| 1 | RL | CJSC Royal Flight Airlines | {ICAO: ABG, Callsign: Royal Flight, IATA Designator changed from 4R. Name changed from Joint Stock Company "Abakan-Avia" w.e.f. 11 July 2014.};SRCKEY=AVCODES | RUS | |
| 2 | RL | Royal Phnom Penh Airways | ICAO: PPW, Callsign: Phnom-Penh Air, | K | AVCODES |
| 3 | RL | Air Charter, Inc. | | PRI | AVCODES |
| 4 | RL | Airworld Ltd. | ICAO: AWD, Callsign: Envoy, Merged into Flying Colours MT/FCL | GB | AVCODES |
| 5 | RL | E.S. & A. Robinson (Holdings) Ltd. | | GB | AVCODES |
| 6 | RL | Royal Falcon of Jordan | ICAO: RFJ, IATA Prefix: 372, IATA designator changed from RZ | JOR | AVCODES |
| 7 | RL | Rutland Line, Inc. | 7/2000-7/2005 | | NAKINA |
| 8 | RL | Rutland Line, Inc. | Jul-00 | | NRHS |
| 9 | RL | RUTLAND LINE, INC. | | | PWRC |
| 10 | RL | Rutland Line | | | RSRV |
| 11 | RL | RUTLAND LINE INC | | | SCAC4 |
| 12 | RL | Rutland Line | | USA | TRAFFIC |
| 13 | RLA | Airlinair | IATA: A5, Callsign: Airlinair, Name changed to HOP!-Airlinair w.e.f. 31 March 2013. ICAO designator changed from ARF | F | AVCODES |
| 14 | RLA | Hop!-Airlinair | IATA: A5, Callsign: Airlinair, Name changed from Airlinair w.e.f. 31 March 2013. ICAO designator changed from ARF | F | AVCODES |
| 15 | RLA | LLC Rolema | Callsign: Rolema, Name changed to Tarp Aviation. | RUS | AVCODES |
| 16 | RLA | Tarp Aviation | Callsign: Rolema, Name changed from LLC Rolema. | RUS | AVCODES |
| 17 | RLA | Airlinair | IATA: A5 | | ICAO1 |
| 18 | RLAA | RELATA, INC. | | | SCAC3 |
| 19 | RLAB | RELIABLE TRUCKING | | | SCAC3 |
| 20 | RLAC | RELIABLE CARRIERS INC | | | SCAC3 |
| 21 | RLAC | R & L ACRES LTD | | | SCAC4 |
| 22 | RLAD | RANCHLAND TRANSPORT LIMITED | | | SCAC3 |
| 23 | RLAD | RANCHLAND TRANSPORT LTD | | | SCAC4 |
| 24 | RLAE | R L A FREIGHT SYSTEMS | | | SCAC3 |
| 25 | RLAE | RITE LINE TRANSPORT LTD | | | SCAC4 |
| 26 | RLAF | R & L AGENCY TARIFF | | | SCAC3 |
| 27 | RLAF | RELIANCE FABRICATIONS | | | SCAC4 |
| 28 | RLAG | RaiLogistics AG | | CH | VKM |
| 29 | RLAM | RANCHO LA MISION S A DE C V | | | SCAC4 |
| 30 | RLAN | ROYAL AUTO RESCUE ENTERPRISES INC | | | SCAC3 |
| 31 | RLAN | R G LUMBER CORP | | | SCAC4 |
| 32 | RLAO | ROYAL ARROW COMPANY INC | | | SCAC3 |
| 33 | RLAO | RED BULL TRANSPORT INC | | | SCAC4 |
| 34 | RLAP | ROYAL APPLE SALES INC | | | SCAC3 |
| 35 | RLAQ | ROYAL LINE TRANS INC | | | SCAC4 |
| 36 | RLAR | ROLLA TRANSPORTATION | | | SCAC3 |
| 37 | RLAR | ROBIN LAROCQUE TRANSPORT INC | | | SCAC4 |
| 38 | RLAS | R O L TRANSPORTATION SERVICE | | | SCAC3 |
| 39 | RLAT | RELAY TRANSFER INC | | | SCAC3 |
| 40 | RLAU | AUSTRALIAN REEFER LEASING | | | SCAC3 |
| 41 | RLAW | R & L AUTO MOVERS INC | | | SCAC4 |
| 42 | RLAX | Rail Logix | | | RSRV |
| 43 | RLB | Highland Airways | Callsign: Hiway, Name changed from Air Alba Limited | GB | AVCODES |
| 44 | RLB | Air Alba Limited | IATA: 8R, Name changed to Highland Airways | GB | AVCODES |
| 45 | RLB | Reliable Unique Services Aviation LLC | IATA: R6, Callsign: Reliable, IATA Prefix: 827, IATA designator changed to R4 | AM | AVCODES |
| 46 | RLB | Reliable Unique Services Aviation LLC | IATA: R4, Callsign: Reliable, IATA Prefix: 827, IATA designator changed from R6* | AM | AVCODES |
| 47 | RLB | Sunlight Express Airways t/a Sunlight Air | IATA: 2R, Callsign: Sunlight, | RP | AVCODES |
| 48 | RLBA | RELLER TRANSPORT | | | SCAC4 |
| 49 | RLBB | ROULOTTES LUPIEN TWO ZERO ZERO ZERO | | | SCAC4 |
| 50 | RLBC | RELIABLE CHAUFFEURS | | | SCAC3 |
| 51 | RLBC | ROMANA TRANSPORT LTD | | | SCAC4 |
| 52 | RLBD | RLS TRUCKING INC | | | SCAC4 |
| 53 | RLBE | RELIABLE EXPRESS | | | SCAC3 |
| 54 | RLBG | ROETHLISBERGER, JOHN | | | SCAC3 |
| 55 | RLBG | RELIABLE LOGISTICS INC | | | SCAC4 |
| 56 | RLBK | RLB TRUCKING CORPORATION | | | SCAC3 |
| 57 | RLBL | RELIABLE TRANSFER, INC | | | SCAC3 |
| 58 | RLBM | RELIABLE MOVING INC | | | SCAC3 |
| 59 | RLBM | RELIABLE MOVING & STORAGE | | | SCAC4 |
| 60 | RLBN | R L B LEASING INC | | | SCAC3 |
| 61 | RLBO | RELIABLE OIL CO INC | | | SCAC4 |
| 62 | RLBP | RELIABLE TRANSPORT | | | SCAC4 |
| 63 | RLBR | RELIABLE RESOURCES INC | | | SCAC3 |
| 64 | RLBR | RLB FOOD DISTRIBUTORS | | | SCAC4 |
| 65 | RLBS | RILLS BUS SERVICE | | | SCAC3 |
| 66 | RLBS | RELIABLE TRANSPORTATION SERVICES LL | | | SCAC4 |
| 67 | RLBT | RELIABLE TRANSPORTATION INC | | | SCAC4 |
| 68 | RLBW | ROLANDS BONDED WAREHOUSE | | | SCAC3 |
| 69 | RLC | Avial (Russian Company Limited) | Callsign: Rushair, | RUS | AVCODES |
| 70 | RLC | Real Aeroclub de Lleida | | E | AVCODES |
| 71 | RLC | ROYALTY COACH | | | SCAC4 |
| 72 | RLC | railCare AG | | CH | VKM |
| 73 | RLCC | ROLLINS CUSTOM CARRIERS INC | | | SCAC3 |
| 74 | RLCC | RL TRUCKING ENTERPRISES | | | SCAC4 |
| 75 | RLCD | RITE LINE TRANSPORTATION INC | | | SCAC4 |
| 76 | RLCE | ROL CON EXPRESS | | | SCAC3 |
| 77 | RLCE | RELIABLE CARRIERS INC | | | SCAC4 |
| 78 | RLCF | RUAN LOGISTICS CORPORATION | | | SCAC4 |
| 79 | RLCG | ROYAL CARRIAGE LTD | | | SCAC3 |
| 80 | RLCI | RISEN LIMOUSINE & CITY DELIVERY | | | SCAC3 |
| 81 | RLCI | RELIABLE CARRIER INC | | | SCAC4 |
| 82 | RLCK | R L TRUCKING INC | | | SCAC3 |
| 83 | RLCK | R L TRUCKING | | | SCAC4 |
| 84 | RLCL | RAMSES LOGISTICS CO LTD | | | SCAC4 |
| 85 | RLCM | ROLBAR LOGISTICS COMPANY | | | SCAC4 |
| 86 | RLCN | ROBINCREST LANDSCAPING & CONSTRUCTI | | | SCAC3 |
| 87 | RLCO | RLC TRANSPORTATION CO INC | | | SCAC3 |
| 88 | RLCO | RUSSELL OIL COMPANY OF VIRGINIA INC | | | SCAC4 |
| 89 | RLCP | RELIANCE TRANSPORT INC | | | SCAC4 |
| 90 | RLCQ | R L CARTAGE | | | SCAC3 |
| 91 | RLCQ | REMINGTON LAND & CATTLE | | | SCAC4 |
| 92 | RLCU | DEFENCE CONTAINER MANAGEMENT SERVICE | | GB | BIC |
| 93 | RLCU | ARCATRANS INC., LTD. | | | SCAC3 |
| 94 | RLCU | DEFENCE CONTAINER MANAGEMENT SERVIC | | | SCAC4 |
| 95 | RLCW | RYLAN LOGISTICS CORP | | | SCAC4 |
| 96 | RLCX | ANDY INTERNATIONAL, INC. [ANDY EQUIPMENT, INC.] | | | PWRC |
| 97 | RLCX | RELCO | | | RSRV |
| 98 | RLCX | RELCO LOCOMOTIVES INC | | | SCAC4 |
| 99 | RLCX | Relco Locomotives Inc. | Real: RLEX | USA | TRAFFIC |
| 100 | RLCY | ROE OIL COMPANY INC | | | SCAC4 |
