| 2801 | HLDC | HOLLAND COMPANY INC | | | SCAC4 |
| 2802 | HLDD | HOLIDAY TOURS INC | | | SCAC4 |
| 2803 | HLDG | HEARTLAND TRUCKING | | | SCAC4 |
| 2804 | HLDI | HOLLAND, DONALD TRUCKING INC | | | SCAC4 |
| 2805 | HLDL | HEARTLAND TRANSPORT LLC | | | SCAC4 |
| 2806 | HLDN | HILDEBRAND, AL TRUCKING LTD | | | SCAC4 |
| 2807 | HLDS | HOTLINE DELIVERY SYSTEMS | | | SCAC4 |
| 2808 | HLDT | HIGHLAND TRANSPORT INC | | | SCAC4 |
| 2809 | HLDV | HALL, DAVID | | | SCAC4 |
| 2810 | HLDW | HAKAI LODGE INC | | | SCAC4 |
| 2811 | HLDY | HOLIDAY TRUCKING | | | SCAC4 |
| 2812 | HLE | First Air | Callsign: Helimed, Name changed to UK HEMS | GB | AVCODES |
| 2813 | HLE | UK HEMS | Callsign: Helimed, Name changed from First Air | GB | AVCODES |
| 2814 | HLE | UK HEMS | | | ICAO1 |
| 2815 | HLEB | HOEGH LNG AS | | | SCAC4 |
| 2816 | HLEC | HEAVY LOADS EXPRESS LLC | | | SCAC4 |
| 2817 | HLEF | LEIF HOEGH & CO A/S | | | SCAC3 |
| 2818 | HLEF | LEIF HOEGH & CO A/S | | | SCAC4 |
| 2819 | HLEL | HOLLAND EQUIPMENT LIMITED | | | SCAC4 |
| 2820 | HLEN | HILLS ENTERPRISES INC OF SOUTHWESTE | | | SCAC4 |
| 2821 | HLEP | HAMMER LANE EXPRESS | | | SCAC4 |
| 2822 | HLEQ | HOOD LOGGING EQUIPMENT | | | SCAC4 |
| 2823 | HLEU | SHIHLIEN FINE CHEMICALS CO. LTD. | | RC | BIC |
| 2824 | HLEX | Flint Hills Resources LP | added 1/2009 | | NAKINA |
| 2825 | HLEX | Huntsman Polymers Corp. | added 7/2002; 7/2005; eliminated 1/2009 | | NAKINA |
| 2826 | HLEX | Huntsman Corp. | added 4/2002; eliminated 7/2002 | | NAKINA |
| 2827 | HLEX | Huntsman Polymers Corp. | 7/2000 (not listed); added 1/2001; eliminated 4/2002 | | NAKINA |
| 2828 | HLEX | Huntsman Polymers Corp. | 7/2000; added 1/2001 | | NRHS |
| 2829 | HLEX | HUNTSMAN POLYMERS CORP. | | | PWRC |
| 2830 | HLEX | Hunstman Polymers Corporation | | | RSRV |
| 2831 | HLEX | BRASKEM AMERICA INC | | | SCAC4 |
| 2832 | HLEY | HALEY INDUSTRIES LTD | | | SCAC4 |
| 2833 | HLF | Hapag Lloyd Fluggessellschaft mbH | IATA: HF, Callsign: Hapag Lloyd, IATA Prefix: 617, Name changed to TUIfly GmbH. ICAO callsign changed to Tuifly. | D | AVCODES |
| 2834 | HLF | TUIfly GmbH | IATA: HF, Callsign: Hapag Lloyd, IATA Prefix: 617, Name changed from Hapag Lloyd Fluggessellschaft mbH. IATA designator changed to X3* w.e.f. 01 October 2010. ICAO designator changed to TUI w.e.f. 01 October 2010. | D | AVCODES |
| 2835 | HLF | Homeland Airlines Co., Ltd. | Callsign: Homeland, Name changed to Central Airlines Co., Ltd. | PRC | AVCODES |
| 2836 | HLF | Central Airlines Co., Ltd. | IATA: I9, Callsign: Homeland, IATA Prefix: 959, Name changed from Homeland Airlines Co., Ltd. Also known as Zhongzhou Airlines. | PRC | AVCODES |
| 2837 | HLF | Hapagfly | IATA: HF | | ICAO1 |
| 2838 | HLFC | HILLTOP FUEL CO INC | | | SCAC4 |
| 2839 | HLFL | HARBOUR LIGHT FISHERIES (1993) LIMI | | | SCAC4 |
| 2840 | HLFN | H L FUEL CO INC | | | SCAC4 |
| 2841 | HLG | Helog AG, Helikoptertransporte | Callsign: Helog, | CH | AVCODES |
| 2842 | HLG | Helog | | | ICAO1 |
| 2843 | HLG | Holzlogistik und Güterbahn GmbH | Bebra | D | privat-bahn.de |
| 2844 | HLGC | HAYNES LOGISTICS | | | SCAC4 |
| 2845 | HLGF | HOLLISTON LOGISTICS LLC | | | SCAC4 |
| 2846 | HLGI | HUNTER EXPRESS LTD | | | SCAC4 |
| 2847 | HLGK | HEDRICK LOGISTICS SPECIALISTS INC | | | SCAC4 |
| 2848 | HLGN | HILL GRAIN INC | | | SCAC4 |
| 2849 | HLGR | HARRAH LOGISTICS GROUP INC | | | SCAC4 |
| 2850 | HLGS | HART LOGISTICS | | | SCAC4 |
| 2851 | HLGU | HAEFELI AG | | CH | BIC |
| 2852 | HLGX | HELM Financial Corp. | added 7/1998; 7/2000-7/2005 | | NAKINA |
| 2853 | HLGX | HELM Financial Corp. | added 7/98; 7/2000 | | NRHS |
| 2854 | HLGX | HELM FINANCIAL CORPORATION | | | PWRC |
| 2855 | HLGX | Helm Financial Corporation | | | RSRV |
| 2856 | HLH | Hala Air Co. | Callsign: Hala Air, | SUD | AVCODES |
| 2857 | HLH | Hala Air | | | ICAO1 |
| 2858 | HLHC | HILLSIDE HAULING INC | | | SCAC4 |
| 2859 | HLHE | HLH EXPRESS INC | | | SCAC4 |
| 2860 | HLHG | HOLTZ, HUGH | | | SCAC4 |
| 2861 | HLHL | HILL AND HILL TRANSPORT | | | SCAC4 |
| 2862 | HLHU | HEUNG-A LINE CO LTD | | ROK | BIC |
| 2863 | HLHU | HORN LINIE | | | SCAC4 |
| 2864 | HLI | Heli Securite Helicopter Airline | IATA: H4, Callsign: Heli Saint-Tropez, Designator H4 recalled by IATA. | F | AVCODES |
| 2865 | HLI | Heli Securite Helicopter Airline | IATA: HS, Callsign: Heli Saint-Tropez, Designator H4 recalled by IATA. | F | AVCODES |
| 2866 | HLI | Heli Securite | | | ICAO1 |
| 2867 | HLIA | HOLLIS TRANSPORT AGENCY INC | | | SCAC4 |
| 2868 | HLIB | HTL LOGISTICS INC | | | SCAC4 |
| 2869 | HLIC | HURST LOGISTICS INC | | | SCAC4 |
| 2870 | HLID | HURST LOGISTICS INC (WAREHOUSE) | | | SCAC4 |
| 2871 | HLIG | HALL, ROBERT ORIGINALS | | | SCAC4 |
| 2872 | HLIH | HOLT LOGISTICS INC | | | SCAC4 |
| 2873 | HLII | HARMEL IMPLEMENT INC | | | SCAC4 |
| 2874 | HLIQ | HULLISON & SON CARTAGE, INC | | | SCAC1 |
| 2875 | HLIV | HEINS LOGISTICS INC | | | SCAC4 |
| 2876 | HLIX | Hudson Logistics, Inc. | added 4/2007; eliminated 10/2009 | | NAKINA |
| 2877 | HLIX | HUDSON LOGISTICS, INC. | | | PWRC |
| 2878 | HLIX | HUDSON LOGISTICS INC | | | SCAC4 |
| 2879 | HLJ | All Seasons Air Pacific, Inc. | Callsign: All West, | USA | AVCODES |
| 2880 | HLJ | Hello Jets S.r.l. | IATA: H3, Callsign: Hellojets, Subsidiary of Blue Air's owner Teodor Rada. | RO | AVCODES |
| 2881 | HLJB | HULL, JOHN B INC | | | SCAC4 |
| 2882 | HLJN | HOLLINGER, J L & SONS INC | | | SCAC4 |
| 2883 | HLJU | HONDURAS LOGISTICS AND SHIPPING COMPANY | | HN | BIC |
| 2884 | HLJY | HARLEY, PHILIP J | | | SCAC4 |
| 2885 | HLK | Heli-link Helikopter AG | Callsign: Heli-Link, Name changed to DC Aviation Switzerland AG. | CH | AVCODES |
| 2886 | HLK | DC Aviation Switzerland AG | Callsign: Heli-Link, ICAO designator changed to DCH. Name changed from Heli-link Helikopter AG. | CH | AVCODES |
| 2887 | HLK | Heli-Link | | | ICAO1 |
| 2888 | HLKA | HELKA EXPRESS INTERNATIONAL LTD | | | SCAC4 |
| 2889 | HLKC | H & L TRUCKING LLC | | | SCAC4 |
| 2890 | HLKD | HILKER, DENNIS R TRUCKING INC | | | SCAC4 |
| 2891 | HLKE | HLINKA ENTERPRISE INC | | | SCAC4 |
| 2892 | HLKG | HEATLINK GROUP INC | | | SCAC4 |
| 2893 | HLKJ | HILL TRUCKING INC | | | SCAC4 |
| 2894 | HLKN | HALLS TRUCKING | | | SCAC4 |
| 2895 | HLKQ | HALEAKALA TRANSPORTATION & WAREHOUS | | | SCAC4 |
| 2896 | HLKS | HALL, KEITH & SONS TRANSPORT LTD | | | SCAC4 |
| 2897 | HLL | Eliliguria International S.p.A. | Callsign: Eliliguria, Name changed from Eliliguria | I | AVCODES |
| 2898 | HLL | Havelet Leasing Ltd. | Callsign: Havelet, | GB | AVCODES |
| 2899 | HLL | Eliliguria | Callsign: Eliliguria, Name changed to Eliliguria International S.p.A. | I | AVCODES |
| 2900 | HLL | Holiday Airlines Company | | T | AVCODES |
