It’s currently included on Amazon Prime, and for ad-based freebies, it’s on the Pluto streaming channel (ironically).
The book and its sequel were bad, just bad, terribly bad. They were pretty short, so over quickly.
The film itself was either a bit tongue in cheek or just laughably awful. My favorite bit of bozofication was when the pilot discussed and the movie showed the fuel gauge as they prepared to land.
https://www.justwatch.com/us/movie/when-worlds-collide