WOW Air reduces Tel Aviv from 31OCT from 4x to 3x weekly.
The route has (very) weak pre-booking numbers from start on 12th September ...
Perhaps unsurprising. Israel is a very different market to Western Europe. I'm not sure that the majority of people travelling to and from Israel are the same target demographic as the majority of 'WOW' passengers (i.e. young backpackers, looking for a bargain basement flight with no regard for comfort or on board service). Full service carriers like United and Delta have established themselves well in the Israel-US market, but even with the Icelandic stopover, it is a long way to go without full on board service.
KLDC10, you are absolutely right. However, there is another segment of the market that will eventually fill more seats on WOW's flights to TLV, though it is more likely that this will happen beginning next Spring. The segment of which I write will be made up of tour groups, people who will be very thankful for affordable transportation to & from the Holy Land.