni Airport | Redding CA |
| RDG | Reading Rgnl/carl A Spaatz Field Airport | Reading PA |
| RDK | Red Oak Muni Airport | Red Oak IA |
| RDM | Roberts Field Airport | Redmond OR |
| RDR | Grand Forks Afb Airport | Grand Forks ND |
| RDU | Raleigh-durham Intl Airport | Raleigh/durham NC |
| RDV | Red Devil Airport | Red Devil AK |
| RED | Red Lodge Airport | Red Lodge MT |
| REI | Redlands Muni Airport | Redlands CA |
| REO | Rome State Airport | Rome OR |
| RFD | Chicago/rockford Intl Airport | Chicago/rockford IL |
| RFG | Rooke Field Airport | Refugio TX |
| RFI | Rusk County Airport | Henderson TX |
| RGK | Red Wing Rgnl Airport | Red Wing MN |
| RHI | Rhinelander-oneida County Airport | Rhinelander WI |
| RHP | Western Carolina Rgnl Airport | Andrews NC |
| RHV | Reid-hillview Of Santa Clara County Airport | San Jose CA |
| RI01 | Kent County Memorial Hospital Heliport | Warwick RI |
| RI02 | Grayrock Ridge Heliport | Cumberland RI |
| RI05 | Port Edgewood Marine Heliport | Cranston RI |
| RI07 | Wing-over Farm Airport | Tiverton RI |
| RI08 | South County Hospital Heliport | Wakefield RI |
| RI11 | Riconn Airport | Greene RI |
| RI13 | Foxridge Farm Heliport | West Kingston RI |
| RI21 | Goat Island Heliport | Newport RI |
| RI23 | Westerly Hospital Heliport | Westerly RI |
| RI25 | Rhode Island Hospital Heliport | Providence RI |
| RI26 | Landmark Medical Center Heliport | Woonsocket RI |
| RI28 | Plouffe Landing Seaplane Base | Glocester RI |
| RI30 | East Arnolda Farm Heliport | Charlestown RI |
| RI9 | Downtown Providence Helistop Heliport | Providence RI |
| RIC | Richmond Intl Airport | Richmond VA |
| RID | Richmond Muni Airport | Richmond IN |
| RIF | Richfield Muni Airport | Richfield UT |
| RIL | Garfield County Rgnl Airport | Rifle CO |
| RIR | Flabob Airport | Riverside/rubidoux/ CA |
| RIU | Rancho Murieta Airport | Rancho Murieta CA |
| RIV | March Arb Airport | Riverside CA |
| RIW | Riverton Rgnl Airport | Riverton WY |
| RJD | Ridgely Airpark Airport | Ridgely MD |
| RKD | Knox County Rgnl Airport | Rockland ME |
| RKP | Aransas Co Airport | Rockport TX |
| RKR | Robert S Kerr Airport | Poteau OK |
| RKS | Rock Springs-sweetwater County Airport | Rock Springs WY |
| RKW | Rockwood Muni Airport | Rockwood TN |
| RLD | Richland Airport | Richland WA |
| RME | Griffiss Intl Airport | Rome NY |
| RMG | Richard B Russell Airport | Rome GA |
| RMN | Stafford Rgnl Airport | Stafford VA |
| RMP | Rampart Airport | Rampart AK |
| RMY | Brooks Field Airport | Marshall MI |
| RNC | Warren County Memorial Airport | Mc Minnville TN |
| RND | Randolph Afb Airport | Universal City TX |
| RNH | New Richmond Rgnl Airport | New Richmond WI |
| RNM | Ramona Airport | Ramona CA |
| RNO | Reno/tahoe Intl Airport | Reno NV |
| RNP | Owosso Community Airport | Owosso MI |
| RNT | Renton Muni Airport | Renton WA |
| RNV | Cleveland Muni Airport | Cleveland MS |
| ROA | Roanoke Rgnl/woodrum Field Airport | Roanoke VA |
| ROC | Greater Rochester Intl Airport | Rochester NY |
| ROG | Rogers Muni-carter Field Airport | Rogers AR |
| ROS | Rush City Rgnl Airport | Rush City MN |
| ROW | Roswell Intl Air Center Airport | Roswell NM |
| ROX | Roseau Muni/rudy Billberg Field Airport | Roseau MN |
| RPB | Belleville Muni Airport | Belleville KS |
| RPD | Rice Lake Rgnl - Carl's Field Airport | Rice Lake WI |
| RPH | Graham Muni Airport | Graham TX |
| RPJ | Rochelle Muni Airport-koritz Field Airport | Rochelle IL |
| RPX | Roundup Airport | Roundup MT |
| RQB | Roben-hood Airport | Big Rapids MI |
| RQE | Window Rock Airport | Window Rock AZ |
| RQO | El Reno Rgnl Airport | El Reno OK |
| RRL | Merrill Muni Airport | Merrill WI |
| RRQ | Rock Rapids Muni Airport | Rock Rapids IA |
| RRT | Warroad Intl Memorial Airport | Warroad MN |
| RSH | Russian Mission Airport | Russian Mission AK |
| RSL | Russell Muni Airport | Russell KS |
| RSN | Ruston Rgnl Airport | Ruston LA |
| RST | Rochester Intl Airport | Rochester MN |
| RSV | Crawford Co Airport | Robinson IL |
| RSW | Southwest Florida Intl Airport | Fort Myers FL |
| RTN | Raton Muni/crews Field Airport | Raton NM |
| RTS | Reno/stead Airport | Reno NV |
| RUE | Russellville Rgnl Airport | Russellville AR |
| RUG | Rugby Muni Airport | Rugby ND |
| RUQ | Rowan County Airport | Salisbury NC |
| RUT | Rutland - Southern Vermont Rgnl Airport | Rutland VT |
| RVJ | Swinton Smith Fld At Reidsville Muni Airport | Reidsville GA |
| RVL | Mifflin County Airport | Reedsville PA |
| RVN | Hawkins County Airport | Rogersville TN |
| RVR | Jose Aponte De La Torre Airport | Ceiba PR |
| RVS | Richard Lloyd Jones Jr Airport | Tulsa OK |
| RWF | Redwood Falls Muni Airport | Redwood Falls MN |
| RWI | Rocky Mount-wilson Rgnl Airport | Rocky Mount NC |
| RWL | Rawlins Muni/harvey Field Airport | Rawlins WY |
| RWN | Arens Field Airport | Winamac IN |
| RWV | Caldwell Muni Airport | Caldwell TX |
| RXE | Rexburg-madison County Airport | Rexburg ID |
| RYM | Ray S Miller Aaf Airport | Camp Ripley MN |
| RYN | Ryan Field Airport | Tucson AZ |
| RYV | Watertown Muni Airport | Watertown WI |
| RYW | Lago Vista Tx - Rusty Allen Airport | Lago Vista TX |
| RYY | Cobb County-mc Collum Field Airport | Atlanta GA |
| RZL | Jasper County Airport | Rensselaer IN |
| RZN | Burnett County Airport | Siren WI |
| RZR | Cleveland Regional Jetport Airport | Cleveland TN |
| RZT | Ross County Airport | Chillicothe OH |
| RZZ | Halifax County Airport | Roanoke Rapids NC |
