This was a horror/supernatural American movie from the '70, or not later than early '80s, that I saw as a child. Most likely, it was a TV movie.
During a nocturnal commercial flight, strange and scary things happen amongst the passengers. (I do not exactly recall what. Some are killed, for sure. This is why I'd like to find the name of the movie and re-watch it.) Then one of the passengers recalls that it's the "Night of the Witches" (Halloween?), the only night of the year when witches have supernatural powers, or something. Apparently, witches have decided to haunt the flight.
The captain therefore decides to turn the plane to flight toward East, to approach the sunrise and end the night as soon as possible. Meanwhile, the surviving passengers have arranged a small campfire (!) inside the aircraft, to banish the darkness. As the combustible becomes scarce, one of the wealthiest passengers throws a roll of banknotes in the fire.
At the end, the plane reaches the sunrise, and the remaining passengers are saved.