In order to unlock ToF, you must be level 60+ and never touched SL beforehand. No quests, no portals, no learning all of the flightpaths from the toy… nothing. Then you must pick up the quest in the city to talk to the DKs, skip the Maw and then you’ll get the choice for ToF— as long as it doesn’t bug out.
For leveling, no. But it is available for 60+ with the above conditions.