Poor planning on the part of the airlines, maybe?
But remember these airlines have hundreds of markets to assess, so they have to depend upon some ‘local’ guidance.
Ryanair we’re convinced for some time they could get Harbour’s runway extended, KLM presumably went there coz they felt the operating hours weren’t an issue, especially early morning, and Icelandair were presumably told they could stick on a prop up the North Atlantic due to tax for North American connections not applying?
Maybe on that basis somebody is saying more than their prayers!