Season 1
1975 · 13 episodes · 6h 30m in all · 5.8/10
Astronaut's from Earth's past deal with an advanced technological Ape society that is debating the destiny of the remnants of the Human race in a not too distant future

Episodes

1. Flames of Doom
6 Sept 1975 · 30 min · 6.0/10
A trio of astronauts are thrust forward in time. They find themselves fugitives after crash-landing on the Planet of the Apes.

2. Escape from Ape City
13 Sept 1975 · 30 min · 6.0/10
After nearly dying in an attack on the humanoids' caves by General Urko's gorilla army, Jeff is able to hide with Nova and avoid being captured.

3. The Unearthly Prophecy
20 Sept 1975 · 30 min · 6.0/10
Urko and his army search the desert for the entrance to the Under-dwellers' caverns.

4. Tunnel of Fear
27 Sept 1975 · 30 min · 6.0/10
Bill and Jeff move the humans from the warpath of General Urko and his army.

5. Lagoon of Peril
4 Oct 1975 · 30 min · 6.0/10
The Simian Senate is holding a top-secret session debating the possibility of intelligent humans after one of Urko's soldiers returns, delirious from the Forbidden Zone.

6. Terror on Ice Mountain
11 Oct 1975 · 30 min · 6.0/10
During an archeological dig, Cornelius uncovers an ancient, human-made book entitled 'A Day at the Zoo'.

7. River of Flames
18 Oct 1975 · 30 min · 6.0/10
Bill and Jeff discuss the best means of eluding Urko's troops when Judy insists that the laser previously rescued from the ship be used as a source of escape.

8. Screaming Wings
25 Oct 1975 · 30 min · 6.0/10
Bill, Jeff and Judy head for the human settlement across the plain between the mountain ranges when they spy human shapes far below. A WWII Curtiss P-40 appears in the sky...

9. Trail to the Unknown
1 Nov 1975 · 30 min · 6.0/10
Bill, Jeff and Judy begin building rafts to help the human tribes reach New Valley. As always, Urko is in pursuit. I wonder if he gets paid overtime...

10. Attack from the Clouds
8 Nov 1975 · 30 min · 5.0/10
During the night, Ape City is awakened by the sounds of huge, flying objects.

11. Mission of Mercy
15 Nov 1975 · 30 min · 6.0/10
As a result of a dog fight with the flying monster, most of the plane's fuel is gone leaving only a two to three-hour supply.

12. Invasion of the Underdwellers
22 Nov 1975 · 30 min · 6.0/10
Reports pour in to the police that burglars are striking all over Ape City.

13. Battle of the Titans
29 Nov 1975 · 30 min · 5.0/10
Urko has been relieved of his duties for three months because of his recent negligence involving his leadership and the failed attempts at capturing Blue Eyes and the rest of the humans.
Return to the Planet of the Apes Season 1: quick answers
How many episodes are in Return to the Planet of the Apes Season 1?
Season 1 of Return to the Planet of the Apes has 13 episodes, about 7 hours in total.
When did Return to the Planet of the Apes Season 1 come out?
Season 1 premiered on 6 Sept 1975.