The new routes include Ibiza, Palma de Mallorca, Menorca (Spain) and Bastia (France).
"Next summer, easyJet will operate fifteen new routes from Lisbon and increase capacity to seven destinations, resulting in an increase of around one million available seats," the airline said in a statement.
Thus, the carrier will now have 34 routes from Lisbon airport, increasing its operation by 54% compared to summer this year.
"The launch of the new routes and the reinforcement of the capacity of several destinations for the next summer is also part of the sequence of the 18 'slots' [time slots for taking off and landing] that the European Commission gave to easyJet at the airport of Lisbon", which TAP was forced to abdicate, explained the company.
Following that decision, the company have started to operate in Terminal 1 of Lisbon airport.
The new routes include Ibiza, Palma de Mallorca, Menorca (Spain) and Bastai (France).
"We are very happy to announce fifteen new routes from our easyJet network at Lisbon airport for next summer, and to become the first airline to offer direct flights between Lisbon-Menorca and Lisbon-Bastia", said the director for Portugal, José Lopes.