In 1967, the governor of the province of Entre Ríos, Brigadier Favre, in view of the isolation of the Mesopotamian provinces, decided to create LAPER (Líneas Aéreas Provinciales de Entre Ríos), predecessor of LAER. Using Cessna 180, 337 and 402 airplanes, air couriers were used to connect Paraná with Villaguay, Concordia, Córdoba, Concepción del Uruguay, La Paz, Rosario and Buenos Aires.
With the arrival of the new government in 1973, LAPER stopped flying. Ten years later, major floods caused the closure of the Zárate-Brazo Largo bridge and the Hernandarias tunnel, which forced the Provincial Aeronautics Directorate (Dirección de Aeronáutica Provincial) to use again its Cessnas 402 together with a helicopter and two IA-50 GII, to establish a kind of air bridge between Gualeguay and the Aeroparque. Once the situation was normalized, flights were suspended.
See also: #TBT: Aerolíneas Argentinas’ transpolar flight (Argentina – New Zealand – Australia) in 1989.
As a result of a strike of Aerolíneas Argentinas pilots in 1986, the brand name LAER was used for the first time, on IA-50 GII, flying the route Paraná – Gualeguaychú – Aeroparque.
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In November 1987 a Saab 340 arrived, and in May 1988 the new LAER logo and colors were defined. A year later, as it was an uneconomical aircraft, it was returned to the lessor after having made few commercial flights.
See also: #TBT: Aerochaco routes and flights in 1962.
In mid 1998, the company incorporates the ATR-42-320 and begins to extend its network of cities to the provinces of Buenos Aires, La Pampa, Chaco and Montevideo, in Uruguay.
LAER acquires from the Argentine Air Force the Fokker F-28 (Tango 04), to settle a debt that the Nation had with Entre Ríos, allowing it to enter the jet era.
DEPARTURES FROM BUENOS AIRES – AEROPARQUE
- Concordia (COC) – ATR 42-320
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 920 | AEP: 08:30 | COC: 09:30 | Daily ex Sat and Sun |
| ER 924 | AEP: 08:55 | COC: 09:55 | Saturday |
| ER 922 | AEP: 17:30 | COC: 18:30 | Daily ex Sat |
- Coronel Suarez (CSZ) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 984 | AEP: 07:40 | CSZ: 08:50 | Tue and Thu |
| ER 986 | AEP: 18:44 | CSZ: 19:54 | Tue and Thu |
| ER 982 | AEP: 20:30 | CSZ: 21:40 | Sunday |
| ER 988 | AEP: 21:40 | CSZ: 22:50 | Friday |
- Goya (OYA) – Reconquista (RCQ) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 956 | AEP: 09:45 | OYA: 11:15 | Mon to Thu |
| ER 956 | OYA: 11:25 | RCQ: 11:35 | Mon to Thu |
| | | |
| ER 958 | AEP: 11:45 | OYA: 13:15 | Friday |
| ER 958 | OYA: 13:25 | RCQ: 13:35 | Friday |
- Necochea (NEC) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 894 (via TDL) | AEP: 07:32 | NEC: 08:57 | Saturday |
| ER 966 | AEP: 08:40 | NEC: 09:50 | Mon, Wed, Fri |
| ER 968 | AEP: 18:44 | NEC: 19:54 | Mon, Wed, Fri |
- Paraná (PRA) – ATR 42-320 and Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 910 | AEP: 07:32 | PRA: 08:32 | Saturday |
| ER 902 | AEP: 08:25 | PRA: 09:25 | Daily ex Sat and Sun |
| ER 912 | AEP: 11:15 | PRA: 12:15 | Saturday |
| ER 908 | AEP: 13:40 | PRA: 14:40 | Saturday |
| ER 918 | AEP: 14:08 | PRA: 15:08 | Thu and Fri |
| ER 906 | AEP: 17:05 | PRA: 18:05 | Daily ex Sat and Sun |
| ER 914 | AEP: 17:45 | PRA: 18:45 | Sunday |
| ER 904 | AEP: 20:16 | PRA: 21:16 | Daily ex Sat and Sun |
| ER 916 | AEP: 20:16 | PRA: 21:16 | Sunday |
- Paso de los Libres (AOL) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 800 | AEP: 05:30 | AOL: 06:55 | Mon, Wed, Fri |
| ER 802 | AEP: 16:10 | AOL: 17:35 | Mon, Wed, Fri |
- Santa Fe (SFN) – ATR 42-320
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 934 | AEP: 11:30 | SFN: 12:30 | Daily ex Sat and Sun |
| ER 938 | AEP: 14:20 | SFN: 15:20 | Daily ex Sat and Sun |
| ER 936 | AEP: 19:56 | SFN: 20:56 | Daily ex Sa |
- Tandil (TDL) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 890 | AEP: 07:32 | TDL: 08:22 | Daily ex Sun |
| ER 892 | AEP: 19:36 | TDL: 20:26 | Daily ex Sat |
- Tres Arroyos (OYO) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 992 | AEP: 22:00 | OYO: 23:10 | Daily ex Sat |
ARRIVALS TO BUENOS AIRES – AEROPARQUE (AEP)
- Concordia (COC) – ATR 42-320
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 921 | COC: 09:50 | AEP: 10:50 | Daily ex Sat and Sun |
| ER 925 | COC: 10:15 | AEP: 11:15 | Saturday |
| ER 923 | COC: 18:50 | AEP: 19:50 | Daily ex Sat |
- Coronel Suarez (CSZ) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 985 | CSZ: 09:00 | AEP: 10:10 | Tue and Thu |
| ER 987 | CSZ: 20:10 | AEP: 21:20 | Tue and Thu |
| ER 983 | CSZ: 21:50 | AEP: 23:00 | Sunday |
| ER 989 | CSZ: 23:00 | AEP: 00:10+1 | Friday |
- Necochea (NEC) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 895 (via TDL) | NEC: 09:10 | AEP: 10:35 | Saturday |
| ER 967 | NEC: 10:00 | AEP: 11:10 | Mon, Wed, Fri |
| ER 969 | NEC: 20:10 | AEP: 21:20 | Mon, Wed, Fri |
- Paraná (PRA) – ATR 42-320 and Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 901 | PRA: 07:00 | AEP: 08:00 | Daily ex Sat and Sun |
| ER 907 | PRA: 09:30 | AEP: 10:30 | Saturday |
| ER 905 | PRA: 10:00 | AEP: 11:00 | Daily ex Sat and Sun |
| ER 933 | PRA: 13:20 | AEP: 14:20 | Daily ex Sa and Sun |
| ER 911 | PRA: 15:00 | AEP: 16:00 | Sunday |
| ER 919 | PRA: 15:40 | AEP: 16:40 | Thu and Fri |
| ER 915 | PRA: 16:00 | AEP: 17:00 | Sunday |
| ER 913 | PRA: 16:30 | AEP: 17:30 | Sunday |
| ER 903 | PRA: 18:30 | AEP: 19:40 | Daily ex Sat and Sun |
| ER 917 | PRA: 19:00 | AEP: 20:00 | Sunday |
- Paso de los Libres (AOL) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 801 | AOL: 07:05 | AEP: 08:30 | Mon, Wed, Fri |
| ER 802 | AOL: 17:45 | AEP: 19:10 | Mon, Wed, Fri |
- Reconquista (RCQ) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 957 | RCQ: 11:45 | AEP: 13:15 | Mon to Thu |
| | | |
| ER 958 | RCQ: 13:45 | AEP: 15:15 | Friday |
- Santa Fe (SFN) – ATR 42-320
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 935 | SFN: 07:00 | AEP: 08:00 | Daily ex Sun |
| ER 933 (via PRA) | SFN: 12:50 | AEP: 14:20 | Daily ex Sat and Sun |
| ER 937 | SFN: 15:40 | AEP: 16:40 | Daily ex Sat and Sun |
- Tandil (TDL) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 891 | TDL: 08:35 | AEP: 09:25 | Daily ex Sun |
| ER 893 | TDL: 20:40 | AEP: 21:50 | Daily ex Sat |
- Tres Arroyos (OYO) – Jetstream 31
To see all tables, place the mobile phone in a horizontal position
| Flight | From | To | Freq. |
| ER 993 | OYO: 05:50 | AEP: 07:00 | Daily ex Sun |
On April 19th, 2002, overwhelmed by the economic crisis, LAER suspended operations.
See also: #TBT: Aerochaco flights in 2009.
 flights in 1999. Operations were carried out on ATR 42-320s and Jetstream 31s.){kind=link}
Y en verano hacían NEC y MJR directos o triangular con el ATR, SST y VLG también varias frecuencias por día con el Jetstream. Cuando no alcanzaban los aviones , hacían con Metros de Baires Fly (creo que Baires). De vez en cuando aparecía alguno reemplazando algún jetstream o agregaban frecuencias. Lastima que no están mas. Falta alguna línea aérea así. También creo que fueron a Saenz Peña, Chacó. Pero no estoy seguro.