| RAA | Rakanda Airport | Rakanda | PG |
| RAB | Tokua Airport | Rabaul | PG |
| RAC | Horlick Airport | Racine | US |
| RAD | Road Town Airport | Tortola | VG |
| RAE | Arar Airport | Arar | SA |
| RAF | Rafaela Airport | Rafaela | AR |
| RAG | Raglan Airport | Raglan | NZ |
| RAH | Rafha Airport | Rafha | SA |
| RAI | Francisco Mendes Int'l Airport | Praia | CV |
| RAJ | Rajkot Airport | Rajkot | IN |
| RAK | Menara Airport | Marrakech | MA |
| RAL | Riverside Municipal Airport | Riverside | US |
| RAM | Ramingining Airport | Ramingining | AU |
| RAN | La Spreta Airport | Ravenna | IT |
| RAO | Leite Lopes Airport | Ribeirao Preto | BR |
| RAP | Rapid City Regional Airport | Rapid City | US |
| RAQ | Sugimanuru Airport | Muna | ID |
| RAR | Rarotonga Island Airport | Rarotonga Island | CK |
| RAS | Sandra-e-Jangal | Rasht | IR |
| RAT | Raduzhny Airport | Raduzhny | RU |
| RAV | Cravo Norte Airport | Cravo Norte | CO |
| RAW | Arawa Airport | Arawa | PG |
| RAX | Oram Airport | Oram | PG |
| RAZ | Rawala Kot Airport | Rawala Kot | PK |
| RBA | Sale Airport | Rabat | MA |
| RBB | Borba Airport | Borba | BR |
| RBC | Robinvale Airport | Robinvale | AU |
| RBD | Redbird Airport | Dallas | US |
| RBE | Ratanakiri Airport | Ratanakiri | KH |
| RBF | Big Bear City Airport | Big Bear | US |
| RBG | Roseburg Municipal Airport | Roseburg | US |
| RBH | Brooks Lodge Airport | Brooks Lodge | US |
| RBI | Rabi Island Airport | Rabi Island | FJ |
| RBJ | Rebun Airport | Rebun | JP |
| RBK | French Valley Airport | Rancho | US |
| RBL | Red Bluff FSS | Red Bluff | US |
| RBM | Wallmuehle Airport | Straubing | DE |
| RBN | Fort Jefferson Airport | Fort Jefferson | US |
| RBO | Robore Airport | Robore | BO |
| RBP | Raba Raba Airport | Raba Raba | PG |
| RBQ | Rurrenabaque Airport | Rurrenabaque | BO |
| RBR | Pres. Medici Airport | Rio Branco | BR |
| RBS | Orbost Airport | Orbost | AU |
| RBT | Marsabit Airport | Marsabit | KE |
| RBU | Roebourne Airport | Roebourne | AU |
| RBV | Ramata Island Airport | Ramata Island | SB |
| RBW | Walterboro Municipal Airport | Walterboro | US |
| RBX | Rumbek Airport | Rumbek | SS |
| RBY | Ruby Airport | Ruby | US |
| RCA | Ellsworth Air Force Base | Rapid City | US |
| RCB | Richards Bay Airport | Richards Bay | ZA |
| RCC | Central Railway Station | Reggio di Calabria | IT |
| RCE | Roche Harbor Airport | Roche Harbor | US |
| RCH | Riohacha Airport | Riohacha | CO |
| RCK | Coffield Airport | Rockdale | US |
| RCL | Redcliffe Airport | Redcliffe | VU |
| RCM | Richmond Airport | Richmond | AU |
| RCN | American River Airport | American River | AU |
| RCO | Rochefort | Rochefort | FR |
| RCP | Cinder Park Airport | Cinder Park | US |
| RCQ | Reconquista Airport | Reconquista | AR |
| RCR | Fulton County Airport | Rochester | US |
| RCS | Rochester Airport | Rochester | GB |
| RCT | Miller Field | Reed City | US |
| RCU | Rio Cuarto Airport | Rio Cuarto | AR |
| RCY | Rum Cay Airport | Rum Cay | BS |
| RDA | Rockhampton Downs Airport | Rockhampton Downs | AU |
| RDB | Red Dog Airport | Red Dog | US |
| RDC | Redencao Airport | Redencao | BR |
| RDD | Redding Airport | Redding | US |
| RDE | Jahabra Airport | Merdey | ID |
| RDG | Reading Municipal Airport/Spaatz Field | Reading | US |
| RDM | Roberts Field | Redmond | US |
| RDN | Redang Island Airport | Redang Island | MY |
| RDO | Radom Airport | Radom | PL |
| RDR | Grand Forks Air Force Base | Red River | US |
| RDS | Rincon de Los Sauces Airport | Rincon de Los Sauces | AR |
| RDT | Richard-Toll Airport | Richard-Toll | SN |
| RDU | Raleigh/Durham Airport | Raleigh/Durham | US |
| RDV | Red Devil Airport | Red Devil | US |
| RDZ | Marcillac Airport | Rodez | FR |
| REA | Reao Airport | Reao, Tuamoto Island | PF |
| REB | Laerz | Rechlin | DE |
| REC | Guararapes International Airport | Recife | BR |
| RED | Mifflin County Airport | Reedsville | US |
| REE | Reese Air Force Base | Lubbock | US |
| REG | Tito Menniti Airport | Reggio di Calabria | IT |
| REH | Rehoboth Beach Airport | Rehoboth Beach | US |
| REI | Regina Airport | Regina | GF |
| REK | Metropolitan Area | Reykjavik | IS |
| REL | Trelew Airport | Trelew | AR |
| REN | Tsentralny Airport | Orenburg | RU |
| REO | State Airport | Rome | US |
| REP | Angkor International Airport | Siem Reap | KH |
| REQ | Reko Diq Airport | Reko Diq | PK |
| RER | Base Aerea Del Sur Airport | Retalhuleu | GT |
| RES | Resistencia Airport | Resistencia | AR |
| RET | Stolport Airport | Rost | NO |
| REU | Reus Airport | Reus | ES |
| REW | Chorhata Airport | Rewa | IN |
| REX | Gen Lucio Blanco Airport | Reynosa | MX |
| REY | Reyes Airport | Reyes | BO |
| REZ | Resende Airport | Resende | BR |
| RFA | Rafai Airport | Rafai | CF |
| RFD | Chicago Rockford Airport | Chicago | US |
| RFG | Rooke Field | Refugio | US |
| RFK | Rollang Field | Anguilla | US |
| RFN | Raufarhofn Airport | Raufarhofn | IS |
| RFP | Uturoa Airport | Raiatea | PF |
| RFR | Rio Frio Airport | Rio Frio | CR |
| RFS | Rosita Airport | Rosita | NI |
| RGA | Rio Grande Airport | Rio Grande | AR |
| RGE | Porgera Airport | Porgera | PG |
| RGH | Balurghat Airport | Balurghat | IN |
| RGI | Rangiroa Airport | Rangiroa | PF |
| RGK | Gorno-Altaysk Airport | Gorno-Altaysk | RU |
| RGL | Rio Gallegos Internacional Airport | Rio Gallegos | AR |
| RGN | Mingaladon Int'l Airport | Yangon | MM |
| RGO | Orang Airport | Chongjin | KP |
| RGR | Ranger Municipal Airport | Ranger | US |
| RGS | Villafria Airport | Burgos | ES |
| RGT | Japura Airport | Rengat | ID |
| RHA | Reykholar Airport | Reykholar | IS |
| RHD | Rio Hondo Airport | Rio Hondo | AR |
| RHE | Reims Airport | Reims | FR |
| RHG | Ruhengeri Airport | Ruhengeri | RW |
| RHI | Oneida County Airport | Rhinelander | US |
| RHL | Roy Hill Airport | Roy Hill | AU |
| RHN | Rosh Pinah Airport | Rosh Pinah | NA |
| RHO | Diagoras Airport | Rhodes | GR |
| RHP | Ramechhap Airport | Ramechhap | NP |
| RHT | Alxa Right Banner Airport | Alxa Right Banner | CN |
| RHV | Reid-Hillview Airport | San Jose | US |
| RIA | Base Aerea Airport | Santa Maria | BR |
| RIB | Gen Buech Airport | Riberalta | BO |
| RIC | Richmond International Airport (Byrd Field) | Richmond | US |
| RID | Richmond Airport | Richmond | US |
| RIE | Rice Lake Airport | Rice Lake | US |
| RIF | Reynolds Airport | Richfield | US |
| RIG | Rio Grande Airport | Rio Grande | BR |
| RII | Railway Station | Soria | ES |
| RIJ | Rioja Airport | Rioja | PE |
| RIK | Carrillo Airport | Carrillo | CR |
| RIL | Garfield County Airport | Rifle | US |
| RIM | Rodriguez De Mendoza Airport | Rodriguez De Mendoza | PE |
| RIN | Ringgi Cove Airport | Ringgi Cove | SB |
| RIO | Metropolitan Area | Rio De Janeiro | BR |
| RIR | Riverside Fla-Bob Airport | Riverside | US |
| RIS | Rishiri Airport | Rishiri | JP |
| RIT | Rio Tigre Airport | Rio Tigre | PA |
| RIV | March Air Force Base | Riverside | US |
| RIW | Riverton Airport | Riverton | US |
| RIX | Riga International Airport | Riga | LV |
| RIY | Riyan Airport | Mukalla | YE |
| RIZ | Rio Alzucar Airport | Rio Alzucar | PA |
| RJA | Rajahmundry Airport | Rajahmundry | IN |
| RJB | Rajbiraj Airport | Rajbiraj | NP |
| RJH | Shah Makhdum Airport | Rajshahi | BD |
| RJI | Rajauri Airport | Rajauri | IN |
| RJK | Rijeka Airport | Rijeka | HR |
| RJL | Agoncillo Airport | Logrono | ES |
| RJN | Rafsanjan Airport | Rafsanjan | IR |
| RKA | Aratika-Nord Airport | Aratika | PF |
| RKC | Yreka Airport | Yreka | US |
| RKD | Knox County Regional Airport | Rockland | US |
| RKE | Roskilde Airport | Copenhagen | DK |
| RKH | Rock Hill Airport | Rock Hill | US |
| RKI | Sipora Airport | Rokot | ID |
| RKP | Aransas County Airport | Rockport | US |
| RKR | Robert S. Kerr Airport | Poteau | US |
| RKS | Sweetwater County Airport | Rock Springs | US |
| RKT | Ras al Khaimah International | Ras al Khaimah | AE |
| RKU | Kairuku Airport | Yule Island | PG |
| RKV | Reykjavik Domestic Airport | Reykjavik | IS |
| RKW | Rockwood Municipal Airport | Rockwood | US |
| RKY | Rokeby Airport | Rokeby | AU |
| RKZ | Peace Airport | Xigaze/Rikaze | CN |
| RLA | National Airport | Rolla | US |
| RLD | Richland Airport | Richland | US |
| RLG | Laage Airport | Rostock | DE |
| RLI | Reilly Army Heliport | Anniston | US |
| RLK | Tianjitai Airport | Bayannur | CN |
| RLO | Valle Del Conlara Airport | Merlo | AR |
| RLP | Rosella Plains Airport | Rosella Plains | AU |
| RLR | Relais de la Reine Airport | Isalo | MG |
| RLT | Arlit Airport | Arlit | NE |
| RLU | Bornite Upper Airport | Bornite | US |
| RMA | Roma Airport | Roma | AU |
| RMB | Buraimi Airport | Buraimi | OM |
| RMC | Off-Line Point | Chicago | US |
| RMD | Basantnagar Airport | Ramagundam | IN |
| RME | Griffiss Air Force Base | Rome | US |
| RMF | Marsa Alam International Airport | Marsa Alam | EG |
| RMG | Richard B Russell Airport | Rome | US |
| RMI | Miramare Airport | Rimini | IT |
| RMK | Renmark Airport | Renmark | AU |
| RML | Ratmalana Airport | Colombo | LK |
| RMN | Rumginae Airport | Rumginae | PG |
| RMP | Rampart Airport | Rampart | US |
| RMQ | Cingcyuangang Airport | Taichung | TW |
| RMS | Ramstein Airport | Ramstein | DE |
| RMT | Rimatara Airport | Rimatara | PF |
| RMU | Corvera International Airport | Corvera | ES |
| RMY | Mariposa-Yosemite | Mariposa | US |
| RNA | Ulawa Airport | Arona | SB |
| RNB | Kallinge Airport | Ronneby | SE |
| RNC | Warren County Airport | McMinnville | US |
| RND | Randolph Air Force Base | San Antonio | US |
| RNE | Renaison Airport | Roanne | FR |
| RNG | Rangely Airport | Rangely | US |
| RNH | New Richmond Municipal Airport | New Richmond | US |
| RNI | Corn Island Airport | Corn Island | NI |
| RNJ | Yoron Airport | Yoron | JP |
| RNL | Tigoa Airport | Rennell Island | SB |
| RNM | Qarn Alam Airport | Qarn Alam | OM |
| RNN | Bornholm Airport | Bornholm | DK |
| RNO | Reno/Tahoe International Airport | Reno | US |
| RNP | Rongelap Airport | Rongelap | MH |
| RNR | Robinson River Airport | Robinson River | PG |
| RNS | St Jacques Airport | Rennes | FR |
| RNT | Renton Airport | Renton | US |
| RNU | Ranau Airport | Ranau | MY |
| RNZ | Rensselaer Airport | Rensselaer | US |
| ROA | Roanoke Municipal Airport | Roanoke | US |
| ROB | Roberts International Airport | Monrovia | LR |
| ROC | Monroe County Airport | Rochester | US |
| ROD | Robertson Airport | Robertson | ZA |
| ROF | Yreka Rohrer Field | Montague | US |
| ROG | Rogers Airport | Rogers | US |
| ROH | Robinhood Airport | Robinhood | AU |
| ROI | Roi Et Airport | Roi Et | TH |
| ROK | Rockhampton Airport | Rockhampton | AU |
| ROL | Roosevelt Airport | Roosevelt | US |
| ROM | Metropolitan Area | Rome | IT |
| RON | Rondon Airport | Rondon | CO |
| ROO | Rondonopolis Airport | Rondonopolis | BR |
| ROP | Rota International Airport | Rota | MP |
| ROR | Roman Tmetuchl Intl Airport | Koror | PW |
| ROS | Fisherton Airport | Rosario | AR |
| ROT | Rotorua International Airport | Rotorua | NZ |
| ROU | Shtruklevo Airport | Ruse | BG |
| ROV | Rostov Airport | Rostov | RU |
| ROW | Industrial Airport | Roswell | US |
| ROX | Roseau Municipal Airport | Roseau | US |
| ROY | Rio Mayo Airport | Rio Mayo | AR |
| ROZ | US Naval Station | Rota | ES |
| RPA | Rolpa Airport | Rolpa | NP |
| RPB | Roper Bar Airport | Roper Bar | AU |
| RPM | Ngukurr Airport | Ngukurr | AU |
| RPN | Ben Ya'akov Airport | Rosh Pina | IL |
| RPR | Swami Vivekananda Airport | Raipur | IN |
| RPV | Roper Valley Airport | Roper Valley | AU |
| RPX | Roundup Airport | Roundup | US |
| RQW | Qayyarah Airport | Qayyarah | IQ |
| RRA | Railway Station | Ronda | ES |
| RRE | Marree Airport | Marree | AU |
| RRG | Sir Gaetan Duval Airport | Rodrigues Island | MU |
| RRI | Barora Airport | Barora | SB |
| RRK | Rourkela Airport | Rourkela | IN |
| RRL | Merrill Municipal Airport | Merrill | US |
| RRM | Marromeu Airport | Marromeu | MZ |
| RRN | Serra Do Norte Airport | Serra Do Norte | BR |
| RRO | Sorrento Harbour | Sorrento | IT |
| RRR | Raroia Airport | Raroia | PF |
| RRS | Roros Airport | Roros | NO |
| RRT | Warroad Airport | Warroad | US |
| RRV | Robinson River Airport | Robinson River | AU |
| RSA | Santa Rosa Airport | Santa Rosa | AR |
| RSB | Roseberth Airport | Roseberth | AU |
| RSD | South Eleuthera Airport | Rock Sound | BS |
| RSE | Rose Bay SPB | Sydney | AU |
| RSG | Serra Pelada Airport | Serra Pelada | BR |
| RSH | Russian Sea Plane Base | Russian Mission | US |
| RSI | Rio Sidra Airport | Rio Sidra | PA |
| RSJ | Rosario Sea Plane Base | Rosario | US |
| RSK | Abresso Airport | Ransiki | ID |
| RSL | Russell Airport | Russell | US |
| RSN | Ruston Airport | Ruston | US |
| RSP | Raspberry Strait Airport | Raspberry Strait | US |
| RSS | Damazin Airport | Damazin | SD |
| RST | Rochester Municipal Airport | Rochester | US |
| RSU | Yeosu/Suncheon Airport | Yeosu/Suncheon | KR |
| RSW | Southwest Florida Regional Airport | Fort Myers | US |
| RSX | Rouses Point Airport | Rouses Point | US |
| RSY | Off-Line Point | Paris | FR |
| RTA | Rotuma Island Airport | Rotuma Island | FJ |
| RTB | Roatan Airport | Roatan | HN |
| RTC | Ratnagiri Airport | Ratnagiri | IN |
| RTD | Rotunda Airport | Rotunda | US |
| RTE | Marguerite Bay Airport | Marguerite Bay | US |
| RTG | Frans Sales Lega Airport | Ruteng | ID |
| RTI | David C. Saudale Airport | Roti | ID |
| RTL | Spirit Lake Airport | Spirit Lake | US |
| RTM | Rotterdam Airport | Rotterdam | NL |
| RTN | Crews Field | Raton | US |
| RTP | Rutland Plains Airport | Rutland Plains | AU |
| RTS | Rottnest Island Airport | Rottnest Island | AU |
| RTW | Tsentralny Airport | Saratov | RU |
| RTY | Merty Merty Airport | Merty Merty | AU |
| RUA | Arua Airport | Arua | UG |
| RUD | Shahrud Airport | Shahrud | IR |
| RUE | Butembo Airport | Butembo | CD |
| RUF | Yuruf, Irian Jaya Airport | Yuruf, Irian Jaya | ID |
| RUG | Rugao Airport | Rugao | CN |
| RUH | King Kalid International Airport | Riyadh | SA |
| RUI | Ruidoso Municipal Airport | Ruidoso | US |
| RUK | Chaurjahari Airport | Rukumkot | NP |
| RUM | Rumjatar Airport | Rumjatar | NP |
| RUN | Roland Garros Airport | Saint Denis de la Reunion | RE |
| RUP | Rupsi Airport | Rupsi | IN |
| RUR | Rurutu Airport | Rurutu | PF |
| RUS | Marau Airport | Marau | SB |
| RUT | Rutland Airport | Rutland | US |
| RUU | Ruti Airport | Kawbenaberi | PG |
| RUV | Rubelsanto Airport | Rubelsanto | GT |
| RUY | Copan Airport | Copan | HN |
| RVA | Farafangana Airport | Farafangana | MG |
| RVC | River Cess Airport | River Cess | LR |
| RVD | Rio Verde Airport | Rio Verde | BR |
| RVE | Saravena Airport | Saravena | CO |
| RVH | Rzhevka Airport | St Petersburg | RU |
| RVK | Ryumsjoen Airport | Roervik | NO |
| RVN | Rovaniemi Airport | Rovaniemi | FI |
| RVO | Reivilo Airport | Reivilo | ZA |
| RVR | Green River Airport | Green River | US |
| RVS | R. Lloyd Jones Airport | Tulsa | US |
| RVT | Ravensthorpe Airport | Ravensthorpe | AU |
| RVV | Raivavae Airport | Raivavae | PF |
| RVY | Rivera Airport | Rivera | UY |
| RWB | Rowan Bay Airport | Rowan Bay | US |
| RWF | Redwood Falls Municipal Airport | Redwood Falls | US |
| RWI | Rocky Mount-Wilson Airport | Rocky Mount/Wilson | US |
| RWL | Rawlins Airport | Rawlins | US |
| RWN | Rivne International Airport | Rivne | UA |
| RWP | Off-Line Point | Rawalpindi | PK |
| RWS | Sumare Airport | Sumare | BR |
| RXA | Rawdah Airport | Rawdah | YE |
| RXE | Madison County Airport | Rexburg | US |
| RXS | Roxas Airport | Roxas | PH |
| RYB | Staroselye Airport | Rybinsk | RU |
| RYG | Moss Rygge Airport | Oslo | NO |
| RYK | Shaikh Zayed International Airport | Rahim Yar Khan | PK |
| RYN | Medis Airport | Royan | FR |
| RYO | Rio Turbio Airport | Rio Turbio | AR |
| RZA | Santa Cruz Airport | Santa Cruz | AR |
| RZE | Jasionka Airport | Rzeszow | PL |
| RZG | Bus Station | Zaragoza | ES |
| RZH | Quartz Hill Airport | Lancaster | US |
| RZN | Turlatovo Airport | Ryazan | RU |
| RZP | Cesar Lim Rodriguez Airport | Taytay | PH |
| RZR | Ramsar Airport | Ramsar | IR |
| RZS | Sawan Airport | Sawan | PK |
| RZY | Rezayieh Airport | Rezayieh | IR |
| RZZ | Halifax County Airport | Roanoke Rapids | US |