Flights to both destinations will operate “up to” four times a week with fares from £25.99. The additions bring the number of routes served by the airline from Belfast City to six.
EasyJet has added 140,000 seats on routes from Belfast’s two airports to Gatwick, Luton, Glasgow, Edinburgh and Manchester following Flybe’s demise.
From June the airline will base an aircraft in Belfast City overnight to offer an early morning departure to Gatwick.
