All three airports will gain an additional Airbus A320 family aircraft, growing easyJet's fleet of based aircraft at Manchester to 24, Liverpool to nine and Glasgow to seven.
EasyJet claims each new aircraft will support around 400 new direct and indirect jobs and contribute a projected £27 million to the economy.
It comes after easyJet revealed 16 additions to its network for summer 2026. Manchester will gain new links to Preveza and Montpellier, while Liverpool will get Lisbon and Paphos routes.