EasyJet are set to "ramp up" flights from late May in time for when international holidays are allowed again.
The airline said it expects to fly at up to 20% of 2019 capacity levels between April and June, with most countries planning to resume flying on a larger scale in May.
Chief Executive Johan Lundgren said the company had decided to increase the amount of flights after the UK government confirmed that international travel was "on track" to resume in May as planned.
easyJet flew just 14% of its 2019 flight programme between October and the end of March.
The group confirmed it will slump to a steep first-half loss of between £690 million and £730 million for the six months to March 31, but said this was slightly better than expected thanks largely to stringent cost cutting.
Johan Lundgren, chief executive of easyJet, said: "We welcome the confirmation by the UK Government that international travel is on track to reopen as planned in mid-May.
"EasyJet was founded to make travel accessible for all and so we continue to engage with Government to ensure that the cost of the required testing is driven down so that it doesn't risk turning back the clock and make travel too costly for some.
"We continue to closely monitor the situation across Europe and with vaccination programmes accelerating, most countries are planning to resume flying at scale in May.
"We have the operational flexibility to rapidly increase flying and add destinations to match demand.
"easyJet is ready to resume flying, prepared for the ramp-up and looking forward to being able to reunite people with their families or take them on leisure and business flights once again."
