| 1 | LY | EL AL Israel Airlines Ltd. | ICAO: ELY, Callsign: El Al, IATA Prefix: 114, Name changed to EL AL Israel Airlines Ltd. d/b/a El Al. | IL | AVCODES |
| 2 | LY | EL AL Israel Airlines Ltd. d/b/a El Al | ICAO: ELY, Callsign: El Al, IATA Prefix: 114, Name changed from EL AL Israel Airlines Ltd. | IL | AVCODES |
| 3 | LY | Austria - unknown | | A | TRAFFIC |
| 4 | LYA | Lyon Air | Callsign: Lyonair, | F | AVCODES |
| 5 | LYA | Libyan Air Ambulance | Callsign: Libyan Air Ambulance, | LAR | AVCODES |
| 6 | LYAF | LYNDEN AIR FREIGHT INC | | | SCAC3 |
| 7 | LYAF | LYNDEN AIR FREIGHT INC | | | SCAC4 |
| 8 | LYAG | LLANTAS Y ACCESORIOS GUADALAJARA SA | | | SCAC4 |
| 9 | LYAI | LYNN, AMIEE INC | | | SCAC4 |
| 10 | LYAL | LOYAL LOGISTICS LTD | | | SCAC4 |
| 11 | LYAN | LYLY & SONS INC | | | SCAC3 |
| 12 | LYAT | LYONS AUTO TRANSPORT SERVICE | | | SCAC3 |
| 13 | LYB | Lynden Air Cargo PNG Ltd. | IATA: L8, Callsign: Highlands, Designator L8* recalled by IATA. | PNG | AVCODES |
| 14 | LYB | Lynden Air Cargo PNG Ltd. | Callsign: Highlands, Designator L8* recalled by IATA. | PNG | AVCODES |
| 15 | LYBC | LAYDEN BUS COMPANY INC | | | SCAC3 |
| 16 | LYBI | LYBERTON IONTERNATIONAL LTD | | | SCAC3 |
| 17 | LYBI | LIONIZE DELIVERY SOLUTIONS INC | | | SCAC4 |
| 18 | LYBJ | LYCAL BUS CO | | | SCAC3 |
| 19 | LYBK | LADYBUG TRUCKING LLC | | | SCAC4 |
| 20 | LYBL | LYNCH, BILL TRUCKING | | | SCAC3 |
| 21 | LYBM | LYNN, B | | | SCAC4 |
| 22 | LYBO | LYBARGER OIL INC | | | SCAC4 |
| 23 | LYBR | LAYNE BROS INC | | | SCAC3 |
| 24 | LYBS | LYNCHBURG BUS SERVICE INC | | | SCAC3 |
| 25 | LYBS | LYBRA SHIPPING LINE | | | SCAC4 |
| 26 | LYBT | LYMAN BULK TRANSPORT | | | SCAC3 |
| 27 | LYC | Lynden Air Cargo, LLC | IATA: L2, Callsign: Lynden, IATA Prefix: 344, | USA | AVCODES |
| 28 | LYC | Lynden Air Cargo | IATA: L2 | | ICAO1 |
| 29 | LYCA | LUTZ HAY | | | SCAC4 |
| 30 | LYCB | LYNCHBURG TRUCK LINES | | | SCAC3 |
| 31 | LYCB | LUCKEY TRANSFER LLC | | | SCAC4 |
| 32 | LYCF | LINCOLN YELLOW CAB AND AIR FREIGHT | | | SCAC3 |
| 33 | LYCG | LAYMAN LOGGING | | | SCAC3 |
| 34 | LYCG | LLOYDS TRUCKING & MOBILE REPAIR SER | | | SCAC4 |
| 35 | LYCI | LYNNS CARTAGE INC | | | SCAC3 |
| 36 | LYCI | LEGACY FARMS TRANSPORTATION | | | SCAC4 |
| 37 | LYCL | LAYDON COMPOSITES LTD | | | SCAC4 |
| 38 | LYCM | LOYALIST COVE MARINA | | | SCAC4 |
| 39 | LYCO | LYNCO MOVERS INC | | | SCAC3 |
| 40 | LYCO | LYNCO MOVERS INC | | | SCAC4 |
| 41 | LYCP | LYCIPPUS TRUCKING INC | | | SCAC3 |
| 42 | LYCP | LEYWAY LLC | | | SCAC4 |
| 43 | LYCS | LOGISTICA Y CRUCES INTERNACIONALES | | | SCAC4 |
| 44 | LYCT | LYNCH TRUCK SERVICE INC | | | SCAC3 |
| 45 | LYCX | Liberty Yeast Corp. | 8/1920-7/1923 | | NAKINA |
| 46 | LYCX | LIBERTY YEAST CORP. | | | PWRC |
| 47 | LYD | Lydd Air Ltd. | Callsign: Lyddair, | GB | AVCODES |
| 48 | LYD | Lydd Air | | | ICAO1 |
| 49 | LYDA | LYDA, LAWRENCE | | | SCAC3 |
| 50 | LYDB | LEVESQUE, YVES TRANSPORT DE BOIS | | | SCAC4 |
| 51 | LYDC | LYNDAL DIVISION COLLOIDS INC | | | SCAC3 |
| 52 | LYDD | LLOYD, DEAN | | | SCAC3 |
| 53 | LYDD | LYNDEN DOOR TRUCKING LLC | | | SCAC4 |
| 54 | LYDE | LYDEN OIL COMPANY | | | SCAC4 |
| 55 | LYDH | LYDEN HAULING COMPANY | | | SCAC4 |
| 56 | LYDI | LYDIA INVESTMENTS CO | | | SCAC4 |
| 57 | LYDK | LOYD TRUCKING | | | SCAC3 |
| 58 | LYDL | LYDALL EXPRESS INC | | | SCAC3 |
| 59 | LYDM | LYDIA MAR SHIPPING CO S A GREECE | | | SCAC3 |
| 60 | LYDM | LYDIA MAR SHIPPING CO S A | | | SCAC4 |
| 61 | LYDN | LYNDON LINES LTD | | | SCAC3 |
| 62 | LYDO | LYON CHEMICALS INC | | | SCAC3 |
| 63 | LYDP | LYNWOOD PANAMA S.A | | | SCAC3 |
| 64 | LYDP | LYDA ENTERPRISES INC | | | SCAC4 |
| 65 | LYDR | LYN DAR INC | | | SCAC4 |
| 66 | LYDV | LYNDONVILLE VINEGAR INC | | | SCAC3 |
| 67 | LYEC | LYNCHBURG EXPRESS COMPANY | | | SCAC3 |
| 68 | LYEI | LYON EXPRESS INC | | | SCAC3 |
| 69 | LYEP | LYNCO EXPRESS | | | SCAC3 |
| 70 | LYEP | LYNCO EXPRESS | | | SCAC4 |
| 71 | LYET | LYNN ETTE TRUCKING LL | | | SCAC4 |
| 72 | LYEU | HUBEI LINGYONG ELECTRONIC MATERIALS CO., LTD. | | PRC | BIC |
| 73 | LYEV | LYNN ELEVATOR INC | | | SCAC3 |
| 74 | LYF | Lithuanian Air Force Safety Department | Callsign: Lithuanian Airforce, | LT | AVCODES |
| 75 | LYF | Lithuanian Air Force | | | ICAO1 |
| 76 | LYFD | LUZ Y FUERZA DE BAJA CALIFORNIA SA | | | SCAC4 |
| 77 | LYFF | LYONS SHIPPING AGENCY INC | | | SCAC3 |
| 78 | LYFI | LYONS FUEL INC | | | SCAC4 |
| 79 | LYFL | LYLE FARMS LLC | | | SCAC4 |
| 80 | LYFQ | LYONS FREIGHT LINES | | | SCAC3 |
| 81 | LYGU | DONG FANG INTERNATIONAL CONTAINER (LIANYUNGANG) CO., LTD | | PRC | BIC |
| 82 | LYGU | LIANYUNGANG UNIVERSAL SPECIAL PURPO | | | SCAC4 |
| 83 | LYH | Yankee Lima Helicopteres | Callsign: Heliguyane, | GUY | AVCODES |
| 84 | LYHA | LYNCH, ALTA | | | SCAC3 |
| 85 | LYIM | LYNCH IMPORTS LLC | | | SCAC4 |
| 86 | LyJ | Lysekils Järnväg (Lysekilsbanan) | 1913 - 1939 | S | svenska-lok.se |
| 87 | LYJS | LYNCH, J H & SONS INC | | | SCAC3 |
| 88 | LYJT | LYNN, J P TRANSPORTATION INC | | | SCAC3 |
| 89 | LYKC | LYKES CARTAGE COMPANY INC | | | SCAC4 |
| 90 | LYKI | LIBERTY TRUCKING LLC | | | SCAC4 |
| 91 | LYKL | LYKES LINES LIMITED | | | SCAC3 |
| 92 | LYKL | LYKES LINES LIMITED_HAMILTON BERMUD | | | SCAC4 |
| 93 | LYKN | LYKINS TRANSPORTATION INC | | | SCAC4 |
| 94 | LYKP | LYKES PASCO PACKING CO | | | SCAC3 |
| 95 | LYKQ | LYLAND TRUCKING INC | | | SCAC4 |
| 96 | LYKT | LYKES TRANSPORT, INC. | | | SCAC3 |
| 97 | LYKU | LYKES BROS. STEAMSHIP CO., INC. | | | PWRC |
| 98 | LYKU | Lykes Brothers Steamship | | | RSRV |
| 99 | LYKU | LYKES BROS STEAMSHIP CO INC | | | SCAC3 |
| 100 | LYKU | CP SHIPS | | | SCAC4 |
