RE:RE:RE:Jetline website falsely claiming JET is first ULCC not gonna waste anymore of my valuable time, but love that you rely on Wikipedia - SWOOP in an LCC not a ULCC - they can't sustain a ULCC model
from the same page on your wiki -
Ultra low-cost carrier[edit]
A secondary term "ultra low-cost carrier" (ULCC) has been used to differentiate some low-cost airlines whose model deviates further from that of a standard low-cost carrier, with ultra low-cost carriers having minimal inclusions in the fare and a greater number of add-on fees.[17] Spirit Airlines and Allegiant Air have been most commonly referred to as Ultra Low-Cost,[18] with Frontier Airlines in 2015 announcing a new strategy to reposition themselves as ultra low-cost.[19] Following the appointment of former Allegiant Air COO Jude Bricker as their new CEO, Sun Country Airlines began transitioning to an ultra low-cost carrier model in 2017.[20][21]
Canada Jetlines specifically refers to itself as seeking to apply "Ultra-Low Cost Carrier operating principles".[22]