LAN Peru has boosted the frequency of flights from Lima to the Brazilian city of Foz do Iguacu to daily service.
The Peruvian subsidiary of LATAM Airlines Group was operating on the route four times weekly previously.
LAN Peru says the new flights will increase the number of seats on the route to 52,900 annually from 27,800.
The airline operates Airbus A319 aircraft on the flights, schedules in Innovata show. It is the only airline offering service on the route.