Hunter x Hunter (2011) is scheduled to end on the final episode of the 13th Hunter Chairman Election arc. The arc begins with episode 137 and will end with episode 148, the final episode of the 2011 TV series.
This has been confirmed by Megumi Han (The voice of Gon Freecss) during her interview with Mantanweb about being a second generation voice actress (She is the daughter of voice actress Keiko Han (Mito Freecss from Hunter x Hunter, Luna from Sailor Moon, Lalah Sune from Mobile Suit Gundam series)). Her first major role was Gon Freecss and it’s sad to admit that the production of the series has concluded with episode 148.
The next episode to run is 143 on August 19th, final episode to broadcast September 24. The previous adaptation of the series ran from October 16, 1999 to March 31, 2001 and ended with a total of 62 episodes on the Yorknew City arc before a series of 30 OVAs picked it up and adapted the Greed Island story.
It’s no surprise the anime will end production so soon, the manga series only recently came back from a 2 year hiatus and the manga is only 20 chapters ahead of the end of the Election arc (Episode 148 in the anime).
Hunter x Hunter (2011) 13th Hunter Chairman Election arc visual:
Hunter x Hunter 2011 synopsis from Haruhichan:
Remake of the 1999 TV series of Hunter x Hunter based on the manga by Togashi Yoshihiro.
A Hunter is one who travels the world doing all sorts of dangerous tasks. From capturing criminals to searching deep within uncharted lands for any lost treasures. Gon is a young boy whose father disappeared long ago, being a Hunter. He believes if he could also follow his father’s path, he could one day reunite with him.
After becoming 12, Gon leaves his home and takes on the task of entering the Hunter exam, notorious for its low success rate and high probability of death to become an official Hunter. He befriends the revenge-driven Kurapica, the doctor-to-be Leorio and the rebellious ex-assassin Killua in the exam, with their friendship prevailing throughout the many trials and threats they come upon taking on the dangerous career of a Hunter.
Source: mantan-web, Crunchyroll