Jet2.com and Jet2holidays have brought forward their 2023 programmes to Rhodes and Halkidiki from selected UK airports, with services now starting in early April.
The operator said the move means summer services to the destinations will start earlier than ever before.
The extended summer season to Rhodes will operate from Birmingham and Manchester, with both airports operating two services a week from 2 April.
Extended Halkidiki services have been added from three airports: Manchester and Stanstead operating two flights a week from 1 April, then a weekly service from Birmingham starting on 7 April.