EasyJet will launch 10 new services from its four London bases - Gatwick, Stansted, Luton and Southend - in the summer of 2013.
The carrier will introduce services to Mykonos and Olbia from Luton, while Berlin and Krakow will be added to its Southend operations.
An additional aircraft will be deployed on routes from Southend, says the carrier.
New services to Moscow, Kalamata and Santiago, Spain will be added to EasyJet's Gatwick base next summer, adds the low-cost carrier.
It will also start operating flights to Sharm el Sheikh, Marrakech and Sofia from Stansted.