EasyJet is to open a new base at Hamburg next year.
The UK low-cost carrier also plans to expand its presence at Berlin.
Three Airbus A319s will be stationed at Hamburg by the carrier, which intends to add 15 new routes to the existing six it operates from the northern German city. In total, EasyJet will operate 170 flights per week from Hamburg during the summer 2014 schedule.
Higher frequencies and early-morning departures will make EasyJet "more attractive to business passengers", says Hamburg airport, which is to become the 23rd base in the carrier's network.
"These expansion plans mean that we expect to carry twice as many passengers in the first year of operations, which will take us to more than a million passengers annually for the first time,” says EasyJet chief executive Carolyn McCall. The airline expects to bring 275,000 additional visitors to Hamburg in the first year.
At Berlin, EasyJet aims to add 130,000 passengers to four million carried over the past year, via boosted frequencies which will bring flights per week to 635. An additional aircraft the airline is basing at the German capital takes the total to eight.
EasyJet expects the expansion in Germany to create 135 direct jobs: 100 in Hamburg and 35 in Berlin.