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Lufthansa
| 53 Compagnies | Compagnie (100) | Nb | Co | Nation | Notes |
| LAB | LAB | 134 | 0 | Bolivie | Faillite |
| LAC | LAC | 10 | 0 | Espagne | Fermé |
| LAC | LAC | 1 | 0 | Equateur | Fermé |
| LAC | LAC (Interdit UE) | 7 | 0 | Congo | Fermé |
| La Compagnie | La Compagnie | 2 | 1 | France | |
| La Costeña | La Costeña | 3 | 0 | Nicaragua | |
| LACSA | LACSA | 39 | 0 | Costa Rica | |
| Ladeco | Ladeco | 57 | 0 | Chili | Fusion |
| Lagun Air | Lagun Air | 3 | 0 | Espagne | Fermé |
| LAI | LAI | 8 | 0 | Venezuela | Fermé |
| Lake Central Airlines | Lake Central Airlines | 50 | 0 | USA | Racheté |
| Laker Airways | Laker Airways | 20 | 0 | UK | Faillite |
| LAM | LAM | 12 | 3 | Mozambique | |
| LaMia (Accident) | LaMia (LicenceX) | 5 | 0 | Venezuela (Bolivie) | Fermé |
| LAN | LAN | 2 | 0 | Espagne | Fermé |
| LANCO | LANCO | 2 | 0 | Colombie | Cargo |
| Lanexang Airways | Lanexang Airways | 2 | 0 | Laos | |
| Lanmei Airlines | Lanmei Airlines | 5 | 0 | Cambodge | Fermé |
| LAP | LAP | 28 | 0 | Paraguay | Fermé |
| LAR | LAR | 1 | 0 | Roumanie | Fermé |
| LAR Transrégional | LAR Transrégional | 2 | 0 | Portugal | Fermé |
| Las Vegas Sands | Las Vegas Sands | 14 | 0 | USA | |
| LATAM | LATAM (Airlines Group) | 344 | 28 | Chili | |
| LATAM_Airlines_Brasil | LATAM_Airlines_Brasil | 167 | 13 | Brésil | |
| LATAM Argentina | LATAM Argentina | 15 | 0 | Argentine | Fermé |
| LATAM Cargo | LATAM Cargo | 7 | 0 | Chili | Fermé |
| LATAM Cargo | LATAM Cargo | 12 | 0 | Colombie | |
| LATAM Cargo Brasil | LATAM Cargo Brasil | 6 | 0 | Brésil (Accident) | Cargo |
| LATAM Colombia | LATAM Colombia | 15 | 0 | Colombie | Fermé |
| LATAM Ecuador | LATAM Ecuador | 4 | 0 | Equateur | |
| LATAM Express | LATAM Express | 13 | 0 | Chili | Fermé |
| LATAM Perú | LATAM Perú | 30 | 0 | Pérou | Fermé |
| Lao Airlines | Lao Airlines | 12 | 1 | Laos | |
| Lao Central Airlines | Lao Central Airlines | 3 | 0 | Laos | Stand By |
| Lao Skyway | Lao Skyway | 11 | 2 | Laos | |
| LAPA | LAPA | 5 | 0 | Argentine | Faillite |
| LAPSA Air Paraguay | LAPSA Air Paraguay | 6 | 0 | Paraguay | Fermé |
| LASA Líneas Aéreas | LASA Líneas Aéreas | 2 | 0 | Argentine | |
| LAS Cargo | LAS Cargo | 2 | 0 | Colombie | Cargo |
| Laser Airlines | Laser Airlines | 13 | 0 | Venezuela | |
| Latin Carga (Accident) | Latin Carga | 13 | 2 | Venezuela (Cargo) | Fermé |
| Latitude Hub | Latitude Hub | 1 | 0 | Espagne | Fermé |
| L'Avion | L'Avion | 2 | 0 | France | Racheté |
| La Tur | La Tur | 8 | 0 | Mexique | Racheté |
| Lauda | Lauda | 26 | 0 | Autriche | |
| Lauda Air Italia | Lauda Air Italia | 5 | 0 | Italie | Fusion |
| Lauda Europe | Lauda Europe | 26 | 0 | Malte | |
| LAW | LAW | 5 | 0 | Chili | Fermé |
| Le Air | Le Air | 3 | 0 | Bahamas | |
| Leaf | Leaf | 1 | 0 | Malte | |
| Leal | Leal | 3 | 0 | Argentine | Fermé |
| Leisure Air | Leisure Air | 15 | 0 | USA | Faillite |
| Leisure Internat. Airways | Leisure Internat. Airways | 8 | 0 | UK | Fermé |
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