The carrier, which is based in Luton north of London, follows Irish no-frills rival Ryanair in cutting losses as the aviation sector recovers from pandemic lockdowns.
Losses after taxation narrowed to £431 million (509 million euros, $535 million) in the six months to the end of March compared with a loss of £549 million a year earlier, EasyJet said in a statement.
Revenues soared more than six-fold to hit £1.5 billion, aided by increasing capacity.
The performance "was mainly driven by the reduction in Covid-19 related travel restrictions across Europe which has increased customer confidence to travel again", EasyJet said.
The company added that it hopes to carry almost as many passengers in the final quarter than it did in 2019 prior to the coronavirus outbreak.
Pre-tax losses contracted to £545 million in the reporting period from £701 million last time around, towards the better end of company guidance.
"EasyJet has reduced its losses year on year," said chief executive Johan Lundgren.
"The pent-up demand and removal of travel restrictions provided for a strong and sustained recovery in trading."
The news comes days after rival Ryanair announced a large reduction in annual net losses.
Ryanair logged a loss of 355 million euros ($369 million) for its financial year to March, improving sharply from 1.0 billion euros last time around.
The global aviation industry was ravaged by the coronavirus crisis as authorities rushed to contain the outbreak, but demand is now recovering.
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