Jet2 and Jet2holidays have added 11,000 extra seats to Majorca and Tenerife for Easter and early summer.
More flights between March and May from across seven departure airports have been added.
The new services from Belfast International, Birmingham, Edinburgh, Glasgow, Leeds Bradford, Manchester and Newcastle come in response to strong demand.
The raised capacity means that the sister companies will offer more flights to Majorca and Tenerife between March and May from across their network of ten UK bases, with a choice of more than 2,000 departures in that time.
Chief executive Steve Heapy said: “We are always quick to react to the demand from customers and independent travel agents.
“The early summer season is proving to be enormously popular in both destinations and we are very pleased to be offering even more choice and flexibility as a result of today’s announcement.
“Our summer ’23 programme is looking extremely popular and today’s expansion shows that this popularity applies right across the summer season, not just during the peak holiday period.”