Ryanair will cancel another 18,000 flights between November and March, affecting the travel plans of another 400,000 passengers.
It will fly 25 fewer planes to cut the risk of further flight cancellations.
A total of 34 routes will be suspended this winter, including Stansted to Edinburgh and Glasgow, Gatwick to Belfast and Newcastle to Faro.
Earlier this month, the Irish airline cancelled up to 50 flights a day through to the end of October.