FairdealFrank not always
Norwegian are by any measure a low cost airline and they through ticket on many routes,even with hold luggage, in fact if you check out their website you will see that you can select either direct or connecting routes.
You of course pay for food and drink and they make big play that they don't need to give you a free newspaper because they provide free WiFi on board so you can surf/read what you want
They also shortly to start long haul flights, so the gap gets ever closer